US3924274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
An adjunct and method for facilitating implantation of joint prostheses
Assignee: Friatec AG
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Filing: 1974-07-03
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Granted: 1975-12-09
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Expires: 1994-07-03
Abstract
Abstract Implantation of joint prostheses by means of mineral cement adhesives is facilitated by using a temporary barrier shield of biologically compatible material between the cement and the bone tissue to prevent contact until the cement is hardened, after which the barrier material is resorbed by the tissue.
Inventors
- 👤 Gunther Heimke
- 👤 Peter Griss
- 👤 Von Andrian-Werburg Hanns Frhr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:32
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30907; A61F2/32; A61F2/34; A61F2/36; A61F2/3609; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30158; A61F2/30771; A61F2002/3082; A61F2002/30823; A61F2002/3085; A61F2002/30919; A61F2002/30929; A61F2002/3401; A61F2002/3403; A61F2002/3625; A61F2002/3631; A61F2002/365; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0026; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00179; A61F2310/00185; A61F2310/00203; A61F2310/00389; A61F2310/00592; A61F2310/00928; A61F2310/00934; A61L; A61L2430/00; A61L2430/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
An aid for use in the process of implanting of a prosthesis in a bone cavity which has been prepared to receive said prosthesis and which includes the application of a mineral cement to the surface of a prosthesis capable of hardening only in a biologically fluid-free environment, comprising a hollow pouch closed at one end and open at the other composed of a barrier film of biologically compatible impermeable material to be disposed between said applied cement and the entire surface of the prepared cavity within which the prosthesis is to be implanted, said impermeable material being resorbable in a biological environment.
Claim 2
Dependent Claim
103 words
An aid for use in the process of implanting of a prosthesis in a bone cavity which has been prepared to receive said prosthesis and which includes the application of a mineral cement to the surface of a prosthesis capable of hardening only in a biologically fluid-free environment, comprising a hollow pouch closed at one end and open at the other composed of a barrier film of biologically compatible impermeable material to be disposed between said applied cement and the entire surface of the prepared cavity within which the prosthesis is to be implanted, said impermeable material being resorbable in a biological environment.
Claim 3
Dependent Claim
39 words
The invention defined in claim 1, wherein said barrier comprises an elongated pouch of said resorbable impermeable material having a configuration similar to the exterior of that portion of the prosthesis that is to be received in said cavity.
Claim 4
Dependent Claim
29 words
The invention defined in claim 2, wherein the length of said pouch is greater than the length of that portion of the prosthesis to be received in the cavity.
Claim 5
Dependent Claim
31 words
The invention defined in claim 3, wherein said pouch is provided with an outwardly projecting margin surrounding the open end to protect the area surrounding the open end of the cavity.
Claim 6
Dependent Claim
70 words
Method for implanting prostheses in a bone cavity comprising the steps of applying cement to the surface of the prosthesis to be implanted, said cement being of a type incapable of hardening in contact with bone tissue fluid, and inserting a biologically compatible impermeable barrier film of the type which is resorbable in a bIological environment into said cavity between the applied cement and the bone tissue defining said cavity.
Claim 7
Dependent Claim
70 words
Method for implanting prostheses in a bone cavity comprising the steps of applying cement to the surface of the prosthesis to be implanted, said cement being of a type incapable of hardening in contact with bone tissue fluid, and inserting a biologically compatible impermeable barrier film of the type which is resorbable in a bIological environment into said cavity between the applied cement and the bone tissue defining said cavity.
Claim 8
Dependent Claim
35 words
The method of claim 5 which also includes the step of forming said film into the approximate configuration of the interior of the cavity prior to the insertion of the barrier film into the cavity.
Claim 9
Dependent Claim
49 words
The method of claim 6, which also includes the step of forming the film into the shape of an open-ended pouch defined by the interior configuration of the cavity and extending the upper margin of the pouch peripherally outwardly over an area surrounding the open end of the cavity.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |