CA2460766A1 - Spinal implant and method of use - Google Patents
Spinal implant and method of use Download PDFInfo
- Publication number
- CA2460766A1 CA2460766A1 CA002460766A CA2460766A CA2460766A1 CA 2460766 A1 CA2460766 A1 CA 2460766A1 CA 002460766 A CA002460766 A CA 002460766A CA 2460766 A CA2460766 A CA 2460766A CA 2460766 A1 CA2460766 A1 CA 2460766A1
- Authority
- CA
- Canada
- Prior art keywords
- implant
- configuration
- spinal implant
- spinal
- disc space
- 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.)
- Granted
Links
Classifications
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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
- A61F2/46—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
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
-
- 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
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00261—Discectomy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
- A61B2017/00557—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated inflatable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00867—Material properties shape memory effect
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
-
- 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
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2002/444—Intervertebral or spinal discs, e.g. resilient for replacing the nucleus pulposus
-
- 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
- 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
- A61F2002/4627—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 the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Transplantation (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
Abstract
A spinal implant having a smaller transverse cross-sectional dimension in the radially compressed configuration than in a first expanded configuration and a more linear configuration in the second delivery configuration than in the first curved configuration. The implant assumes the radially compressed configuration and second delivery configuration during delivery to the disc space and assumes the first curved configuration and first expanded configuration upon placement within the disc space. The implant further moves towards the radially compressed configuration once implanted in response to a load placed on the implant by the vertebral bodies.
Claims (22)
1. A spinal implant having a first expanded configuration, a first curved configuration, a second radially compressed configuration, and a second delivery configuration, the implant having a smaller transverse cross-sectional dimension in the radially compressed configuration than in the first expanded configuration and having a more linear configuration in the second delivery configuration than in the first curved configuration, the implant assuming the second radially compressed configuration and second delivery configuration during delivery to the disc space and assuming the first curved configuration and first expanded configuration upon placement within the disc space, the implant further moving towards the radially compressed configuration once implanted in response to a load placed on the implant by the vertebral bodies.
2. The spinal implant of claim 1, wherein the implant is composed of shape memory material with a memorized position in the first expanded configuration and the first curved configuration.
3. The spinal implant of claim 1, wherein the implant is substantially C-shaped in the first curved configuration.
4. The spinal implant of claim 1, wherein the implant forms a closed curve in the first curved configuration.
5. The spinal implant of claim 2, wherein the implant is substantially C-shaped in transverse cross section.
6. The spinal implant of claim 2, wherein the implant is substantially circular in transverse cross section.
7. The spinal implant of claim 2, wherein the implant is substantially rectangular in transverse cross section having at least a first and second substantially planar surface.
8. The spinal implant of claim 1, further comprising an insert material contained within the implant.
9. The spinal implant of claim 8, wherein the insert material is contained within the implant by a tongue and groove arrangement.
10. The spinal implant of claim 2, further comprising an insert material contained .
within the implant.
within the implant.
11. The spinal implant of claim 10, wherein the insert material is contained within the implant by a tongue and groove arrangement.
12. The spinal implant of claim 1, wherein an outer surface of the implant is roughened to enhance bone ingrowth.
13. The spinal implant of claim 1, wherein the implant includes a plurality of openings in an outer surface to enhance flexibility.
14. The spinal implant of claim 1, wherein the implant includes a plurality of grooves in an outer surface to enhance flexibility.
15. A spinal implant having an outer housing composed of shape memory material, the' outer housing having a memorized non-linear configuration and being radially compressible from a first configuration to a second configuration by the vertebral bodies in response to a load placed on the outer housing and returning to its first configuration upon removal of the load.
16. The spinal implant of claim 15, further comprising a filler material disposed within the outer housing.
17. The spinal implant of claim 15, wherein the outer support contains a roughened surface to enhance bone ingrowth.
18. The spinal implant of claim 16, wherein the filler material is retained by a tongue and groove arrangement.
19. A method of minimally invasively inserting a spinal implant in a disc space comprising:
providing a delivery instrument containing the spinal implant in a first configuration;
inser ting the delivery instrument through a cannula to the disc space;
deploying the implant from the delivery instrument to position the implant in the disc space, the implant returning towards a memorized second configuration within the disc space; and removing the delivery instrument and leaving the implant in place, the implant moving between unstressed and stressed positions within the disc space in response to a load placed on the implant.
providing a delivery instrument containing the spinal implant in a first configuration;
inser ting the delivery instrument through a cannula to the disc space;
deploying the implant from the delivery instrument to position the implant in the disc space, the implant returning towards a memorized second configuration within the disc space; and removing the delivery instrument and leaving the implant in place, the implant moving between unstressed and stressed positions within the disc space in response to a load placed on the implant.
20. The method of claim 19, further comprising the step of distracting the disc space with an inflatable balloon prior to deploying the implant from the delivery instrument.
21. The method of claim 19, further comprising the step of injecting cold saline into the delivery instrument to maintain the spinal implant in the martensitic state prior to deploying the implant, the implant returning to the austenitic state in response to warming by body temperature when deployed from the delivery instrument.
22. The method of claim 19, further comprising the step removing the disc nucleus through the cannula prior to the step of inserting the delivery instrument through the cannula.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32643801P | 2001-10-02 | 2001-10-02 | |
US60/326,438 | 2001-10-02 | ||
PCT/US2002/030263 WO2003028587A2 (en) | 2001-10-02 | 2002-09-24 | Spinal implant and method of use |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2460766A1 true CA2460766A1 (en) | 2003-04-10 |
CA2460766C CA2460766C (en) | 2010-06-01 |
Family
ID=23272204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2460766A Expired - Fee Related CA2460766C (en) | 2001-10-02 | 2002-09-24 | Spinal implant and method of use |
Country Status (8)
Country | Link |
---|---|
US (2) | US7267687B2 (en) |
EP (1) | EP1432371B1 (en) |
JP (1) | JP4394441B2 (en) |
AU (1) | AU2002334655B2 (en) |
CA (1) | CA2460766C (en) |
DE (1) | DE60232893D1 (en) |
ES (1) | ES2329665T3 (en) |
WO (1) | WO2003028587A2 (en) |
Families Citing this family (130)
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AU2002334655B2 (en) | 2008-06-05 |
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