CA2524022A1 - Prostheses and tools for replacement of natural facet joints with artificial facet joint surfaces - Google Patents
Prostheses and tools for replacement of natural facet joints with artificial facet joint surfaces Download PDFInfo
- Publication number
- CA2524022A1 CA2524022A1 CA002524022A CA2524022A CA2524022A1 CA 2524022 A1 CA2524022 A1 CA 2524022A1 CA 002524022 A CA002524022 A CA 002524022A CA 2524022 A CA2524022 A CA 2524022A CA 2524022 A1 CA2524022 A1 CA 2524022A1
- Authority
- CA
- Canada
- Prior art keywords
- facet joint
- cephalad
- caudal
- vertebra
- prosthesis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1757—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the spine
-
- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4405—Joints for the spine, e.g. vertebrae, spinal discs for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes
-
- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
-
- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
-
- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4625—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use
- A61F2002/4628—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use with linear motion along or rotating motion about an axis transverse to the instrument axis or to the implantation direction, e.g. clamping
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4629—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof connected to the endoprosthesis or implant via a threaded connection
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- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/0097—Coating or prosthesis-covering structure made of pharmaceutical products, e.g. antibiotics
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Vascular Medicine (AREA)
- Cardiology (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Dentistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
Cephalad and caudal vertebral facet joint prostheses and methods of use are provided. The cephalad prostheses are adapted and configured to be attached to a lamina portion of a vertebra without blocking a pedicle portion of the cephalad vertebra.
Description
PROSTHESES AND TOOLS FOR
REPLACEMENT OF NATURAL FACET JOINTS WITH
ARTIFICIAL FACET JOINT SURFACES
FIELD OF THE INVENTION
This invention relates to prostheses for treating various types of spinal pathologies, as well as to methods of treating spinal pathologies.
BACKGROUND OF THE INVENTION
I. VERTEBRAL ANATOMY
As Fig. 1 shows, the human spinal column 10 is comprised of a series of thirty-three stacked vertebrae 12 divided into five regions. The cervical region includes seven vertebrae 12, known as C1-C7. The thoracic region includes twelve vertebrae 12, known as T1-T12. The lumbar region contains five vertebrae 12, known as L1-L5. The sacral region is comprised of five vertebrae 12, known as 51-S5. The coccygeal region contains four vertebrae 12, known as Col-Co4.
Fig. 2 shows a normal human lumbar vertebra 12. Although the lumbar vertebrae 12 vary somewhat according to location, they share many features common to most vertebrae 12. Each vertebra 12 includes a vertebral body 14 and posterior elements as follows:
Two short bones, the pedicles 16, extend backward from each side of the vertebral body 14 to form a vertebral arch 18. At the posterior end of each pedicle 16 the vertebral arch 18 flares out into broad plates of bone known as the laminae 20. The laminae 20 fuse with each other to form a spinous process 22. The spinous process 22 serves for muscle and ligamentous attachment. A smooth transition from the pedicles 16 into the laminae 20 is interrupted by the formation of a series of processes.
Two transverse processes 24 thrust out laterally on each side from the junction of the pedicle 16 with the lamina 20. The transverse processes 24 serve as levers for the attachment of muscles to the vertebrae 12. Four articular processes, two superior 26 and two inferior 28, also rise from the junctions of the pedicles 16 and the laminae 20.
The superior articular processes 26 are sharp oval plates of bone rising upward on each side from the union of the pedicle 16 with the lamina 20.
The inferior processes 28 are oval plates of bone that extend in an inferior direction on each side.
The superior and inferior articular processes 26 and 28 each have a natural bony structure known as a facet. The superior articular facet 30 faces upward or superiorly, while the inferior articular facet 31 faces downward. As Fig. 3 shows, when adjacent (i.e., cephalad and caudal) vertebrae 12 are aligned, the facets 30 and 31, capped with a smooth articular cartilage, interlock to form a facet joint 32, also known as a zygapophysial joint.
The facet joint 32 is composed of a superior half and an inferior half. The superior half is formed by the vertebral level below the joint 32, and the inferior half is formed by the vertebral level above the joint 32. For example, in the L4-L5 facet joint, the superior portion of the joint is formed by bony structure on the L-5 vertebra (e.g., a superior articular surface and supporting bone on the L-5 vertebra), and the inferior portion of the joint is formed by bony structure on the L-4 vertebra (e.g., an inferior articular surface and supporting bone on the L-4 vertebra).
As also shown in Fig. 3, an intervertebral disc 34 between each pair of vertebrae 12 permits relative movement between vertebrae 12. Thus, the structure and alignment of the vertebrae 12 permit a range of movement of the vertebrae 12 relative to each other.
II. FACET JOINT DYSFUNCTION
Back pain, particularly in the "small of the back", or lumbosacral (L4-S1) region, is a common ailment. In many cases, the pain severely limits a person's functional ability and quality of life. Such pain can result from a variety of spinal pathologies.
Through disease or injury, the laminae, spinous process, articular processes, or facets of one or more vertebrae can become damaged, such that the vertebrae no longer articulate or properly align with each other. This can result in an undesired anatomy, pain or discomfort, and loss of mobility.
For example, the vertebral facet joints can be damaged by either traumatic injury or by various disease processes. These disease processes include osteoarthritis, ankylosing spondylolysis, and degenerative spondylolisthesis. The damage to the facet joints often results in pressure on nerves, also called a "pinched" nerve, or nerve compression or impingement. The result is pain, misaligned anatomy, and a corresponding loss of mobility. Pressure on nerves can also occur without facet joint pathology, e.g., a herniated disc.
One type of conventional treatment of facet joint pathology is spinal stabilization, also known as intervertebral stabilization.
Intervertebral stabilization prevents relative motion between the vertebrae. By preventing movement, pain can be reduced. Stabilization can be accomplished by various methods.
REPLACEMENT OF NATURAL FACET JOINTS WITH
ARTIFICIAL FACET JOINT SURFACES
FIELD OF THE INVENTION
This invention relates to prostheses for treating various types of spinal pathologies, as well as to methods of treating spinal pathologies.
BACKGROUND OF THE INVENTION
I. VERTEBRAL ANATOMY
As Fig. 1 shows, the human spinal column 10 is comprised of a series of thirty-three stacked vertebrae 12 divided into five regions. The cervical region includes seven vertebrae 12, known as C1-C7. The thoracic region includes twelve vertebrae 12, known as T1-T12. The lumbar region contains five vertebrae 12, known as L1-L5. The sacral region is comprised of five vertebrae 12, known as 51-S5. The coccygeal region contains four vertebrae 12, known as Col-Co4.
Fig. 2 shows a normal human lumbar vertebra 12. Although the lumbar vertebrae 12 vary somewhat according to location, they share many features common to most vertebrae 12. Each vertebra 12 includes a vertebral body 14 and posterior elements as follows:
Two short bones, the pedicles 16, extend backward from each side of the vertebral body 14 to form a vertebral arch 18. At the posterior end of each pedicle 16 the vertebral arch 18 flares out into broad plates of bone known as the laminae 20. The laminae 20 fuse with each other to form a spinous process 22. The spinous process 22 serves for muscle and ligamentous attachment. A smooth transition from the pedicles 16 into the laminae 20 is interrupted by the formation of a series of processes.
Two transverse processes 24 thrust out laterally on each side from the junction of the pedicle 16 with the lamina 20. The transverse processes 24 serve as levers for the attachment of muscles to the vertebrae 12. Four articular processes, two superior 26 and two inferior 28, also rise from the junctions of the pedicles 16 and the laminae 20.
The superior articular processes 26 are sharp oval plates of bone rising upward on each side from the union of the pedicle 16 with the lamina 20.
The inferior processes 28 are oval plates of bone that extend in an inferior direction on each side.
The superior and inferior articular processes 26 and 28 each have a natural bony structure known as a facet. The superior articular facet 30 faces upward or superiorly, while the inferior articular facet 31 faces downward. As Fig. 3 shows, when adjacent (i.e., cephalad and caudal) vertebrae 12 are aligned, the facets 30 and 31, capped with a smooth articular cartilage, interlock to form a facet joint 32, also known as a zygapophysial joint.
The facet joint 32 is composed of a superior half and an inferior half. The superior half is formed by the vertebral level below the joint 32, and the inferior half is formed by the vertebral level above the joint 32. For example, in the L4-L5 facet joint, the superior portion of the joint is formed by bony structure on the L-5 vertebra (e.g., a superior articular surface and supporting bone on the L-5 vertebra), and the inferior portion of the joint is formed by bony structure on the L-4 vertebra (e.g., an inferior articular surface and supporting bone on the L-4 vertebra).
As also shown in Fig. 3, an intervertebral disc 34 between each pair of vertebrae 12 permits relative movement between vertebrae 12. Thus, the structure and alignment of the vertebrae 12 permit a range of movement of the vertebrae 12 relative to each other.
II. FACET JOINT DYSFUNCTION
Back pain, particularly in the "small of the back", or lumbosacral (L4-S1) region, is a common ailment. In many cases, the pain severely limits a person's functional ability and quality of life. Such pain can result from a variety of spinal pathologies.
Through disease or injury, the laminae, spinous process, articular processes, or facets of one or more vertebrae can become damaged, such that the vertebrae no longer articulate or properly align with each other. This can result in an undesired anatomy, pain or discomfort, and loss of mobility.
For example, the vertebral facet joints can be damaged by either traumatic injury or by various disease processes. These disease processes include osteoarthritis, ankylosing spondylolysis, and degenerative spondylolisthesis. The damage to the facet joints often results in pressure on nerves, also called a "pinched" nerve, or nerve compression or impingement. The result is pain, misaligned anatomy, and a corresponding loss of mobility. Pressure on nerves can also occur without facet joint pathology, e.g., a herniated disc.
One type of conventional treatment of facet joint pathology is spinal stabilization, also known as intervertebral stabilization.
Intervertebral stabilization prevents relative motion between the vertebrae. By preventing movement, pain can be reduced. Stabilization can be accomplished by various methods.
One method of stabilization is posterior spinal fusion. Another method of stabilization is anterior spinal fusion, fixation of any number of vertebrae to stabilize and prevent movement of the vertebrae.
Another type of conventional treatment is decompressive laminectomy.
This procedure involves excision of the laminae to relieve compression of nerves.
These traditional treatments are subject to a variety of limitations and varying success rates. Furthermore, none of the described treatments puts the spine in proper alignment or return the spine to a desired anatomy. In addition, stabilization techniques, by holding the vertebrae in a fixed position, permanently limit the relative motion of the vertebrae, altering spine biomechanics.
SiTMMARY OF THE INVENTION
There is a need for prostheses, installation tools, and methods that overcome the problems and disadvantages associated with current strategies and designs in various treatments for spine pathologies.
The invention provides prostheses, installation tools, and methods designed to replace natural facet joints at virtually all spinal levels including L1-L2, L2-L3, L3-L4, L4-L5, L5-S1, T-11-T12, and T12-Ll. The prostheses, installation tools, and methods can restore a desired anatomy to a spine and give back to an individual a desired range of relative vertebral motion. The prostheses, installation tools, and methods also can lessen or alleviate spinal pain by relieving the source of nerve compression or impingement.
For the sake of description, the prostheses that embody features of the invention will be called either "cephalad" or "caudal" with relation to the portion of a given natural facet joint they replace. As previously described, a given natural facet joint has a superior half and an inferior half. In anatomical terms, the superior half of the joint is formed by the vertebral level below the joint (which can thus be called the caudal portion of the facet joint, i.e., because it is near the feet). The inferior half of the joint is formed by the vertebral level above the joint (which can thus be called the cephalad portion of the facet joint, i.e., because it is near the head). Thus, a prosthesis that, in use, replaces the caudal portion of a facet joint (i.e., the superior half) will be called a "caudal" prosthesis. Likewise, a prosthesis that, in use, replaces the cephalad portion of a facet joint (i.e., the inferior half) will be called a "cephalad" prosthesis.
One aspect of the invention provides a cephalad facet joint prosthesis to replace a cephalad portion of a natural facet joint (e. g., an inferior articular surface and its supporting bone structure on the posterior elements of the vertebra) in the posterior elements of a vertebra. According to this aspect of the invention, the prosthesis includes an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint and a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted through a lamina portion of a vertebra to affix the artificial facet joint element to the vertebra, preferably without blocking access to a pedicle portion of the vertebra. The fixation element may also extend through a second lamina portion of the vertebra, such as by traversing the midline of the vertebra through or adjacent to the spinous process. In one embodiment, after installation the cephalad bearing element is disposed between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion.
This aspect of the invention also provides a method of implanting an artificial cephalad facet joint prosthesis .on a vertebra and/or the posterior elements of a vertebra. According to this method, a fixation element is inserted through a lamina portion of the vertebra, and a cephalad facet joint bearing surface is placed in a position to form a cephalad portion of a facet joint. An artificial facet joint element is attached to a distal end of the fixation element either after or prior to insertion of the fixation element. The fixation element preferably does not block access to a pedicle portion of the vertebra. The fixation element may also extend through a second lamina portion of the vertebra, such as by traversing the midline of the vertebra through or adjacent to the spinous process. In one embodiment, the placing step includes disposing the artificial facet joint bearing surface between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion. The method may also include the steps of using a guide to define an insertion path for the fixation element and forming a passage through the lamina corresponding to the insertion path.
Another aspect of the invention provides a prosthesis to replace a cephalad portion of a natural facet joint on a vertebra. In this aspect of the invention the prosthesis includes an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint; and a fixation element adapted and configured to affix the artificial facet joint element to the vertebra without blocking access to a pedicle portion of the vertebra. In one embodiment, after installation the cephalad bearing element is disposed between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion.
This aspect of the invention also provides a method for implanting a cephalad facet joint prosthesis to replace a removed cephalad portion of a natural facet joint on a vertebra. The method includes the steps of aligning the cephalad facet joint prosthesis with a caudal facet joint bearing surface; and attaching the cephalad facet joint prosthesis to the vertebra without blocking a pedicle portion of the vertebra. The attaching step of the method may also include disposing the cephalad facet joint prosthesis between the caudal facet joint bearing surface and a portion of the vertebra. The attaching step may also include the step of inserting a fixation element through a portion of the vertebra, such as the lamina. In this case, the method may include the steps of defining an insertion path in the vertebra prior to the inserting step and forming a passage in the vertebra corresponding to the insertion path. A guide may be used to direct the location and orientation of the insertion path.
Another aspect of the invention provides a facet joint prosthesis to replace, on a vertebra, a caudal portion of a natural facet joint (e. g., a superior articular surface and supporting bone structure on the vertebra). The prosthesis includes an artificial facet joint element with a vertebra contacting surface and a caudal bearing surface, the caudal bearing surface being adapted and configured to replace a caudal portion of a natural facet joint and to be substantially entirely posterior of a contact portion of the vertebra when the vertebra contacting surface contacts the contact portion. The prosthesis also includes a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted into the vertebra to affix .the prosthesis to the vertebra.
Another aspect of the invention provides a prosthesis for replacing a caudal portion and a cephalad portion of a natural facet joint of cephalad and caudal vertebrae of a spine motion segment. The prosthesis includes an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, the artificial cephalad facet joint element having a cephalad bearing surface; a cephalad fixation element, the cephalad fixation element being adapted and configured to be inserted through a lamina portion of a vertebra to affix the artificial cephalad facet joint element to the cephalad vertebra; and an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element including a caudal bearing surface adapted and configured to mate with the cephalad bearing surface.
Yet another aspect of the invention provides a method for implanting a facet joint prosthesis to replace removed cephalad and caudal portions of a natural facet joint of cephalad and caudal vertebrae. The method includes the steps of: affixing an artificial caudal facet joint element to the caudal vertebra; inserting a cephalad fixation element through a lamina portion of the cephalad vertebra; and placing an artificial cephalad facet joint bearing surface in a position to form a cephalad portion of a facet joint. The method may also include attaching an artificial cephalad facet joint element comprising the cephalad facet joint bearing surface to an end of the fixation element either prior to or after the inserting step. In one embodiment, the fixation element does not block access to a pedicle portion of the cephalad vertebra. The cephalad fixation element may also extend through a second lamina portion of the cephalad vertebra, such as by traversing the midline of the cephalad vertebra through or adjacent to the spinous process. The placing step may also include the step of disposing the artificial cephalad facet joint bearing surface between the artificial caudal facet joint element and a portion of the cephalad vertebra. An installation fixture may be used to align the caudal and cephalad elements, although the prosthesis may also be installed without using an installation fixture. The method may also include the step of using a guide to define an insertion path for the cephalad fixation element, although the prosthesis may also be installed without using a guide.
Another aspect of the invention provides a prosthesis to replace a caudal portion and a cephalad portion of a natural facet joint of cephalad and caudal vertebrae. The prosthesis may include an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, with the artificial cephalad facet 3 0 joint element including a cephalad bearing surface; a cephalad fixation element adapted and configured to affix the artificial cephalad facet joint element to the cephalad vertebra without blocking access to a pedicle portion of the cephalad vertebra; and an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element including a caudal bearing surface adapted and configured to mate with the cephalad bearing surface. In one embodiment, after installation the cephalad facet joint bearing surface is disposed between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion. In one embodiment, the cephalad bearing surface and the Caudal bearing surface each has a width along its respective transverse axis, with the cephalad bearing surface width being shorter than the caudal bearing surface width. The artificial caudal facet joint element may also include a vertebra contacting surface, with the entire caudal bearing surface being adapted and configured to be posterior of a contact portion of the caudal vertebra when the vertebra contacting surface contacts the contact portion.
This aspect of the invention also includes a method for implanting a facet joint prosthesis to replace removed cephalad and caudal portions of a natural facet joint of cephalad and caudal vertebrae. The method includes the steps of affixing an artificial caudal facet joint element to the caudal vertebra; and affixing an artificial cephalad facet joint element to the cephalad vertebra in alignment with the artificial caudal facet joint element and without blocking access to a pedicle portion of the cephalad vertebra. The second affixing step may also include the step of disposing the artificial cephalad facet joint element between the artificial caudal facet joint element and a portion of the cephalad vertebra. An installation fixture may be used to align the caudal and cephalad element, although the prosthesis may also be installed without using an installation fixture. The method may also include the step of using a guide to define an insertion path for the cephalad fixation element, although the prosthesis may also be installed without using a guide.
Other features and advantages of the inventions are set forth in the following Description and Drawings, as well as in the appended Claims.
DESCRIPTION OF THE DRAWINGS
Figure 1 is a lateral elevation view of a normal human spinal column;
Figure 2 is a superior view of a normal human lumbar vertebra;
Figure 3 is a lateral elevation view of a vertebral lumbar facet joint;
Figure 4 is a posterior view of an artificial facet joint prosthesis installed in a patient according to one embodiment of this invention;
Figure 5 is a left side view of the embodiment of Figure 4, as installed in a patient;
Figure 6 is yet another view of the embodiment of Figure 4, as installed in a patient;
Figure 7A is a cross-sectional view of a cephalad bearing element and fixation element according to the embodiment of Figure 4;
Figure 7B is a posterior view of a pair of artificial cephalad and _ g _ caudal facet joint prostheses according to one embodiment of this invention;
Figure 7C is a top view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 7D is a left view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 7E is a bottom view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 7F is an anterior view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 8A is a perspective view of an installation fixture according to one embodiment of this invention;
Figure 8B is a top view of the installation fixture of Figure 8A;
Figure SC is a side view of the installation fixture of Figure 8A;
Figure 8D is a back view of the installation fixture of Figure 8A;
Figure 9 is an exploded view of the installation fixture of Figure 8 along with a pair of caudal facet bearing elements and a pair of cephalad facet bearing elements according to one embodiment of the invention;
Figures 10A-D are views of a guide tool according to one embodiment of the invention;
Figure 11 is a posterior view of the installation fixture of Figures 8 and 9 to which a pair of caudal facet bearing elements and a pair of cephalad bearing elements have been attached and with the caudal bearing elements attached to the patient;
Figure 12 is a left side view of the installation fixture and bearing elements of Figure 11 with the caudal bearing elements attached to the patient;
Figure 13 is a perspective view of the installation fixture and bearing elements of Figures 11 and 12 showing a guide tool according to one embodiment of this invention;
Figure 14 is a perspective view of the installation fixture and bearing elements of Figures 11 and 12 showing the use of a drill bit with the guide tool according to one embodiment of this invention.
The invention may be embodied in several forms without departing from its spirit or essential characteristics. The scope of the invention is defined in the appended claims, rather than in the specific description preceding them. All embodiments that fall within the meaning and range of equivalency of the claims are therefore intended to be embraced by the claims.
DETAILED DESCRIPTION
Another type of conventional treatment is decompressive laminectomy.
This procedure involves excision of the laminae to relieve compression of nerves.
These traditional treatments are subject to a variety of limitations and varying success rates. Furthermore, none of the described treatments puts the spine in proper alignment or return the spine to a desired anatomy. In addition, stabilization techniques, by holding the vertebrae in a fixed position, permanently limit the relative motion of the vertebrae, altering spine biomechanics.
SiTMMARY OF THE INVENTION
There is a need for prostheses, installation tools, and methods that overcome the problems and disadvantages associated with current strategies and designs in various treatments for spine pathologies.
The invention provides prostheses, installation tools, and methods designed to replace natural facet joints at virtually all spinal levels including L1-L2, L2-L3, L3-L4, L4-L5, L5-S1, T-11-T12, and T12-Ll. The prostheses, installation tools, and methods can restore a desired anatomy to a spine and give back to an individual a desired range of relative vertebral motion. The prostheses, installation tools, and methods also can lessen or alleviate spinal pain by relieving the source of nerve compression or impingement.
For the sake of description, the prostheses that embody features of the invention will be called either "cephalad" or "caudal" with relation to the portion of a given natural facet joint they replace. As previously described, a given natural facet joint has a superior half and an inferior half. In anatomical terms, the superior half of the joint is formed by the vertebral level below the joint (which can thus be called the caudal portion of the facet joint, i.e., because it is near the feet). The inferior half of the joint is formed by the vertebral level above the joint (which can thus be called the cephalad portion of the facet joint, i.e., because it is near the head). Thus, a prosthesis that, in use, replaces the caudal portion of a facet joint (i.e., the superior half) will be called a "caudal" prosthesis. Likewise, a prosthesis that, in use, replaces the cephalad portion of a facet joint (i.e., the inferior half) will be called a "cephalad" prosthesis.
One aspect of the invention provides a cephalad facet joint prosthesis to replace a cephalad portion of a natural facet joint (e. g., an inferior articular surface and its supporting bone structure on the posterior elements of the vertebra) in the posterior elements of a vertebra. According to this aspect of the invention, the prosthesis includes an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint and a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted through a lamina portion of a vertebra to affix the artificial facet joint element to the vertebra, preferably without blocking access to a pedicle portion of the vertebra. The fixation element may also extend through a second lamina portion of the vertebra, such as by traversing the midline of the vertebra through or adjacent to the spinous process. In one embodiment, after installation the cephalad bearing element is disposed between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion.
This aspect of the invention also provides a method of implanting an artificial cephalad facet joint prosthesis .on a vertebra and/or the posterior elements of a vertebra. According to this method, a fixation element is inserted through a lamina portion of the vertebra, and a cephalad facet joint bearing surface is placed in a position to form a cephalad portion of a facet joint. An artificial facet joint element is attached to a distal end of the fixation element either after or prior to insertion of the fixation element. The fixation element preferably does not block access to a pedicle portion of the vertebra. The fixation element may also extend through a second lamina portion of the vertebra, such as by traversing the midline of the vertebra through or adjacent to the spinous process. In one embodiment, the placing step includes disposing the artificial facet joint bearing surface between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion. The method may also include the steps of using a guide to define an insertion path for the fixation element and forming a passage through the lamina corresponding to the insertion path.
Another aspect of the invention provides a prosthesis to replace a cephalad portion of a natural facet joint on a vertebra. In this aspect of the invention the prosthesis includes an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint; and a fixation element adapted and configured to affix the artificial facet joint element to the vertebra without blocking access to a pedicle portion of the vertebra. In one embodiment, after installation the cephalad bearing element is disposed between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion.
This aspect of the invention also provides a method for implanting a cephalad facet joint prosthesis to replace a removed cephalad portion of a natural facet joint on a vertebra. The method includes the steps of aligning the cephalad facet joint prosthesis with a caudal facet joint bearing surface; and attaching the cephalad facet joint prosthesis to the vertebra without blocking a pedicle portion of the vertebra. The attaching step of the method may also include disposing the cephalad facet joint prosthesis between the caudal facet joint bearing surface and a portion of the vertebra. The attaching step may also include the step of inserting a fixation element through a portion of the vertebra, such as the lamina. In this case, the method may include the steps of defining an insertion path in the vertebra prior to the inserting step and forming a passage in the vertebra corresponding to the insertion path. A guide may be used to direct the location and orientation of the insertion path.
Another aspect of the invention provides a facet joint prosthesis to replace, on a vertebra, a caudal portion of a natural facet joint (e. g., a superior articular surface and supporting bone structure on the vertebra). The prosthesis includes an artificial facet joint element with a vertebra contacting surface and a caudal bearing surface, the caudal bearing surface being adapted and configured to replace a caudal portion of a natural facet joint and to be substantially entirely posterior of a contact portion of the vertebra when the vertebra contacting surface contacts the contact portion. The prosthesis also includes a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted into the vertebra to affix .the prosthesis to the vertebra.
Another aspect of the invention provides a prosthesis for replacing a caudal portion and a cephalad portion of a natural facet joint of cephalad and caudal vertebrae of a spine motion segment. The prosthesis includes an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, the artificial cephalad facet joint element having a cephalad bearing surface; a cephalad fixation element, the cephalad fixation element being adapted and configured to be inserted through a lamina portion of a vertebra to affix the artificial cephalad facet joint element to the cephalad vertebra; and an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element including a caudal bearing surface adapted and configured to mate with the cephalad bearing surface.
Yet another aspect of the invention provides a method for implanting a facet joint prosthesis to replace removed cephalad and caudal portions of a natural facet joint of cephalad and caudal vertebrae. The method includes the steps of: affixing an artificial caudal facet joint element to the caudal vertebra; inserting a cephalad fixation element through a lamina portion of the cephalad vertebra; and placing an artificial cephalad facet joint bearing surface in a position to form a cephalad portion of a facet joint. The method may also include attaching an artificial cephalad facet joint element comprising the cephalad facet joint bearing surface to an end of the fixation element either prior to or after the inserting step. In one embodiment, the fixation element does not block access to a pedicle portion of the cephalad vertebra. The cephalad fixation element may also extend through a second lamina portion of the cephalad vertebra, such as by traversing the midline of the cephalad vertebra through or adjacent to the spinous process. The placing step may also include the step of disposing the artificial cephalad facet joint bearing surface between the artificial caudal facet joint element and a portion of the cephalad vertebra. An installation fixture may be used to align the caudal and cephalad elements, although the prosthesis may also be installed without using an installation fixture. The method may also include the step of using a guide to define an insertion path for the cephalad fixation element, although the prosthesis may also be installed without using a guide.
Another aspect of the invention provides a prosthesis to replace a caudal portion and a cephalad portion of a natural facet joint of cephalad and caudal vertebrae. The prosthesis may include an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, with the artificial cephalad facet 3 0 joint element including a cephalad bearing surface; a cephalad fixation element adapted and configured to affix the artificial cephalad facet joint element to the cephalad vertebra without blocking access to a pedicle portion of the cephalad vertebra; and an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element including a caudal bearing surface adapted and configured to mate with the cephalad bearing surface. In one embodiment, after installation the cephalad facet joint bearing surface is disposed between a caudal facet joint bearing surface and a portion of the vertebra, such as a lamina portion. In one embodiment, the cephalad bearing surface and the Caudal bearing surface each has a width along its respective transverse axis, with the cephalad bearing surface width being shorter than the caudal bearing surface width. The artificial caudal facet joint element may also include a vertebra contacting surface, with the entire caudal bearing surface being adapted and configured to be posterior of a contact portion of the caudal vertebra when the vertebra contacting surface contacts the contact portion.
This aspect of the invention also includes a method for implanting a facet joint prosthesis to replace removed cephalad and caudal portions of a natural facet joint of cephalad and caudal vertebrae. The method includes the steps of affixing an artificial caudal facet joint element to the caudal vertebra; and affixing an artificial cephalad facet joint element to the cephalad vertebra in alignment with the artificial caudal facet joint element and without blocking access to a pedicle portion of the cephalad vertebra. The second affixing step may also include the step of disposing the artificial cephalad facet joint element between the artificial caudal facet joint element and a portion of the cephalad vertebra. An installation fixture may be used to align the caudal and cephalad element, although the prosthesis may also be installed without using an installation fixture. The method may also include the step of using a guide to define an insertion path for the cephalad fixation element, although the prosthesis may also be installed without using a guide.
Other features and advantages of the inventions are set forth in the following Description and Drawings, as well as in the appended Claims.
DESCRIPTION OF THE DRAWINGS
Figure 1 is a lateral elevation view of a normal human spinal column;
Figure 2 is a superior view of a normal human lumbar vertebra;
Figure 3 is a lateral elevation view of a vertebral lumbar facet joint;
Figure 4 is a posterior view of an artificial facet joint prosthesis installed in a patient according to one embodiment of this invention;
Figure 5 is a left side view of the embodiment of Figure 4, as installed in a patient;
Figure 6 is yet another view of the embodiment of Figure 4, as installed in a patient;
Figure 7A is a cross-sectional view of a cephalad bearing element and fixation element according to the embodiment of Figure 4;
Figure 7B is a posterior view of a pair of artificial cephalad and _ g _ caudal facet joint prostheses according to one embodiment of this invention;
Figure 7C is a top view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 7D is a left view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 7E is a bottom view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 7F is an anterior view of a pair of artificial cephalad and caudal facet joint prostheses in the embodiment of Figure 7A;
Figure 8A is a perspective view of an installation fixture according to one embodiment of this invention;
Figure 8B is a top view of the installation fixture of Figure 8A;
Figure SC is a side view of the installation fixture of Figure 8A;
Figure 8D is a back view of the installation fixture of Figure 8A;
Figure 9 is an exploded view of the installation fixture of Figure 8 along with a pair of caudal facet bearing elements and a pair of cephalad facet bearing elements according to one embodiment of the invention;
Figures 10A-D are views of a guide tool according to one embodiment of the invention;
Figure 11 is a posterior view of the installation fixture of Figures 8 and 9 to which a pair of caudal facet bearing elements and a pair of cephalad bearing elements have been attached and with the caudal bearing elements attached to the patient;
Figure 12 is a left side view of the installation fixture and bearing elements of Figure 11 with the caudal bearing elements attached to the patient;
Figure 13 is a perspective view of the installation fixture and bearing elements of Figures 11 and 12 showing a guide tool according to one embodiment of this invention;
Figure 14 is a perspective view of the installation fixture and bearing elements of Figures 11 and 12 showing the use of a drill bit with the guide tool according to one embodiment of this invention.
The invention may be embodied in several forms without departing from its spirit or essential characteristics. The scope of the invention is defined in the appended claims, rather than in the specific description preceding them. All embodiments that fall within the meaning and range of equivalency of the claims are therefore intended to be embraced by the claims.
DETAILED DESCRIPTION
Although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention that may be embodied in other specific structure. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.
Figures 4-7 show artificial cephalad and caudal facet joint prostheses 36 and 50 for replacing a natural facet joint according to one aspect of this invention. Cephalad prosthesis 36 has a bearing element 38 with a bearing surface 40. In this embodiment, bearing surface 40 has a convex shape. Bearing element 38 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts, and bearing surface 40 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts.
Depending on the patient's disease state, the condition of the patient's natural facet joint-including the facet joint's strength, location and orientation-may not be acceptable. As shown in Figures 4-7, therefore, the natural cephalad and caudal facet joint surfaces have been removed to enable the installation of a prosthetic facet joint without limitations presented by remaining portions of the natural facet joint.
In one embodiment of the invention, fixation element 42 attaches cephalad prosthesis-36 to a vertebra 60 in an orientation and position that places bearing surface 40 in approximately the same location as the natural facet joint surface the prosthesis replaces. The prosthesis may also be placed in a location other than the natural facet joint location without departing from the invention, such as by orienting the fixation element along a different angle, by moving the joint cephalad or caudad, or by moving the joint medially or laterally.
In the embodiment shown in Figures 4-7, fixation element 42 is a screw. Other possible fixation elements include headless screws, stems, corkscrews, wire, staples, adhesives, bone cements, and other materials known in the prosthetic arts.
In this embodiment of the invention, the cephalad facet joint prosthesis attaches to a posterior element of the vertebra, such as one or portions of the lamina and/or the spinous process. For example, as shown in Figures 4-6, fixation element 42 may extend through a lamina portion 62 of vertebra 60 at the base of spinous process 64, traversing the vertebra midline as defined by the spinous process 64 and through another lamina portion 66. This orientation of the fixation element is similar to that used in translaminar facet joint screw fixation, as known in the art. Other orientations of fixation element 42 are possible, of course, depending on the dictates of the specific vertebral anatomy and the desires of the clinician. For example, fixation element 42 may extend through only one lamina portion, only through the spinous process, etc.
Unlike other facet joint prostheses that attach to the pedicle, this embodiment's use of one or more posterior elements of the vertebra to attach the cephalad facet joint prosthesis of this invention does not block access to the pedicle area, leaving this area free to be used to attach other prostheses or devices. Other embodiments of the invention may block the pedicle area, of course, without departing from the scope or spirit of the invention. In addition, because of the inherent strength of the lamina, the cephalad facet joint prosthesis may be affixed without the use of bone cement, especially when using a bone ingrowth surface or trabecular metal.
In the orientation shown in Figures 4=6 as well as in some alternative embodiments, after insertion the fixation element's proximal end 43 (preferably formed to mate with a suitable insertion tool) and distal end 44 lie on opposite sides of the lamina. Bearing element 38 attaches to the distal end 44 of fixation element 42 to be disposed between a caudal facet joint bearing surface (either natural or artificial, such as the artificial caudal facet joint prosthesis described below) and a portion of the vertebra, such as the lamina portion shown in Figures 4-6. To attach bearing element 38 to fixation element 42 in the embodiment shown in Figure 4, a hole 46 in bearing element 38 is formed with a Morse taper that mates with the distal end 44 of fixation element 42. Other means of attaching bearing element 38 to fixation element 42 may be used, of course, such as other Morse or other taper connections, machine screw threads, NPT screw threads or other known mechanical fastening means. Fixation element 42 may be coated with antimicrobial, antithrombotic, hydroxyapatite, or osteoinductive materials to promote bone ingrowth and fixation. Bearing element 38 may be attached to fixation element 42 before or after implantation in the patient, depending on the manner of implantation and the requirements of the situation.
Prosthesis 36 may be used to form the cephalad portion of a facet joint with either a natural caudal facet joint portion or an artificial caudal facet joint prosthesis.
Figures 4-7 also show an artificial caudal joint prosthesis 50 for replacing the superior half of a natural facet joint according to one aspect of this invention. Caudal prosthesis 50 has a bearing element 52 with a bearing surface 54. In this embodiment, bearing surface 54 is concave. Bearing element 52 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts, and bearing surface 54 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts.
In one embodiment, the natural caudal facet surface has been removed, and fixation element 56 attaches prosthesis 50 to a vertebra 70 via a pedicle in an orientation and position that places bearing surface 54 in approximately the same location as the natural facet joint surface the prosthesis replaces. In an alternative embodiment, the bearing surface 54 may be placed in a location different than the natural facet joint surface, either more medial or more lateral, more cephalad or more caudad, and/or rotated from the natural anatomical orientation and orientation. In addition, in other embodiments the caudal component can be attached to the vertebral body in addition to the pedicle or to the vertebral body alone.
As shown in the embodiment of Figures 4-7, fixation element 56 is a screw attached to bearing element 54 via a hole 58 formed in bearing element 52 and is inserted into a pedicle portion 72 of vertebra 70.
Other possible fixation elements include stems, corkscrews, wire, staples, adhesives, bone cements, and other materials known in the prosthetic arts. Fixation element 56 can also be inserted into the vertebral body in addition to or in place of the pedicle.
In this embodiment, bearing element 52 has a serrated fixation surface 57 adapted to contact a contact portion 74 of vertebra 70. This optional fixation surface 57 helps prevent rotation of the bearing element 52. In addition, fixation surface 57 may be coated with bone ingrowth material, and any optional serrations increase the surface area for bone ingrowth. As shown in Figure 5, in this embodiment the entire bearing surface 54 is posterior to surface 57 and contact portion 74.
Prosthesis 50 may be used to form the caudal portion of a facet joint with either a natural cephalad facet joint portion or an artificial cephalad facet joint prosthesis.
Figures 7A-F show the artificial facet joint prosthesis according to one embodiment of this invention apart from the vertebrae. As shown, cephalad bearing surface 40 and caudal bearing surface 54 meet to form an artificial facet joint. As seen best in Figure 7B, the width of caudal bearing surface 54 along its transverse axis is greater than the width of cephalad bearing surface 40 along its transverse axis. This feature helps align the cephalad and caudal joints during implant. In addition, this feature permits the point of contact between the two bearing surface to change with flexion, extension, left and right rotation and lateral bending of the patient's spine.
The prostheses of Figures 4-7 may be implanted without special tools. One embodiment of the invention, however, includes an installation fixture to assist with the implantation procedure. Figures 8-14 show installation tools used to implant two artificial facet joints, i.e., two cephalad facet joint prostheses and two corresponding caudal facet joint prostheses. The invention also includes installation tools for implanting a single facet joint prosthesis, two caudal facet joint prostheses, two cephalad facet joint prostheses, a caudal and cephalad joint prosthesis, or any other combination of facet joint prostheses.
As shown in Figures 8 and 9, installation fixture 80 has alignment elements 82 to align the cephalad bearing elements 38 and caudal bearing elements 52. In this embodiment, the alignment elements are two dowels for each bearing element. Alignment elements 82 mate with corresponding alignment elements in the bearing elements, such as holes 84 (shown, e.g., in Figure 7B) formed in cephalad bearing elements 38 and caudal bearing elements 52. Other alignment elements may be used, of course, such as pins, grooves, indentations, etc. Attachment elements such as screws 86 attach the bearing elements 38 and 52 to the installation fixture via screw holes 88 (shown, e.g., in Figure 7B) formed in the bearing elements and in installation fixture 80.
When attached to installation fixture 80, cephalad and caudal bearing surfaces 40 and 54 are in contact and in proper alignment with respect to each other, as shown in Figure 8. In one embodiment, the cephalad and caudal bearing surfaces 40 and 54 are preloaded to be in compression when attached to installation fixture 80. To bring the pairs of bearing surfaces in proper alignment with respect to the patient's vertebrae, the spacing between the pairs of bearing surfaces might need to be adjusted. In the embodiment of Figures 8, 9 and 11-14, installation fixture 80 has two bearing support components 90 and 92 that move in a controlled manner with respect to each other. Specifically, in this embodiment a threaded shaft 94 extends between support components 90 and 92. Shaft 94 engages bores formed in support components 90 and 92; one or both of the bores are threaded so that rotation of shaft 94 causes support components 90 and 92 to move towards or away from each other.
Shaft 94 may be provided with a thumbwheel 96 or other actuator for ease of use. One or more guide rods 98 may be provided to maintain the alignment of support components 90 and 92. Other means of moving the cephalad/caudal bearing elements pairs with respect to each other may be used, such as a guided or unguided sliding connection between installation fixture elements.
In use, after preparing the implant site by removal of all or a portion of existing natural cephalad and caudal facet joint portions of the cephalad and caudal vertebrae 60 and 70, respectively, of the spine motion segment, bearing elements 38 and 52 are attached to installation fixture 80 as described above. The spacing between the bearing element pairs is then adjusted using thumbwheel 96 to align the fixation holes 58 of caudal bearing elements 52 with the proper fixation screw insertion sites in the pedicle portions of the caudal vertebra (or other suitable location), thus placing the artificial facet joints in positions corresponding to the position of natural facet joints or in any other position desired by the physician, including positions that do not correspond to the position of natural facet joints. Passages aligning with holes 58 are formed and in the pedicle-or into another part of the caudal vertebra near or adjacent to the pedicle-using a drill, awl, pedicle probe, or other tool known in the surgical arts. Fixation screws 56 are then inserted through holes 58 into the pedicle or other portion of the caudal vertebra to attach the caudal bearing elements as well as the entire prosthesis and installation fixture to the caudal vertebra 70, as shown in Figures 11 and 12. Alternatively, self-tapping screws or other caudal fixation elements may be used, thereby eliminating the need to pre-form the passages.
Thereafter, the cephalad bearing elements are attached to the cephalad vertebra 60. In one embodiment, an insertion path is first determined for each fixation element, then a passage is formed along the insertion path corresponding to cephalad bearing element holes 46 (e. g., in the lamina at the base of the spinous process and through the lamina on the other side, through only one lamina portion, through the spinous process, etc.). Fixation screws 42 can then be inserted through the holes 46 into the passages. Alternatively, self-tapping screws or other caudal fixation elements may be used, thereby eliminating the need to pre-form the passages.
After all four bearing elements have been affixed, the installation fixture 80 may be detached and removed. Installation fixture 80 may be used to implant fewer than four bearing elements, of course.
Figures 10, 13 and 14 show a tool that may be used to define the insertion path (location, orientation, etc.) for the fixation element of the left cephalad bearing element. For example, the tool may be used to guide the formation of a cephalad bearing element attachment passage for the left bearing element. A corresponding mirror image tool may be used for the right cephalad bearing element. In alternative embodiments, a single tool may be used for defining the insertion path for both left and right cephalad bearing elements.
As shown, tool 100 has a handle 102 and an alignment interface (such as dowels 104 in tool 100 and holes 106 in fixture 80) to align the tool in the proper orientation with respect to installation fixture 80 and a cephalad facet joint bearing element. With the caudal and cephalad bearing elements still attached to installation fixture 80 and preferably with caudal bearing elements already affixed to the caudal vertebra 70, tool 100 engages installation fixture through the alignment interface as shown in Figures 13 and 14. In this position, tool 100 may be used to define an insertion path for the cephalad fixation elements.
In the embodiment shown in Figures 10, 13 and 14, the insertion path guide is a drill guide 108 supported by arms 110 and 112 and is aligned with hole 46 in cephalad bearing element 38 by the alignment interface between installation fixture 80 and guide tool 100. In this embodiment, drill guide 108 is a tube, but other guide elements may be used, such as a guide groove or surface. A drill bit 114 may be inserted through drill guide 108 to form an insertion passage, such as a passage through a lamina portion of the cephalad vertebra. A fixation screw may then be inserted through the passage in the cephalad vertebra and into the Morse taper connection of hole 46 (or other type connection, as discussed above) of cephalad bearing element 38. As discussed above, the fixation screw may be coated with a bone ingrowth material. Alternatively, a self-tapping screw may be used, thereby removing the need to pre-form a passage.
A mirror image tool may then be used to define an insertion path or to form a hole for the right cephalad bearing element, which is then affixed to the vertebral body in the same way. The installation fixture is then removed, such as by unscrewing screws 86.
As mentioned above, in alternative embodiments the guide tool may be used to define a path for a self-tapping screw or other fixation element that does not require the use of a drill. In those embodiments, element 108 may be used to define a path for the self-tapping screw or other fixation element. The fixation element path may be through only a single lamina portion, through the spinous process alone, or any other suitable path.
In some embodiments, the entire prosthesis other than the bearing surface may be coated with bone ingrowth material.
The above described embodiments of this invention are merely descriptive of its principles and are not to be limited. The scope of this invention instead shall be determined from the scope of the following claims, including their equivalents.
Figures 4-7 show artificial cephalad and caudal facet joint prostheses 36 and 50 for replacing a natural facet joint according to one aspect of this invention. Cephalad prosthesis 36 has a bearing element 38 with a bearing surface 40. In this embodiment, bearing surface 40 has a convex shape. Bearing element 38 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts, and bearing surface 40 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts.
Depending on the patient's disease state, the condition of the patient's natural facet joint-including the facet joint's strength, location and orientation-may not be acceptable. As shown in Figures 4-7, therefore, the natural cephalad and caudal facet joint surfaces have been removed to enable the installation of a prosthetic facet joint without limitations presented by remaining portions of the natural facet joint.
In one embodiment of the invention, fixation element 42 attaches cephalad prosthesis-36 to a vertebra 60 in an orientation and position that places bearing surface 40 in approximately the same location as the natural facet joint surface the prosthesis replaces. The prosthesis may also be placed in a location other than the natural facet joint location without departing from the invention, such as by orienting the fixation element along a different angle, by moving the joint cephalad or caudad, or by moving the joint medially or laterally.
In the embodiment shown in Figures 4-7, fixation element 42 is a screw. Other possible fixation elements include headless screws, stems, corkscrews, wire, staples, adhesives, bone cements, and other materials known in the prosthetic arts.
In this embodiment of the invention, the cephalad facet joint prosthesis attaches to a posterior element of the vertebra, such as one or portions of the lamina and/or the spinous process. For example, as shown in Figures 4-6, fixation element 42 may extend through a lamina portion 62 of vertebra 60 at the base of spinous process 64, traversing the vertebra midline as defined by the spinous process 64 and through another lamina portion 66. This orientation of the fixation element is similar to that used in translaminar facet joint screw fixation, as known in the art. Other orientations of fixation element 42 are possible, of course, depending on the dictates of the specific vertebral anatomy and the desires of the clinician. For example, fixation element 42 may extend through only one lamina portion, only through the spinous process, etc.
Unlike other facet joint prostheses that attach to the pedicle, this embodiment's use of one or more posterior elements of the vertebra to attach the cephalad facet joint prosthesis of this invention does not block access to the pedicle area, leaving this area free to be used to attach other prostheses or devices. Other embodiments of the invention may block the pedicle area, of course, without departing from the scope or spirit of the invention. In addition, because of the inherent strength of the lamina, the cephalad facet joint prosthesis may be affixed without the use of bone cement, especially when using a bone ingrowth surface or trabecular metal.
In the orientation shown in Figures 4=6 as well as in some alternative embodiments, after insertion the fixation element's proximal end 43 (preferably formed to mate with a suitable insertion tool) and distal end 44 lie on opposite sides of the lamina. Bearing element 38 attaches to the distal end 44 of fixation element 42 to be disposed between a caudal facet joint bearing surface (either natural or artificial, such as the artificial caudal facet joint prosthesis described below) and a portion of the vertebra, such as the lamina portion shown in Figures 4-6. To attach bearing element 38 to fixation element 42 in the embodiment shown in Figure 4, a hole 46 in bearing element 38 is formed with a Morse taper that mates with the distal end 44 of fixation element 42. Other means of attaching bearing element 38 to fixation element 42 may be used, of course, such as other Morse or other taper connections, machine screw threads, NPT screw threads or other known mechanical fastening means. Fixation element 42 may be coated with antimicrobial, antithrombotic, hydroxyapatite, or osteoinductive materials to promote bone ingrowth and fixation. Bearing element 38 may be attached to fixation element 42 before or after implantation in the patient, depending on the manner of implantation and the requirements of the situation.
Prosthesis 36 may be used to form the cephalad portion of a facet joint with either a natural caudal facet joint portion or an artificial caudal facet joint prosthesis.
Figures 4-7 also show an artificial caudal joint prosthesis 50 for replacing the superior half of a natural facet joint according to one aspect of this invention. Caudal prosthesis 50 has a bearing element 52 with a bearing surface 54. In this embodiment, bearing surface 54 is concave. Bearing element 52 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts, and bearing surface 54 may be formed from biocompatible metals (such as cobalt chromium steel, surgical steels, titanium, titanium alloys, tantalum, tantalum alloys, aluminum, etc.), ceramics, polyethylene, biocompatible polymers, and other materials known in the prosthetic arts.
In one embodiment, the natural caudal facet surface has been removed, and fixation element 56 attaches prosthesis 50 to a vertebra 70 via a pedicle in an orientation and position that places bearing surface 54 in approximately the same location as the natural facet joint surface the prosthesis replaces. In an alternative embodiment, the bearing surface 54 may be placed in a location different than the natural facet joint surface, either more medial or more lateral, more cephalad or more caudad, and/or rotated from the natural anatomical orientation and orientation. In addition, in other embodiments the caudal component can be attached to the vertebral body in addition to the pedicle or to the vertebral body alone.
As shown in the embodiment of Figures 4-7, fixation element 56 is a screw attached to bearing element 54 via a hole 58 formed in bearing element 52 and is inserted into a pedicle portion 72 of vertebra 70.
Other possible fixation elements include stems, corkscrews, wire, staples, adhesives, bone cements, and other materials known in the prosthetic arts. Fixation element 56 can also be inserted into the vertebral body in addition to or in place of the pedicle.
In this embodiment, bearing element 52 has a serrated fixation surface 57 adapted to contact a contact portion 74 of vertebra 70. This optional fixation surface 57 helps prevent rotation of the bearing element 52. In addition, fixation surface 57 may be coated with bone ingrowth material, and any optional serrations increase the surface area for bone ingrowth. As shown in Figure 5, in this embodiment the entire bearing surface 54 is posterior to surface 57 and contact portion 74.
Prosthesis 50 may be used to form the caudal portion of a facet joint with either a natural cephalad facet joint portion or an artificial cephalad facet joint prosthesis.
Figures 7A-F show the artificial facet joint prosthesis according to one embodiment of this invention apart from the vertebrae. As shown, cephalad bearing surface 40 and caudal bearing surface 54 meet to form an artificial facet joint. As seen best in Figure 7B, the width of caudal bearing surface 54 along its transverse axis is greater than the width of cephalad bearing surface 40 along its transverse axis. This feature helps align the cephalad and caudal joints during implant. In addition, this feature permits the point of contact between the two bearing surface to change with flexion, extension, left and right rotation and lateral bending of the patient's spine.
The prostheses of Figures 4-7 may be implanted without special tools. One embodiment of the invention, however, includes an installation fixture to assist with the implantation procedure. Figures 8-14 show installation tools used to implant two artificial facet joints, i.e., two cephalad facet joint prostheses and two corresponding caudal facet joint prostheses. The invention also includes installation tools for implanting a single facet joint prosthesis, two caudal facet joint prostheses, two cephalad facet joint prostheses, a caudal and cephalad joint prosthesis, or any other combination of facet joint prostheses.
As shown in Figures 8 and 9, installation fixture 80 has alignment elements 82 to align the cephalad bearing elements 38 and caudal bearing elements 52. In this embodiment, the alignment elements are two dowels for each bearing element. Alignment elements 82 mate with corresponding alignment elements in the bearing elements, such as holes 84 (shown, e.g., in Figure 7B) formed in cephalad bearing elements 38 and caudal bearing elements 52. Other alignment elements may be used, of course, such as pins, grooves, indentations, etc. Attachment elements such as screws 86 attach the bearing elements 38 and 52 to the installation fixture via screw holes 88 (shown, e.g., in Figure 7B) formed in the bearing elements and in installation fixture 80.
When attached to installation fixture 80, cephalad and caudal bearing surfaces 40 and 54 are in contact and in proper alignment with respect to each other, as shown in Figure 8. In one embodiment, the cephalad and caudal bearing surfaces 40 and 54 are preloaded to be in compression when attached to installation fixture 80. To bring the pairs of bearing surfaces in proper alignment with respect to the patient's vertebrae, the spacing between the pairs of bearing surfaces might need to be adjusted. In the embodiment of Figures 8, 9 and 11-14, installation fixture 80 has two bearing support components 90 and 92 that move in a controlled manner with respect to each other. Specifically, in this embodiment a threaded shaft 94 extends between support components 90 and 92. Shaft 94 engages bores formed in support components 90 and 92; one or both of the bores are threaded so that rotation of shaft 94 causes support components 90 and 92 to move towards or away from each other.
Shaft 94 may be provided with a thumbwheel 96 or other actuator for ease of use. One or more guide rods 98 may be provided to maintain the alignment of support components 90 and 92. Other means of moving the cephalad/caudal bearing elements pairs with respect to each other may be used, such as a guided or unguided sliding connection between installation fixture elements.
In use, after preparing the implant site by removal of all or a portion of existing natural cephalad and caudal facet joint portions of the cephalad and caudal vertebrae 60 and 70, respectively, of the spine motion segment, bearing elements 38 and 52 are attached to installation fixture 80 as described above. The spacing between the bearing element pairs is then adjusted using thumbwheel 96 to align the fixation holes 58 of caudal bearing elements 52 with the proper fixation screw insertion sites in the pedicle portions of the caudal vertebra (or other suitable location), thus placing the artificial facet joints in positions corresponding to the position of natural facet joints or in any other position desired by the physician, including positions that do not correspond to the position of natural facet joints. Passages aligning with holes 58 are formed and in the pedicle-or into another part of the caudal vertebra near or adjacent to the pedicle-using a drill, awl, pedicle probe, or other tool known in the surgical arts. Fixation screws 56 are then inserted through holes 58 into the pedicle or other portion of the caudal vertebra to attach the caudal bearing elements as well as the entire prosthesis and installation fixture to the caudal vertebra 70, as shown in Figures 11 and 12. Alternatively, self-tapping screws or other caudal fixation elements may be used, thereby eliminating the need to pre-form the passages.
Thereafter, the cephalad bearing elements are attached to the cephalad vertebra 60. In one embodiment, an insertion path is first determined for each fixation element, then a passage is formed along the insertion path corresponding to cephalad bearing element holes 46 (e. g., in the lamina at the base of the spinous process and through the lamina on the other side, through only one lamina portion, through the spinous process, etc.). Fixation screws 42 can then be inserted through the holes 46 into the passages. Alternatively, self-tapping screws or other caudal fixation elements may be used, thereby eliminating the need to pre-form the passages.
After all four bearing elements have been affixed, the installation fixture 80 may be detached and removed. Installation fixture 80 may be used to implant fewer than four bearing elements, of course.
Figures 10, 13 and 14 show a tool that may be used to define the insertion path (location, orientation, etc.) for the fixation element of the left cephalad bearing element. For example, the tool may be used to guide the formation of a cephalad bearing element attachment passage for the left bearing element. A corresponding mirror image tool may be used for the right cephalad bearing element. In alternative embodiments, a single tool may be used for defining the insertion path for both left and right cephalad bearing elements.
As shown, tool 100 has a handle 102 and an alignment interface (such as dowels 104 in tool 100 and holes 106 in fixture 80) to align the tool in the proper orientation with respect to installation fixture 80 and a cephalad facet joint bearing element. With the caudal and cephalad bearing elements still attached to installation fixture 80 and preferably with caudal bearing elements already affixed to the caudal vertebra 70, tool 100 engages installation fixture through the alignment interface as shown in Figures 13 and 14. In this position, tool 100 may be used to define an insertion path for the cephalad fixation elements.
In the embodiment shown in Figures 10, 13 and 14, the insertion path guide is a drill guide 108 supported by arms 110 and 112 and is aligned with hole 46 in cephalad bearing element 38 by the alignment interface between installation fixture 80 and guide tool 100. In this embodiment, drill guide 108 is a tube, but other guide elements may be used, such as a guide groove or surface. A drill bit 114 may be inserted through drill guide 108 to form an insertion passage, such as a passage through a lamina portion of the cephalad vertebra. A fixation screw may then be inserted through the passage in the cephalad vertebra and into the Morse taper connection of hole 46 (or other type connection, as discussed above) of cephalad bearing element 38. As discussed above, the fixation screw may be coated with a bone ingrowth material. Alternatively, a self-tapping screw may be used, thereby removing the need to pre-form a passage.
A mirror image tool may then be used to define an insertion path or to form a hole for the right cephalad bearing element, which is then affixed to the vertebral body in the same way. The installation fixture is then removed, such as by unscrewing screws 86.
As mentioned above, in alternative embodiments the guide tool may be used to define a path for a self-tapping screw or other fixation element that does not require the use of a drill. In those embodiments, element 108 may be used to define a path for the self-tapping screw or other fixation element. The fixation element path may be through only a single lamina portion, through the spinous process alone, or any other suitable path.
In some embodiments, the entire prosthesis other than the bearing surface may be coated with bone ingrowth material.
The above described embodiments of this invention are merely descriptive of its principles and are not to be limited. The scope of this invention instead shall be determined from the scope of the following claims, including their equivalents.
Claims (44)
1. A prosthesis to replace a cephalad portion of a natural facet joint on a vertebra, the prosthesis comprising:
an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint; and a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted through a lamina portion of a vertebra to affix the artificial facet joint element to the vertebra.
an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint; and a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted through a lamina portion of a vertebra to affix the artificial facet joint element to the vertebra.
2. The prosthesis of claim 1 wherein the fixation element is further adapted and configured to be inserted through the lamina portion of the vertebra to affix the artificial facet joint element to the vertebra without blocking access to a pedicle portion of the vertebra.
3. The prosthesis of claim 1 wherein the lamina portion is a first lamina portion, the fixation element being further adapted and configured to be inserted through a second lamina portion of the vertebra to affix the artificial facet joint element to the vertebra.
4. The prosthesis of claim 3 wherein first and second lamina portions are on opposite sides of a midline of the vertebra, the fixation element being further adapted and configured to traverse the midline to affix the artificial facet joint element to the vertebra.
5. The prosthesis of claim 1 wherein the artificial facet joint element comprises a cephalad bearing surface adapted and configured to be in an anatomically correct position with respect to the vertebra when the prosthesis is affixed to the vertebra by the fixation element.
6. The prosthesis of claim 1 wherein the artificial facet joint element comprises a cephalad bearing surface adapted and configured to be in other than an anatomically correct position with respect to the vertebra when the prosthesis is affixed to the vertebra by the fixation element.
7. The prosthesis of claim 1 further comprising an attachment element adapted and configured to attach the artificial facet joint element to the fixation element.
8. The prosthesis of claim 1 wherein the fixation element comprises an artificial facet joint element attachment end and an insertion tool engagement end, the artificial facet joint attachment end being adapted and configured to lie on one side of the lamina portion and the artificial facet joint attachment end being adapted and configured to lie on another side of the lamina portion.
9. The prosthesis of claim 1 wherein the artificial facet joint element is adapted and configured to be disposed between a caudal facet joint bearing surface and a portion of the vertebra.
10. The prosthesis of claim 1 wherein the artificial facet joint element comprises a cephalad bearing surface having a substantially convex shape.
11. The prosthesis of claim 1 wherein the artificial facet joint element further comprises an installation fixture attachment mechanism.
12. A prosthesis to replace a cephalad portion of a natural facet joint on a vertebra, the prosthesis comprising:
an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint; and a fixation element adapted and configured to affix the artificial facet joint element to the vertebra without blocking access to a pedicle portion of the vertebra.
an artificial facet joint element adapted and configured to replace a cephalad portion of the natural facet joint; and a fixation element adapted and configured to affix the artificial facet joint element to the vertebra without blocking access to a pedicle portion of the vertebra.
13. The prosthesis of claim 12 wherein the artificial facet joint element comprises a cephalad bearing surface adapted and configured to be in an anatomically correct position with respect to the vertebra when the prosthesis is affixed to the vertebra by the fixation element.
14. The prosthesis of claim 12 wherein the artificial facet joint element comprises a cephalad bearing surface adapted and configured to be in other than an anatomically correct position with respect to the vertebra when the prosthesis is affixed to the vertebra by the fixation element.
15. The prosthesis of claim 12 further comprising an attachment element adapted and configured to attach the artificial facet joint element to the fixation element.
16. The prosthesis of claim 12 wherein the fixation element comprises an artificial facet joint element attachment end and an insertion tool engagement end, the artificial facet joint attachment end being adapted and configured to lie on one side of a lamina portion of the vertebra and the artificial facet joint attachment end being adapted and configured to lie on another side of the lamina portion.
17. The prosthesis of claim 12 wherein the artificial facet joint element is adapted and configured to be disposed between a caudal facet joint bearing surface and a portion of the vertebra.
18. The prosthesis of claim 12 wherein the artificial facet joint element comprises a cephalad bearing surface having a substantially convex shape.
19. The prosthesis of claim 12 wherein the artificial facet joint element further comprises an installation fixture attachment mechanism.
20. A prosthesis to replace a caudal portion of a natural facet joint on a vertebra, the prosthesis comprising:
an artificial facet joint element comprising a vertebra contacting surface and a caudal bearing surface, the caudal bearing surface being adapted and configured to replace a caudal portion of a natural facet joint and to be substantially entirely posterior of a contact portion of the vertebra when the vertebra contacting surface contacts the contact portion; and a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted into the vertebra to affix the prosthesis to the vertebra.
an artificial facet joint element comprising a vertebra contacting surface and a caudal bearing surface, the caudal bearing surface being adapted and configured to replace a caudal portion of a natural facet joint and to be substantially entirely posterior of a contact portion of the vertebra when the vertebra contacting surface contacts the contact portion; and a fixation element extending from the artificial facet joint element, the fixation element being adapted and configured to be inserted into the vertebra to affix the prosthesis to the vertebra.
21. The prosthesis of claim 20 wherein the caudal bearing surface is further adapted and configured to be in an anatomically correct position with respect to the vertebra when the prosthesis is affixed to the vertebra by the fixation element.
22. The prosthesis of claim 20 wherein the caudal bearing surface is further adapted and configured to be in an other than anatomically correct position with respect to the vertebra when the prosthesis is affixed to the vertebra by the fixation element.
23. The prosthesis of claim 20 further comprising an attachment element adapted and configured to attach the artificial facet joint element to the fixation element.
24. The prosthesis of claim 20 wherein the caudal bearing surface has a substantially concave shape.
25. The prosthesis of claim 20 wherein the artificial facet joint element further comprises an installation fixture attachment mechanism.
26. A prosthesis to replace a caudal portion and a cephalad portion of a natural facet joint of cephalad and caudal vertebrae, the prosthesis comprising:
an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, the artificial cephalad facet joint element comprising a cephalad bearing surface;
a cephalad fixation element, the cephalad fixation element being adapted and configured to be inserted through a lamina portion of the cephalad vertebra to affix the artificial cephalad facet joint element to the cephalad vertebra;
an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element comprising a caudal bearing surface adapted and configured to mate with the cephalad bearing surface.
an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, the artificial cephalad facet joint element comprising a cephalad bearing surface;
a cephalad fixation element, the cephalad fixation element being adapted and configured to be inserted through a lamina portion of the cephalad vertebra to affix the artificial cephalad facet joint element to the cephalad vertebra;
an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element comprising a caudal bearing surface adapted and configured to mate with the cephalad bearing surface.
27. The prosthesis of claim 26 wherein the cephalad fixation element is further adapted and configured to be inserted through the lamina portion of the vertebra to affix the artificial facet joint element to the vertebra without blocking access to a pedicle portion of the vertebra.
28. The prosthesis of claim 26 wherein the lamina portion is a first lamina portion, the cephalad fixation element being further adapted and configured to be inserted through a second lamina portion of the vertebra to affix the artificial facet joint element to the vertebra.
29. The prosthesis of claim 28 wherein first and second lamina portions are on opposite sides of a midline of the vertebra, the cephalad fixation element being further adapted and configured to traverse the midline to affix the artificial facet joint element to the vertebra.
30. The prosthesis of claim 26 wherein the artificial cephalad facet joint element is adapted and configured to be disposed between the caudal facet joint bearing surface and a portion of the cephalad vertebra.
31. The prosthesis of claim 26 further comprising a caudal fixation element extending from the artificial caudal facet joint element, the caudal fixation element being adapted and configured to be inserted into the caudal vertebra to affix the artificial caudal facet joint element to the caudal vertebra.
32. The prosthesis of claim 26 wherein the cephalad bearing surface and the caudal bearing surface are adapted and configured to be in anatomically correct positions with respect to the cephalad and caudal vertebrae when the prosthesis is affixed to the cephalad and caudal vertebrae, respectively.
33. The prosthesis of claim 26 wherein the cephalad bearing surface and the caudal bearing surface are adapted and configured to be in other than anatomically correct positions with respect to the cephalad and caudal vertebrae when the prosthesis is affixed to the cephalad and caudal vertebrae, respectively.
34. The prosthesis of claim 26 wherein cephalad bearing surface and the caudal bearing surface each has a width along its respective transverse axis, the cephalad bearing surface width being shorter than the caudal bearing surface width.
35. The prosthesis of claim 26 wherein the cephalad bearing surface has a substantially convex shape and the caudal bearing surface has a substantially concave shape.
36. The prosthesis of claim 26 wherein the artificial caudal facet joint element further comprises a vertebra contacting surface, the entire caudal bearing surface being adapted and configured to be posterior of a contact portion of the caudal vertebra when the vertebra contacting surface contacts the contact portion.
37. A prosthesis to replace a caudal portion and a cephalad portion of a natural facet joint of cephalad and caudal vertebrae, the prosthesis comprising:
an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, the artificial cephalad facet joint element comprising a cephalad bearing surface;
a cephalad fixation element adapted and configured to affix the artificial cephalad facet joint element to the cephalad vertebra without blocking access to a pedicle portion of the cephalad vertebra;
and an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element comprising a caudal bearing surface adapted and configured to mate with the cephalad bearing surface.
an artificial cephalad facet joint element adapted and configured to replace a cephalad portion of the natural facet joint, the artificial cephalad facet joint element comprising a cephalad bearing surface;
a cephalad fixation element adapted and configured to affix the artificial cephalad facet joint element to the cephalad vertebra without blocking access to a pedicle portion of the cephalad vertebra;
and an artificial caudal facet joint element adapted and configured to replace a caudal portion of the natural facet joint, the artificial caudal facet joint element comprising a caudal bearing surface adapted and configured to mate with the cephalad bearing surface.
38. The prosthesis of claim 37 wherein the artificial cephalad facet joint surface is adapted and configured to be disposed between the caudal facet joint bearing surface and a portion of the cephalad vertebra.
39. The prosthesis of claim 37 further comprising a caudal fixation element extending from the artificial caudal facet joint element, the caudal fixation element being adapted and configured to be inserted into the caudal vertebra to affix the artificial caudal facet joint element to the caudal vertebra.
40. The prosthesis of claim 37 wherein the cephalad bearing surface and the caudal bearing surface are adapted and configured to be in anatomically correct positions with respect to the cephalad and caudal vertebrae when the prosthesis is affixed to the cephalad and caudal vertebrae, respectively.
41. The prosthesis of claim 37 wherein the cephalad bearing surface and the caudal bearing surface are adapted and configured to be in other than anatomically correct positions with respect to the cephalad and caudal vertebrae when the prosthesis is affixed to the cephalad and caudal vertebrae, respectively.
42. The prosthesis of claim 37 wherein the cephalad bearing surface and the caudal bearing surface each has a width along its respective transverse axis, the cephalad bearing surface width being shorter than the caudal bearing surface width.
43. The prosthesis of claim 37 wherein the cephalad bearing surface has a substantially convex shape and the caudal bearing surface has a substantially concave shape.
44. The prosthesis of claim 37 wherein the artificial caudal facet joint element further comprises a vertebra contacting surface, the entire caudal bearing surface being adapted and configured to be posterior of a contact portion of the caudal vertebra when the vertebra contacting surface contacts the contact portion.
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PCT/US2004/011113 WO2004103227A1 (en) | 2003-05-14 | 2004-04-12 | Prostheses and tools for replacement of natural facet joints with artificial facet joint surfaces |
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CA002524022A Abandoned CA2524022A1 (en) | 2003-05-14 | 2004-04-12 | Prostheses and tools for replacement of natural facet joints with artificial facet joint surfaces |
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Families Citing this family (150)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6068630A (en) | 1997-01-02 | 2000-05-30 | St. Francis Medical Technologies, Inc. | Spine distraction implant |
US7959652B2 (en) | 2005-04-18 | 2011-06-14 | Kyphon Sarl | Interspinous process implant having deployable wings and method of implantation |
US7306628B2 (en) | 2002-10-29 | 2007-12-11 | St. Francis Medical Technologies | Interspinous process apparatus and method with a selectably expandable spacer |
US7691145B2 (en) | 1999-10-22 | 2010-04-06 | Facet Solutions, Inc. | Prostheses, systems and methods for replacement of natural facet joints with artificial facet joint surfaces |
DE60037462T2 (en) | 1999-10-22 | 2008-04-17 | Archus Orthopedics Inc., Redmond | Facettenarthroplastiegeräte |
US7674293B2 (en) | 2004-04-22 | 2010-03-09 | Facet Solutions, Inc. | Crossbar spinal prosthesis having a modular design and related implantation methods |
US8187303B2 (en) | 2004-04-22 | 2012-05-29 | Gmedelaware 2 Llc | Anti-rotation fixation element for spinal prostheses |
US20050080486A1 (en) | 2000-11-29 | 2005-04-14 | Fallin T. Wade | Facet joint replacement |
US6579319B2 (en) * | 2000-11-29 | 2003-06-17 | Medicinelodge, Inc. | Facet joint replacement |
WO2002065954A1 (en) | 2001-02-16 | 2002-08-29 | Queen's University At Kingston | Method and device for treating scoliosis |
US7090698B2 (en) | 2001-03-02 | 2006-08-15 | Facet Solutions | Method and apparatus for spine joint replacement |
US7549999B2 (en) | 2003-05-22 | 2009-06-23 | Kyphon Sarl | Interspinous process distraction implant and method of implantation |
US7909853B2 (en) | 2004-09-23 | 2011-03-22 | Kyphon Sarl | Interspinous process implant including a binder and method of implantation |
US7833246B2 (en) | 2002-10-29 | 2010-11-16 | Kyphon SÀRL | Interspinous process and sacrum implant and method |
US7749252B2 (en) | 2005-03-21 | 2010-07-06 | Kyphon Sarl | Interspinous process implant having deployable wing and method of implantation |
US8070778B2 (en) | 2003-05-22 | 2011-12-06 | Kyphon Sarl | Interspinous process implant with slide-in distraction piece and method of implantation |
US8048117B2 (en) | 2003-05-22 | 2011-11-01 | Kyphon Sarl | Interspinous process implant and method of implantation |
US20040230304A1 (en) | 2003-05-14 | 2004-11-18 | Archus Orthopedics Inc. | Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces |
US7608104B2 (en) | 2003-05-14 | 2009-10-27 | Archus Orthopedics, Inc. | Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces |
US7074238B2 (en) | 2003-07-08 | 2006-07-11 | Archus Orthopedics, Inc. | Prostheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces |
US7377942B2 (en) * | 2003-08-06 | 2008-05-27 | Warsaw Orthopedic, Inc. | Posterior elements motion restoring device |
US9254137B2 (en) | 2003-08-29 | 2016-02-09 | Lanterna Medical Technologies Ltd | Facet implant |
US7753937B2 (en) | 2003-12-10 | 2010-07-13 | Facet Solutions Inc. | Linked bilateral spinal facet implants and methods of use |
US20050131406A1 (en) | 2003-12-15 | 2005-06-16 | Archus Orthopedics, Inc. | Polyaxial adjustment of facet joint prostheses |
US20050159746A1 (en) * | 2004-01-21 | 2005-07-21 | Dieter Grob | Cervical facet resurfacing implant |
US7846183B2 (en) | 2004-02-06 | 2010-12-07 | Spinal Elements, Inc. | Vertebral facet joint prosthesis and method of fixation |
US8353933B2 (en) * | 2007-04-17 | 2013-01-15 | Gmedelaware 2 Llc | Facet joint replacement |
US7993373B2 (en) | 2005-02-22 | 2011-08-09 | Hoy Robert W | Polyaxial orthopedic fastening apparatus |
US8998952B2 (en) * | 2004-02-17 | 2015-04-07 | Globus Medical, Inc. | Facet joint replacement instruments and methods |
US8562649B2 (en) | 2004-02-17 | 2013-10-22 | Gmedelaware 2 Llc | System and method for multiple level facet joint arthroplasty and fusion |
WO2005079711A1 (en) * | 2004-02-18 | 2005-09-01 | Boehm Frank H Jr | Facet joint prosthesis and method of replacing a facet joint |
US7406775B2 (en) | 2004-04-22 | 2008-08-05 | Archus Orthopedics, Inc. | Implantable orthopedic device component selection instrument and methods |
US7051451B2 (en) * | 2004-04-22 | 2006-05-30 | Archus Orthopedics, Inc. | Facet joint prosthesis measurement and implant tools |
US7338527B2 (en) * | 2004-05-11 | 2008-03-04 | Geoffrey Blatt | Artificial spinal disc, insertion tool, and method of insertion |
US20050277921A1 (en) * | 2004-05-28 | 2005-12-15 | Sdgi Holdings, Inc. | Prosthetic joint and nucleus supplement |
US7588578B2 (en) | 2004-06-02 | 2009-09-15 | Facet Solutions, Inc | Surgical measurement systems and methods |
US8764801B2 (en) * | 2005-03-28 | 2014-07-01 | Gmedelaware 2 Llc | Facet joint implant crosslinking apparatus and method |
US9504583B2 (en) | 2004-06-10 | 2016-11-29 | Spinal Elements, Inc. | Implant and method for facet immobilization |
US7708765B2 (en) | 2004-08-03 | 2010-05-04 | K Spine, Inc. | Spine stabilization device and method |
US8114158B2 (en) | 2004-08-03 | 2012-02-14 | Kspine, Inc. | Facet device and method |
JP2008510518A (en) | 2004-08-18 | 2008-04-10 | アーカス・オーソペディクス・インコーポレーテッド | Adjoint level articulating device, spinal stabilization system and method |
US8012209B2 (en) | 2004-09-23 | 2011-09-06 | Kyphon Sarl | Interspinous process implant including a binder, binder aligner and method of implantation |
US7935134B2 (en) | 2004-10-20 | 2011-05-03 | Exactech, Inc. | Systems and methods for stabilization of bone structures |
US8267969B2 (en) | 2004-10-20 | 2012-09-18 | Exactech, Inc. | Screw systems and methods for use in stabilization of bone structures |
US8162985B2 (en) | 2004-10-20 | 2012-04-24 | The Board Of Trustees Of The Leland Stanford Junior University | Systems and methods for posterior dynamic stabilization of the spine |
US8226690B2 (en) | 2005-07-22 | 2012-07-24 | The Board Of Trustees Of The Leland Stanford Junior University | Systems and methods for stabilization of bone structures |
US8025680B2 (en) | 2004-10-20 | 2011-09-27 | Exactech, Inc. | Systems and methods for posterior dynamic stabilization of the spine |
EP1809214B1 (en) | 2004-10-25 | 2017-07-12 | Gmedelaware 2 LLC | Spinal prothesis having a modular design |
US8021392B2 (en) | 2004-11-22 | 2011-09-20 | Minsurg International, Inc. | Methods and surgical kits for minimally-invasive facet joint fusion |
US20060111779A1 (en) * | 2004-11-22 | 2006-05-25 | Orthopedic Development Corporation, A Florida Corporation | Minimally invasive facet joint fusion |
US8118838B2 (en) | 2004-12-13 | 2012-02-21 | Kyphon Sarl | Inter-cervical facet implant with multiple direction articulation joint and method for implanting |
US20060247633A1 (en) | 2004-12-13 | 2006-11-02 | St. Francis Medical Technologies, Inc. | Inter-cervical facet implant with surface enhancements |
US7776090B2 (en) | 2004-12-13 | 2010-08-17 | Warsaw Orthopedic, Inc. | Inter-cervical facet implant and method |
US20060247650A1 (en) | 2004-12-13 | 2006-11-02 | St. Francis Medical Technologies, Inc. | Inter-cervical facet joint fusion implant |
US8066749B2 (en) | 2004-12-13 | 2011-11-29 | Warsaw Orthopedic, Inc. | Implant for stabilizing a bone graft during spinal fusion |
US8029540B2 (en) | 2005-05-10 | 2011-10-04 | Kyphon Sarl | Inter-cervical facet implant with implantation tool |
US7763050B2 (en) | 2004-12-13 | 2010-07-27 | Warsaw Orthopedic, Inc. | Inter-cervical facet implant with locking screw and method |
US20060200156A1 (en) * | 2005-01-05 | 2006-09-07 | Jamal Taha | Spinal docking system, spinal docking device, and methods of spinal stabilization |
US20060190081A1 (en) * | 2005-02-09 | 2006-08-24 | Gary Kraus | Facet stabilization schemes |
US7722647B1 (en) | 2005-03-14 | 2010-05-25 | Facet Solutions, Inc. | Apparatus and method for posterior vertebral stabilization |
US8496686B2 (en) | 2005-03-22 | 2013-07-30 | Gmedelaware 2 Llc | Minimally invasive spine restoration systems, devices, methods and kits |
AU2006227019A1 (en) | 2005-03-22 | 2006-09-28 | Fsi Acquisition Sub, Llc | Minimally invasive spine restoration systems, devices, methods and kits |
US20060247769A1 (en) * | 2005-04-28 | 2006-11-02 | Sdgi Holdings, Inc. | Polycrystalline diamond compact surfaces on facet arthroplasty devices |
JP4613867B2 (en) * | 2005-05-26 | 2011-01-19 | ソニー株式会社 | Content processing apparatus, content processing method, and computer program |
US8523865B2 (en) | 2005-07-22 | 2013-09-03 | Exactech, Inc. | Tissue splitter |
DE202005019487U1 (en) | 2005-12-13 | 2007-04-26 | Deru Gmbh | Facet joint prosthesis |
WO2007126428A2 (en) | 2005-12-20 | 2007-11-08 | Archus Orthopedics, Inc. | Arthroplasty revision system and method |
WO2008019397A2 (en) | 2006-08-11 | 2008-02-14 | Archus Orthopedics, Inc. | Angled washer polyaxial connection for dynamic spine prosthesis |
US8096996B2 (en) | 2007-03-20 | 2012-01-17 | Exactech, Inc. | Rod reducer |
JP2010515543A (en) | 2007-01-10 | 2010-05-13 | ファセット ソリューションズ インコーポレイテッド | Taper lock fixing system |
US8652137B2 (en) | 2007-02-22 | 2014-02-18 | Spinal Elements, Inc. | Vertebral facet joint drill and method of use |
US8992533B2 (en) | 2007-02-22 | 2015-03-31 | Spinal Elements, Inc. | Vertebral facet joint drill and method of use |
US8114134B2 (en) | 2007-06-05 | 2012-02-14 | Spartek Medical, Inc. | Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine |
US8048121B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Spine implant with a defelction rod system anchored to a bone anchor and method |
US8092501B2 (en) | 2007-06-05 | 2012-01-10 | Spartek Medical, Inc. | Dynamic spinal rod and method for dynamic stabilization of the spine |
US8048115B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Surgical tool and method for implantation of a dynamic bone anchor |
US8083772B2 (en) | 2007-06-05 | 2011-12-27 | Spartek Medical, Inc. | Dynamic spinal rod assembly and method for dynamic stabilization of the spine |
US8021396B2 (en) | 2007-06-05 | 2011-09-20 | Spartek Medical, Inc. | Configurable dynamic spinal rod and method for dynamic stabilization of the spine |
US7635380B2 (en) | 2007-06-05 | 2009-12-22 | Spartek Medical, Inc. | Bone anchor with a compressor element for receiving a rod for a dynamic stabilization and motion preservation spinal implantation system and method |
JP2010528779A (en) | 2007-06-06 | 2010-08-26 | ケイ スパイン インコーポレイテッド | Medical device and method for correcting deformation |
US10758283B2 (en) | 2016-08-11 | 2020-09-01 | Mighty Oak Medical, Inc. | Fixation devices having fenestrations and methods for using the same |
EP2923664B1 (en) | 2007-10-17 | 2019-01-02 | ARO Medical ApS | Systems and apparatuses for torsional stabilisation |
US8109971B2 (en) * | 2007-10-29 | 2012-02-07 | Horace Winston Hale | Orthopedic fixation mechanism |
DE102007051782B4 (en) | 2007-10-30 | 2017-02-02 | Aesculap Ag | Implant for replacing a facet joint surface |
US8083775B2 (en) * | 2008-02-26 | 2011-12-27 | Spartek Medical, Inc. | Load-sharing bone anchor having a natural center of rotation and method for dynamic stabilization of the spine |
US8211155B2 (en) | 2008-02-26 | 2012-07-03 | Spartek Medical, Inc. | Load-sharing bone anchor having a durable compliant member and method for dynamic stabilization of the spine |
US8057515B2 (en) | 2008-02-26 | 2011-11-15 | Spartek Medical, Inc. | Load-sharing anchor having a deflectable post and centering spring and method for dynamic stabilization of the spine |
US8337536B2 (en) | 2008-02-26 | 2012-12-25 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine |
US8097024B2 (en) | 2008-02-26 | 2012-01-17 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for stabilization of the spine |
US8016861B2 (en) | 2008-02-26 | 2011-09-13 | Spartek Medical, Inc. | Versatile polyaxial connector assembly and method for dynamic stabilization of the spine |
US8267979B2 (en) | 2008-02-26 | 2012-09-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and axial spring and method for dynamic stabilization of the spine |
US8007518B2 (en) | 2008-02-26 | 2011-08-30 | Spartek Medical, Inc. | Load-sharing component having a deflectable post and method for dynamic stabilization of the spine |
US8333792B2 (en) | 2008-02-26 | 2012-12-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine |
CN101959468B (en) | 2008-03-06 | 2012-09-05 | 斯恩蒂斯有限公司 | Facet interference screw |
US8828058B2 (en) | 2008-11-11 | 2014-09-09 | Kspine, Inc. | Growth directed vertebral fixation system with distractible connector(s) and apical control |
EP3207901B1 (en) * | 2009-02-25 | 2022-06-22 | Spinewelding AG | Spine stabilization device |
US8357183B2 (en) | 2009-03-26 | 2013-01-22 | Kspine, Inc. | Semi-constrained anchoring system |
US9168071B2 (en) | 2009-09-15 | 2015-10-27 | K2M, Inc. | Growth modulation system |
US9078701B2 (en) * | 2009-11-09 | 2015-07-14 | Centinel Spine, Inc. | System and method for stabilizing a posterior fusion over motion segments |
CN102695465A (en) | 2009-12-02 | 2012-09-26 | 斯帕泰克医疗股份有限公司 | Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod |
US20110307018A1 (en) | 2010-06-10 | 2011-12-15 | Spartek Medical, Inc. | Adaptive spinal rod and methods for stabilization of the spine |
US8870889B2 (en) | 2010-06-29 | 2014-10-28 | George Frey | Patient matching surgical guide and method for using the same |
US11376073B2 (en) | 2010-06-29 | 2022-07-05 | Mighty Oak Medical Inc. | Patient-matched apparatus and methods for performing surgical procedures |
WO2017066518A1 (en) | 2010-06-29 | 2017-04-20 | Mighty Oak Medical, Inc. | Patient-matched apparatus and methods for performing surgical procedures |
US11806197B2 (en) | 2010-06-29 | 2023-11-07 | Mighty Oak Medical, Inc. | Patient-matched apparatus for use in spine related surgical procedures and methods for using the same |
US9642633B2 (en) | 2010-06-29 | 2017-05-09 | Mighty Oak Medical, Inc. | Patient-matched apparatus and methods for performing surgical procedures |
US11039889B2 (en) | 2010-06-29 | 2021-06-22 | Mighty Oak Medical, Inc. | Patient-matched apparatus and methods for performing surgical procedures |
WO2012006627A1 (en) | 2010-07-09 | 2012-01-12 | Synthes Usa, Llc | Facet fusion implant |
US8425611B2 (en) | 2010-10-26 | 2013-04-23 | Warsaw Orthopedic, Inc. | Expandable orthopedic implant system and method |
US8740949B2 (en) | 2011-02-24 | 2014-06-03 | Spinal Elements, Inc. | Methods and apparatus for stabilizing bone |
US9271765B2 (en) | 2011-02-24 | 2016-03-01 | Spinal Elements, Inc. | Vertebral facet joint fusion implant and method for fusion |
USD724733S1 (en) | 2011-02-24 | 2015-03-17 | Spinal Elements, Inc. | Interbody bone implant |
ITPI20110040A1 (en) * | 2011-04-08 | 2012-10-09 | Univ Pisa | DRILLING MASK FOR PLANTING A TRANSPEDUNCULAR SCREW |
JP6158176B2 (en) | 2011-06-03 | 2017-07-05 | ケイツーエム インコーポレイテッドK2M,Inc. | Spine correction system |
USD738498S1 (en) | 2013-12-16 | 2015-09-08 | George Frey | Sacroiliac surgical guide |
USD775335S1 (en) | 2011-06-29 | 2016-12-27 | Mighty Oak Medical, Inc. | Multi-level surgical guide |
USD745672S1 (en) | 2012-09-18 | 2015-12-15 | George Frey | Thoracic surgical guide |
USD739935S1 (en) | 2011-10-26 | 2015-09-29 | Spinal Elements, Inc. | Interbody bone implant |
US9468469B2 (en) | 2011-11-16 | 2016-10-18 | K2M, Inc. | Transverse coupler adjuster spinal correction systems and methods |
US8920472B2 (en) | 2011-11-16 | 2014-12-30 | Kspine, Inc. | Spinal correction and secondary stabilization |
WO2014172632A2 (en) | 2011-11-16 | 2014-10-23 | Kspine, Inc. | Spinal correction and secondary stabilization |
US9468468B2 (en) | 2011-11-16 | 2016-10-18 | K2M, Inc. | Transverse connector for spinal stabilization system |
US9451987B2 (en) | 2011-11-16 | 2016-09-27 | K2M, Inc. | System and method for spinal correction |
US8430916B1 (en) | 2012-02-07 | 2013-04-30 | Spartek Medical, Inc. | Spinal rod connectors, methods of use, and spinal prosthesis incorporating spinal rod connectors |
US9138325B2 (en) * | 2012-07-11 | 2015-09-22 | Globus Medical, Inc. | Lamina implant and method |
USD745671S1 (en) | 2012-09-18 | 2015-12-15 | George Frey | Transitional surgical guide |
USD745673S1 (en) | 2012-09-18 | 2015-12-15 | George Frey | Lumbar surgical guide |
US9421044B2 (en) | 2013-03-14 | 2016-08-23 | Spinal Elements, Inc. | Apparatus for bone stabilization and distraction and methods of use |
USD765853S1 (en) | 2013-03-14 | 2016-09-06 | Spinal Elements, Inc. | Flexible elongate member with a portion configured to receive a bone anchor |
US9820784B2 (en) | 2013-03-14 | 2017-11-21 | Spinal Elements, Inc. | Apparatus for spinal fixation and methods of use |
US9730737B2 (en) * | 2013-03-14 | 2017-08-15 | Atlas Spine, Inc. | Facet fixation with anchor wire |
CA2914005C (en) | 2013-06-07 | 2018-01-09 | George Frey | Patient-matched apparatus and methods for performing surgical procedures |
US9468471B2 (en) | 2013-09-17 | 2016-10-18 | K2M, Inc. | Transverse coupler adjuster spinal correction systems and methods |
US9456855B2 (en) | 2013-09-27 | 2016-10-04 | Spinal Elements, Inc. | Method of placing an implant between bone portions |
US9839450B2 (en) | 2013-09-27 | 2017-12-12 | Spinal Elements, Inc. | Device and method for reinforcement of a facet |
WO2016044432A1 (en) | 2014-09-17 | 2016-03-24 | Spinal Elements, Inc. | Flexible fastening band connector |
JP2018502693A (en) | 2015-01-27 | 2018-02-01 | スパイナル・エレメンツ・インコーポレーテッド | Facet joint implant |
US9839451B2 (en) | 2016-03-29 | 2017-12-12 | Christopher D. Sturm | Facet joint replacement device and methods of use |
US10743890B2 (en) | 2016-08-11 | 2020-08-18 | Mighty Oak Medical, Inc. | Drill apparatus and surgical fixation devices and methods for using the same |
WO2018035175A1 (en) | 2016-08-15 | 2018-02-22 | In Queue Innovations, Llc | Bone fusion device, system and methods |
CN106725788A (en) * | 2016-12-27 | 2017-05-31 | 中国人民解放军第二军医大学第二附属医院 | A kind of wing plate with curved surface internal fixation system for spondylolysis and spondylolithesis of the lumbar spine |
USD857893S1 (en) | 2017-10-26 | 2019-08-27 | Mighty Oak Medical, Inc. | Cortical surgical guide |
USD858765S1 (en) | 2017-10-26 | 2019-09-03 | Mighty Oak Medical, Inc. | Cortical surgical guide |
USD895111S1 (en) | 2018-06-04 | 2020-09-01 | Mighty Oak Medical, Inc. | Sacro-iliac guide |
USD948717S1 (en) | 2018-06-04 | 2022-04-12 | Mighty Oak Medical, Inc. | Sacro-iliac guide |
JP2022525294A (en) | 2019-03-26 | 2022-05-12 | マイティ オーク メディカル、インコーポレイテッド | Patient-adaptive equipment for use in augmented reality-assisted surgery and methods for using it |
US11464552B2 (en) | 2019-05-22 | 2022-10-11 | Spinal Elements, Inc. | Bone tie and bone tie inserter |
US11457959B2 (en) | 2019-05-22 | 2022-10-04 | Spinal Elements, Inc. | Bone tie and bone tie inserter |
US11304733B2 (en) | 2020-02-14 | 2022-04-19 | Spinal Elements, Inc. | Bone tie methods |
USD992114S1 (en) | 2021-08-12 | 2023-07-11 | Mighty Oak Medical, Inc. | Surgical guide |
Family Cites Families (345)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1308451A (en) | 1917-06-08 | 1919-07-01 | Slocum Avram & Slocum Lab | Sine-bar. |
US2502902A (en) * | 1946-01-25 | 1950-04-04 | Benjamin F Tofflemire | Intraoral fracture and orthodontic appliance |
US2930133A (en) * | 1957-07-08 | 1960-03-29 | Thompson Joseph Clay | Apparatus to aid in determining abnormal positions of spinal vertebrae |
US2959861A (en) | 1958-04-17 | 1960-11-15 | Martin G Stromquist | Bevel protractor |
US3596656A (en) | 1969-01-21 | 1971-08-03 | Bernd B Kaute | Fracture fixation device |
US3726279A (en) * | 1970-10-08 | 1973-04-10 | Carolina Medical Electronics I | Hemostatic vascular cuff |
US3710789A (en) * | 1970-12-04 | 1973-01-16 | Univ Minnesota | Method of repairing bone fractures with expanded metal |
CA992255A (en) * | 1971-01-25 | 1976-07-06 | Cutter Laboratories | Prosthesis for spinal repair |
US3875595A (en) * | 1974-04-15 | 1975-04-08 | Edward C Froning | Intervertebral disc prosthesis and instruments for locating same |
US3941127A (en) * | 1974-10-03 | 1976-03-02 | Froning Edward C | Apparatus and method for stereotaxic lateral extradural disc puncture |
PL105977B1 (en) | 1976-06-28 | 1979-11-30 | Wyzsza Szkola Inzynierska | APPARATUS FOR CORRECTING SPINE CURVES |
US4040130A (en) | 1976-10-12 | 1977-08-09 | Laure Prosthetics, Inc. | Wrist joint prosthesis |
US4156296A (en) * | 1977-04-08 | 1979-05-29 | Bio-Dynamics, Inc. | Great (large) toe prosthesis and method of implanting |
US4123848A (en) | 1977-05-31 | 1978-11-07 | Fansteel Inc. | Block profile gauge |
US4210317A (en) | 1979-05-01 | 1980-07-01 | Dorothy Sherry | Apparatus for supporting and positioning the arm and shoulder |
US4231121A (en) | 1979-07-05 | 1980-11-04 | Wright Dow Corning | Metacarpal-phalangeal prosthesis |
CA1146301A (en) | 1980-06-13 | 1983-05-17 | J. David Kuntz | Intervertebral disc prosthesis |
US4394370A (en) | 1981-09-21 | 1983-07-19 | Jefferies Steven R | Bone graft material for osseous defects and method of making same |
US4472840A (en) | 1981-09-21 | 1984-09-25 | Jefferies Steven R | Method of inducing osseous formation by implanting bone graft material |
US4502161A (en) * | 1981-09-21 | 1985-03-05 | Wall W H | Prosthetic meniscus for the repair of joints |
JPS5910807A (en) | 1981-10-30 | 1984-01-20 | Hisao Ando | Simple seismometer in common use as electroacoustic level |
DE3405518A1 (en) * | 1983-02-25 | 1984-08-30 | Smiths Industries Public Ltd. Co., London | GYROSCOPE |
US4693722A (en) | 1983-08-19 | 1987-09-15 | Wall William H | Prosthetic temporomanibular condyle utilizing a prosthetic meniscus |
US4554914A (en) | 1983-10-04 | 1985-11-26 | Kapp John P | Prosthetic vertebral body |
FR2553993B1 (en) | 1983-10-28 | 1986-02-07 | Peze William | METHOD AND APPARATUS FOR DYNAMIC CORRECTION OF SPINAL DEFORMATIONS |
US4611581A (en) | 1983-12-16 | 1986-09-16 | Acromed Corporation | Apparatus for straightening spinal columns |
US4778472A (en) | 1985-04-30 | 1988-10-18 | Vitek, Inc. | Implant for reconstruction of temporomanibular joint |
US4795469A (en) * | 1986-07-23 | 1989-01-03 | Indong Oh | Threaded acetabular cup and method |
US4710075A (en) | 1986-10-01 | 1987-12-01 | Boehringer Mannheim Corporation | Adjustable drill gauge |
US4805602A (en) * | 1986-11-03 | 1989-02-21 | Danninger Medical Technology | Transpedicular screw and rod system |
US5019081A (en) * | 1986-12-10 | 1991-05-28 | Watanabe Robert S | Laminectomy surgical process |
JP2557359B2 (en) * | 1986-12-26 | 1996-11-27 | 株式会社東芝 | Information processing device |
CA1283501C (en) | 1987-02-12 | 1991-04-30 | Thomas P. Hedman | Artificial spinal disc |
DE3711091A1 (en) | 1987-04-02 | 1988-10-13 | Kluger Patrick | DEVICE FOR SETTING UP A SPINE WITH A DAMAGED SPINE |
US4863477A (en) | 1987-05-12 | 1989-09-05 | Monson Gary L | Synthetic intervertebral disc prosthesis |
US4772287A (en) * | 1987-08-20 | 1988-09-20 | Cedar Surgical, Inc. | Prosthetic disc and method of implanting |
US5147404A (en) | 1987-12-07 | 1992-09-15 | Downey Ernest L | Vertebra prosthesis |
US4911718A (en) * | 1988-06-10 | 1990-03-27 | University Of Medicine & Dentistry Of N.J. | Functional and biocompatible intervertebral disc spacer |
US5545229A (en) | 1988-08-18 | 1996-08-13 | University Of Medicine And Dentistry Of Nj | Functional and biocompatible intervertebral disc spacer containing elastomeric material of varying hardness |
US4917701A (en) * | 1988-09-12 | 1990-04-17 | Morgan Douglas H | Temporomandibular joint prostheses |
DE3831657A1 (en) * | 1988-09-17 | 1990-03-22 | Boehringer Ingelheim Kg | DEVICE FOR THE OSTEOSYNTHESIS AND METHOD FOR THE PRODUCTION THEREOF |
US4950270A (en) | 1989-02-03 | 1990-08-21 | Boehringer Mannheim Corporation | Cannulated self-tapping bone screw |
USRE36221E (en) | 1989-02-03 | 1999-06-01 | Breard; Francis Henri | Flexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column |
FR2642645B1 (en) * | 1989-02-03 | 1992-08-14 | Breard Francis | FLEXIBLE INTERVERTEBRAL STABILIZER AND METHOD AND APPARATUS FOR CONTROLLING ITS VOLTAGE BEFORE PLACEMENT ON THE RACHIS |
CA1318469C (en) | 1989-02-15 | 1993-06-01 | Acromed Corporation | Artificial disc |
US4955916A (en) | 1989-05-01 | 1990-09-11 | Techmedica, Inc. | Thumb joint prosthesis |
US5062845A (en) | 1989-05-10 | 1991-11-05 | Spine-Tech, Inc. | Method of making an intervertebral reamer |
CA2007210C (en) | 1989-05-10 | 1996-07-09 | Stephen D. Kuslich | Intervertebral reamer |
US5000165A (en) * | 1989-05-15 | 1991-03-19 | Watanabe Robert S | Lumbar spine rod fixation system |
US5290558A (en) * | 1989-09-21 | 1994-03-01 | Osteotech, Inc. | Flowable demineralized bone powder composition and its use in bone repair |
US4932975A (en) | 1989-10-16 | 1990-06-12 | Vanderbilt University | Vertebral prosthesis |
DE8912648U1 (en) * | 1989-10-23 | 1990-11-22 | Mecron Medizinische Produkte Gmbh, 1000 Berlin, De | |
US5236456A (en) * | 1989-11-09 | 1993-08-17 | Osteotech, Inc. | Osteogenic composition and implant containing same |
US5105255A (en) * | 1990-01-10 | 1992-04-14 | Hughes Aircraft Company | MMIC die attach design for manufacturability |
EP0470256A1 (en) * | 1990-02-26 | 1992-02-12 | Takeda Chemical Industries, Ltd. | Peptide derivatives and production thereof |
US4987904A (en) * | 1990-03-22 | 1991-01-29 | Wilson James T | Method and apparatus for bone size gauging |
EP0453393B1 (en) | 1990-04-20 | 1993-10-06 | SULZER Medizinaltechnik AG | Implant, particularly intervertebral prosthesis |
US5360431A (en) | 1990-04-26 | 1994-11-01 | Cross Medical Products | Transpedicular screw system and method of use |
US5070623A (en) | 1990-05-02 | 1991-12-10 | Zimmer, Inc. | Prosthetic gauge |
US5129900B1 (en) | 1990-07-24 | 1998-12-29 | Acromed Corp | Spinal column retaining method and apparatus |
US5385567A (en) * | 1990-09-07 | 1995-01-31 | Goble; E. Marlowe | Sight barrel arthroscopic instrument |
US5300073A (en) * | 1990-10-05 | 1994-04-05 | Salut, Ltd. | Sacral implant system |
US5098434A (en) * | 1990-11-28 | 1992-03-24 | Boehringer Mannheim Corporation | Porous coated bone screw |
US5047055A (en) | 1990-12-21 | 1991-09-10 | Pfizer Hospital Products Group, Inc. | Hydrogel intervertebral disc nucleus |
US5192326A (en) * | 1990-12-21 | 1993-03-09 | Pfizer Hospital Products Group, Inc. | Hydrogel bead intervertebral disc nucleus |
JP3007903B2 (en) | 1991-03-29 | 2000-02-14 | 京セラ株式会社 | Artificial disc |
US5577995A (en) | 1991-06-13 | 1996-11-26 | Grace L. Walker | Spinal and soft tissue mobilizer |
WO1993000053A1 (en) | 1991-06-25 | 1993-01-07 | Orthopaedic Biosystems Limited | Non-constrained total joint system |
US5603713A (en) * | 1991-09-24 | 1997-02-18 | Aust; Gilbert M. | Anterior lumbar/cervical bicortical compression plate |
FR2681520B1 (en) | 1991-09-24 | 1993-12-24 | Henry Graf | DEVICE FOR MEASURING THE AMPLITUDES OF TWO VERTEBRES IN THREE ORTHOGONAL PLANS. |
GR1002517B (en) | 1991-09-30 | 1997-01-23 | Johnson & Johnson Orthopaedics Inc. | Hip prosthesis. |
US5360448A (en) | 1991-10-07 | 1994-11-01 | Thramann Jeffrey J | Porous-coated bone screw for securing prosthesis |
CH682860A5 (en) | 1991-12-13 | 1993-11-30 | Zellweger Uster Ag | Transducers Static electricity meters. |
US5425773A (en) | 1992-01-06 | 1995-06-20 | Danek Medical, Inc. | Intervertebral disk arthroplasty device |
US5258031A (en) | 1992-01-06 | 1993-11-02 | Danek Medical | Intervertebral disk arthroplasty |
US5314476A (en) * | 1992-02-04 | 1994-05-24 | Osteotech, Inc. | Demineralized bone particles and flowable osteogenic composition containing same |
US5261910A (en) | 1992-02-19 | 1993-11-16 | Acromed Corporation | Apparatus for maintaining spinal elements in a desired spatial relationship |
DE4208115A1 (en) | 1992-03-13 | 1993-09-16 | Link Waldemar Gmbh Co | DISC ENDOPROTHESIS |
DE4208116C2 (en) * | 1992-03-13 | 1995-08-03 | Link Waldemar Gmbh Co | Intervertebral disc prosthesis |
EP0566810B1 (en) | 1992-04-21 | 1996-08-14 | SULZER Medizinaltechnik AG | Artificial spinal disc |
US5306309A (en) | 1992-05-04 | 1994-04-26 | Calcitek, Inc. | Spinal disk implant and implantation kit |
US5314492A (en) | 1992-05-11 | 1994-05-24 | Johnson & Johnson Orthopaedics, Inc. | Composite prosthesis |
US5312409A (en) * | 1992-06-01 | 1994-05-17 | Mclaughlin Robert E | Drill alignment guide |
DE59208301D1 (en) * | 1992-06-25 | 1997-05-07 | Synthes Ag | OSTEOSYNTHETIC FIXATION DEVICE |
US5545165A (en) * | 1992-10-09 | 1996-08-13 | Biedermann Motech Gmbh | Anchoring member |
US5348026A (en) | 1992-09-29 | 1994-09-20 | Smith & Nephew Richards Inc. | Osteoinductive bone screw |
US5334203A (en) | 1992-09-30 | 1994-08-02 | Amei Technologies Inc. | Spinal fixation system and methods |
CA2149221C (en) | 1992-11-12 | 2005-02-08 | Neville Alleyne | Cardiac protection device |
US5611354A (en) * | 1992-11-12 | 1997-03-18 | Alleyne; Neville | Cardiac protection device |
US5303480A (en) * | 1992-11-27 | 1994-04-19 | Chek Paul W | Cranio-cervical sagittal-alignment caliper and universal measurement system |
US5947965A (en) | 1992-12-31 | 1999-09-07 | Bryan; Donald W. | Spinal fixation apparatus and method |
US5496318A (en) * | 1993-01-08 | 1996-03-05 | Advanced Spine Fixation Systems, Inc. | Interspinous segmental spine fixation device |
US5676701A (en) | 1993-01-14 | 1997-10-14 | Smith & Nephew, Inc. | Low wear artificial spinal disc |
US5350380A (en) | 1993-01-15 | 1994-09-27 | Depuy Inc. | Method for securing a ligament replacement in a bone |
US5961555A (en) * | 1998-03-17 | 1999-10-05 | Huebner; Randall J. | Modular shoulder prosthesis |
DE69428143T2 (en) | 1993-02-09 | 2002-05-29 | Depuy Acromed Inc | disc |
US5413576A (en) | 1993-02-10 | 1995-05-09 | Rivard; Charles-Hilaire | Apparatus for treating spinal disorder |
US5470333A (en) | 1993-03-11 | 1995-11-28 | Danek Medical, Inc. | System for stabilizing the cervical and the lumbar region of the spine |
US5415661A (en) * | 1993-03-24 | 1995-05-16 | University Of Miami | Implantable spinal assist device |
US5534028A (en) | 1993-04-20 | 1996-07-09 | Howmedica, Inc. | Hydrogel intervertebral disc nucleus with diminished lateral bulging |
DE4313192C1 (en) | 1993-04-22 | 1994-09-15 | Kirsch Axel | Cuff for accelerating healing of bone defects |
US6077262A (en) | 1993-06-04 | 2000-06-20 | Synthes (U.S.A.) | Posterior spinal implant |
FR2707480B1 (en) | 1993-06-28 | 1995-10-20 | Bisserie Michel | Intervertebral disc prosthesis. |
US5437669A (en) | 1993-08-12 | 1995-08-01 | Amei Technologies Inc. | Spinal fixation systems with bifurcated connectors |
FR2709246B1 (en) | 1993-08-27 | 1995-09-29 | Martin Jean Raymond | Dynamic implanted spinal orthosis. |
FR2709247B1 (en) * | 1993-08-27 | 1995-09-29 | Martin Jean Raymond | Device for anchoring spinal instrumentation on a vertebra. |
US5458641A (en) | 1993-09-08 | 1995-10-17 | Ramirez Jimenez; Juan J. | Vertebral body prosthesis |
CN1156255C (en) * | 1993-10-01 | 2004-07-07 | 美商-艾克罗米德公司 | Spinal implant |
US5415659A (en) | 1993-12-01 | 1995-05-16 | Amei Technologies Inc. | Spinal fixation system and pedicle clamp |
US5491882A (en) * | 1993-12-28 | 1996-02-20 | Walston; D. Kenneth | Method of making joint prosthesis having PTFE cushion |
US5879396A (en) * | 1993-12-28 | 1999-03-09 | Walston; D. Kenneth | Joint prosthesis having PTFE cushion |
US5514180A (en) * | 1994-01-14 | 1996-05-07 | Heggeness; Michael H. | Prosthetic intervertebral devices |
US5458642A (en) | 1994-01-18 | 1995-10-17 | Beer; John C. | Synthetic intervertebral disc |
EP0741547B1 (en) | 1994-01-26 | 2005-04-20 | Kyphon Inc. | Improved inflatable device for use in surgical protocol relating to fixation of bone |
US6716216B1 (en) | 1998-08-14 | 2004-04-06 | Kyphon Inc. | Systems and methods for treating vertebral bodies |
US5507745A (en) * | 1994-02-18 | 1996-04-16 | Sofamor, S.N.C. | Occipito-cervical osteosynthesis instrumentation |
US5653762A (en) | 1994-03-18 | 1997-08-05 | Pisharodi; Madhavan | Method of stabilizing adjacent vertebrae with rotating, lockable, middle-expanded intervertebral disk stabilizer |
US5947893A (en) | 1994-04-27 | 1999-09-07 | Board Of Regents, The University Of Texas System | Method of making a porous prothesis with biodegradable coatings |
US5571189A (en) | 1994-05-20 | 1996-11-05 | Kuslich; Stephen D. | Expandable fabric implant for stabilizing the spinal motion segment |
FR2721501B1 (en) | 1994-06-24 | 1996-08-23 | Fairant Paulette | Prostheses of the vertebral articular facets. |
US5509902A (en) * | 1994-07-25 | 1996-04-23 | Raulerson; J. Daniel | Subcutaneous catheter stabilizing devices and methods for securing a catheter using the same |
FR2722980B1 (en) | 1994-07-26 | 1996-09-27 | Samani Jacques | INTERTEPINOUS VERTEBRAL IMPLANT |
DE9412873U1 (en) * | 1994-08-10 | 1994-10-13 | Howmedica Gmbh | Device for stabilizing long bones, especially for osteotomy |
US5527312A (en) | 1994-08-19 | 1996-06-18 | Salut, Ltd. | Facet screw anchor |
FR2724553B1 (en) | 1994-09-15 | 1996-12-20 | Tornier Sa | EXTERNAL OR INTERNAL FIXER FOR THE REPAIR OF FRACTURES OR ARTHROPLASTIES OF THE SKELETON |
US5596247A (en) * | 1994-10-03 | 1997-01-21 | Pacific Scientific Company | Compact dimmable fluorescent lamps with central dimming ring |
US5738585A (en) * | 1994-10-12 | 1998-04-14 | Hoyt, Iii; Raymond Earl | Compact flexible couplings with inside diameter belt support and lock-on features |
US5824093A (en) | 1994-10-17 | 1998-10-20 | Raymedica, Inc. | Prosthetic spinal disc nucleus |
JPH10507386A (en) | 1994-10-17 | 1998-07-21 | レイメディカ, インコーポレイテッド | Artificial spinal disc nucleus |
FR2726459B1 (en) | 1994-11-07 | 1998-05-07 | Desauge Jean Pierre | VERTEBRAL FIXATION SYSTEM |
US5674296A (en) | 1994-11-14 | 1997-10-07 | Spinal Dynamics Corporation | Human spinal disc prosthesis |
US5474551A (en) | 1994-11-18 | 1995-12-12 | Smith & Nephew Richards, Inc. | Universal coupler for spinal fixation |
US5609641A (en) * | 1995-01-31 | 1997-03-11 | Smith & Nephew Richards Inc. | Tibial prosthesis |
US5571191A (en) | 1995-03-16 | 1996-11-05 | Fitz; William R. | Artificial facet joint |
US5569247A (en) | 1995-03-27 | 1996-10-29 | Smith & Nephew Richards, Inc. | Enhanced variable angle bone bolt |
US5669911A (en) | 1995-04-13 | 1997-09-23 | Fastenetix, L.L.C. | Polyaxial pedicle screw |
SE9501828D0 (en) | 1995-05-17 | 1995-05-17 | Astra Ab | Cutting guide |
ATE251423T1 (en) | 1995-06-06 | 2003-10-15 | Sdgi Holdings Inc | DEVICE FOR CONNECTING ADJACENT SPINAL SUPPORT RODS |
US5683391A (en) * | 1995-06-07 | 1997-11-04 | Danek Medical, Inc. | Anterior spinal instrumentation and method for implantation and revision |
US5575792A (en) | 1995-07-14 | 1996-11-19 | Fastenetix, L.L.C. | Extending hook and polyaxial coupling element device for use with top loading rod fixation devices |
US5643263A (en) | 1995-08-14 | 1997-07-01 | Simonson; Peter Melott | Spinal implant connection assembly |
NZ272994A (en) | 1995-09-12 | 2001-06-29 | C G Surgical Ltd | Spinal prosthesis device which stabilises lamina after laminoplasty |
US5658338A (en) | 1995-09-29 | 1997-08-19 | Tullos; Hugh S. | Prosthetic modular bone fixation mantle and implant system |
US5683392A (en) | 1995-10-17 | 1997-11-04 | Wright Medical Technology, Inc. | Multi-planar locking mechanism for bone fixation |
US5688274A (en) | 1995-10-23 | 1997-11-18 | Fastenetix Llc. | Spinal implant device having a single central rod and claw hooks |
US5704941A (en) * | 1995-11-03 | 1998-01-06 | Osteonics Corp. | Tibial preparation apparatus and method |
US6132462A (en) | 1995-12-22 | 2000-10-17 | Santen Pharmaceutical Co., Ltd. | Copolymers formed from three components and intraocular lenses made thereof |
US5645597A (en) | 1995-12-29 | 1997-07-08 | Krapiva; Pavel I. | Disc replacement method and apparatus |
US5766253A (en) | 1996-01-16 | 1998-06-16 | Surgical Dynamics, Inc. | Spinal fusion device |
US5649930A (en) | 1996-01-26 | 1997-07-22 | Kertzner; Richard I. | Orthopedic centering tool |
US5683466A (en) | 1996-03-26 | 1997-11-04 | Vitale; Glenn C. | Joint surface replacement system |
US5976133A (en) * | 1997-04-23 | 1999-11-02 | Trustees Of Tufts College | External fixator clamp and system |
FR2748387B1 (en) * | 1996-05-13 | 1998-10-30 | Stryker France Sa | BONE FIXATION DEVICE, IN PARTICULAR TO THE SACRUM, IN OSTEOSYNTHESIS OF THE SPINE |
US5678317A (en) | 1996-05-16 | 1997-10-21 | Stefanakos; Karlene | Method for measuring labial/facial flaccidity |
FR2749155B1 (en) | 1996-05-29 | 1999-10-01 | Alby Albert P | INTERVERTEBRAL LINK DEVICE |
US5811151A (en) * | 1996-05-31 | 1998-09-22 | Medtronic, Inc. | Method of modifying the surface of a medical device |
US5800433A (en) | 1996-05-31 | 1998-09-01 | Acromed Corporation | Spinal column retaining apparatus |
US5741255A (en) * | 1996-06-05 | 1998-04-21 | Acromed Corporation | Spinal column retaining apparatus |
US5741261A (en) * | 1996-06-25 | 1998-04-21 | Sdgi Holdings, Inc. | Minimally invasive spinal surgical methods and instruments |
US6019759A (en) * | 1996-07-29 | 2000-02-01 | Rogozinski; Chaim | Multi-Directional fasteners or attachment devices for spinal implant elements |
US6066325A (en) * | 1996-08-27 | 2000-05-23 | Fusion Medical Technologies, Inc. | Fragmented polymeric compositions and methods for their use |
JP3465214B2 (en) | 1996-09-09 | 2003-11-10 | 三菱樹脂株式会社 | Angle measuring jig for pipe connection |
US5879350A (en) * | 1996-09-24 | 1999-03-09 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5885286A (en) * | 1996-09-24 | 1999-03-23 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5797911A (en) | 1996-09-24 | 1998-08-25 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5964760A (en) | 1996-10-18 | 1999-10-12 | Spinal Innovations | Spinal implant fixation assembly |
US5863293A (en) * | 1996-10-18 | 1999-01-26 | Spinal Innovations | Spinal implant fixation assembly |
US6416515B1 (en) | 1996-10-24 | 2002-07-09 | Spinal Concepts, Inc. | Spinal fixation system |
US7302288B1 (en) | 1996-11-25 | 2007-11-27 | Z-Kat, Inc. | Tool position indicator |
JPH10179622A (en) | 1996-12-20 | 1998-07-07 | Mizuho Ika Kogyo Kk | Vertebral implant |
US5782833A (en) | 1996-12-20 | 1998-07-21 | Haider; Thomas T. | Pedicle screw system for osteosynthesis |
US5776135A (en) | 1996-12-23 | 1998-07-07 | Third Millennium Engineering, Llc | Side mounted polyaxial pedicle screw |
US6902566B2 (en) | 1997-01-02 | 2005-06-07 | St. Francis Medical Technologies, Inc. | Spinal implants, insertion instruments, and methods of use |
US5860977A (en) * | 1997-01-02 | 1999-01-19 | Saint Francis Medical Technologies, Llc | Spine distraction implant and method |
US5836948A (en) | 1997-01-02 | 1998-11-17 | Saint Francis Medical Technologies, Llc | Spine distraction implant and method |
US7101375B2 (en) | 1997-01-02 | 2006-09-05 | St. Francis Medical Technologies, Inc. | Spine distraction implant |
US7201751B2 (en) * | 1997-01-02 | 2007-04-10 | St. Francis Medical Technologies, Inc. | Supplemental spine fixation device |
US6068630A (en) * | 1997-01-02 | 2000-05-30 | St. Francis Medical Technologies, Inc. | Spine distraction implant |
US5700268A (en) | 1997-01-06 | 1997-12-23 | Zimmer, Inc. | Device for measuring leg length and off-set for a total hip replacement |
EP1006913B2 (en) * | 1997-02-11 | 2009-03-11 | Zimmer Spine, Inc. | Anterior cervical plating system |
IES80150B2 (en) * | 1997-04-30 | 1998-06-03 | Eskina Developments Limited | Spinal osteosynthesis device for mechanically interconnecting two adjacent vertebrae in particular lumbar vertebrae |
US6248105B1 (en) | 1997-05-17 | 2001-06-19 | Synthes (U.S.A.) | Device for connecting a longitudinal support with a pedicle screw |
PL337780A1 (en) | 1997-06-09 | 2000-09-11 | Kyphon Inc | Systems for treating broken or pathologically changed bones using expandable bodies |
DE29710484U1 (en) | 1997-06-16 | 1998-10-15 | Howmedica Gmbh | Receiving part for a holding component of a spinal implant |
US5893889A (en) * | 1997-06-20 | 1999-04-13 | Harrington; Michael | Artificial disc |
US5891145A (en) * | 1997-07-14 | 1999-04-06 | Sdgi Holdings, Inc. | Multi-axial screw |
US6004353A (en) | 1997-07-30 | 1999-12-21 | Medidea, Llc | Modular acetabular reconstruction plate |
US6228118B1 (en) | 1997-08-04 | 2001-05-08 | Gordon, Maya, Roberts And Thomas, Number 1, Llc | Multiple axis intervertebral prosthesis |
US6749361B2 (en) | 1997-10-06 | 2004-06-15 | Werner Hermann | Shackle element for clamping a fixation rod, a method for making a shackle element, a hook with a shackle element and a rode connector with a shackle element |
US5824094A (en) | 1997-10-17 | 1998-10-20 | Acromed Corporation | Spinal disc |
WO1999021501A1 (en) * | 1997-10-27 | 1999-05-06 | Saint Francis Medical Technologies, Llc | Spine distraction implant |
FR2770767B1 (en) | 1997-11-10 | 2000-03-10 | Dimso Sa | IMPLANT FOR VERTEBRA |
FR2771918B1 (en) * | 1997-12-09 | 2000-04-21 | Dimso Sa | CONNECTOR FOR SPINAL OSTEOSYNTHESIS DEVICE |
FR2774581B1 (en) | 1998-02-10 | 2000-08-11 | Dimso Sa | INTEREPINOUS STABILIZER TO BE ATTACHED TO SPINOUS APOPHYSIS OF TWO VERTEBRES |
US5984926A (en) | 1998-02-24 | 1999-11-16 | Jones; A. Alexander M. | Bone screw shimming and bone graft containment system and method |
US6010503A (en) * | 1998-04-03 | 2000-01-04 | Spinal Innovations, Llc | Locking mechanism |
US6014588A (en) * | 1998-04-07 | 2000-01-11 | Fitz; William R. | Facet joint pain relief method and apparatus |
US6019792A (en) * | 1998-04-23 | 2000-02-01 | Cauthen Research Group, Inc. | Articulating spinal implant |
US6290724B1 (en) | 1998-05-27 | 2001-09-18 | Nuvasive, Inc. | Methods for separating and stabilizing adjacent vertebrae |
US6132465A (en) | 1998-06-04 | 2000-10-17 | Raymedica, Inc. | Tapered prosthetic spinal disc nucleus |
US6090111A (en) | 1998-06-17 | 2000-07-18 | Surgical Dynamics, Inc. | Device for securing spinal rods |
US6565565B1 (en) | 1998-06-17 | 2003-05-20 | Howmedica Osteonics Corp. | Device for securing spinal rods |
WO1999065412A1 (en) | 1998-06-18 | 1999-12-23 | Pioneer Laboratories, Inc. | Spinal fixation system |
US6063121A (en) * | 1998-07-29 | 2000-05-16 | Xavier; Ravi | Vertebral body prosthesis |
US6231575B1 (en) | 1998-08-27 | 2001-05-15 | Martin H. Krag | Spinal column retainer |
US6113637A (en) | 1998-10-22 | 2000-09-05 | Sofamor Danek Holdings, Inc. | Artificial intervertebral joint permitting translational and rotational motion |
US6039763A (en) * | 1998-10-27 | 2000-03-21 | Disc Replacement Technologies, Inc. | Articulating spinal disc prosthesis |
US6214012B1 (en) | 1998-11-13 | 2001-04-10 | Harrington Arthritis Research Center | Method and apparatus for delivering material to a desired location |
US6193724B1 (en) * | 1998-11-25 | 2001-02-27 | Kwan-Ho Chan | Apparatus and method for determining the relative position of bones during surgery |
AU742502B2 (en) | 1998-11-26 | 2002-01-03 | Synthes Gmbh | Screw |
US6280447B1 (en) | 1998-12-23 | 2001-08-28 | Nuvasive, Inc. | Bony tissue resector |
US6165177A (en) | 1998-12-24 | 2000-12-26 | Depuy Orthopaedics, Inc. | Alignment guide for insertion of stem prosthesis |
CH693164A5 (en) * | 1998-12-29 | 2003-03-27 | Stryker Trauma Sa | A locating and locking. |
US20030069603A1 (en) | 2001-10-10 | 2003-04-10 | Little James S. | Medical tack with a variable effective length |
ES2156527B1 (en) | 1999-01-20 | 2002-01-16 | Alacreu Jose Barbera | VERTEBRAL FIXING SYSTEM DORSO-LUMBAR AND LUMBO-SACRO. |
US6050997A (en) | 1999-01-25 | 2000-04-18 | Mullane; Thomas S. | Spinal fixation system |
KR100324698B1 (en) | 1999-01-30 | 2002-02-27 | 구자교 | Spine fixing device |
US6086590A (en) | 1999-02-02 | 2000-07-11 | Pioneer Laboratories, Inc. | Cable connector for orthopaedic rod |
EP1743585B1 (en) | 1999-03-30 | 2007-12-05 | Howmedica Osteonics Corp. | Apparatus for spinal stabilization |
JP2003523784A (en) | 1999-04-05 | 2003-08-12 | サージカル ダイナミックス インコーポレイテッド | Artificial spinal ligament |
AU4246000A (en) | 1999-04-16 | 2000-11-02 | Nuvasive, Inc. | Articulation systems for positioning minimally invasive surgical tools |
US6607530B1 (en) | 1999-05-10 | 2003-08-19 | Highgate Orthopedics, Inc. | Systems and methods for spinal fixation |
ES2154227B1 (en) | 1999-06-30 | 2001-11-16 | Surgival Co S A | POLYAXIAL SYSTEM OF FIXATION OF VERTEBRAS. |
FR2796546B1 (en) | 1999-07-23 | 2001-11-30 | Eurosurgical | POLYAXIAL CONNECTOR FOR SPINAL IMPLANT |
DE19936286C2 (en) | 1999-08-02 | 2002-01-17 | Lutz Biedermann | bone screw |
US6200322B1 (en) * | 1999-08-13 | 2001-03-13 | Sdgi Holdings, Inc. | Minimal exposure posterior spinal interbody instrumentation and technique |
EP1204382B2 (en) | 1999-08-14 | 2006-09-27 | Aesculap AG & Co. KG | Bone screw |
US6224602B1 (en) | 1999-10-11 | 2001-05-01 | Interpore Cross International | Bone stabilization plate with a secured-locking mechanism for cervical fixation |
FR2799640B1 (en) | 1999-10-15 | 2002-01-25 | Spine Next Sa | IMPLANT INTERVETEBRAL |
US20050261770A1 (en) | 2004-04-22 | 2005-11-24 | Kuiper Mark K | Crossbar spinal prosthesis having a modular design and related implantation methods |
US8187303B2 (en) | 2004-04-22 | 2012-05-29 | Gmedelaware 2 Llc | Anti-rotation fixation element for spinal prostheses |
US7674293B2 (en) | 2004-04-22 | 2010-03-09 | Facet Solutions, Inc. | Crossbar spinal prosthesis having a modular design and related implantation methods |
US20050027361A1 (en) * | 1999-10-22 | 2005-02-03 | Reiley Mark A. | Facet arthroplasty devices and methods |
US7691145B2 (en) | 1999-10-22 | 2010-04-06 | Facet Solutions, Inc. | Prostheses, systems and methods for replacement of natural facet joints with artificial facet joint surfaces |
US6974478B2 (en) | 1999-10-22 | 2005-12-13 | Archus Orthopedics, Inc. | Prostheses, systems and methods for replacement of natural facet joints with artificial facet joint surfaces |
US6811567B2 (en) | 1999-10-22 | 2004-11-02 | Archus Orthopedics Inc. | Facet arthroplasty devices and methods |
DE60037462T2 (en) | 1999-10-22 | 2008-04-17 | Archus Orthopedics Inc., Redmond | Facettenarthroplastiegeräte |
DE19957332B4 (en) | 1999-11-29 | 2004-11-11 | Bernd Schäfer | cross-connector |
ATE336952T1 (en) * | 1999-12-01 | 2006-09-15 | Henry Graf | DEVICE FOR INTERVERBEL STABILIZATION |
US6447512B1 (en) * | 2000-01-06 | 2002-09-10 | Spinal Concepts, Inc. | Instrument and method for implanting an interbody fusion device |
US7662173B2 (en) | 2000-02-16 | 2010-02-16 | Transl, Inc. | Spinal mobility preservation apparatus |
US6558390B2 (en) | 2000-02-16 | 2003-05-06 | Axiamed, Inc. | Methods and apparatus for performing therapeutic procedures in the spine |
US6293949B1 (en) | 2000-03-01 | 2001-09-25 | Sdgi Holdings, Inc. | Superelastic spinal stabilization system and method |
US6572618B1 (en) | 2000-03-15 | 2003-06-03 | Sdgi Holdings, Inc. | Spinal implant connection assembly |
US6562038B1 (en) | 2000-03-15 | 2003-05-13 | Sdgi Holdings, Inc. | Spinal implant connection assembly |
US6309391B1 (en) | 2000-03-15 | 2001-10-30 | Sdgi Holding, Inc. | Multidirectional pivoting bone screw and fixation system |
US6302890B1 (en) | 2000-03-16 | 2001-10-16 | Leone Innovations Corporation | Pelvic alignment assembly |
US6565572B2 (en) | 2000-04-10 | 2003-05-20 | Sdgi Holdings, Inc. | Fenestrated surgical screw and method |
US6312431B1 (en) | 2000-04-24 | 2001-11-06 | Wilson T. Asfora | Vertebrae linking system |
US6340477B1 (en) * | 2000-04-27 | 2002-01-22 | Lifenet | Bone matrix composition and methods for making and using same |
AU2001274077A1 (en) | 2000-05-31 | 2001-12-11 | Vese, Silvana | Device for fixing bone sections separated because of a fracture |
US6749614B2 (en) | 2000-06-23 | 2004-06-15 | Vertelink Corporation | Formable orthopedic fixation system with cross linking |
GB0015430D0 (en) | 2000-06-24 | 2000-08-16 | Victrex Mfg Ltd | Bio-compatible polymeric materials |
GB0015433D0 (en) | 2000-06-24 | 2000-08-16 | Victrex Mfg Ltd | Bio-compatible polymeric materials |
GB0015424D0 (en) | 2000-06-24 | 2000-08-16 | Victrex Mfg Ltd | Bio-compatible polymeric materials |
FR2810874B1 (en) * | 2000-06-30 | 2002-08-23 | Materiel Orthopedique En Abreg | IMPLANT FOR OSTEOSYNTHESIS DEVICE COMPRISING A PART FOR BONE ANCHORING AND A BODY FOR FIXING ON A ROD |
US6730127B2 (en) * | 2000-07-10 | 2004-05-04 | Gary K. Michelson | Flanged interbody spinal fusion implants |
US6361506B1 (en) * | 2000-07-20 | 2002-03-26 | Sulzer Orthopedics Inc. | Incremental varus/valgus and flexion/extension measuring instrument |
US6761698B2 (en) | 2000-07-28 | 2004-07-13 | Olympus Corporation | Ultrasonic operation system |
US6524315B1 (en) * | 2000-08-08 | 2003-02-25 | Depuy Acromed, Inc. | Orthopaedic rod/plate locking mechanism |
US20080177310A1 (en) | 2000-10-20 | 2008-07-24 | Archus Orthopedics, Inc. | Facet arthroplasty devices and methods |
US6669698B1 (en) | 2000-10-24 | 2003-12-30 | Sdgi Holdings, Inc. | Vertebrae fastener placement guide |
EP1205152B1 (en) | 2000-11-10 | 2004-09-29 | Lafitt, S.A. | Spinal column deformity correction device |
US6514253B1 (en) * | 2000-11-22 | 2003-02-04 | Meei-Huei Yao | Apparatus for locating interlocking intramedullary nails |
US6579319B2 (en) * | 2000-11-29 | 2003-06-17 | Medicinelodge, Inc. | Facet joint replacement |
US20050080486A1 (en) | 2000-11-29 | 2005-04-14 | Fallin T. Wade | Facet joint replacement |
FR2817461B1 (en) | 2000-12-01 | 2003-08-15 | Henry Graf | INTERVERTEBRAL STABILIZATION DEVICE |
DE10060219B4 (en) | 2000-12-04 | 2004-12-02 | Hegenscheidt-Mfd Gmbh & Co. Kg | Quick change system for probe assembly |
US6565605B2 (en) | 2000-12-13 | 2003-05-20 | Medicinelodge, Inc. | Multiple facet joint replacement |
US6419703B1 (en) | 2001-03-01 | 2002-07-16 | T. Wade Fallin | Prosthesis for the replacement of a posterior element of a vertebra |
JP4471491B2 (en) | 2000-12-27 | 2010-06-02 | 京セラ株式会社 | Spine correction and fixation device |
US6451021B1 (en) | 2001-02-15 | 2002-09-17 | Third Millennium Engineering, Llc | Polyaxial pedicle screw having a rotating locking element |
US6989032B2 (en) | 2001-07-16 | 2006-01-24 | Spinecore, Inc. | Artificial intervertebral disc |
WO2002065954A1 (en) * | 2001-02-16 | 2002-08-29 | Queen's University At Kingston | Method and device for treating scoliosis |
DE10108965B4 (en) * | 2001-02-17 | 2006-02-23 | DePuy Spine Sàrl | bone screw |
US20030045935A1 (en) | 2001-02-28 | 2003-03-06 | Angelucci Christopher M. | Laminoplasty implants and methods of use |
US7090698B2 (en) | 2001-03-02 | 2006-08-15 | Facet Solutions | Method and apparatus for spine joint replacement |
FR2822051B1 (en) | 2001-03-13 | 2004-02-27 | Spine Next Sa | INTERVERTEBRAL IMPLANT WITH SELF-LOCKING ATTACHMENT |
US7220262B1 (en) | 2001-03-16 | 2007-05-22 | Sdgi Holdings, Inc. | Spinal fixation system and related methods |
US6802844B2 (en) | 2001-03-26 | 2004-10-12 | Nuvasive, Inc | Spinal alignment apparatus and methods |
US6511481B2 (en) | 2001-03-30 | 2003-01-28 | Triage Medical, Inc. | Method and apparatus for fixation of proximal femoral fractures |
US6443954B1 (en) | 2001-04-24 | 2002-09-03 | Dale G. Bramlet | Femoral nail intramedullary system |
DK2055267T3 (en) | 2001-05-01 | 2013-07-01 | Amedica Corp | Beam permeable bone graft |
US6719794B2 (en) | 2001-05-03 | 2004-04-13 | Synthes (U.S.A.) | Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure |
DE10135771B4 (en) | 2001-07-23 | 2006-02-16 | Aesculap Ag & Co. Kg | Facet joint implant |
US6520963B1 (en) * | 2001-08-13 | 2003-02-18 | Mckinley Lawrence M. | Vertebral alignment and fixation assembly |
US6736815B2 (en) | 2001-09-06 | 2004-05-18 | Core Medical, Inc. | Apparatus and methods for treating spinal discs |
US6648891B2 (en) | 2001-09-14 | 2003-11-18 | The Regents Of The University Of California | System and method for fusing spinal vertebrae |
US6712849B2 (en) * | 2001-10-01 | 2004-03-30 | Scandius Biomedical, Inc. | Apparatus and method for reconstructing a ligament |
US6554843B1 (en) * | 2001-10-15 | 2003-04-29 | Universal Optical Co., Ltd. | Cataract instrument |
US6623485B2 (en) | 2001-10-17 | 2003-09-23 | Hammill Manufacturing Company | Split ring bone screw for a spinal fixation system |
US6783527B2 (en) | 2001-10-30 | 2004-08-31 | Sdgi Holdings, Inc. | Flexible spinal stabilization system and method |
US6645214B2 (en) | 2001-11-12 | 2003-11-11 | Depuy Orthopaedics, Inc. | Apparatus and method for bone positioning |
FR2832054B1 (en) * | 2001-11-15 | 2004-09-10 | Rene Louis | POSTERIOR VERTEBRAL JOINT PROSTHESIS |
US20030125738A1 (en) | 2002-01-03 | 2003-07-03 | Khanna Rohit Kumar | Laminoplasty with laminar stabilization method and system |
US6979299B2 (en) | 2002-02-05 | 2005-12-27 | Zimmer Austin, Inc. | Measuring guide for use in orthopedic procedure |
US6626909B2 (en) | 2002-02-27 | 2003-09-30 | Kingsley Richard Chin | Apparatus and method for spine fixation |
US7011658B2 (en) * | 2002-03-04 | 2006-03-14 | Sdgi Holdings, Inc. | Devices and methods for spinal compression and distraction |
US7294127B2 (en) | 2002-03-05 | 2007-11-13 | Baylis Medical Company Inc. | Electrosurgical tissue treatment method |
US6669729B2 (en) | 2002-03-08 | 2003-12-30 | Kingsley Richard Chin | Apparatus and method for the replacement of posterior vertebral elements |
US6638281B2 (en) | 2002-03-21 | 2003-10-28 | Spinecore, Inc. | Gravity dependent pedicle screw tap hole guide |
US6682532B2 (en) | 2002-03-22 | 2004-01-27 | Depuy Acromed, Inc. | Coupling system and method for extending spinal instrumentation |
DE10312755B4 (en) | 2002-03-23 | 2007-11-29 | Bruno Kohler | Caliper, especially for the cervical spine |
US20030195631A1 (en) | 2002-04-12 | 2003-10-16 | Ferree Bret A. | Shape-memory spacers for artificial disc replacements |
US20030233148A1 (en) | 2002-04-23 | 2003-12-18 | Ferree Bret A. | Modular components to improve the fit of artificial disc replacements |
US7179294B2 (en) | 2002-04-25 | 2007-02-20 | Warsaw Orthopedic, Inc. | Articular disc prosthesis and method for implanting the same |
US6770095B2 (en) | 2002-06-18 | 2004-08-03 | Depuy Acroned, Inc. | Intervertebral disc |
AU2003265597A1 (en) | 2002-08-23 | 2004-03-11 | Paul C. Mcafee | Metal-backed uhmpe rod sleeve system preserving spinal motion |
US7331967B2 (en) * | 2002-09-09 | 2008-02-19 | Hansen Medical, Inc. | Surgical instrument coupling mechanism |
FR2844180B1 (en) | 2002-09-11 | 2005-08-05 | Spinevision | CONNECTING ELEMENT FOR THE DYNAMIC STABILIZATION OF A SPINAL FIXING SYSTEM AND SPINAL FASTENING SYSTEM COMPRISING SUCH A MEMBER |
JP2006500188A (en) * | 2002-09-20 | 2006-01-05 | インプライアント・リミテッド | Mechanically mounted elastomeric cover for prosthesis |
US20060122703A1 (en) | 2002-12-17 | 2006-06-08 | Max Aebi | Intervertebral implant |
US7101398B2 (en) | 2002-12-31 | 2006-09-05 | Depuy Acromed, Inc. | Prosthetic facet joint ligament |
US20050055096A1 (en) * | 2002-12-31 | 2005-03-10 | Depuy Spine, Inc. | Functional spinal unit prosthetic |
WO2004066865A2 (en) * | 2003-01-31 | 2004-08-12 | Spinalmotion, Inc. | Spinal midline indicator |
AU2003210887A1 (en) | 2003-02-06 | 2004-09-06 | Archus Orthopedics Inc. | Facet arthroplasty devices and methods |
US7559946B2 (en) | 2003-03-18 | 2009-07-14 | The Cleveland Clinic Foundation | Apparatus for insertion into a body lumen |
US7416553B2 (en) | 2003-04-09 | 2008-08-26 | Depuy Acromed, Inc. | Drill guide and plate inserter |
US7608104B2 (en) | 2003-05-14 | 2009-10-27 | Archus Orthopedics, Inc. | Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces |
US20040230201A1 (en) | 2003-05-14 | 2004-11-18 | Archus Orthopedics Inc. | Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces |
US20040230304A1 (en) | 2003-05-14 | 2004-11-18 | Archus Orthopedics Inc. | Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces |
US7074238B2 (en) * | 2003-07-08 | 2006-07-11 | Archus Orthopedics, Inc. | Prostheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces |
US7377942B2 (en) * | 2003-08-06 | 2008-05-27 | Warsaw Orthopedic, Inc. | Posterior elements motion restoring device |
US9254137B2 (en) * | 2003-08-29 | 2016-02-09 | Lanterna Medical Technologies Ltd | Facet implant |
US20050080428A1 (en) * | 2003-09-03 | 2005-04-14 | White Ralph Richard | Extracapsular surgical procedure for repair of anterior cruciate ligament rupture and surgical referencing instrument therefor |
AU2003285751A1 (en) * | 2003-10-20 | 2005-05-05 | Impliant Ltd. | Facet prosthesis |
US20050131406A1 (en) | 2003-12-15 | 2005-06-16 | Archus Orthopedics, Inc. | Polyaxial adjustment of facet joint prostheses |
US20080082171A1 (en) | 2004-04-22 | 2008-04-03 | Kuiper Mark K | Crossbar spinal prosthesis having a modular design and systems for treating spinal pathologies |
US7051451B2 (en) | 2004-04-22 | 2006-05-30 | Archus Orthopedics, Inc. | Facet joint prosthesis measurement and implant tools |
US7406775B2 (en) | 2004-04-22 | 2008-08-05 | Archus Orthopedics, Inc. | Implantable orthopedic device component selection instrument and methods |
US20070093833A1 (en) | 2004-05-03 | 2007-04-26 | Kuiper Mark K | Crossbar spinal prosthesis having a modular design and related implantation methods |
US7588578B2 (en) * | 2004-06-02 | 2009-09-15 | Facet Solutions, Inc | Surgical measurement systems and methods |
US7591836B2 (en) * | 2004-07-30 | 2009-09-22 | Zimmer Spine, Inc. | Surgical devices and methods for vertebral shifting utilizing spinal fixation systems |
JP2008510518A (en) * | 2004-08-18 | 2008-04-10 | アーカス・オーソペディクス・インコーポレーテッド | Adjoint level articulating device, spinal stabilization system and method |
US20060041311A1 (en) * | 2004-08-18 | 2006-02-23 | Mcleer Thomas J | Devices and methods for treating facet joints |
US20060041211A1 (en) * | 2004-08-19 | 2006-02-23 | Hawkinson Carla M | Hoof bandages |
US20060079895A1 (en) | 2004-09-30 | 2006-04-13 | Mcleer Thomas J | Methods and devices for improved bonding of devices to bone |
US20060085075A1 (en) | 2004-10-04 | 2006-04-20 | Archus Orthopedics, Inc. | Polymeric joint complex and methods of use |
EP1809214B1 (en) | 2004-10-25 | 2017-07-12 | Gmedelaware 2 LLC | Spinal prothesis having a modular design |
US8496686B2 (en) * | 2005-03-22 | 2013-07-30 | Gmedelaware 2 Llc | Minimally invasive spine restoration systems, devices, methods and kits |
AU2006227019A1 (en) | 2005-03-22 | 2006-09-28 | Fsi Acquisition Sub, Llc | Minimally invasive spine restoration systems, devices, methods and kits |
WO2007126428A2 (en) | 2005-12-20 | 2007-11-08 | Archus Orthopedics, Inc. | Arthroplasty revision system and method |
US20070233256A1 (en) | 2006-03-15 | 2007-10-04 | Ohrt John A | Facet and disc arthroplasty system and method |
WO2008019397A2 (en) | 2006-08-11 | 2008-02-14 | Archus Orthopedics, Inc. | Angled washer polyaxial connection for dynamic spine prosthesis |
US20080119845A1 (en) | 2006-09-25 | 2008-05-22 | Archus Orthopedics, Inc. | Facet replacement device removal and revision systems and methods |
-
2003
- 2003-05-14 US US10/438,294 patent/US20040230304A1/en not_active Abandoned
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2004
- 2004-04-12 JP JP2006532394A patent/JP2006528533A/en active Pending
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KR20060006839A (en) | 2006-01-19 |
CN1787795A (en) | 2006-06-14 |
JP2006528533A (en) | 2006-12-21 |
AU2004241945A1 (en) | 2004-12-02 |
US20040230304A1 (en) | 2004-11-18 |
EP1628600B1 (en) | 2012-12-26 |
US20080275505A1 (en) | 2008-11-06 |
US20060149375A1 (en) | 2006-07-06 |
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