Intersomatic vertebral column implant
First Claim
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1. A hollow tubular intersomatic implant for stabilization of the vertebral column, the implant comprising:
- a peripheral wall having a longitudinal axis, and delimiting an internal cavity where the peripheral wall includes communicating holes to provide communication between the exterior and said internal cavity, the internal cavity having a height extending along the longitudinal axis which is larger than the diameter of the communicating holes, wherein the peripheral wall comprises;
(a) a generally circular cross-section external surface,(b) two solid side surfaces and top and bottom surfaces where the top and bottom surfaces include said communicating holes, and(c) at least one annular external rib to prevent retrograde movement where the annular external rib is substantially perpendicular to said longitudinal axis.
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Abstract
The hollow tubular implant of the invention comprises an internal cavity delimited by a peripheral wall open at its first end and having a generally circular cross-section external surface. Two side surfaces are solid and top and bottom surfaces have communicating holes in them. Annular external ribs prevent retrograde movement and rotation of the implant when inserted between two adjacent vertebrae. The implant achieves good fastening together of the two vertebrae and fusion thereof by means of a bone graft inserted in the implant before fitting.
334 Citations
17 Claims
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1. A hollow tubular intersomatic implant for stabilization of the vertebral column, the implant comprising:
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a peripheral wall having a longitudinal axis, and delimiting an internal cavity where the peripheral wall includes communicating holes to provide communication between the exterior and said internal cavity, the internal cavity having a height extending along the longitudinal axis which is larger than the diameter of the communicating holes, wherein the peripheral wall comprises; (a) a generally circular cross-section external surface, (b) two solid side surfaces and top and bottom surfaces where the top and bottom surfaces include said communicating holes, and (c) at least one annular external rib to prevent retrograde movement where the annular external rib is substantially perpendicular to said longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hollow tubular intersomatic implant for stabilization of the vertebral column, the implant comprising:
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a peripheral wall having a longitudinal axis, and delimiting an internal cavity where the peripheral wall includes communicating holes to provide communication between the exterior and said internal cavity, the internal cavity having a height extending along the longitudinal axis which is larger than the diameter of the communicating holes, wherein the peripheral wall comprises; (a) a generally circular cross-section external surface, (b) two solid side surfaces and top and bottom surfaces where the top and bottom surfaces include said communicating holes, and (c) at least one annular external rib to prevent retrograde movement where the annular external rib is substantially perpendicular to said longitudinal axis; wherein said two solid side surfaces do not have annular external ribs. - View Dependent Claims (10)
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11. A hollow tubular intersomatic implant for stabilization of the vertebral column, the implant comprising:
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a peripheral wall delimiting an internal cavity where the peripheral wall includes communicating holes, wherein the peripheral wall comprises; (a) a generally circular cross-section external surface, (b) two solid side surfaces and top and bottom surfaces where the top and bottom surfaces include said communicating holes, (c) at least one annular external rib to prevent retrograde movement; and (d) means for preventing rotation of the hollow tubular intersomatic implant, the rotation preventing means having at least one tooth projecting from at least one of said annular external ribs.
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12. A hollow tubular intersomatic implant for stabilization of the vertebral column, the implant comprising:
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a peripheral wall delimiting an internal cavity where the peripheral wall includes communicating holes and an end, wherein the peripheral wall comprises; (a) a generally circular cross-section external surface, (b) two solid side surfaces and top and bottom surfaces where the top and bottom surfaces include said communicating holes, (c) at least one annular external rib to prevent retrograde movement, and (d) a threaded axial hole for fitting an inserting tool, and a transverse bearing wall joined to said end of said peripheral wall where the transverse bearing wall has a plurality of external relief means for preventing rotation of the inserting tool relative to the implant. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification