Patent US5015247A successfully refreshed from Google Patents.
US5015247A
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US
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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 21:37
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.
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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) | 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 |