Patent US4297993A successfully refreshed from Google Patents.
US4297993A
Expired / Lapsed
US
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Aid for osteosynthesis
Assignee: Howmedica International Inc
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Filing: 1979-02-13
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Granted: 1981-11-03
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Expires: 1999-02-13
Abstract
Abstract An aid for osteosynthesis has a bone plate containing a plurality of bores for receiving a carrier material containing an antibiotic. Grooves along the center and sides of the plate may also receive antibiotic carrier material. The outside of the carrier material may be roughened to improve fixation of the bone or tissue. Carrier material free areas may be provided on the plate to permit bending. These may be subsequently covered by caps.
Inventors
- 👤 Anton Harle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61L; A61L31/00; A61L31/14; A61L31/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
An aid removably appliable to a bone at an osteosynthesis site to assist in fusing the bone, said aid comprising: an elongated, bar like member for bridging the osteosynthesis site, said member being formed of a material having sufficient strength to provide the necessary stabilizing assistance to the bone, said member having perforations for receiving fasteners removably applying the member to the bone, and said member having at least one indentation in the surface thereof; and a carrier material fixed in said indentation of said member, said material being non-absorbable by body tissue and of constant surface form and integrity, said material having an antibiotic substance uniformly distributed therein and released therefrom at a controlled rate.
Claim 2
Dependent Claim
116 words
An aid removably appliable to a bone at an osteosynthesis site to assist in fusing the bone, said aid comprising: an elongated, bar like member for bridging the osteosynthesis site, said member being formed of a material having sufficient strength to provide the necessary stabilizing assistance to the bone, said member having perforations for receiving fasteners removably applying the member to the bone, and said member having at least one indentation in the surface thereof; and a carrier material fixed in said indentation of said member, said material being non-absorbable by body tissue and of constant surface form and integrity, said material having an antibiotic substance uniformly distributed therein and released therefrom at a controlled rate.
Claim 3
Dependent Claim
29 words
An aid for osteosynthesis according to claim 1 characterized in that the indentation is provided with a configuration which increases the fixing of the carrier material to the member.
Claim 4
Dependent Claim
20 words
An aid for osteosynthesis according to claim 1, characterized in that the outside of the carrier material (14) is roughened.
Claim 5
Dependent Claim
34 words
An aid according to claim 1 characterized in that the member is so formed that the material receiving indentation is provided therein while the desired strength and external shape of the member is maintained.
Claim 6
Dependent Claim
31 words
The aid according to claim 1 wherein said indentation is so located in said member as to provide a carrier material-free area in said member permitting the bending of said member.
Claim 7
Dependent Claim
19 words
An aid for osteosynthesis according to claim 5, characterized by caps covering the carrier material-free areas of said member.
Claim 8
Dependent Claim
18 words
The aid according to claim 1 wherein said indentation comprises at least one additional perforation in said member.
Claim 9
Dependent Claim
17 words
The aid according to claim 1 wherein said indentation comprises at least one groove in said member.
Claim 10
Dependent Claim
28 words
The aid according to claim 1 wherein said material is so formed as to present an exterior surface flush with the surface of said member surrounding said indentation.
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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) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |