US20120277797A1 - Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member - Google Patents
Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member Download PDFInfo
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- US20120277797A1 US20120277797A1 US13/493,835 US201213493835A US2012277797A1 US 20120277797 A1 US20120277797 A1 US 20120277797A1 US 201213493835 A US201213493835 A US 201213493835A US 2012277797 A1 US2012277797 A1 US 2012277797A1
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- Prior art keywords
- longitudinal member
- rod
- bone
- longitudinal
- section
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- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/701—Longitudinal elements with a non-circular, e.g. rectangular, cross-section
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
-
- 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
Definitions
- the present application relates to a longitudinal member for use in spinal or trauma surgery and a stabilization device with such a longitudinal member.
- a dynamic stabilization system for segments of the spinal column which comprises a flexible rod made of an elastic material and bone anchors to anchor the rod in the vertebrae is known from EP 1 364 622 A2 and EP 1 527 742 A1, respectively.
- the material of the rod is a biocompatible polymer material, for example a material on the basis of polyurethane.
- the rod has a corrugated surface with the corrugations extending in a direction transverse to the rod axis.
- the elastic rods are manufactured by injection molding whereby the molten plastic material is injected at high pressure into a mold which is the inverse of the desired shape.
- the polymer chains 100 of the material are entangled and may include filling particles 101 and transverse links 102 between them.
- a rod 103 which is made by injection molding comprises an isotropic structure of the polymer chains and is therefore non homogeneous in a sense that it comprises defects in its macromolecular structure.
- the known elastomer rods exhibit a local flow of material when pressure is exerted onto their surface in the process of fixing the rod within a receiving part of a bone anchoring element. This local flow of material may cause a loosening of the fixation of the rod within the bone anchoring element.
- a longitudinal member or a rod according to aspects of the disclosure has the advantage that its tendency to flow when being fixed to the bone anchor is reduced in comparison to the known injection molded elastomer rods.
- the longitudinal member in form of the extruded elastomer rod exhibits a lower permanent set, which characterizes the deformation remaining after removal of the deforming stress, and a higher stiffness characterized by the e-modulus compared to the injection molded rod at identical dimensions of the rod. Therefore, under identical load conditions, an extruded elastomer rod with smaller dimensions can be used.
- the strength against mechanical tensile and/or compressive loads and the abrasion resistance is enhanced. The costs for manufacturing are reduced with regard to the necessary tools and machines which are less expensive compared to the costs for the manufacturing by injection molding.
- the rod can be cut to the desired length before or during surgery.
- FIG. 1 shows a schematic representation of an arrangement of polymer chains of a polymer plastic material after injection molding.
- FIG. 2 shows a schematic cross-section of a spinal rod made of a polymer plastic material produced by injection molding.
- FIG. 3 shows a perspective view of a rod according to the present disclosure.
- FIG. 4 shows a schematic cross-sectional view of the rod according to FIG. 3 in a plane including the longitudinal axis of the rod.
- FIG. 5 shows a schematic cross-sectional view of the rod according to FIG. 3 in a plane perpendicular to the longitudinal axis.
- FIGS. 6 a - 6 g show examples of cross-sections of the rod.
- FIG. 7 shows a stabilization device for the spinal column including a rod according to the disclosure and two monoaxial bone screws.
- FIG. 8 a shows a stabilization device for the spinal column including a rod according to the disclosure and two polyaxial bone screws.
- FIG. 8 b schematically shows the forces acting onto the rod under axial load and flexion.
- FIG. 9 shows application of the stabilization device according to the disclosure to the spinal column for the purpose of correction of scoliosis, wherein the rod according to the disclosure is in a first, pre-stressed condition.
- FIG. 10 shows the stabilization device of FIG. 9 in a second condition.
- FIG. 11 is a schematic view showing a bone screw and a clamp anchored in a vertebra and fixing the rod.
- FIG. 12 shows a modified example of a bone anchoring element receiving the rod.
- FIGS. 3 to 5 show an embodiment of the disclosure used as a spinal rod 1 .
- the rod has a substantially circular cross section and a length which is suitable to span a distance between at least two vertebrae.
- the diameter of the rod can be selected so as to be compatible with that of known metallic spinal rods.
- the rod 1 can be connected to known bone screws.
- the cross-section of the rod is constant over the length of the rod.
- the rod is made of a biocompatible plastic material which can be molded by extrusion.
- the material can be a thermoplastic material such as polyaryletheretherketone (PEEK).
- PEEK polyaryletheretherketone
- the material is flexible, such as an elastomer. Suitable elastomers are for example polymer materials on the basis of polyurethane, polycarbonate-urethane (PCU) or silicone.
- PCU polycarbonate-urethane
- silicone silicone
- the macromolecular construction of the rod 1 is characterized by polymer chains 2 of the elastomer material which are substantially aligned in the longitudinal direction of the rod 1 .
- the macromolecular structure of the rod is therefore substantially uniform in the longitudinal direction.
- the polymer chains 2 form a fiber-like structure with the fibers oriented in the longitudinal direction, thus being load oriented.
- the rod 1 is preferably manufactured by extrusion.
- the solid or fluid raw material is filled in an extruder and then pressed through an opening.
- the parameters such as temperature and pressure during the extrusion process depend on the material used and will be recognized by those skilled in the art.
- the rod 1 can be distinguished from a conventional rod made of the same material but manufactured for example by injection molding, as shown in FIG. 2 .
- the extruded rod has enhanced mechanical strength compared to a rod made of the same material by means of injection molding. For example, the strength against mechanical tensile and/or compressive loads is enhanced. Furthermore, the wear resistance is enhanced. Therefore, the rod implant has an improved lifetime.
- the rod can have other shapes than a circular cross section.
- different cross sections such as circular ( FIG. 6 a ), square ( FIG. 6 b ), rounded square ( FIG. 6 c ), oval-shaped ( FIG. 6 d ), rectangular ( FIG. 6 e ), rounded rectangular ( FIG. 6 f ) or star-shaped ( FIG. 6 g ) or triangular are possible.
- the cross-section is constant over the length of the rod. With a non-circular cross-section of the rod, a rotation of the rod in the bone anchoring element to which it is connected can be prevented.
- the shape of the cross-section can be used to achieve bending properties in flexion/extension movement and lateral bending which can differ from each other.
- a stabilization device using the rod according to the disclosure comprises at least two bone anchoring elements for connection of the rod to the bone.
- the bone anchoring elements are monoaxial bone screws 10 , 10 ′ each comprising a threaded shaft 11 which is to be anchored in a vertebra and a receiving part 12 which is rigidly connected to the threaded shaft.
- the receiving part 12 has a substantially U-shaped' recess to receive the rod 1 .
- a locking element for example an inner screw to be screwed into the recess or, as shown, an outer nut 13 is provided to fix the rod 1 in the recess.
- the bone anchoring elements are made of a biocompatible rigid material, for example of a biocompatible metal, such as titanium or a metal alloy.
- the bone anchoring elements 10 , 10 ′ are screwed into the vertebrae which shall be stabilized. Then the rod 1 is inserted into the receiving parts 12 and, after adjustment of its position, fixed in the receiving part by means of the locking element 13 . Due to the uniformly aligned macromolecular structure of the rod the tendency to flow under pressure of the locking element is reduced. Therefore, the risk of loosening of the fixation between the rod and the bone anchoring element is reduced. Since the rod exhibits elasticity under flexion, extension and torsion of the spinal segment, the spinal segment can be dynamically stabilized. The elasticity required for a certain application can be obtained by selecting the material and/or the size and/or the shape of the cross-section of the extruded rod.
- the rod 1 is used in a straight state.
- the vertebral segment can perform a limited motion in all planes controlled by the elasticity of the rod.
- FIG. 8 a shows a second example of a stabilization device using the extruded rod 1 .
- the stabilization device has at least two polyaxial bone anchoring elements 14 and 14 ′ having a threaded shaft 15 to be anchored in the bone and a spherically-shaped head 16 at one end.
- the head 16 is pivotably held in a receiving part 17 which also receives the rod 1 in a recess.
- a pressure element (not shown) is provided which presses onto the head to fix the head in the receiving part in its angular position.
- a locking element (not shown) is also provided to fix the rod in the recess.
- the bone anchoring elements 14 and 14 ′ are screwed into the vertebrae and thereafter the rod 1 is inserted. Since the head 16 is pivotably held in the receiving part 17 the position of the receiving parts can be adjusted relative to the heads. After adjustment of the position of the receiving parts relative to the heads and of the rod relative to the receiving part, the connection is locked by means of the locking element.
- FIG. 8 b schematically shows the forces acting onto the rod under axial (A) and flexural (F) load during motion of the spinal segment shown in FIG. 8 a .
- the force components of the axial and flexural load are mainly oriented in the direction of the alignment of the polymer chains 2 . This renders the extruded rod particularly suitable for the application in dynamic stabilization of the spinal column. This also applies to the stabilization device shown in FIG. 7 using monoaxial screws.
- FIGS. 9 and 10 show an example of a clinical application of a correction device.
- the correction device which includes two bone anchoring elements 10 and the extruded rod 1 is applied to a spinal section exhibiting scoliosis.
- the elastic rod is bent out of its neutral straight shape so as to be adapted to the curvature of the spinal deformity as shown in FIG. 9 .
- a pretension is generated in the rod which urges the deformed part of the spine into a straight position as shown in FIG. 10 .
- monoaxial or polyaxial screws can be used.
- Polyaxial screws have the advantage that the shaft and the head can be aligned for receiving the rod.
- FIG. 11 shows a schematic view in the direction of the longitudinal axis of the spine of one bone anchoring element anchored in a vertebra.
- the extruded rod is clamped in the receiving part 12 by the locking element 13 .
- the polymer chains 2 are substantially aligned in the longitudinal direction of the rod. If required, additional fixation in the bone can be provided by means of clamps 20 .
- FIG. 12 shows a modified example of a bone anchoring element with the rod inserted into the recess of the receiving part.
- the receiving part 18 comprises a recess 19 with a crosssection which differs from the cross-section of the rod.
- the cross section of the recess is ovalshaped while the cross-section of the rod is circular with a diameter smaller that that of the recess.
- Fixation can be achieved via a locking element (not shown) either directly or with a filling piece (not shown) between the locking element and the rod.
- the disclosure is not limited to the above described embodiments and examples of application.
- the features of the examples described can be combined with each other.
- the rod is shown to connect two bone anchoring elements, it can have a length sufficient to connect more than two bone anchoring elements. Since the rod is made of an elastomer, the length can be adapted before or at the time of surgery by cutting the rod.
- the rod can be made fully or partially of the polymer material. For certain applications it is sufficient that a section of the whole rod is made of extruded polymer material. The length of the section depends on the specific application and the required flexibility.
- a non isotropic shape for the cross-section such as for example a rectangular shape, can be used for providing a rod with elastic characteristics which differ dependent on the direction.
- the rod can be hollow and can include a core in its hollow interior for obtaining further characteristics.
- bone anchoring elements all known types can be used which are typically used with the known metallic rods.
- the disclosure is also not limited to the application for the spine.
- the rod can also be used in stabilizing a fractured bone, for example instead of a metallic rod in a fixateur adhere or interne.
- polymer material as described above means a single polymer material or mixtures of polymer materials including co-polymers and so-called block co-polymers having hard and soft segments. It also includes polymer materials with additions such as filling particles or strengthening fibres like carbon fibres or the like. Strengthening fibers can be used to enhance the stiffness, if required.
Abstract
A longitudinal member for use in spinal or trauma surgery is provided which is sized to span a distance between at least two vertebrae or two bone parts, wherein the longitudinal member is made at least partially of a polymer material, such as an elastomer, which is extruded. The polymer chains of the longitudinal member are substantially aligned in the longitudinal direction of the member. The longitudinal member is included in a dynamic stabilization device having at least two bone anchoring elements and such a longitudinal member connecting the bone anchoring elements.
Description
- This application is a continuation of allowed U.S. patent application Ser. No. 11/749,395, filed May 16, 2007, which claims the benefit of U.S. Provisional Patent Application Ser. No. 60/800,986, filed May 16, 2006, and claims priority from European Patent Application EP06010070.8, filed May 16, 2006, the entire disclosures of which are incorporated herein by reference.
- The present application relates to a longitudinal member for use in spinal or trauma surgery and a stabilization device with such a longitudinal member.
- A dynamic stabilization system for segments of the spinal column which comprises a flexible rod made of an elastic material and bone anchors to anchor the rod in the vertebrae is known from
EP 1 364 622 A2 andEP 1 527 742 A1, respectively. The material of the rod is a biocompatible polymer material, for example a material on the basis of polyurethane. The rod has a corrugated surface with the corrugations extending in a direction transverse to the rod axis. - Usually, the elastic rods are manufactured by injection molding whereby the molten plastic material is injected at high pressure into a mold which is the inverse of the desired shape. As shown in
FIG. 1 , after injection molding, thepolymer chains 100 of the material are entangled and may includefilling particles 101 andtransverse links 102 between them. Arod 103 which is made by injection molding comprises an isotropic structure of the polymer chains and is therefore non homogeneous in a sense that it comprises defects in its macromolecular structure. The known elastomer rods exhibit a local flow of material when pressure is exerted onto their surface in the process of fixing the rod within a receiving part of a bone anchoring element. This local flow of material may cause a loosening of the fixation of the rod within the bone anchoring element. - Based on the above, there is a need to provide a longitudinal member for use in spinal or trauma surgery and a stabilization device using such a longitudinal member manufacturing which has improved mechanical properties as well as reduced manufacturing costs compared to the known polymer rods.
- A longitudinal member or a rod according to aspects of the disclosure has the advantage that its tendency to flow when being fixed to the bone anchor is reduced in comparison to the known injection molded elastomer rods. In addition, the longitudinal member in form of the extruded elastomer rod exhibits a lower permanent set, which characterizes the deformation remaining after removal of the deforming stress, and a higher stiffness characterized by the e-modulus compared to the injection molded rod at identical dimensions of the rod. Therefore, under identical load conditions, an extruded elastomer rod with smaller dimensions can be used. Furthermore, the strength against mechanical tensile and/or compressive loads and the abrasion resistance is enhanced. The costs for manufacturing are reduced with regard to the necessary tools and machines which are less expensive compared to the costs for the manufacturing by injection molding.
- The rod can be cut to the desired length before or during surgery.
- Further features and advantages of the disclosure will become apparent and will be best understood by reference to the following detailed description of embodiments taken in conjunction with the accompanying drawings
-
FIG. 1 shows a schematic representation of an arrangement of polymer chains of a polymer plastic material after injection molding. -
FIG. 2 shows a schematic cross-section of a spinal rod made of a polymer plastic material produced by injection molding. -
FIG. 3 shows a perspective view of a rod according to the present disclosure. -
FIG. 4 shows a schematic cross-sectional view of the rod according toFIG. 3 in a plane including the longitudinal axis of the rod. -
FIG. 5 shows a schematic cross-sectional view of the rod according toFIG. 3 in a plane perpendicular to the longitudinal axis. -
FIGS. 6 a-6 g show examples of cross-sections of the rod. -
FIG. 7 shows a stabilization device for the spinal column including a rod according to the disclosure and two monoaxial bone screws. -
FIG. 8 a shows a stabilization device for the spinal column including a rod according to the disclosure and two polyaxial bone screws. -
FIG. 8 b schematically shows the forces acting onto the rod under axial load and flexion. -
FIG. 9 shows application of the stabilization device according to the disclosure to the spinal column for the purpose of correction of scoliosis, wherein the rod according to the disclosure is in a first, pre-stressed condition. -
FIG. 10 shows the stabilization device ofFIG. 9 in a second condition. -
FIG. 11 is a schematic view showing a bone screw and a clamp anchored in a vertebra and fixing the rod. -
FIG. 12 shows a modified example of a bone anchoring element receiving the rod. -
FIGS. 3 to 5 show an embodiment of the disclosure used as aspinal rod 1. The rod has a substantially circular cross section and a length which is suitable to span a distance between at least two vertebrae. The diameter of the rod can be selected so as to be compatible with that of known metallic spinal rods. In this case, therod 1 can be connected to known bone screws. In the embodiment shown the cross-section of the rod is constant over the length of the rod. - The rod is made of a biocompatible plastic material which can be molded by extrusion. For example, the material can be a thermoplastic material such as polyaryletheretherketone (PEEK). Preferably, the material is flexible, such as an elastomer. Suitable elastomers are for example polymer materials on the basis of polyurethane, polycarbonate-urethane (PCU) or silicone. The rod exhibits a three-dimensional elasticity in such a way that a restoring force acts when the rod is put under load which restores the original shape of the rod.
- As can be seen in particular in
FIGS. 3 and 4 , the macromolecular construction of therod 1 is characterized bypolymer chains 2 of the elastomer material which are substantially aligned in the longitudinal direction of therod 1. The macromolecular structure of the rod is therefore substantially uniform in the longitudinal direction. Thepolymer chains 2 form a fiber-like structure with the fibers oriented in the longitudinal direction, thus being load oriented. - The
rod 1 is preferably manufactured by extrusion. In the well known manufacturing process of extrusion, the solid or fluid raw material is filled in an extruder and then pressed through an opening. The parameters such as temperature and pressure during the extrusion process depend on the material used and will be recognized by those skilled in the art. - Hence, the
rod 1 can be distinguished from a conventional rod made of the same material but manufactured for example by injection molding, as shown inFIG. 2 . The extruded rod has enhanced mechanical strength compared to a rod made of the same material by means of injection molding. For example, the strength against mechanical tensile and/or compressive loads is enhanced. Furthermore, the wear resistance is enhanced. Therefore, the rod implant has an improved lifetime. - The rod can have other shapes than a circular cross section. As can be seen in
FIGS. 6 a to 6 g, different cross sections such as circular (FIG. 6 a), square (FIG. 6 b), rounded square (FIG. 6 c), oval-shaped (FIG. 6 d), rectangular (FIG. 6 e), rounded rectangular (FIG. 6 f) or star-shaped (FIG. 6 g) or triangular are possible. Preferably the cross-section is constant over the length of the rod. With a non-circular cross-section of the rod, a rotation of the rod in the bone anchoring element to which it is connected can be prevented. In addition, the shape of the cross-section can be used to achieve bending properties in flexion/extension movement and lateral bending which can differ from each other. - A stabilization device using the rod according to the disclosure comprises at least two bone anchoring elements for connection of the rod to the bone. As can be seen in
FIGS. 7 and 8 , according to a first example, the bone anchoring elements are monoaxial bone screws 10, 10′ each comprising a threadedshaft 11 which is to be anchored in a vertebra and a receivingpart 12 which is rigidly connected to the threaded shaft. The receivingpart 12 has a substantially U-shaped' recess to receive therod 1. A locking element, for example an inner screw to be screwed into the recess or, as shown, anouter nut 13 is provided to fix therod 1 in the recess. The bone anchoring elements are made of a biocompatible rigid material, for example of a biocompatible metal, such as titanium or a metal alloy. - In use, first, the
bone anchoring elements rod 1 is inserted into the receivingparts 12 and, after adjustment of its position, fixed in the receiving part by means of the lockingelement 13. Due to the uniformly aligned macromolecular structure of the rod the tendency to flow under pressure of the locking element is reduced. Therefore, the risk of loosening of the fixation between the rod and the bone anchoring element is reduced. Since the rod exhibits elasticity under flexion, extension and torsion of the spinal segment, the spinal segment can be dynamically stabilized. The elasticity required for a certain application can be obtained by selecting the material and/or the size and/or the shape of the cross-section of the extruded rod. - In the stabilization device of
FIG. 7 therod 1 is used in a straight state. The vertebral segment can perform a limited motion in all planes controlled by the elasticity of the rod. -
FIG. 8 a shows a second example of a stabilization device using the extrudedrod 1. The stabilization device has at least two polyaxial bone anchoring elements 14 and 14′ having a threadedshaft 15 to be anchored in the bone and a spherically-shapedhead 16 at one end. Thehead 16 is pivotably held in a receivingpart 17 which also receives therod 1 in a recess. Preferably, a pressure element (not shown) is provided which presses onto the head to fix the head in the receiving part in its angular position. A locking element (not shown) is also provided to fix the rod in the recess. - In use, like in the first example, the bone anchoring elements 14 and 14′ are screwed into the vertebrae and thereafter the
rod 1 is inserted. Since thehead 16 is pivotably held in the receivingpart 17 the position of the receiving parts can be adjusted relative to the heads. After adjustment of the position of the receiving parts relative to the heads and of the rod relative to the receiving part, the connection is locked by means of the locking element. -
FIG. 8 b schematically shows the forces acting onto the rod under axial (A) and flexural (F) load during motion of the spinal segment shown inFIG. 8 a. As can be seen, the force components of the axial and flexural load are mainly oriented in the direction of the alignment of thepolymer chains 2. This renders the extruded rod particularly suitable for the application in dynamic stabilization of the spinal column. This also applies to the stabilization device shown inFIG. 7 using monoaxial screws. -
FIGS. 9 and 10 show an example of a clinical application of a correction device. The correction device which includes twobone anchoring elements 10 and the extrudedrod 1 is applied to a spinal section exhibiting scoliosis. The elastic rod is bent out of its neutral straight shape so as to be adapted to the curvature of the spinal deformity as shown inFIG. 9 . By narrowing the distance between the screw heads of the correction device as indicated by the arrows inFIG. 9 , a pretension is generated in the rod which urges the deformed part of the spine into a straight position as shown inFIG. 10 . For the bone anchoring elements monoaxial or polyaxial screws can be used. Polyaxial screws have the advantage that the shaft and the head can be aligned for receiving the rod. -
FIG. 11 shows a schematic view in the direction of the longitudinal axis of the spine of one bone anchoring element anchored in a vertebra. The extruded rod is clamped in the receivingpart 12 by the lockingelement 13. Thepolymer chains 2 are substantially aligned in the longitudinal direction of the rod. If required, additional fixation in the bone can be provided by means ofclamps 20. -
FIG. 12 shows a modified example of a bone anchoring element with the rod inserted into the recess of the receiving part. The receivingpart 18 comprises arecess 19 with a crosssection which differs from the cross-section of the rod. In the example shown the cross section of the recess is ovalshaped while the cross-section of the rod is circular with a diameter smaller that that of the recess. Fixation can be achieved via a locking element (not shown) either directly or with a filling piece (not shown) between the locking element and the rod. - The disclosure is not limited to the above described embodiments and examples of application. The features of the examples described can be combined with each other. Although the rod is shown to connect two bone anchoring elements, it can have a length sufficient to connect more than two bone anchoring elements. Since the rod is made of an elastomer, the length can be adapted before or at the time of surgery by cutting the rod.
- The rod can be made fully or partially of the polymer material. For certain applications it is sufficient that a section of the whole rod is made of extruded polymer material. The length of the section depends on the specific application and the required flexibility. A non isotropic shape for the cross-section, such as for example a rectangular shape, can be used for providing a rod with elastic characteristics which differ dependent on the direction.
- The rod can be hollow and can include a core in its hollow interior for obtaining further characteristics.
- With the manufacturing method of extrusion it is possible to produce rods with different shapes and diameters of the crosssection at low costs, since it is not necessary to use complex molds and expensive machines like in the injection molding process.
- For the bone anchoring elements all known types can be used which are typically used with the known metallic rods.
- The disclosure is also not limited to the application for the spine. The rod can also be used in stabilizing a fractured bone, for example instead of a metallic rod in a fixateur externe or interne.
- The term polymer material as described above means a single polymer material or mixtures of polymer materials including co-polymers and so-called block co-polymers having hard and soft segments. It also includes polymer materials with additions such as filling particles or strengthening fibres like carbon fibres or the like. Strengthening fibers can be used to enhance the stiffness, if required.
- While a particular form of the disclosure has been illustrated and described, it will be apparent that various modifications can be made without departing from the spirit and scope of the disclosure. Accordingly, it is not intended that the disclosure be limited, except as by the appended claims.
Claims (14)
1. A longitudinal member for use in spinal or trauma surgery which is sized to span a distance between at least two vertebrae or two bone parts, the longitudinal member exhibiting bending and axial elasticity, wherein the longitudinal member is made of an elastomer material having generally longitudinal extending fibers and uniform cross-section.
2. The longitudinal member of claim 1 , wherein the longitudinal member is manufactured by extrusion.
3. The longitudinal member of claim 1 , wherein polymer chains of the elastomer material are substantially aligned in a longitudinal direction of the longitudinal member.
4. The longitudinal member of claim 1 , wherein said elastomer material comprises a polymer on the basis of any one of polyurethane, polycarbonate-urethane and silicone.
5. The longitudinal member of claim 1 , wherein the longitudinal member is a rod.
6. The longitudinal member of claim 1 , wherein the cross-section is substantially circular.
7. The longitudinal member of claim 1 , wherein the whole length of the longitudinal member is made of said elastomer material.
8. A stabilization device for stabilizing vertebrae or bone parts, comprising:
a longitudinal member comprising generally longitudinal extending fibers and having a uniform cross-section, the longitudinal member having bending and axial elasticity; and
at least two bone anchoring elements, each anchoring element having a shaft for anchoring in the bone and a receiving part for connection with the longitudinal member.
9. The stabilization device of claim 8 , wherein the receiving part comprises a recess for receiving the longitudinal member, the cross-section of the part of the recess receiving the longitudinal member being different from the cross section of the longitudinal member.
10. A method of manufacturing a longitudinal member for use in spinal or trauma surgery, the method comprising:
extruding at least one biocompatible polymer material to form an extruded member having a uniform cross-section;
wherein the extruded member comprises generally longitudinal extending fibers; and
wherein the extruded member comprises bending and axial elasticity.
11. The method of claim 10 , wherein the biocompatible polymer material is a polymer on the basis of any one of polyurethane, polycarbonateurethane and silicone.
12. A method of using a stabilization device for vertebrae or bone parts, the method comprising:
attaching a first bone anchoring element to a first bone part or vertebrae;
attaching a second bone anchoring element to a second bone part or vertebrae;
attaching a longitudinal member to the first bone anchoring element, the longitudinal member comprising generally longitudinal extending fibers and having a uniform cross-section, the longitudinal member having bending and axial elasticity; and
attaching the longitudinal member to the second bone anchoring element.
13. The method of claim 12 , wherein any one of attaching the longitudinal member to the first bone anchoring element and attaching the longitudinal member to the second bone anchoring element comprises:
inserting an end portion of the longitudinal member in a recess of a receiving part coupled to any one of the first bone anchoring element and the second bone anchoring element; and
securing the first end portion of the longitudinal member in the recess.
14. The method of claim 13 , wherein a cross-sectional shape of the recess is different from the cross-section of the longitudinal member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/493,835 US20120277797A1 (en) | 2006-05-16 | 2012-06-11 | Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US80098606P | 2006-05-16 | 2006-05-16 | |
EP06010070A EP1857065B1 (en) | 2006-05-16 | 2006-05-16 | Longitudinal member for use in spinal or trauma surgery |
EP06010070.8 | 2006-05-16 | ||
US11/749,395 US8216274B2 (en) | 2006-05-16 | 2007-05-16 | Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member |
US13/493,835 US20120277797A1 (en) | 2006-05-16 | 2012-06-11 | Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/749,395 Continuation US8216274B2 (en) | 2006-05-16 | 2007-05-16 | Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member |
Publications (1)
Publication Number | Publication Date |
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US20120277797A1 true US20120277797A1 (en) | 2012-11-01 |
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Application Number | Title | Priority Date | Filing Date |
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US11/749,395 Expired - Fee Related US8216274B2 (en) | 2006-05-16 | 2007-05-16 | Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member |
US13/493,835 Abandoned US20120277797A1 (en) | 2006-05-16 | 2012-06-11 | Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member |
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Application Number | Title | Priority Date | Filing Date |
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US11/749,395 Expired - Fee Related US8216274B2 (en) | 2006-05-16 | 2007-05-16 | Longitudinal member for use in spinal or trauma surgery and stabilization device with such a longitudinal member |
Country Status (6)
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US (2) | US8216274B2 (en) |
EP (1) | EP1857065B1 (en) |
CN (1) | CN101073512B (en) |
DE (1) | DE602006016407D1 (en) |
ES (1) | ES2351157T3 (en) |
TW (1) | TWI398237B (en) |
Families Citing this family (80)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7833250B2 (en) | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
US10729469B2 (en) | 2006-01-09 | 2020-08-04 | Roger P. Jackson | Flexible spinal stabilization assembly with spacer having off-axis core member |
US8353932B2 (en) | 2005-09-30 | 2013-01-15 | Jackson Roger P | Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member |
US7862587B2 (en) | 2004-02-27 | 2011-01-04 | Jackson Roger P | Dynamic stabilization assemblies, tool set and method |
US10258382B2 (en) | 2007-01-18 | 2019-04-16 | Roger P. Jackson | Rod-cord dynamic connection assemblies with slidable bone anchor attachment members along the cord |
US8292926B2 (en) | 2005-09-30 | 2012-10-23 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
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US7621918B2 (en) | 2004-11-23 | 2009-11-24 | Jackson Roger P | Spinal fixation tool set and method |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
US7776067B2 (en) | 2005-05-27 | 2010-08-17 | Jackson Roger P | Polyaxial bone screw with shank articulation pressure insert and method |
US8092500B2 (en) | 2007-05-01 | 2012-01-10 | Jackson Roger P | Dynamic stabilization connecting member with floating core, compression spacer and over-mold |
US7766915B2 (en) | 2004-02-27 | 2010-08-03 | Jackson Roger P | Dynamic fixation assemblies with inner core and outer coil-like member |
US8366753B2 (en) | 2003-06-18 | 2013-02-05 | Jackson Roger P | Polyaxial bone screw assembly with fixed retaining structure |
US8936623B2 (en) | 2003-06-18 | 2015-01-20 | Roger P. Jackson | Polyaxial bone screw assembly |
US7967850B2 (en) | 2003-06-18 | 2011-06-28 | Jackson Roger P | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
US7527638B2 (en) | 2003-12-16 | 2009-05-05 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal fixation element placement |
US7179261B2 (en) | 2003-12-16 | 2007-02-20 | Depuy Spine, Inc. | Percutaneous access devices and bone anchor assemblies |
US11419642B2 (en) | 2003-12-16 | 2022-08-23 | Medos International Sarl | Percutaneous access devices and bone anchor assemblies |
US7160300B2 (en) | 2004-02-27 | 2007-01-09 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
US8152810B2 (en) | 2004-11-23 | 2012-04-10 | Jackson Roger P | Spinal fixation tool set and method |
WO2005092218A1 (en) | 2004-02-27 | 2005-10-06 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
US11241261B2 (en) | 2005-09-30 | 2022-02-08 | Roger P Jackson | Apparatus and method for soft spinal stabilization using a tensionable cord and releasable end structure |
US7651502B2 (en) | 2004-09-24 | 2010-01-26 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
US9216041B2 (en) | 2009-06-15 | 2015-12-22 | Roger P. Jackson | Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts |
US9980753B2 (en) | 2009-06-15 | 2018-05-29 | Roger P Jackson | pivotal anchor with snap-in-place insert having rotation blocking extensions |
US9393047B2 (en) | 2009-06-15 | 2016-07-19 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock |
US9168069B2 (en) | 2009-06-15 | 2015-10-27 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer |
WO2006057837A1 (en) | 2004-11-23 | 2006-06-01 | Jackson Roger P | Spinal fixation tool attachment structure |
US8444681B2 (en) | 2009-06-15 | 2013-05-21 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert |
US7901437B2 (en) | 2007-01-26 | 2011-03-08 | Jackson Roger P | Dynamic stabilization member with molded connection |
US8273086B2 (en) * | 2005-03-24 | 2012-09-25 | Depuy Spine, Inc. | Low profile spinal tethering devices |
US8105368B2 (en) | 2005-09-30 | 2012-01-31 | Jackson Roger P | Dynamic stabilization connecting member with slitted core and outer sleeve |
GB0521582D0 (en) | 2005-10-22 | 2005-11-30 | Depuy Int Ltd | An implant for supporting a spinal column |
GB0600662D0 (en) | 2006-01-13 | 2006-02-22 | Depuy Int Ltd | Spinal support rod kit |
US8348952B2 (en) | 2006-01-26 | 2013-01-08 | Depuy International Ltd. | System and method for cooling a spinal correction device comprising a shape memory material for corrective spinal surgery |
EP2088945A4 (en) | 2006-12-08 | 2010-02-17 | Roger P Jackson | Tool system for dynamic spinal implants |
US8366745B2 (en) | 2007-05-01 | 2013-02-05 | Jackson Roger P | Dynamic stabilization assembly having pre-compressed spacers with differential displacements |
US8475498B2 (en) | 2007-01-18 | 2013-07-02 | Roger P. Jackson | Dynamic stabilization connecting member with cord connection |
US8012177B2 (en) | 2007-02-12 | 2011-09-06 | Jackson Roger P | Dynamic stabilization assembly with frusto-conical connection |
EP1972289B1 (en) | 2007-03-23 | 2018-10-17 | coLigne AG | Elongated stabilization member and bone anchor useful in bone and especially spinal repair processes |
US10383660B2 (en) | 2007-05-01 | 2019-08-20 | Roger P. Jackson | Soft stabilization assemblies with pretensioned cords |
CA2690038C (en) | 2007-05-31 | 2012-11-27 | Roger P. Jackson | Dynamic stabilization connecting member with pre-tensioned solid core |
US8911477B2 (en) | 2007-10-23 | 2014-12-16 | Roger P. Jackson | Dynamic stabilization member with end plate support and cable core extension |
GB0720762D0 (en) | 2007-10-24 | 2007-12-05 | Depuy Spine Sorl | Assembly for orthopaedic surgery |
US9232968B2 (en) | 2007-12-19 | 2016-01-12 | DePuy Synthes Products, Inc. | Polymeric pedicle rods and methods of manufacturing |
FR2927791B1 (en) * | 2008-02-26 | 2011-02-18 | Clariance | ARTICULAR PROSTHESIS POSTERIEURE LUMBAR WITH ROTULE |
EP2113216B1 (en) * | 2008-04-28 | 2012-05-30 | Biedermann Technologies GmbH & Co. KG | Rod-shaped element for spinal stabilization and method for producing the same |
DE602008004213D1 (en) | 2008-05-06 | 2011-02-10 | Biedermann Motech Gmbh | Rod-shaped implant, in particular for the dynamic stabilization of the spine |
CA2739997C (en) | 2008-08-01 | 2013-08-13 | Roger P. Jackson | Longitudinal connecting member with sleeved tensioned cords |
CH699333A1 (en) | 2008-08-11 | 2010-02-15 | Sepitec Foundation | Connecting rod for a stabilization assembly and stabilization arrangement with at least one such connecting rod. |
US8372120B2 (en) | 2009-05-20 | 2013-02-12 | Spine Wave, Inc. | Multi-axial cross connector |
US8998959B2 (en) | 2009-06-15 | 2015-04-07 | Roger P Jackson | Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert |
CN103826560A (en) | 2009-06-15 | 2014-05-28 | 罗杰.P.杰克逊 | Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet |
US11229457B2 (en) | 2009-06-15 | 2022-01-25 | Roger P. Jackson | Pivotal bone anchor assembly with insert tool deployment |
US9668771B2 (en) | 2009-06-15 | 2017-06-06 | Roger P Jackson | Soft stabilization assemblies with off-set connector |
US9320543B2 (en) * | 2009-06-25 | 2016-04-26 | DePuy Synthes Products, Inc. | Posterior dynamic stabilization device having a mobile anchor |
KR101697492B1 (en) * | 2009-07-16 | 2017-01-18 | 스파인세이브 아게 | Anchorage arrangement for a connecting rod for the stabilization of the spine |
WO2011043805A1 (en) | 2009-10-05 | 2011-04-14 | Roger Jackson P | Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit |
US9144447B2 (en) | 2009-10-14 | 2015-09-29 | K2M, Inc. | Surgical rod scorer and method of use of the same |
US8506603B2 (en) * | 2009-10-14 | 2013-08-13 | K2M, Inc. | Surgical rod scorer and method of use of the same |
US20110152937A1 (en) * | 2009-12-22 | 2011-06-23 | Warsaw Orthopedic, Inc. | Surgical Implants for Selectively Controlling Spinal Motion Segments |
US9445844B2 (en) | 2010-03-24 | 2016-09-20 | DePuy Synthes Products, Inc. | Composite material posterior dynamic stabilization spring rod |
JP2013540468A (en) | 2010-09-08 | 2013-11-07 | ロジャー・ピー・ジャクソン | Dynamic fixing member having an elastic part and an inelastic part |
DE102010041264A1 (en) | 2010-09-23 | 2012-03-29 | Aces Gmbh | Dynamic stabilization device for the spine |
GB2502449A (en) | 2010-11-02 | 2013-11-27 | Roger P Jackson | Polyaxial bone anchor with pop-on shank and pivotable retainer |
JP5865479B2 (en) | 2011-03-24 | 2016-02-17 | ロジャー・ピー・ジャクソン | Multiaxial bone anchor with compound joint and pop-mounted shank |
DE102012202749A1 (en) | 2012-02-22 | 2013-08-22 | Aces Gmbh | Dynamic stabilization device for bone e.g. spinal column, has deformable regions that are arranged in form of loop, so that sides of loop surround bone in bone quiescent state |
DE102012202750A1 (en) | 2012-02-22 | 2013-08-22 | Aces Gmbh | Dynamic stabilization device for treating degenerative diseases of spinal column, has support- and mating surfaces formed for clamping by load of spring element, and retaining elements movably mounted against each other in direction |
WO2014005236A1 (en) * | 2012-07-05 | 2014-01-09 | Spinesave Ag | Elastic rod having different degrees of stiffness for the surgical treatment of the spine |
US8911478B2 (en) | 2012-11-21 | 2014-12-16 | Roger P. Jackson | Splay control closure for open bone anchor |
US10058354B2 (en) | 2013-01-28 | 2018-08-28 | Roger P. Jackson | Pivotal bone anchor assembly with frictional shank head seating surfaces |
US8852239B2 (en) | 2013-02-15 | 2014-10-07 | Roger P Jackson | Sagittal angle screw with integral shank and receiver |
US9566092B2 (en) | 2013-10-29 | 2017-02-14 | Roger P. Jackson | Cervical bone anchor with collet retainer and outer locking sleeve |
US9717533B2 (en) | 2013-12-12 | 2017-08-01 | Roger P. Jackson | Bone anchor closure pivot-splay control flange form guide and advancement structure |
US9451993B2 (en) | 2014-01-09 | 2016-09-27 | Roger P. Jackson | Bi-radial pop-on cervical bone anchor |
US10064658B2 (en) | 2014-06-04 | 2018-09-04 | Roger P. Jackson | Polyaxial bone anchor with insert guides |
US9597119B2 (en) | 2014-06-04 | 2017-03-21 | Roger P. Jackson | Polyaxial bone anchor with polymer sleeve |
US10548639B2 (en) * | 2015-04-24 | 2020-02-04 | K2M, Inc. | Tethering screw system |
EP3437576B1 (en) * | 2017-08-03 | 2022-02-09 | Biedermann Technologies GmbH & Co. KG | Stabilization device for bones or vertebrae |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6280474B1 (en) * | 1997-01-09 | 2001-08-28 | Neucoll, Inc. | Devices for tissue repair and methods for preparation and use thereof |
US20050277922A1 (en) * | 2004-06-09 | 2005-12-15 | Trieu Hai H | Systems and methods for flexible spinal stabilization |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4653481A (en) * | 1985-07-24 | 1987-03-31 | Howland Robert S | Advanced spine fixation system and method |
FI81498C (en) | 1987-01-13 | 1990-11-12 | Biocon Oy | SURGICAL MATERIAL OCH INSTRUMENT. |
JP2619760B2 (en) * | 1991-12-25 | 1997-06-11 | グンゼ株式会社 | Bone treatment device and method for producing the same |
US5545165A (en) * | 1992-10-09 | 1996-08-13 | Biedermann Motech Gmbh | Anchoring member |
FR2697743B1 (en) * | 1992-11-09 | 1995-01-27 | Fabrication Mat Orthopedique S | Spinal osteosynthesis device applicable in particular to degenerative vertebrae. |
DE59310397D1 (en) * | 1993-07-02 | 2009-07-09 | Synthes Gmbh | Posterior spine implant |
US6964665B2 (en) * | 2000-12-29 | 2005-11-15 | Thomas James C | Vertebral alignment system |
US6652526B1 (en) * | 2001-10-05 | 2003-11-25 | Ruben P. Arafiles | Spinal stabilization rod fastener |
DE50300788D1 (en) * | 2002-05-21 | 2005-08-25 | Spinelab Gmbh Wabern | Elastic stabilization system for spinal columns |
WO2004096066A2 (en) * | 2003-04-25 | 2004-11-11 | Kitchen Michael S | Spinal curvature correction device |
US6986771B2 (en) * | 2003-05-23 | 2006-01-17 | Globus Medical, Inc. | Spine stabilization system |
US7794476B2 (en) | 2003-08-08 | 2010-09-14 | Warsaw Orthopedic, Inc. | Implants formed of shape memory polymeric material for spinal fixation |
US20050203513A1 (en) * | 2003-09-24 | 2005-09-15 | Tae-Ahn Jahng | Spinal stabilization device |
ES2269957T3 (en) | 2003-10-31 | 2007-04-01 | Spinelab Ag | MECHANISM OF CLOSURE OF PEDICULAR SCREWS DPARA THE FIXATION OF ELASTIC RODS. |
US7491208B2 (en) * | 2005-04-28 | 2009-02-17 | Warsaw Orthopedic, Inc. | Instrument and method for guiding surgical implants and instruments during surgery |
-
2006
- 2006-05-16 DE DE602006016407T patent/DE602006016407D1/en active Active
- 2006-05-16 EP EP06010070A patent/EP1857065B1/en not_active Not-in-force
- 2006-05-16 ES ES06010070T patent/ES2351157T3/en active Active
-
2007
- 2007-05-11 CN CN2007101029219A patent/CN101073512B/en not_active Expired - Fee Related
- 2007-05-11 TW TW096116732A patent/TWI398237B/en not_active IP Right Cessation
- 2007-05-16 US US11/749,395 patent/US8216274B2/en not_active Expired - Fee Related
-
2012
- 2012-06-11 US US13/493,835 patent/US20120277797A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6280474B1 (en) * | 1997-01-09 | 2001-08-28 | Neucoll, Inc. | Devices for tissue repair and methods for preparation and use thereof |
US20050277922A1 (en) * | 2004-06-09 | 2005-12-15 | Trieu Hai H | Systems and methods for flexible spinal stabilization |
Also Published As
Publication number | Publication date |
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ES2351157T3 (en) | 2011-02-01 |
EP1857065B1 (en) | 2010-08-25 |
CN101073512B (en) | 2011-02-16 |
EP1857065A1 (en) | 2007-11-21 |
US20070270843A1 (en) | 2007-11-22 |
TWI398237B (en) | 2013-06-11 |
TW200744524A (en) | 2007-12-16 |
DE602006016407D1 (en) | 2010-10-07 |
US8216274B2 (en) | 2012-07-10 |
CN101073512A (en) | 2007-11-21 |
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