Patent US2784457A successfully refreshed from Google Patents.
US6638310B2
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US
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Intervertebral spacer and implant insertion instrumentation
Assignee: Warsaw Orthopedic Inc
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Filing: 2000-12-12
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Granted: 2003-10-28
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Expires: 2020-12-12
Abstract
Abstract An intervertebral spacer formed of dense cancellous human or animal bone is provided. In one preferred embodiment, the intervertebral spacer includes at least one bore which is dimensioned to receive a plug formed from cortical bone tissue. The cortical bone plug provides increased mechanical strength to the intervertebral spacer. Instrumentation for gauging the size of an intervertebral receiving bed and for grasping and inserting an intervertebral spacer or implant into an intervertebral receiving bed are also provided. These instruments include a spacer trial or set of spacer trials for determining the appropriate size spacer required for a particular surgical procedure, a spacer introducer for grasping and positioning a spacer at least partially within a receiving bed formed in the intervertebral space, and a bone tamp for driving a spacer into the receiving bed. Any one or all of these instruments may be provided in a kit for inserting an implant into the intervertebral space. The kit may also include one or more intervertebral spacers or implants.
Inventors
- 👤 Jo-Wen Lin
- 👤 Nelson L. Scarborough
- 👤 Lawrence Shimp
- 👤 David Kaes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/46; A61F2/4684; A61F2/28; A61F2/4455; A61F2/4603; A61F2/4611; A61F2/4465; A61F2/447; A61F2002/2825; A61F2002/2853; A61F2002/2892; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30057; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30131; A61F2002/30316; A61F2002/30329; A61F2002/30476; A61F2002/30492; A61F2002/30535; A61F2002/30604; A61F2002/30616; A61F2002/4622; A61F2002/4625; A61F2002/4628; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
An intervertebral spacer for intervertebral implantation, the intervertebral spacer comprising: a body formed of dense cancellous bone, the body having a leading end, a trailing end, a planar top surface, a planar bottom surface, and at least one sidewall, and a shell formed of cortical bone which is positioned about at least a portion of the body, wherein the body has a substantially rectangular configuration and the shell is U-shaped, the shell being positioned in relation to the body about at least a portion of the sidewalls of the body.
Claim 2
Dependent Claim
90 words
An intervertebral spacer for intervertebral implantation, the intervertebral spacer comprising: a body formed of dense cancellous bone, the body having a leading end, a trailing end, a planar top surface, a planar bottom surface, and at least one sidewall, and a shell formed of cortical bone which is positioned about at least a portion of the body, wherein the body has a substantially rectangular configuration and the shell is U-shaped, the shell being positioned in relation to the body about at least a portion of the sidewalls of the body.
Claim 3
Dependent Claim
16 words
An intervertebral spacer according to claim 1 , wherein the body has a substantially rectangular configuration.
Claim 4
Dependent Claim
42 words
An intervertebral spacer according to claim 2 further comprising a pair of angled sidewalls, one of the angled sidewalls being positioned on each end of the trailing end and each angled sidewall connecting the trailing end with the at least one sidewall.
Claim 5
Dependent Claim
33 words
An intervertebral spacer according to claim 1 , further including at least one post formed of cortical bone, the at least one post extending between the top and bottom surfaces of the body.
Claim 6
Dependent Claim
13 words
An intervertebral spacer according to claim 4 , wherein the post is cylindrical.
Claim 7
Dependent Claim
23 words
An intervertebral spacer according to claim 4 , wherein the at least one post includes a plurality of posts formed of cortical bone.
Claim 8
Dependent Claim
21 words
An intervertebral spacer according to claim 6 , wherein four of said posts are positioned in spaced relation within the matrix.
Claim 9
Dependent Claim
23 words
An intervertebral spacer according to claim 6 , wherein the plurality of posts includes four posts supported in spaced relation within the body.
Claim 10
Dependent Claim
21 words
An intervertebral spacer according to claim 6 , further including at least one post formed of a load bearing biocompatible material.
Claim 11
Dependent Claim
19 words
An intervertebral spacer according to claim 9 , wherein the at least one post includes a plurality of posts.
Claim 12
Dependent Claim
23 words
An intervertebral spacer according to claim 9 , wherein the biocompatible material is selected from the group consisting of polymers, ceramics and metals.
References Cited (Backward Citations)
US4516276A
Cited
US4484570A
Cited
US4566466A
Cited
US4637931A
Cited
US4834757A
Cited
US4950296A
Cited
US5776199A
Cited
US5522899A
Cited
US5207710A
Cited
US4961740A
Cited
US4961740B1
Cited
US5061786A
Cited
US5298254A
Cited
US5439684A
Cited
US5192327A
Cited
US6132472A
Cited
US5888219A
Cited
US5545222A
Cited
US5662710A
Cited
US5769897A
Cited
US5314476A
Cited
US5423817A
Cited
US5716415A
Cited
US5443514A
Cited
US5507813A
Cited
US5609636A
Cited
US5800547A
Cited
US5984967A
Cited
US5607424A
Cited
US6066174A
Cited
US5989289A
Cited
US5888222A
Cited
US5782830A
Cited
US5709683A
Cited
US5814084A
Cited
US5824078A
Cited
US6083225A
Cited
US5653763A
Cited
US5968047A
Cited
US5868749A
Cited
US6111164A
Cited
US5728159A
Cited
US5749916A
Cited
US6159215A
Cited
US5899939A
Cited
US6030635A
Cited
WO2000024327A2
Cited
WO2000040177A1
Cited
WO2000040179A1
Cited
US6113638A
Cited
US6379385B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-10-27 | 2007-04-28 | 2007-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-10-27 | 2011-04-28 | 2011-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-10-27 | 2015-04-28 | 2015-10-28 | $7700.00 | Window Closed / Lapsed |