Patent GB794580A successfully refreshed from Google Patents.
US6258125B1
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US
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Intervertebral allograft spacer
Assignee: Synthes USA LLC
•
Filing: 1999-07-30
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Granted: 2001-07-10
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Expires: 2019-07-30
Abstract
Abstract An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra. The implant has a wedge-shaped profile to restore disc height and the natural curvature of the spine. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The implant according to the present invention provides initial stability need for fusion without stress shielding.
Inventors
- 👤 David C. Paul
- 👤 Hansjuerg W. Emch
- 👤 Beat Schenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:17
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/006; A; A61; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/30; A61F2/3094; A61F2/30942; A61F2/44; A61F2/4455; A61F2/30721; A61F2/30724; A61F2/30744; A61F2/30965; A61F2/442; A61F2/4465; A61F2/46; A61F2/4603; A61F2/4611; A61F2/4644; A61F2002/2817; A61F2002/2835; A61F2002/2839; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30011; A61F2002/30057; A61F2002/3006; A61F2002/30062; A61F2002/30075; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30125; A61F2002/30126; A61F2002/30133; A61F2002/30138; A61F2002/30153; A61F2002/30158; A61F2002/30199; A61F2002/302; A61F2002/30224; A61F2002/30228; A61F2002/30233; A61F2002/30235; A61F2002/30237; A61F2002/3028; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30327; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30383; A61F2002/30387; A61F2002/30433; A61F2002/30448; A61F2002/30459; A61F2002/30462; A61F2002/30476; A61F2002/30477; A61F2002/30481; A61F2002/30492; A61F2002/30494; A61F2002/30507; A61F2002/30515; A61F2002/30535; A61F2002/30593; A61F2002/30599; A61F2002/30604; A61F2002/30616; A61F2002/30617; A61F2002/30667; A61F2002/3071; A61F2002/30733; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30782; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3082; A61F2002/30841; A61F2002/30843; A61F2002/30878; A61F2002/30891; A61F2002/30892; A61F2002/30894; A61F2002/30904; A61F2/30907; A61F2002/30909; A61F2002/30957; A61F2002/30971; A61F2002/30975; A61F2002/4635; A61F2002/4649; A61F2210/00; A61F2210/0004; A61F2210/0061; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2220/005; A61F2220/0066; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0008; A61F2230/0015; A61F2230/0017; A61F2230/0019; A61F2230/0026; A61F2230/0063; A61F2230/0065; A61F2230/0069; A61F2250/00; A61F2250/0014; A61F2250/0023; A61F2250/0036; A61F2250/0039; A61F2250/0058; A61F2250/006; A61F2250/0063; A61F2250/0085; A61F2250/0089; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179; A61F2310/00293; A61F2310/00353; B29C33/00; B29C33/20; B29C33/26; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3041; Y; Y10; Y10S; Y10S623/00; Y10S623/924; Y10S623/925
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
111 words
An intervertebral implant comprising a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra and having a wedge-shaped profile, wherein top and bottom surfaces of the implant have a plurality of teeth in combination with a discrete spacer comprising a piece of allogenic bone conforming in size and shape with a second portion of an end plate of a vertebra and having a wedge-shaped profile, wherein top and bottom surfaces of the second member are substantially smooth and regions between top and bottom surfaces and anterior and lateral sides of the spacer have curved edges to facilitate implantation of the spacer.
Claim 2
Dependent Claim
111 words
An intervertebral implant comprising a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra and having a wedge-shaped profile, wherein top and bottom surfaces of the implant have a plurality of teeth in combination with a discrete spacer comprising a piece of allogenic bone conforming in size and shape with a second portion of an end plate of a vertebra and having a wedge-shaped profile, wherein top and bottom surfaces of the second member are substantially smooth and regions between top and bottom surfaces and anterior and lateral sides of the spacer have curved edges to facilitate implantation of the spacer.
Claim 3
Dependent Claim
19 words
The implant of claim 1 , wherein at least one side has a channel for receiving a surgical instrument.
Claim 4
Dependent Claim
14 words
The implant of claim 1 , wherein the channel runs in an anterior-posterior direction.
Claim 5
Dependent Claim
13 words
The implant of claim 1 , wherein the teeth have a pyramid shape.
Claim 6
Dependent Claim
14 words
The implant of claim 1 , wherein the teeth have a saw tooth shape.
Claim 7
Dependent Claim
24 words
The implant of claim 1 , wherein at least one side of the implant has at least one hole for attachment of an inserter.
Claim 8
Dependent Claim
14 words
The implant of claim 6 , wherein the at least one hole is threaded.
Claim 9
Dependent Claim
22 words
The implant of claim 6 , wherein the at least one hole is provided in an anterior, posterior, posterior-lateral, or lateral side.
Claim 10
Dependent Claim
18 words
The implant of claim 1 , wherein the top and bottom surfaces are defined by flat planar surfaces.
Claim 11
Dependent Claim
32 words
The implant of claim 9 , wherein a region between the top and bottom surfaces and an anterior side of the implant is a curved edge to facilitate implantation of the implant.
Claim 12
Dependent Claim
31 words
The implant of claim 1 , wherein the top and bottom surfaces are defined by curved surfaces, said curved surfaces contoured to mimic surfaces of the end plates of the vertebrae.
Claim 13
Dependent Claim
18 words
The implant of claim 1 , wherein the implant has an interior space for receiving an osteoconductive material.
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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) | 2004-07-09 | 2005-01-08 | 2005-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-09 | 2009-01-08 | 2009-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-09 | 2013-01-08 | 2013-07-10 | $7700.00 | Window Closed / Lapsed |