US20040073307A1
Expired / Lapsed
US
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Intervertebral prosthesis
Assignee: Link Spine Group Inc
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Filing: 2003-01-22
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Granted: —
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Expires: 2023-01-22
Abstract
Abstract Intervertebral prosthesis ( 10 ) with at least one cover plate ( 11 ) which bears on a vertebral body ( 1 ) and is to be firmly connected thereto. In order to ensure that the prosthesis ( 10 ), during its insertion or during its lifetime, does not contribute to a protruding bone margin ( 5 ) breaking off, the cover plate ( 11 ) is provided with a bulge ( 12 ) corresponding to the depression ( 4 ) and/or with a bevel, a shortened end or rounded end ( 13 ).
Inventors
- 👤 Arnold Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2/4425; A61F2/30767; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/3023; A61F2002/30316; A61F2002/30329; A61F2002/30383; A61F2002/30387; A61F2002/30433; A61F2002/30535; A61F2002/30576; A61F2002/30578; A61F2002/30604; A61F2002/30616; A61F2002/30621; A61F2002/30649; A61F2002/3065; A61F2/30721; A61F2/30734; A61F2002/30736; A61F2/30771; A61F2002/30841; A61F2002/443; A61F2220/00; A61F2220/0025; A61F2220/0041; A61F2230/00; A61F2230/0063; A61F2230/0069
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
67 words
1 . Intervertebral prosthesis with at least one cover plate ( 11 , 19 ) which bears on a vertebral body ( 1 , 2 ) and is to be connected thereto, characterized in that the cover plate surface directed toward the vertebral body ( 1 ) has a bulge ( 12 ) protruding beyond the level of adaptation to the normal shape of the vertebral body.
Claim 2
Dependent Claim
67 words
1 . Intervertebral prosthesis with at least one cover plate ( 11 , 19 ) which bears on a vertebral body ( 1 , 2 ) and is to be connected thereto, characterized in that the cover plate surface directed toward the vertebral body ( 1 ) has a bulge ( 12 ) protruding beyond the level of adaptation to the normal shape of the vertebral body.
Claim 3
Dependent Claim
26 words
2 . Intervertebral prosthesis according to claim 1 , characterized in that the bulge ( 12 ) has a smaller extent than the cover plate surface.
Claim 4
Dependent Claim
36 words
3 . Intervertebral prosthesis according to claim 2 , characterized in that the bulge ( 12 ) lies nearer to the dorsal margin ( 13 ) of the cover plate surface than to its ventral margin.
Claim 5
Dependent Claim
32 words
4 . Intervertebral prosthesis according to claim 3 , characterized in that the bulge ( 12 ) reaches as far as the dorsal edge ( 13 ) of the cover plate surface.
Claim 6
Dependent Claim
67 words
5 . Intervertebral prosthesis in particular according to claim 4 , with at least one cover plate ( 11 , 14 ) which bears on a vertebral body ( 1 ) and is to be connected thereto, characterized in that a bevel or rounding ( 13 , 16 ) is provided at the margin of the cover plate surface directed toward the vertebral body ( 1 ).
Claim 7
Dependent Claim
29 words
6 . Intervertebral prosthesis according to claim 5 , characterized in that the bevel or rounding ( 13 , 16 ) is provided at least on the dorsal side.
Claim 8
Dependent Claim
40 words
7 . Intervertebral prosthesis according to claim 5 or 6 , characterized in that the bevel or rounding ( 13 , 16 ) extends over at least 5% of the dimension of the cover plate surface in the A-P direction.
Claim 9
Dependent Claim
36 words
8 . Intervertebral prosthesis according to one of claims 5 to 7 , characterized in that the bevel or rounding ( 13 ) is part of a bulge ( 12 ) according to claim 4 .
Claim 10
Dependent Claim
91 words
9 . Intervertebral prosthesis in particular according to one of claims 1 to 8 , with at least one cover plate ( 14 ) which bears on a vertebral body ( 1 ) and is to be connected thereto and which has teeth ( 17 ) intended to penetrate into the vertebral body ( 1 ), characterized in that the distance of the teeth ( 17 ) from the dorsal edge of the cover plate ( 14 ) is at least 20% of the cover plate size in the A-P direction.
Claim 11
Dependent Claim
37 words
10 . Intervertebral prosthesis according to claim 9 , characterized in that at least one of the teeth ( 17 ) arranged near the dorsal edge and designed to be self-cutting extends substantially in a sagittal direction.
Claim 12
Dependent Claim
35 words
11 . Intervertebral prosthesis according to claim 9 , characterized in that at least one of the teeth arranged near the dorsal edge has a lower height than teeth arranged further in the ventral direction.
Claim 13
Dependent Claim
52 words
12 . Intervertebral prosthesis according to one of claims 1 to 11 , characterized in that the bulge ( 12 ) or bevel or rounding ( 13 , 16 ) is formed by a separate attachment part ( 20 ) connected, or to be connected, to the cover plate ( 19 ).
Claim 14
Dependent Claim
40 words
13 . Intervertebral prosthesis according to claim 12 , characterized in that a plurality of different attachment parts ( 20 ) are provided, and a small number of different cover plates ( 19 ) which can be connected to them.
Claim 15
Dependent Claim
60 words
14 . Set of intervertebral prostheses which comprise at least one cover plate ( 11 , 19 ), with a substantially flat cover plate surface, which bears on a vertebral body ( 1 ) and is to be connected thereto, characterized in that it comprises at least one intervertebral prosthesis whose cover plate surface has a bulge ( 20 ).
Claim 16
Dependent Claim
60 words
14 . Set of intervertebral prostheses which comprise at least one cover plate ( 11 , 19 ), with a substantially flat cover plate surface, which bears on a vertebral body ( 1 ) and is to be connected thereto, characterized in that it comprises at least one intervertebral prosthesis whose cover plate surface has a bulge ( 20 ).
Claim 17
Dependent Claim
58 words
15 . Set of intervertebral prostheses which comprise at least one cover plate ( 11 , 19 ) which has a dorsal margin and which bears on a vertebral body ( 1 ) and is to be connected thereto, characterized in that it comprises at least one intervertebral prosthesis on whose cover plate the dorsal margin is shortened.
Claim 18
Dependent Claim
58 words
15 . Set of intervertebral prostheses which comprise at least one cover plate ( 11 , 19 ) which has a dorsal margin and which bears on a vertebral body ( 1 ) and is to be connected thereto, characterized in that it comprises at least one intervertebral prosthesis on whose cover plate the dorsal margin is shortened.
References Cited (Backward Citations)
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