Patent US6045554A successfully refreshed from Google Patents.
US6045554A
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Cortical bone interference screw
Assignee: RTI Surgical Inc
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Filing: 1998-06-17
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Granted: 2000-04-04
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Expires: 2018-06-17
Abstract
Abstract An interference screw is provided by machining a fragment of autograft or allograft cortical bone from a donor or from a recipient's amputated bone. The interference screw has a cortical surface into which a self-tapping thread is machined. The interference screw has a machined pointed, rounded or flush end and an opposite machined end which mates with a drive means, and has advantages over conventional interference screws known in the art in that subsequent to implantation, no residual hardware that must later be removed remains at the implant site.
Inventors
- 👤 James N. Grooms
- 👤 Kevin Carter
- 👤 David H. Dulebohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:27
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8875; A61B17/68; A61B17/84; A61B17/86; A61B17/8605; A61B17/861; A61B17/862; A61B17/866; A61B17/8877; A61B17/8883; A61B17/8886; A61B17/8891; A61B17/8625; A61B17/8635; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30771; A61F2002/3085; A61F2002/30866; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/909
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
56 words
A method for securing an implant which comprises drilling a cavity in an implant recipient's bone at or adjacent to an implant site and inserting therein an interference screw made from allograft or autograft cortical bone, thereby locking the implant into place, wherein the implant is a ligament implant in an anterior cruciate ligament surgical procedure.
Claim 2
Independent Claim
56 words
A method for securing an implant which comprises drilling a cavity in an implant recipient's bone at or adjacent to an implant site and inserting therein an interference screw made from allograft or autograft cortical bone, thereby locking the implant into place, wherein the implant is a ligament implant in an anterior cruciate ligament surgical procedure.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein said interference screw is cannulated.
Claim 4
Independent Claim
51 words
A method of repairing the anterior cruciate ligament in a patient which comprises: creating a cavity for ligament implantation; inserting a ligament implant in said cavity; and inserting an interference screw into said cavity, adjacent to said ligament implant, said interference screw being made from a machined fragment of cortical bone.
Claim 5
Independent Claim
51 words
A method of repairing the anterior cruciate ligament in a patient which comprises: creating a cavity for ligament implantation; inserting a ligament implant in said cavity; and inserting an interference screw into said cavity, adjacent to said ligament implant, said interference screw being made from a machined fragment of cortical bone.
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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) | 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 |