Patent US2463679A successfully refreshed from Google Patents.
Patent US6579320B1 successfully refreshed from Google Patents.
US6579320B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intervertebral disc prosthesis with contact blocks
Assignee: Stryker Spine SAS
•
Filing: 1999-12-09
•
Granted: 2003-06-17
•
Expires: 2019-12-09
Abstract
Abstract An intervertebral disk prosthesis comprising two plates and a cushion interposed between the plates is contemplated. The cushion includes a compressible body having two ends in contact with the plates. At least one of the plates comprises at least one stud for stressing the body along a direction not parallel to a main access of the prosthesis and mobile relative to the body. Thus the prosthesis imitates and approximates the mechanical properties of a healthy natural intervertebral disk.
Inventors
- 👤 Fabien Gauchet
- 👤 Pierre-Henri Saint-Martin
- 👤 William Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2/30721; A61F2/30742; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61F2/30767; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30069; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30133; A61F2002/30159; A61F2002/30179; A61F2002/30199; A61F2002/30224; A61F2002/30225; A61F2002/30316; A61F2002/30329; A61F2002/30383; A61F2002/3039; A61F2002/30398; A61F2002/304; A61F2002/30403; A61F2002/30535; A61F2002/30563; A61F2002/30565; A61F2002/30576; A61F2002/30578; A61F2002/30594; A61F2002/30599; A61F2/3094; A61F2002/30975; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0015; A61F2230/0028; A61F2230/0058; A61F2230/0063; A61F2230/0069; A61F2250/00; A61F2250/0058; A61F2250/006; A61F2250/0063; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00389; A61F2310/00592; A61F2310/00796
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
84 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; and a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is slidably movable relative to the body.
Claim 2
Dependent Claim
84 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; and a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is slidably movable relative to the body.
Claim 3
Dependent Claim
36 words
Intervertebral disc prosthesis having a main axis, comprising: two plates; and a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud slidably movable in the body.
Claim 4
Dependent Claim
36 words
Intervertebral disc prosthesis having a main axis, comprising: two plates; and a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud slidably movable in the body.
Claim 5
Dependent Claim
27 words
Prosthesis according to claim 1 or 2 , wherein the at least one contact stud is located at an off-center position on the at least one plate.
Claim 6
Dependent Claim
35 words
Prosthesis according to claim 1 or 2 , wherein the at least one contact stud extends from the at least one plate to a distance from the other plate when the prosthesis is not stressed.
Claim 7
Dependent Claim
38 words
Prosthesis according to claim 1 or 2 , wherein the at least one contact stud has a length of between about 0.60 and about 0.90 of the distance separating the two plates when the prosthesis is not stressed.
Claim 8
Dependent Claim
37 words
Prosthesis according to claim 1 or 2 , wherein the at least one contact stud immobilizes the body relative to the at least one plate so that no displacement parallel to the at least one plate occurs.
Claim 9
Dependent Claim
30 words
Prosthesis according to claim 1 or 2 , wherein the at least one contact stud defines a flattened shape in a plane radial to the main axis of the prosthesis.
Claim 10
Dependent Claim
34 words
Prosthesis according to claim 1 or 2 , wherein the at least one contact stud defines a flattened shape in a plane tangential to a direction circumferential to the main axis of the prosthesis.
Claim 11
Dependent Claim
29 words
Prosthesis according to claim 1 or 2 , wherein a lateral face of the at least one contact stud extends continuously around an outer lateral face of the body.
Claim 12
Dependent Claim
41 words
Prosthesis according to claim 1 or 2 , wherein the plate opposite the at least one plate including the at least one contact stud defines a recessed zone opposite the at least one contact stud when the prosthesis is at rest.
Claim 13
Dependent Claim
109 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is movable relative to the body; and wherein the body defines a recess opening into a lateral face of the body and the at least one contact stud extends in the recess opening.
Claim 14
Dependent Claim
109 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is movable relative to the body; and wherein the body defines a recess opening into a lateral face of the body and the at least one contact stud extends in the recess opening.
Claim 15
Dependent Claim
114 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is movable relative to the body; and wherein the at least one contact stud has a cylindrical lateral face, and the body has a cylindrical face bearing on the cylindrical face of the at least one contact stud.
Claim 16
Dependent Claim
114 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is movable relative to the body; and wherein the at least one contact stud has a cylindrical lateral face, and the body has a cylindrical face bearing on the cylindrical face of the at least one contact stud.
Claim 17
Dependent Claim
98 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is movable relative to the body; and wherein the at least one contact stud has a lateral face extending outside the body.
Claim 18
Dependent Claim
98 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least one contact stud; a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least one contact stud, the at least one contact stud stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is movable relative to the body; and wherein the at least one contact stud has a lateral face extending outside the body.
Claim 19
Dependent Claim
100 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least two contact studs arranged symmetrically about the main axis of the at least one plate; and a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least two contact studs, at least one of the at least two contact studs stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is slidably movable relative to the body.
Claim 20
Dependent Claim
100 words
Intervertebral disc prosthesis having a main axis, comprising: two plates, wherein at least one of the plates includes at least two contact studs arranged symmetrically about the main axis of the at least one plate; and a deformable body interposed between the plates, wherein upon movement of the at least one of the plates having the at least two contact studs, at least one of the at least two contact studs stresses the body in a direction not parallel to the main axis of the prosthesis and the at least one contact stud is slidably movable relative to the body.
Claim 21
Dependent Claim
62 words
Intervertebral disc prosthesis having a main axis, comprising: a first and second plate, each plate comprising at least one contact stud, the at least one contact stud of the first plate overlapping the at least one contact stud of the second plate by a length in a direction parallel to the main axis of the prosthesis when the prosthesis is not stressed.
Claim 22
Dependent Claim
62 words
Intervertebral disc prosthesis having a main axis, comprising: a first and second plate, each plate comprising at least one contact stud, the at least one contact stud of the first plate overlapping the at least one contact stud of the second plate by a length in a direction parallel to the main axis of the prosthesis when the prosthesis is not stressed.
Claim 23
Dependent Claim
32 words
Prosthesis according to claim 15 , wherein the overlap length is between about 0.35 and about 0.65 of the distance separating the first and second plates when the prosthesis is not stressed.
Claim 24
Dependent Claim
33 words
Prosthesis according to claim 15 or 16 , wherein the overlap length is between about 0.45 and 0.85 of the height of the contact studs parallel to the main axis of the prosthesis.
Claim 25
Dependent Claim
32 words
Prosthesis according to claim 1 , 2 or 15 , wherein each plate comprises at least two contact studs, the contact studs being arranged alternatingly around the main axis of the prosthesis.
Claim 26
Dependent Claim
57 words
Intervertebral disc prosthesis comprising: two plates; a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud movable in the body; and wherein the body defines a recess opening into a lateral face of the body and the at least one contact stud extends in the recess opening.
Claim 27
Dependent Claim
57 words
Intervertebral disc prosthesis comprising: two plates; a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud movable in the body; and wherein the body defines a recess opening into a lateral face of the body and the at least one contact stud extends in the recess opening.
Claim 28
Dependent Claim
62 words
Intervertebral disc prosthesis comprising: two plates; a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud movable in the body; and wherein the at least one contact stud has a cylindrical lateral face, and the body has a cylindrical face bearing on the cylindrical face of the at least one contact stud.
Claim 29
Dependent Claim
62 words
Intervertebral disc prosthesis comprising: two plates; a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud movable in the body; and wherein the at least one contact stud has a cylindrical lateral face, and the body has a cylindrical face bearing on the cylindrical face of the at least one contact stud.
Claim 30
Dependent Claim
46 words
Intervertebral disc prosthesis comprising: two plates; a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud movable in the body; and wherein the at least one contact stud has a lateral face extending outside the body.
Claim 31
Dependent Claim
46 words
Intervertebral disc prosthesis comprising: two plates; a deformable body interposed between the plates, wherein at least one of the plates comprises at least one contact stud movable in the body; and wherein the at least one contact stud has a lateral face extending outside the body.
References Cited (Backward Citations)
US4946378A
Cited
EP0356112A1
Cited
US5370697A
Cited
US5534030A
Cited
US5674294A
Cited
US5458642A
Cited
US6019793A
Cited
US5824094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-06-16 | 2006-12-16 | 2007-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-06-16 | 2010-12-16 | 2011-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-06-16 | 2014-12-16 | 2015-06-17 | $7700.00 | Window Closed / Lapsed |