US4200939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fixation of prostheses to bone
Assignee: Johnson and Johnson Professional Inc
•
Filing: 1977-10-19
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Granted: 1980-05-06
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Expires: 1997-10-19
Abstract
Abstract Method for fixation of prostheses to bone with sterile non toxic polymers such as polycaprolactone which are formable viscous liquids or putty-like solids at temperatures within the range of 45°-75° C. and hard, rigid solids at temperatures below about 42° C., and to a sterile package containing such polymers.
Inventors
- 👤 Zale Oser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:44
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/50; A61L27/14; A61L27/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
98 words
In a method for securing an artificial prothesis within a bone member wherein the prosthesis is inserted into a cavity in the bone member and permanently secured therein with a void filling, cementitious composition, the improvement comprising filling the void space around the prosthesis within the cavity of the bone member with said cementitious composition consisting essentially of a formable, thermoplastic polymer at a temperature in the range of 45° to 75° C. and thereafter allowing the polymer to cool to a hard, rigid solid at body temperature whereby the prosthesis is firmly secured within said bone member.
Claim 2
Dependent Claim
98 words
In a method for securing an artificial prothesis within a bone member wherein the prosthesis is inserted into a cavity in the bone member and permanently secured therein with a void filling, cementitious composition, the improvement comprising filling the void space around the prosthesis within the cavity of the bone member with said cementitious composition consisting essentially of a formable, thermoplastic polymer at a temperature in the range of 45° to 75° C. and thereafter allowing the polymer to cool to a hard, rigid solid at body temperature whereby the prosthesis is firmly secured within said bone member.
Claim 3
Dependent Claim
35 words
A method in accordance with claim 1 wherein the polymer is characterized by the following mechanical properties at 25° C.: ______________________________________
Compressive strength, MPa
80 min.
Indentation, mm 0.11 max.
Recovery, % 60 min.
______________________________________
Claim 4
Dependent Claim
12 words
A method in accordance with claim 1 wherein the polymer is polycaprolactone.
Claim 5
Dependent Claim
12 words
A method in accordance with claim 1 wherein the polymer is poly(dodecene-1).
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |