Patent US6626943B2 successfully refreshed from Google Patents.
US7250060B2
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Hybrid intervertebral disc system
Assignee: Warsaw Orthopedic Inc
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Filing: 2004-01-27
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Granted: 2007-07-31
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Expires: 2024-01-27
Abstract
Abstract A vertebral implant for interposition between two vertebral endplates comprises a first endplate assembly for engaging a first vertebral endplate, a second endplate assembly for engaging a second vertebral endplate, and a first flexible core component interposed between the first and second endplate assemblies. The first flexible core component comprises first and second end portions. The first end portion is coupled to the first endplate assembly to prevent translation of the first end portion with respect to the first endplate assembly, and the second end portion is pivotable with respect to the second endplate assembly.
Inventors
- 👤 Hai H. Trieu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:31
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2/4425; A61F2/08; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30014; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30133; A61F2002/30138; A61F2002/30153; A61F2002/30199; A61F2002/302; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30362; A61F2002/30364; A61F2002/30369; A61F2002/30448; A61F2002/30462; A61F2002/30476; A61F2002/305; A61F2002/30535; A61F2002/30563; A61F2002/30581; A61F2002/30621; A61F2002/30649; A61F2002/30662; A61F2002/30667; A61F2002/30677; A61F2/30767; A61F2/30771; A61F2002/30841; A61F2002/30878; A61F2002/30904; A61F2002/30906; A61F2002/30925; A61F2002/443; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/005; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0015; A61F2230/0017; A61F2230/0019; A61F2230/0063; A61F2230/0065; A61F2250/00; A61F2250/0014; A61F2250/0018; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029; A61F2310/00161; A61F2310/00167; A61F2310/00179; A61F2310/00185; A61F2310/00203; A61F2310/00239; A61F2310/00389; A61F2310/00574; A61F2310/0058; A61F2310/00592; A61F2310/00796; A61F2310/00976
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
140 words
A vertebral implant for interposition between two vertebral endplates comprising: a first endplate assembly for engaging a first vertebral endplate; a second endplate assembly for engaging a second vertebral endplate; and a first flexible core component interposed between the first and second endplate assemblies, the first flexible core component comprising a first end portion and a second end portion, wherein the first endplate assembly comprises a first circumferential groove for coupling with a complementary first circumferential ridge of the first end portion, and wherein the coupling of the first end portion to the first endplate assembly restricts lateral translation of the first end portion with respect to the first endplate assembly while permitting pivoting motion between the first end portion and the first endplate assembly and wherein the second end portion is pivotable with respect to the second endplate assembly.
Claim 2
Dependent Claim
140 words
A vertebral implant for interposition between two vertebral endplates comprising: a first endplate assembly for engaging a first vertebral endplate; a second endplate assembly for engaging a second vertebral endplate; and a first flexible core component interposed between the first and second endplate assemblies, the first flexible core component comprising a first end portion and a second end portion, wherein the first endplate assembly comprises a first circumferential groove for coupling with a complementary first circumferential ridge of the first end portion, and wherein the coupling of the first end portion to the first endplate assembly restricts lateral translation of the first end portion with respect to the first endplate assembly while permitting pivoting motion between the first end portion and the first endplate assembly and wherein the second end portion is pivotable with respect to the second endplate assembly.
Claim 3
Dependent Claim
71 words
The vertebral implant of claim 1 wherein the second end portion comprises a second circumferential ridge for coupling with a second circumferential groove of the second endplate assembly and wherein the coupling of the second end portion to the second endplate assembly restricts lateral translation of the second end portion with respect to the second endplate assembly while permitting pivoting motion between the second end portion and the second endplate assembly.
Claim 4
Dependent Claim
35 words
The vertebral implant of claim 1 wherein the first endplate assembly articulates with respect to the second endplate assembly in a direction transverse to a longitudinal axis extending through the first and second vertebral endplates.
Claim 5
Dependent Claim
29 words
The vertebral implant of claim 1 wherein the first flexible core component comprises a first wear resistant articulating surface and the second endplate assembly comprises a smooth articulating surface.
Claim 6
Dependent Claim
20 words
The vertebral implant of claim 4 wherein the first wear resistant articulating surface and the smooth articulating surfaces are flat.
Claim 7
Dependent Claim
20 words
The vertebral implant of claim 4 wherein the first wear resistant articulating surface comprises an ultra-high molecular weight polyethylene (UHMWPE).
Claim 8
Dependent Claim
17 words
The vertebral implant of claim 4 wherein the first wear resistant articulating surface comprises a cobalt-chrome alloy.
Claim 9
Dependent Claim
16 words
The vertebral implant of claim 4 wherein the first wear resistant articulating surface comprises cross-linked UHMWPE.
Claim 10
Dependent Claim
16 words
The vertebral implant of claim 4 wherein the first wear resistant articulating surface comprises polyetheretherketone (PEEK).
Claim 11
Dependent Claim
21 words
The vertebral implant of claim 4 wherein the first wear resistant articulating surface comprises polyurethane treated with a metal ion implantation.
Claim 12
Dependent Claim
28 words
The vertebral implant of claim 1 wherein the first flexible core component comprises a second wear resistant articulating surface and the second endplate comprises a smooth articulating surface.
Claim 13
Dependent Claim
14 words
The vertebral implant of claim 1 wherein the first flexible core component comprises polyurethane.
Claim 14
Dependent Claim
14 words
The vertebral implant of claim 1 wherein the first flexible core component comprises silicone.
Claim 15
Dependent Claim
15 words
The vertebral implant of claim 1 wherein the first flexible core component comprises a hydrogel.
Claim 16
Dependent Claim
18 words
The vertebral implant of claim 1 wherein the first flexible core component comprises copolymers of silicone and polyurethane.
Claim 17
Dependent Claim
121 words
A vertebral implant for interposition between two vertebral endplates, the vertebral implant comprising: a first endplate assembly comprising a first vertebral endplate contact surface and a first interior surface; a second endplate assembly comprising a second vertebral endplate contact surface and a second interior surface; a flexible core component interposed between the first and second interior surfaces, the flexible core component comprising a first end portion and a second end portion, wherein the first end portion comprises a circumferential ridge for coupling to a circumferential groove of the first interior surface to prevent translation of the first end portion with respect to the first endplate assembly, and wherein the second end portion is pivotable with respect to the second endplate assembly.
Claim 18
Dependent Claim
121 words
A vertebral implant for interposition between two vertebral endplates, the vertebral implant comprising: a first endplate assembly comprising a first vertebral endplate contact surface and a first interior surface; a second endplate assembly comprising a second vertebral endplate contact surface and a second interior surface; a flexible core component interposed between the first and second interior surfaces, the flexible core component comprising a first end portion and a second end portion, wherein the first end portion comprises a circumferential ridge for coupling to a circumferential groove of the first interior surface to prevent translation of the first end portion with respect to the first endplate assembly, and wherein the second end portion is pivotable with respect to the second endplate assembly.
Claim 19
Dependent Claim
31 words
The vertebral implant of claim 16 wherein the first end portion is affixed to the first endplate assembly to prevent rotation between the first end portion and the first endplate assembly.
Claim 20
Dependent Claim
22 words
The vertebral implant of claim 16 wherein the first end portion is harder than a flexible portion of the flexible core component.
Claim 21
Dependent Claim
22 words
The vertebral implant of claim 16 wherein an articulating portion of the flexible core component is harder than the first end portion.
Claim 22
Dependent Claim
69 words
A hybrid vertebral implant comprising: first and second opposing endplate assemblies, each endplate assembly comprising an engagement surface having a circumferential undercut groove; and an elastically deformable core component comprising opposite end surfaces each having a circumferential ridge configured to engage the respective circumferential undercut grooves, wherein each engagement surface prevents linear displacement of the respective end surface while permitting rotational motion between the respective engagement and end surfaces.
Claim 23
Dependent Claim
69 words
A hybrid vertebral implant comprising: first and second opposing endplate assemblies, each endplate assembly comprising an engagement surface having a circumferential undercut groove; and an elastically deformable core component comprising opposite end surfaces each having a circumferential ridge configured to engage the respective circumferential undercut grooves, wherein each engagement surface prevents linear displacement of the respective end surface while permitting rotational motion between the respective engagement and end surfaces.
Claim 24
Dependent Claim
16 words
The hybrid vertebral implant of claim 20 wherein the end surfaces comprise a wear resistant material.
Claim 25
Dependent Claim
14 words
The hybrid vertebral implant of claim 20 wherein the opposite end surfaces are flat.
Claim 26
Dependent Claim
27 words
The hybrid vertebral implant of claim 20 wherein the elastically deformable core component comprises a portion having a lower modulus of elasticity than the opposite end surfaces.
Claim 27
Dependent Claim
16 words
The hybrid vertebral implant of claim 20 wherein the elastically deformable core comprises a polyolefin rubber.
Claim 28
Dependent Claim
15 words
The hybrid vertebral implant of claim 20 wherein the elastically deformable core component comprises polyurethane.
Claim 29
Dependent Claim
15 words
The hybrid vertebral implant of claim 20 wherein the elastically deformable core component comprises silicone.
Claim 30
Dependent Claim
16 words
The hybrid vertebral implant of claim 20 wherein the elastically deformable core component comprises a hydrogel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2010-07-30 | 2011-01-29 | 2011-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-07-30 | 2015-01-29 | 2015-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-07-30 | 2019-01-29 | 2019-07-31 | $7700.00 | Window Closed / Lapsed |