US6045580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fusion implant device and method of use
Assignee: Warsaw Orthopedic Inc
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Filing: 1998-10-09
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Granted: 2000-04-04
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Expires: 2018-10-09
Abstract
Abstract An intervertebral prosthesis includes a bone graft implant member dimensioned for insertion within an intervertebral space defined between adjacent vertebrae and having at least first and second longitudinal sections with respective first and second cross-sectional dimensions. The first cross-sectional dimension of the first implant section is greater than the second cross-section dimension of the second implant section to define a stepped region having a retaining surface. Consequently, upon insertion of the implant member within a generally correspondingly dimensioned receiving bed formed within the adjacent vertebrae, the retaining surface facilitates securement therewithin by corresponding engagement with surfaces of the receiving bed. a method for fusion of adjacent vertebrae utilizing the prosthesis is also disclosed.
Inventors
- 👤 Nelson Scarborough
- 👤 John W. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1671; A61B17/1637; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61F2/46; A61F2/4644; A61B17/02; A61B17/025; A61B2017/0256; A61F2002/2817; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30233; A61F2002/30261; A61F2002/30266; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3082; A61F2002/30827; A61F2002/30828; A61F2002/448; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2230/0082; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00179; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/909; Y10S606/91; Y10S606/913
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
121 words
An intervertebral prosthesis comprising an implant member having a first end and a second end and being dimensioned for insertion within a receiving bed formed in opposed faces of adjacent vertebrae, said implant member defining a longitudinal axis and having a first longitudinal section having a first planar surface and a second longitudinal section having a second planar surface, the implant member having a wedge-shaped configuration and a height which increases from the first end to the second end along the longitudinal axis, the first planar surface defining a first anile with respect to the longitudinal axis and the second planar surface defining a second angle with respect to the longitudinal axis, the second angle being greater than the first angle.
Claim 2
Dependent Claim
121 words
An intervertebral prosthesis comprising an implant member having a first end and a second end and being dimensioned for insertion within a receiving bed formed in opposed faces of adjacent vertebrae, said implant member defining a longitudinal axis and having a first longitudinal section having a first planar surface and a second longitudinal section having a second planar surface, the implant member having a wedge-shaped configuration and a height which increases from the first end to the second end along the longitudinal axis, the first planar surface defining a first anile with respect to the longitudinal axis and the second planar surface defining a second angle with respect to the longitudinal axis, the second angle being greater than the first angle.
Claim 3
Dependent Claim
26 words
An intervertebral prosthesis according to claim 1, further including a retaining surface formed on the implant member, the retaining surface including at least one stepped region.
Claim 4
Dependent Claim
18 words
An intervertebral prosthesis according to claim 2, wherein the at least one stepped region includes two stepped regions.
Claim 5
Dependent Claim
25 words
An intervertebral prosthesis according to claim 2, wherein the at least one stepped region is formed by removing a portion of the second longitudinal section.
Claim 6
Dependent Claim
15 words
An intervertebral prosthesis according to claim 1, wherein the implant member is formed from bone.
Claim 7
Dependent Claim
19 words
An intervertebral prosthesis according to claim 5, wherein the bone comprises at least one of cancellous and cortical bone.
Claim 8
Dependent Claim
31 words
An intervertebral prosthesis according to claim 1, wherein the implant member comprises a biocompatible material selected from the group consisting of titanium, titanium alloys, surgical steel, polymeric material and ceramic material.
Claim 9
Dependent Claim
122 words
An intervertebral implant for insertion within a receiving bed located between adjacent vertebrae, the implant comprising a body having a longitudinal axis and including a front wall, a rear wall, a pair of sidewalls, a top surface and a bottom surface, the pair of sidewalls decreasing in height from the front wall to the rear wall such that the implant has a wedge-shaped configuration, and at least one cutout formed at the intersection of the front wall and at least one of the sidewalls and extending between the top and bottom surfaces, the cutout defining a stepped portion having one wall which is substantially parallel to the sidewalls and a second wall which is substantially parallel to the front and rear walls.
Claim 10
Dependent Claim
122 words
An intervertebral implant for insertion within a receiving bed located between adjacent vertebrae, the implant comprising a body having a longitudinal axis and including a front wall, a rear wall, a pair of sidewalls, a top surface and a bottom surface, the pair of sidewalls decreasing in height from the front wall to the rear wall such that the implant has a wedge-shaped configuration, and at least one cutout formed at the intersection of the front wall and at least one of the sidewalls and extending between the top and bottom surfaces, the cutout defining a stepped portion having one wall which is substantially parallel to the sidewalls and a second wall which is substantially parallel to the front and rear walls.
Claim 11
Dependent Claim
18 words
An intervertebral implant according to claim 8, wherein the at least one cutout includes first and second cutouts.
Claim 12
Dependent Claim
14 words
An intervertebral implant according to claim 8, wherein the implant is formed from bone.
Claim 13
Dependent Claim
22 words
An intervertebral implant according to claim 10, wherein the bone is selected from the group consisting of cancellous bone and cortical bone.
Claim 14
Dependent Claim
31 words
An intervertebral implant according to claim 8, wherein the implant comprises a biocompatible material selected from the group consisting of titanium, titanium alloys, surgical grade steel, polymeric material and ceramic material.
Claim 15
Dependent Claim
23 words
An intervertebral prosthesis according to claim 1, wherein the first end of the implant member defines the greatest height of the implant member.
References Cited (Backward Citations)
US3703006A
Cited
US3848601A
Cited
US4185383A
Cited
US4059115A
Cited
US4349921A
Cited
US4877020A
Cited
US4743256A
Cited
US4820305A
Cited
US4878915A
Cited
US4834757A
Cited
US4917704A
Cited
US4772287A
Cited
EP0307241A2
Cited
US5505732A
Cited
US5015247A
Cited
US5484437A
Cited
FR2636227A1
Cited
US4961740A
Cited
US5026373A
Cited
US4961740B1
Cited
US5015255A
Cited
US5062845A
Cited
US5445639A
Cited
US5458638A
Cited
US5055104A
Cited
EP0493698A1
Cited
US5390683A
Cited
WO1993001771A1
Cited
DE4302397A1
Cited
US5489307A
Cited
US5423817A
Cited
US5443514A
Cited
US5554191A
Cited
US5653761A
Cited
EP0732093A2
Cited
EP0734703A2
Cited
US5814084A
Cited
US5824094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-04 | 2003-10-04 | 2004-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-04 | 2007-10-04 | 2008-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-04 | 2011-10-04 | 2012-04-04 | $7700.00 | Window Closed / Lapsed |