US5152763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for grafting bone
Assignee: INSTRUMENT MAKAR Inc
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Filing: 1991-04-02
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Granted: 1992-10-06
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Expires: 2011-04-02
Abstract
Abstract An apparatus for manually securing a bone graft from a donor site and delivering the bone graft to an acceptor site includes a hollow cylindrical cutter and a solid inner cylindrical plunger. The cutter has a cutting end and a grasping end, with the cutting end being tapered to a sharp edge for cutting the bone graft from the donor site. The plunger is engageable with the hollow cutter to push the retained bore graft from the cutter into the acceptor site. Equidistantly spaced markings on the cutter and plunger can be used to gauge the depth of the bone graft.
Inventors
- 👤 Lanny L. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:50
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320016; A61B17/16; A61B17/1635; A61B90/00; A61B90/06; A61B2090/062; A61B90/39; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4601; A61F2/28; A61F2002/2835
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
A method for grafting bone, comprising the steps of: surgically preparing a bone acceptor site; surgically exposing a bone donor site; determining a desired diameter of bone graft; determining a desired depth of bone graft by placing a cutting end of a bone grafter into an acceptor defect and gauging the depth by means of equidistantly spaced markings on an exterior of the bone grafter; retracting a plunger from the bone grafter by a distance greater than the desired depth of bone graft, using equidistantly spaced markings on an exterior of the plunger as a guide; pushing a sharpened cutting end of the bone grafter into the donor bone site to the desired depth while maintaining the plunger in the retracted state; angulating the bone grafter side to side to free the bone graft after the desired depth has been achieved; compacting the bone graft to the desired depth by compressing the bone graft between a flat end of the plunger and an additional surface; moving the bone grafter and retained bone graft to the acceptor site; placing the cutting edge of the bone grafter at the exact site of deposition; pushing the plunger into the bone grafter to move the bone graft out of the bone graft and into the acceptor site; and removing the bone grafter from the acceptor site.
Claim 2
Independent Claim
222 words
A method for grafting bone, comprising the steps of: surgically preparing a bone acceptor site; surgically exposing a bone donor site; determining a desired diameter of bone graft; determining a desired depth of bone graft by placing a cutting end of a bone grafter into an acceptor defect and gauging the depth by means of equidistantly spaced markings on an exterior of the bone grafter; retracting a plunger from the bone grafter by a distance greater than the desired depth of bone graft, using equidistantly spaced markings on an exterior of the plunger as a guide; pushing a sharpened cutting end of the bone grafter into the donor bone site to the desired depth while maintaining the plunger in the retracted state; angulating the bone grafter side to side to free the bone graft after the desired depth has been achieved; compacting the bone graft to the desired depth by compressing the bone graft between a flat end of the plunger and an additional surface; moving the bone grafter and retained bone graft to the acceptor site; placing the cutting edge of the bone grafter at the exact site of deposition; pushing the plunger into the bone grafter to move the bone graft out of the bone graft and into the acceptor site; and removing the bone grafter from the acceptor site.
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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) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |