US20120041495A9 - Bone Screw - Google Patents
Bone Screw Download PDFInfo
- Publication number
- US20120041495A9 US20120041495A9 US12/982,728 US98272810A US2012041495A9 US 20120041495 A9 US20120041495 A9 US 20120041495A9 US 98272810 A US98272810 A US 98272810A US 2012041495 A9 US2012041495 A9 US 2012041495A9
- Authority
- US
- United States
- Prior art keywords
- bore
- bone screw
- head
- bounding edge
- screw apparatus
- 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
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Classifications
-
- 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
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- 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
- 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
- A61B17/7038—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other to a different extent in different directions, e.g. within one plane only
-
- 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
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7067—Devices bearing against one or more spinous processes and also attached to another part of the spine; Tools therefor
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
Definitions
- the invention relates to a bone screw having a threaded section and a head and a receiving part at the head end for receiving a rod to be connected to the bone screw, the receiving part possessing an open first bore and a substantially U-shaped cross-section having two free legs provided with a thread and a second bore at the end opposite to the first bore, whose diameter is greater than that of the threaded section and smaller than that of the head and which forms the seat for the head, and a nut or screw working together with the thread.
- Such a bone screw is disclosed, for example, in U.S. Pat. No. 5,672,176.
- the head is of spherical segment-shaped construction.
- the bottom of the first bore adjacent to the second bore is likewise of spherical segment-shaped construction so that the spherical head lies on this spherical section.
- the plane going through the bounding edge is oriented at right angles to the axis of the first bore and the mid-point of the second bore coincides with the axis of the first bore.
- the threaded section possessing the head is pivotable in a predetermined angle of generally up to 25° about the axis of the first bore so that even after screwing the threaded section into a vertebral segment orientation of the receiving part receiving a rod is possible.
- the size of the pivot angle is limited to the extent that the second bore as a function of the diameter of the head must not exceed d certain size so that the head still has an adequate hold in the receiving part.
- the aim of the invention is to provide a bone screw which permits a larger pivot angle.
- This task is solved by a bone screw having a screw member that possess a threaded section, a head and a receiving part at the head end for receiving a rod to be connected to the bone screw.
- the receiving part has an open first bore and a substantially U- shaped cross-section having two free legs provided with threads, a second bore at the end opposite the first bore having a diameter greater than the diameter of the threaded section and smaller than the diameter of the head, and a seat for the head and a nut or screw acting together with the thread.
- the edge bounding the free end of the second bore is asymmetrical.
- FIG. 1 depicts a side elevation of a first embodiment of the invention, partly in sectional representation.
- FIG. 2 shows an enlarged detail of FIG. 1 .
- FIG. 3 depicts a side elevation, partly in sectional representation, of a second embodiment of the invention.
- FIG. 4 depicts a corresponding representation of a further embodiment of the invention.
- the bone screw includes a screw member proper 1 having a threaded section 2 and a head 3 .
- the head is formed in the shape of a segment of a sphere in the region adjoining the threaded section. Coaxial with the thread axis and on the end opposite to the threaded section 2 the head possesses a recess 4 for engagement with a socket screw key.
- the bone screw further comprises a cylindrically constructed receiving part 5 . At one end this has a first bore 6 of axially symmetrical construction. On the opposite end a second bore 7 is provided whose diameter is greater than that of the threaded section 2 and smaller than that of the head 3 . On the end opposite to the second bore the first bore is open and its diameter is of such a size that that the screw member 1 can he guided through the open end by its threaded section 2 going through this bore and by the head going as far as the bottom of the first bore.
- the bottom of the first bore is constructed as a spherically shaped region towards the open end, the radius being substantially equal to the radius of the spherical segment-shaped section of the head 3 .
- the receiving part 5 has a U-shaped recess 8 arranged symmetrically relative to the center of the part whose bottom is directed towards the second bore 7 and whose two side legs 13 , 14 extend to the open end directed towards the first bore 6 .
- a thread for engagement with a screw member constructed as a nut or screw is provided at the free end of the legs 13 , 14 .
- the nut or screw serves to fix a rod to be inserted into the U-shaped recess 8 , it being possible for the nut or screw to act on the rod directly or via a pressure member.
- a circular countersink 10 is made in the edge between the opening plane 11 of the second bore and the edge 12 of the first bore.
- the interior of the receiving part 5 is constructed as in the first embodiment.
- the opening plane 11 which bounds the second bore 7 , in this embodiment is inclined at a predetermined angle ⁇ to the plane bounded by the second bore 7 so that the normal to this plane 11 and the axis of symmetry of the first bore 15 enclose the angle of inclination.
- this angle is 15° as an exemplified embodiment.
- the screw member 1 ⁇ pivotable in the direction shown by an angle to the axis of symmetry of the-first-bore which is substantially greater than the angle which is achievable in the usual mode of construction.
- the countersink or chamfer is selected in such a way that in each case a small peripheral section still remains which still belongs to the spherical seat.
- the mid-point of the second bore is constructed offset to the side to a small extent, for example by 0.5 mm, relative to the axis of symmetry of the first bore.
- This lateral offsetting in turn produces the result that the head is held in the mounting formed by the spherically constructed bottom but a greater pivot width is achieved in a side direction.
- the spherical bottom of the first bore 6 is constructed in each case as an integral component of the receiving part 5 .
- the spherical bottom can also be provided either in a mounting part introduced through the first bore 6 or in a mounting part introduced through the second bore 7 .
- the invention is then used in a corresponding manner to the end that the receiving part together with the insert piece is regarded as one member and the measures described above are taken on this piece assembled in this way.
- the members forming the bone screw are preferably made of titanium.
- the edge bounding the free end of the second bore viewed relative to the axis of the first bore is of symmetrical construction.
- the asymmetry is achieved in that the screw 1 has a recess or countersink 16 on its neck engaging on the sphere or the spherical segment so that in the manner shown in FIG. 4 as in the exemplified embodiments previously described the enlarged pivot angle can be achieved.
Abstract
Description
- This application is a continuation of Ser. No. 10/763,431, filed Jan. 22, 2004, which is a continuation of Ser. No. 10/037,698, filed Nov. 9, 2001, now U.S. Pat. No. 6,736,820, the disclosures of which are incorporated herein by reference.
- The invention relates to a bone screw having a threaded section and a head and a receiving part at the head end for receiving a rod to be connected to the bone screw, the receiving part possessing an open first bore and a substantially U-shaped cross-section having two free legs provided with a thread and a second bore at the end opposite to the first bore, whose diameter is greater than that of the threaded section and smaller than that of the head and which forms the seat for the head, and a nut or screw working together with the thread.
- Such a bone screw is disclosed, for example, in U.S. Pat. No. 5,672,176. In the known bone screw the head is of spherical segment-shaped construction. The bottom of the first bore adjacent to the second bore is likewise of spherical segment-shaped construction so that the spherical head lies on this spherical section. The plane going through the bounding edge is oriented at right angles to the axis of the first bore and the mid-point of the second bore coincides with the axis of the first bore. By this means it is achieved that the threaded section possessing the head is pivotable in a predetermined angle of generally up to 25° about the axis of the first bore so that even after screwing the threaded section into a vertebral segment orientation of the receiving part receiving a rod is possible. At the same time, the size of the pivot angle is limited to the extent that the second bore as a function of the diameter of the head must not exceed d certain size so that the head still has an adequate hold in the receiving part.
- The use of such bone screws is something of a problem in the region of cervical vertebrae. In this case, due to the small dimensions of the cervical vertebrae, it is necessary that the screws must always be pivoted to one side and upwards, a greater degree of pivoting being necessary than is the case in the larger thoracic vertebrae and lumbar vertebrae.
- The aim of the invention is to provide a bone screw which permits a larger pivot angle. This task is solved by a bone screw having a screw member that possess a threaded section, a head and a receiving part at the head end for receiving a rod to be connected to the bone screw. The receiving part has an open first bore and a substantially U- shaped cross-section having two free legs provided with threads, a second bore at the end opposite the first bore having a diameter greater than the diameter of the threaded section and smaller than the diameter of the head, and a seat for the head and a nut or screw acting together with the thread. When viewed relative to the axis of the first bore, the edge bounding the free end of the second bore is asymmetrical.
- Refinements of the invention are identified in the more detailed embodiments described below.
- Further features and practical advantages of the invention emerge from the description of exemplified embodiments with reference to the figures.
-
FIG. 1 depicts a side elevation of a first embodiment of the invention, partly in sectional representation. -
FIG. 2 shows an enlarged detail ofFIG. 1 . -
FIG. 3 depicts a side elevation, partly in sectional representation, of a second embodiment of the invention. -
FIG. 4 depicts a corresponding representation of a further embodiment of the invention. - The bone screw includes a screw member proper 1 having a threaded
section 2 and ahead 3. The head is formed in the shape of a segment of a sphere in the region adjoining the threaded section. Coaxial with the thread axis and on the end opposite to the threadedsection 2 the head possesses a recess 4 for engagement with a socket screw key. - The bone screw further comprises a cylindrically constructed receiving part 5. At one end this has a first bore 6 of axially symmetrical construction. On the opposite end a second bore 7 is provided whose diameter is greater than that of the threaded
section 2 and smaller than that of thehead 3. On the end opposite to the second bore the first bore is open and its diameter is of such a size that that thescrew member 1 can he guided through the open end by its threadedsection 2 going through this bore and by the head going as far as the bottom of the first bore. The bottom of the first bore is constructed as a spherically shaped region towards the open end, the radius being substantially equal to the radius of the spherical segment-shaped section of thehead 3. Furthermore, the receiving part 5 has aU-shaped recess 8 arranged symmetrically relative to the center of the part whose bottom is directed towards the second bore 7 and whose twoside legs legs 13, 14 a thread for engagement with a screw member constructed as a nut or screw is provided. The nut or screw serves to fix a rod to be inserted into theU-shaped recess 8, it being possible for the nut or screw to act on the rod directly or via a pressure member. - In the embodiment shown in
FIGS. 1 and 2 , in the direction of the arrow 9, whose direction lies in a plane going through the axis of symmetry of the first bore and which is inclined to the axis of symmetry by a predetermined angle, acircular countersink 10 is made in the edge between theopening plane 11 of the second bore and theedge 12 of the first bore. - In this manner, as can be seen in the figures, it is achieved that the angle between the axis of the
screw member 1 and the axis of symmetry of the first bore is substantially enlarged by comparison with the angle otherwise attainable. At the same time the seat of thescrew member 1 in the receiving part is retained. - In the second embodiment shown in
FIG. 3 the interior of the receiving part 5 is constructed as in the first embodiment. Theopening plane 11, which bounds the second bore 7, in this embodiment is inclined at a predetermined angle α to the plane bounded by the second bore 7 so that the normal to thisplane 11 and the axis of symmetry of thefirst bore 15 enclose the angle of inclination. In the case shown this angle is 15° as an exemplified embodiment. In this version it is also achieved that thescrew member 1 α pivotable in the direction shown by an angle to the axis of symmetry of the-first-bore which is substantially greater than the angle which is achievable in the usual mode of construction. - Both in the embodiment shown in
FIG. 1 and the embodiment shown inFIG. 3 the countersink or chamfer is selected in such a way that in each case a small peripheral section still remains which still belongs to the spherical seat. - In a fourth embodiment which is not shown the mid-point of the second bore is constructed offset to the side to a small extent, for example by 0.5 mm, relative to the axis of symmetry of the first bore. This lateral offsetting in turn produces the result that the head is held in the mounting formed by the spherically constructed bottom but a greater pivot width is achieved in a side direction.
- In the exemplified embodiments described above four different approaches to a solution are presented. It is also possible to combine the individual approaches with one another; that is, for example, to combine the solution according to the first and second exemplified embodiments or one of the two with the third and/or fourth exemplified embodiment, or even all four exemplified embodiments in order to achieve, in this way, a still greater possibility for pivoting in at least one direction.
- In the exemplified embodiments described above the spherical bottom of the first bore 6 is constructed in each case as an integral component of the receiving part 5. In a modified embodiment, however, the spherical bottom can also be provided either in a mounting part introduced through the first bore 6 or in a mounting part introduced through the second bore 7. The invention is then used in a corresponding manner to the end that the receiving part together with the insert piece is regarded as one member and the measures described above are taken on this piece assembled in this way.
- The members forming the bone screw are preferably made of titanium.
- In the embodiment shown in
FIG. 4 the edge bounding the free end of the second bore viewed relative to the axis of the first bore is of symmetrical construction. The asymmetry is achieved in that thescrew 1 has a recess or countersink 16 on its neck engaging on the sphere or the spherical segment so that in the manner shown inFIG. 4 as in the exemplified embodiments previously described the enlarged pivot angle can be achieved.
Claims (17)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/982,728 US8864803B2 (en) | 2000-11-10 | 2010-12-30 | Bone screw |
US14/488,730 US9498256B2 (en) | 2000-11-10 | 2014-09-17 | Bone screw |
US15/299,189 US10058353B2 (en) | 2000-11-10 | 2016-10-20 | Bone screw |
US16/050,775 US11197694B2 (en) | 2000-11-10 | 2018-07-31 | Bone screw |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10055888A DE10055888C1 (en) | 2000-11-10 | 2000-11-10 | Bone screw, has connector rod receiving part with unsymmetrically arranged end bores |
DE10055888.7 | 2000-11-10 | ||
DE10065397.9 | 2000-12-27 | ||
DE10065397 | 2000-12-27 | ||
US10/037,698 US6736820B2 (en) | 2000-11-10 | 2001-11-09 | Bone screw |
US10/763,431 US8409260B2 (en) | 2000-11-10 | 2004-01-22 | Bone screw |
US11/319,427 US20060106383A1 (en) | 2000-11-10 | 2005-12-29 | Bone screw |
US12/982,728 US8864803B2 (en) | 2000-11-10 | 2010-12-30 | Bone screw |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/319,427 Continuation US20060106383A1 (en) | 2000-11-10 | 2005-12-29 | Bone screw |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/488,730 Continuation US9498256B2 (en) | 2000-11-10 | 2014-09-17 | Bone screw |
Publications (3)
Publication Number | Publication Date |
---|---|
US20110125195A1 US20110125195A1 (en) | 2011-05-26 |
US20120041495A9 true US20120041495A9 (en) | 2012-02-16 |
US8864803B2 US8864803B2 (en) | 2014-10-21 |
Family
ID=26007628
Family Applications (10)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/037,698 Expired - Lifetime US6736820B2 (en) | 2000-11-10 | 2001-11-09 | Bone screw |
US10/763,431 Active 2029-03-22 US8409260B2 (en) | 2000-11-10 | 2004-01-22 | Bone screw |
US11/291,920 Expired - Lifetime US7785354B2 (en) | 2000-11-10 | 2005-12-02 | Bone screw |
US11/319,427 Abandoned US20060106383A1 (en) | 2000-11-10 | 2005-12-29 | Bone screw |
US12/982,728 Expired - Lifetime US8864803B2 (en) | 2000-11-10 | 2010-12-30 | Bone screw |
US13/191,299 Expired - Fee Related US8945194B2 (en) | 2000-11-10 | 2011-07-26 | Bone screw |
US14/488,730 Expired - Lifetime US9498256B2 (en) | 2000-11-10 | 2014-09-17 | Bone screw |
US14/579,838 Expired - Lifetime US9566093B2 (en) | 2000-11-10 | 2014-12-22 | Bone screw |
US15/299,189 Expired - Fee Related US10058353B2 (en) | 2000-11-10 | 2016-10-20 | Bone screw |
US16/050,775 Expired - Lifetime US11197694B2 (en) | 2000-11-10 | 2018-07-31 | Bone screw |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/037,698 Expired - Lifetime US6736820B2 (en) | 2000-11-10 | 2001-11-09 | Bone screw |
US10/763,431 Active 2029-03-22 US8409260B2 (en) | 2000-11-10 | 2004-01-22 | Bone screw |
US11/291,920 Expired - Lifetime US7785354B2 (en) | 2000-11-10 | 2005-12-02 | Bone screw |
US11/319,427 Abandoned US20060106383A1 (en) | 2000-11-10 | 2005-12-29 | Bone screw |
Family Applications After (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/191,299 Expired - Fee Related US8945194B2 (en) | 2000-11-10 | 2011-07-26 | Bone screw |
US14/488,730 Expired - Lifetime US9498256B2 (en) | 2000-11-10 | 2014-09-17 | Bone screw |
US14/579,838 Expired - Lifetime US9566093B2 (en) | 2000-11-10 | 2014-12-22 | Bone screw |
US15/299,189 Expired - Fee Related US10058353B2 (en) | 2000-11-10 | 2016-10-20 | Bone screw |
US16/050,775 Expired - Lifetime US11197694B2 (en) | 2000-11-10 | 2018-07-31 | Bone screw |
Country Status (7)
Country | Link |
---|---|
US (10) | US6736820B2 (en) |
EP (1) | EP1205153B1 (en) |
JP (1) | JP4384827B2 (en) |
KR (1) | KR100776776B1 (en) |
AT (1) | ATE270074T1 (en) |
DE (2) | DE10055888C1 (en) |
TW (1) | TW546128B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120185003A1 (en) * | 2010-12-13 | 2012-07-19 | Lutz Biedermann | Bone anchoring device |
US20130165977A1 (en) * | 2011-12-23 | 2013-06-27 | Biedermann Technologies Gmbh & Co. Kg | Polyaxial bone anchoring device |
US9339304B2 (en) | 2011-10-27 | 2016-05-17 | Biedermann Technologies Gmbh & Co. Kg | High angulation polyaxial bone anchoring device |
US11832851B1 (en) | 2022-05-16 | 2023-12-05 | Warsaw Orthopedic, Inc. | Spinal implant system and methods of use |
Families Citing this family (289)
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US7322979B2 (en) * | 2000-03-15 | 2008-01-29 | Warsaw Orthopedic, Inc. | Multidirectional pivoting bone screw and fixation system |
US7833250B2 (en) | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
DE10055888C1 (en) | 2000-11-10 | 2002-04-25 | Biedermann Motech Gmbh | Bone screw, has connector rod receiving part with unsymmetrically arranged end bores |
US8377100B2 (en) | 2000-12-08 | 2013-02-19 | Roger P. Jackson | Closure for open-headed medical implant |
US6726689B2 (en) | 2002-09-06 | 2004-04-27 | Roger P. Jackson | Helical interlocking mating guide and advancement structure |
DE10115014A1 (en) * | 2001-03-27 | 2002-10-24 | Biedermann Motech Gmbh | anchoring element |
US10729469B2 (en) | 2006-01-09 | 2020-08-04 | Roger P. Jackson | Flexible spinal stabilization assembly with spacer having off-axis core member |
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 |
US7862587B2 (en) | 2004-02-27 | 2011-01-04 | Jackson Roger P | Dynamic stabilization assemblies, tool set and method |
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 |
DE10136129A1 (en) * | 2001-07-27 | 2003-02-20 | Biedermann Motech Gmbh | Bone screw and fastening tool for this |
US6974460B2 (en) | 2001-09-14 | 2005-12-13 | Stryker Spine | Biased angulation bone fixation assembly |
US8216243B2 (en) * | 2001-12-04 | 2012-07-10 | Synthes Usa, Llc | Headless compression screw with integrated reduction-compression instrument |
US7306603B2 (en) * | 2002-08-21 | 2007-12-11 | Innovative Spinal Technologies | Device and method for percutaneous placement of lumbar pedicle screws and connecting rods |
US8876868B2 (en) | 2002-09-06 | 2014-11-04 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
US8282673B2 (en) | 2002-09-06 | 2012-10-09 | Jackson Roger P | Anti-splay medical implant closure with multi-surface removal aperture |
US8257402B2 (en) | 2002-09-06 | 2012-09-04 | Jackson Roger P | Closure for rod receiving orthopedic implant having left handed thread removal |
US6716214B1 (en) | 2003-06-18 | 2004-04-06 | Roger P. Jackson | Polyaxial bone screw with spline capture connection |
US7621918B2 (en) | 2004-11-23 | 2009-11-24 | Jackson Roger P | Spinal fixation tool set and method |
US6964666B2 (en) * | 2003-04-09 | 2005-11-15 | Jackson Roger P | Polyaxial bone screw locking mechanism |
US8540753B2 (en) * | 2003-04-09 | 2013-09-24 | Roger P. Jackson | Polyaxial bone screw with uploaded threaded shank and method of assembly and use |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
US8257398B2 (en) * | 2003-06-18 | 2012-09-04 | Jackson Roger P | Polyaxial bone screw with cam capture |
US7776067B2 (en) | 2005-05-27 | 2010-08-17 | Jackson Roger P | Polyaxial bone screw with shank articulation pressure insert and method |
US8398682B2 (en) | 2003-06-18 | 2013-03-19 | 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 |
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US20120185003A1 (en) * | 2010-12-13 | 2012-07-19 | Lutz Biedermann | Bone anchoring device |
US9597120B2 (en) * | 2010-12-13 | 2017-03-21 | Biedermann Technologies Gmbh & Co. Kg | Bone anchoring device |
US9339304B2 (en) | 2011-10-27 | 2016-05-17 | Biedermann Technologies Gmbh & Co. Kg | High angulation polyaxial bone anchoring device |
US20130165977A1 (en) * | 2011-12-23 | 2013-06-27 | Biedermann Technologies Gmbh & Co. Kg | Polyaxial bone anchoring device |
US9445847B2 (en) * | 2011-12-23 | 2016-09-20 | Biedermann Technologies Gmbh & Co. Kg | Polyaxial bone anchoring device |
US9924974B2 (en) | 2011-12-23 | 2018-03-27 | Biedermann Technologies Gmbh & Co. Kg | Polyaxial bone anchoring device |
US11832851B1 (en) | 2022-05-16 | 2023-12-05 | Warsaw Orthopedic, Inc. | Spinal implant system and methods of use |
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US20020058942A1 (en) | 2002-05-16 |
US9498256B2 (en) | 2016-11-22 |
US20060084995A1 (en) | 2006-04-20 |
US10058353B2 (en) | 2018-08-28 |
ATE270074T1 (en) | 2004-07-15 |
JP4384827B2 (en) | 2009-12-16 |
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US20110125195A1 (en) | 2011-05-26 |
KR100776776B1 (en) | 2007-11-19 |
US20170164981A1 (en) | 2017-06-15 |
US20060106383A1 (en) | 2006-05-18 |
US20150196329A1 (en) | 2015-07-16 |
US6736820B2 (en) | 2004-05-18 |
US20120101532A1 (en) | 2012-04-26 |
EP1205153B1 (en) | 2004-06-30 |
US8864803B2 (en) | 2014-10-21 |
US20110066189A2 (en) | 2011-03-17 |
EP1205153A2 (en) | 2002-05-15 |
US8409260B2 (en) | 2013-04-02 |
US20190038320A1 (en) | 2019-02-07 |
US11197694B2 (en) | 2021-12-14 |
TW546128B (en) | 2003-08-11 |
JP2002168220A (en) | 2002-06-14 |
DE10055888C1 (en) | 2002-04-25 |
US20150094776A1 (en) | 2015-04-02 |
US9566093B2 (en) | 2017-02-14 |
US20040153077A1 (en) | 2004-08-05 |
US7785354B2 (en) | 2010-08-31 |
US8945194B2 (en) | 2015-02-03 |
DE50102723D1 (en) | 2004-08-05 |
KR20020036709A (en) | 2002-05-16 |
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