Patent US2036298A successfully refreshed from Google Patents.
US5665121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preformed mantle
Assignee: HOWMEDICA INTERNATIONAL S DE RL
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Filing: 1996-02-29
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Granted: 1997-09-09
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Expires: 2016-02-29
Abstract
Abstract A prosthesis having attachment portion for insertion into or attachment to a patient's bone without bone cement. Parts of the attachment portion on the prosthesis are attached to the bone are covered with a mantle of synthetic resin material and which has a roughened outer surface with bone fragments or calcium phosphate fragments embedded therein.
Inventors
- 👤 Graham A. Gie
- 👤 Peter Lawes
- 👤 Lars Linder
- 👤 Robin S. M. Ling
- 👤 Tom J. Slooff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:09
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4684; A61F2/30767; A61F2/30907; A61F2/32; A61F2/34; A61F2/36; A61F2/3662; A61F2/38; A61F2/4601; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8847; A61F2/30721; A61F2/30723; A61F2/30724; A61F2/3676; A61F2/4603; A61F2/4607; A61F2/28; A61F2002/2835; A61F2002/30726; A61F2002/30919; A61F2002/4619; A61F2002/4631; A61F2310/00; A61F2310/00389; A61F2310/00592; A61F2310/00796; A61F2310/00928; A61F2310/00952; A61F2310/00958
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
A method of attaching a prosthesis in a bone canal comprising: placing the prosthesis within a separate preformed polymethylmethacrylate sheath having a smooth inner and a roughened outer surface, said sheath having an open proximal end and a closed distal end and said inner surface permitting sliding movement of said prosthesis therein, and said sheath having a distal void to permit distal movement of said prosthesis therein; preparing the surface of the bone to which the prosthesis is to be attached; providing a layer of bone fragments on said surface of said bone; and thereafter inserting said prosthesis and sheath so that the roughened surface of the sheath closely engages said bone fragments on said surface of said bone.
Claim 2
Independent Claim
119 words
A method of attaching a prosthesis in a bone canal comprising: placing the prosthesis within a separate preformed polymethylmethacrylate sheath having a smooth inner and a roughened outer surface, said sheath having an open proximal end and a closed distal end and said inner surface permitting sliding movement of said prosthesis therein, and said sheath having a distal void to permit distal movement of said prosthesis therein; preparing the surface of the bone to which the prosthesis is to be attached; providing a layer of bone fragments on said surface of said bone; and thereafter inserting said prosthesis and sheath so that the roughened surface of the sheath closely engages said bone fragments on said surface of said bone.
Claim 3
Dependent Claim
38 words
The method as claimed in claim 1 further including the step of placing the sheath into the prepared layer of bone fragments on the bone surface and then placing the attachment portion of the prosthesis into the sheath.
Claim 4
Dependent Claim
16 words
The method as set forth in claim 1 wherein said sheath has bioactive fragments embedded therein.
Claim 5
Dependent Claim
17 words
The method as set forth in claim 3 wherein said bioactive coating is formed by bone chips.
Claim 6
Dependent Claim
25 words
The method as set forth in claim 3 wherein said bioactive coating extends from 0.5 to 5 mm beyond the outer surface of said sheath.
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) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |