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US4950295A
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Bone prosthesis anchoring method using a resorbable marrow cavity closure
Assignee: Synthes Bettlach GmbH
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Filing: 1989-04-24
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Granted: 1990-08-21
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Expires: 2009-04-24
Abstract
Abstract A resorbable marrow cavity closure comprises a plug formed of randomly packed, crimped pieces of thread of a resorbable polymer material.
Inventors
- 👤 Hans Weigum
- 👤 Robert Mathys, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:14
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/30723; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/30199; A61F2002/30205; A61F2002/3021; A61F2002/30316; A61F2002/30535; A61F2002/30563; A61F2/46; A61F2002/4631; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0063; A61F2230/0067
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A method of anchoring a prosthesis in a marrow cavity of a bone, comprising the steps of blocking the marrow cavity by placing a porous plug formed of randomly packed, crimped pieces of thread of a resorbable polymer material into the marrow cavity to a depth sufficient to allow a cement to fill a portion of the marrow cavity between the bone and the prosthesis, filling the marrow cavity portion with cement, and inserting the prosthesis into the cement in the marrow cavity portion.
Claim 2
Independent Claim
84 words
A method of anchoring a prosthesis in a marrow cavity of a bone, comprising the steps of blocking the marrow cavity by placing a porous plug formed of randomly packed, crimped pieces of thread of a resorbable polymer material into the marrow cavity to a depth sufficient to allow a cement to fill a portion of the marrow cavity between the bone and the prosthesis, filling the marrow cavity portion with cement, and inserting the prosthesis into the cement in the marrow cavity portion.
Claim 3
Dependent Claim
13 words
The method as defined in claim 1, wherein the plug is elastically deformable.
Claim 4
Dependent Claim
12 words
The method as defined in claim 1, wherein the plug is frustoconical.
Claim 5
Dependent Claim
15 words
The method as defined in claim 1, wherein the plug is made of polylactic acid.
Claim 6
Dependent Claim
14 words
The method as defined in claim 1, wherein the plug is made of monofilaments.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |