US5015247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threaded spinal implant
Assignee: Warsaw Orthopedic Inc
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Filing: 1988-06-13
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Granted: 1991-05-14
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Expires: 2008-06-13
Abstract
Abstract An artificial spinal implant is disclosed which when placed between two adjacent vertebrae directly participates and is incorporated in the ensuing fusion. Instrumentation and procedure is also disclosed.
Inventors
- 👤 Gary K. Michelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1671; A61B17/17; A61B17/1739; A61B17/1757; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61F2/46; A61F2/4603; A61F2/4611; A61B17/56; A61B17/58; A61B17/88; A61B17/8875; A61B17/02; A61B17/025; A61B2017/0256; A61B90/00; A61B90/03; A61B2090/033; A61B2090/036; A61F2/30721; A61F2/30744; A61F2/442; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30143; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30329; A61F2002/30405; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3085; A61F2002/448; A61F2002/4619; A61F2002/4625; A61F2002/4627; A61F2002/4629; A61F2002/4681; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0063; A61F2230/0069
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
72 words
A fusion implant comprising a cylindrical member having an outside diameter larger than the space between two adjacent vertebrae to be fused and a series of threads on the exterior of the cylindrical member for engaging said vertebrae to maintain said implant in place, a plurality of openings in the cylindrical surface of said member, said outside diameter of said cylindrical member being substantially uniform over the entire length of the implant.
Claim 2
Dependent Claim
72 words
A fusion implant comprising a cylindrical member having an outside diameter larger than the space between two adjacent vertebrae to be fused and a series of threads on the exterior of the cylindrical member for engaging said vertebrae to maintain said implant in place, a plurality of openings in the cylindrical surface of said member, said outside diameter of said cylindrical member being substantially uniform over the entire length of the implant.
Claim 3
Dependent Claim
19 words
The implant of claim 1 in which the implant is made from a material designed to promote bone ingrowth.
Claim 4
Dependent Claim
21 words
The implant of claim 1 in which said implant has a hollow portion for receiving autogenous bone for promoting bone ingrowth.
Claim 5
Dependent Claim
18 words
The implant of claim 3 in which said implant has a removable cap for covering said hollow portion.
Claim 6
Dependent Claim
18 words
The implant of claim 4 in which said cap has a thread for screwing onto said hollow portion.
Claim 7
Dependent Claim
22 words
The implant of claim 1 in which said implant has means for engaging a insertion/removal device for inserting and removing said insert.
Claim 8
Dependent Claim
16 words
The implant of claim 6 in which said engaging means comprises a shoulder and threaded opening.
Claim 9
Dependent Claim
12 words
The implant of claim 1 in which said threads are locking threads.
Claim 10
Dependent Claim
11 words
The implant of claim 1 in which said threads are interrupted.
References Cited (Backward Citations)
US2543780A
Cited
US3128768A
Cited
US3426364A
Cited
US3848601A
Cited
US4124026A
Cited
US4177524A
Cited
US4259072A
Cited
US4328593A
Cited
US4289123A
Cited
US4349921A
Cited
US4401112A
Cited
US4309777A
Cited
DE3132520A1
Cited
US4501269A
Cited
US4553273A
Cited
US4653486A
Cited
US4736738A
Cited
US4636217A
Cited
US4599086A
Cited
US4743260A
Cited
US4743256A
Cited
US4714469A
Cited
US4790303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |