US5108399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for osteosynthesis and process for producing it
Assignee: Boehringer Ingelheim GmbH
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Filing: 1989-09-15
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Granted: 1992-04-28
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Expires: 2009-09-15
Abstract
Abstract A resorbable osteosynthesis device consisting of: 1) a resorbable plate, in which the side of the plate facing the bone is coated with calcium phosphate and/or hydroxyl apatite; and 2) preferably, a resorbable fixing device consisting of a threaded bolt which is optionally coated with calcium phosphate and/or hydroxyl apatite, and a nut which can be fitted onto the threaded bolt.
Inventors
- 👤 Jurgen Eitenmuller
- 👤 Heinz Offergeld
- 👤 Walter Michaeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:30
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8033; A61B17/8047; A61B17/84; A61B17/86; A61B17/8605; A61B17/866; A61L; A61L31/00; A61L31/04; A61L31/06; A61L31/08; A61L31/082; A61L31/086; A61L31/12; A61L31/125; A61L31/14; A61L31/148; A61L31/16; A61B2017/00004; A61B90/00; A61B90/03; A61B2090/037; A61B90/39; A61F; A61F2/00; A61F2/0077; A61F2310/00; A61F2310/00389; A61F2310/00592; A61F2310/00796; A61L2300/00; A61L2300/10; A61L2300/102; A61L2300/104; A61L2300/40; A61L2300/404; A61L2430/00; A61L2430/02; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/908
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
67 words
A resorbable osteosynthesis device comprising: a) a resorbable plate; b) a coating on the plate comprising calcium phosphate, hydroxyl apatite, or a combination of calcium phosphate and hydroxyl apatite, wherein the coating is present on the portion of the plate which will be in contact with a fractured bone when the plate is in use; and c) resorbable means for fastening the plate to a fractured bone.
Claim 2
Dependent Claim
67 words
A resorbable osteosynthesis device comprising: a) a resorbable plate; b) a coating on the plate comprising calcium phosphate, hydroxyl apatite, or a combination of calcium phosphate and hydroxyl apatite, wherein the coating is present on the portion of the plate which will be in contact with a fractured bone when the plate is in use; and c) resorbable means for fastening the plate to a fractured bone.
Claim 3
Dependent Claim
43 words
A resorbable osteosynthesis device as recited in claim 1 wherein the resorbable means for fastening the plate to a fractured bone is a fixing device comprising: a) a resorbable threaded bolt; and b) a resorbable nut capable of screwing onto the threaded bolt.
Claim 4
Dependent Claim
29 words
A resorbable osteosynthesis device as recited in claim 2 wherein the threaded bolt is coated with calcium phosphate, hydroxyl apatite, or a combination of calcium phosphate and hydroxyl apatite.
Claim 5
Dependent Claim
25 words
A resorbable osteosynthesis device as recited in claim 1 wherein the plate is constructed from a polymer or copolymer based on poly-L-lactide, poly-D,L-lactide or polyglycolide.
Claim 6
Dependent Claim
15 words
A resorbable osteosynthesis device as recited in claim 1 wherein the plate comprises reinforcing fibers.
Claim 7
Dependent Claim
22 words
A resorbable osteosynthesis device as recited in claim 1 wherein the plate is additionally coated with a film comprising colloidally distributed silver.
Claim 8
Dependent Claim
20 words
A resorbable osteosynthesis device as recited in claim 1 wherein the plate is additionally coated with a pharmaceutically active material.
Claim 9
Dependent Claim
20 words
A resorbable osteosynthesis device as recited in claim 7 wherein the pharmaceutically active material is a bactericidal or bacteriostatic agent.
Claim 10
Dependent Claim
37 words
A resorbable osteosynthesis device as recited in claim 1 wherein the plate comprises: i) a central portion with reinforcements running parallel to the longitudinal direction of the plate, and ii) widened portions about the means for fastening.
Claim 11
Dependent Claim
34 words
A resorbable osteosynthesis device as recited in claim 1 wherein the portion of the plate which will be in contact with a fractured bone when the plate is in use, has a transverse convexity.
Claim 12
Dependent Claim
21 words
A resorbable osteosynthesis device as recited in claim 2 wherein the threaded bolt comprises a means for turning the threaded bolt.
Claim 13
Dependent Claim
17 words
A resorbable osteosynthesis device as recited in claim 2 wherein the threaded bolt produces an X-ray contrast.
Claim 14
Dependent Claim
17 words
A resorbable osteosynthesis device as recited in claim 2 wherein the threaded bolt has a frangible point.
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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) | 1995-04-28 | 1995-10-28 | 1996-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-28 | 1999-10-28 | 2000-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-28 | 2003-10-28 | 2004-04-28 | $7700.00 | Window Closed / Lapsed |