US20040143330A1
Expired / Lapsed
US
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Intervertebral cage and method of use
Assignee: DePuy Spine LLC
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Filing: 2003-09-04
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Granted: —
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Expires: 2023-09-04
Abstract
Abstract An intervertebral prosthesis for implantation between adjacent vertebrae of the human spine is shown. The prosthesis is formed as a unitary cage body configured and sized to be inserted between adjacent vertebrae in a single step implantation procedure. The cage body is banana shaped as viewed from above, the body having an exterior surface and an interior surface, the interior surface defining an internal recess for receiving cancellous bone material during an implantation procedure. The cage body can be formed as an interlinked mesh.
Inventors
- 👤 John Sazy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/4465; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7002; A61B17/701; A61B17/7032; A61F2/3094; A61F2/30965; A61F2/442; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30133; A61F2002/30199; A61F2002/30308; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2002/30604; A61F2002/30616; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30787; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0015; A61F2230/0063; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; Y; Y10; Y10S; Y10S623/00; Y10S623/902
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
57 words
1 . An intervertebral prosthesis for implantation between adjacent vertebrae of the human spine, comprising: a unitary body that is banana-shaped as viewed from above, the body having an exterior surface and an interior surface, the interior surface defining an interior recess; and wherein the unitary body includes upper and lower edges that each form smoothly-sloping surfaces.
Claim 2
Dependent Claim
57 words
1 . An intervertebral prosthesis for implantation between adjacent vertebrae of the human spine, comprising: a unitary body that is banana-shaped as viewed from above, the body having an exterior surface and an interior surface, the interior surface defining an interior recess; and wherein the unitary body includes upper and lower edges that each form smoothly-sloping surfaces.
Claim 3
Dependent Claim
39 words
2 . The intervertebral prosthesis of claim 1 , wherein the banana shape of the unitary body includes a front arc that has a first radius of curvature and a back arc that includes a second radius of curvature.
Claim 4
Dependent Claim
26 words
3 . The intervertebral prosthesis of claim 2 , wherein the first radius of curvature is equal to or less than the second radius of curvature.
Claim 5
Dependent Claim
23 words
4 . The intervertebral prosthesis of claim 3 , wherein the first radius of curvature is equal to the second radius of curvature.
Claim 6
Dependent Claim
23 words
5 . The intervertebral prosthesis of claim 3 , wherein the first radius of curvature is less than the second radius of curvature.
Claim 7
Dependent Claim
25 words
6 . The intervertebral prosthesis of claim 5 , wherein the first and the second radii of curvature extend from a single point of rotation.
Claim 8
Dependent Claim
21 words
7 . The intervertebral prosthesis of claim 2 , wherein the unitary body defines openings about a circumference of the body.
Claim 9
Dependent Claim
21 words
8 . The intervertebral prosthesis of claim 7 , wherein the openings are evenly spaced about the circumference of the body.
Claim 10
Dependent Claim
26 words
9 . The intervertebral prosthesis of claim 8 , wherein the upper and lower edges include bands that form a serpentine arrangement of an interlinked mesh.
Claim 11
Dependent Claim
15 words
10 . The intervertebral prosthesis of claim 8 , wherein the defined openings are quadrilaterals.
Claim 12
Dependent Claim
14 words
11 . The intervertebral prosthesis of claim 8 , wherein the quadrilaterals are parallelograms.
Claim 13
Dependent Claim
14 words
12 . The intervertebral prosthesis of claim 8 , wherein the parallelograms are rhombuses.
Claim 14
Dependent Claim
32 words
13 . The intervertebral prosthesis of claim 8 , wherein the intervertebral prosthesis includes at least one material selected from the group consisting of a metal, a carbon fiber, and a polymer.
Claim 15
Dependent Claim
16 words
14 . The intervertebral prosthesis of claim 13 , wherein the intervertebral prosthesis includes a metal.
Claim 16
Dependent Claim
27 words
15 . The intervertebral prosthesis of claim 14 , wherein the metal includes at least one member selected from the group consisting of titanium and metal alloy.
Claim 17
Dependent Claim
16 words
16 . The intervertebral prosthesis of claim 15 , wherein the metal includes a metal alloy.
Claim 18
Dependent Claim
17 words
17 . The intervertebral prosthesis of claim 16 , wherein the metal alloy is a stainless steel.
Claim 19
Dependent Claim
17 words
18 . The intervertebral prosthesis of claim 13 , wherein the intervertebral prosthesis includes a carbon fiber.
Claim 20
Dependent Claim
16 words
19 . The intervertebral prosthesis of claim 13 , wherein the intervertebral prosthesis includes a polymer.
Claim 21
Dependent Claim
16 words
20 . The intervertebral prosthesis of claim 19 , wherein the polymer is a bioreabsorbable polymer.
Claim 22
Dependent Claim
29 words
21 . The intervertebral prosthesis of claim 20 , wherein the bioreabsorbable polymer includes at least one member selected from the group consisting of polyglycotic acid and polylactic acid.
Claim 23
Dependent Claim
14 words
22 . The intervertebral prosthesis of claim 19 , wherein the polymer includes polymethylmethacylates.
Claim 24
Dependent Claim
17 words
23 . The intervertebral prosthesis of claim 22 , wherein the polymethylmethacylate is blended with an antibiotic.
Claim 25
Dependent Claim
28 words
24 . The intervertebral prosthesis of claim 13 , wherein the intervertebral prosthesis has a width in a range of between about 24 mm and about 28 mm.
Claim 26
Dependent Claim
28 words
25 . The intervertebral prosthesis of claim 24 , wherein the intervertebral prosthesis has a length in a range of between about 8 mm and about 10 mm.
Claim 27
Dependent Claim
28 words
26 . The intervertebral prosthesis of claim 25 , wherein the intervertebral prosthesis has a height in a range of between about 10 mm and about 16 mm.
Claim 28
Dependent Claim
31 words
27 . The intervertebral prosthesis of claim 26 , wherein the front arc of the prosthesis has a thickness in a range of between about 1.5 mm and about 2 mm.
Claim 29
Dependent Claim
19 words
28 . The intervertebral prosthesis of claim 2 , wherein the front arc and the back arc are continuous.
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