US4429690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate for broken bone fixation
Assignee: CISE Centro Informazioni Studi e Esperienze SpA
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Filing: 1981-08-24
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Granted: 1984-02-07
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Expires: 2001-08-24
Abstract
Abstract A plate for the fixation of a broken bone comprises two longitudinal bars jointed by an array of humped bridges (cross-brackets) evenly spaced apart and having holes to house set cortical screws.
Inventors
- 👤 Giancarlo Angelino-Pievani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:13
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
A plate for treatment of bone fractures by joining parts of a broken bone across the fracture line by screw attachment to the parts to be joined comprising a framework plate including a pair of longitudinal bars having convex undersurfaces supporting said framework plate while lying in a longitudal direction along the broken bone with each of said bars supported on opposite sides of the fracture in said broken bone, a plurality of cross-bracket bridging members with each of said members integrally connected to each of said longitudinal bars and extending therebetween, said cross-bracket bridging members spaced along said longitudinal bars and from each other with open spaces therebetween, each of said bridging members having a hole therethrough for holding a screw for attachment to a bone part.
Claim 2
Dependent Claim
128 words
A plate for treatment of bone fractures by joining parts of a broken bone across the fracture line by screw attachment to the parts to be joined comprising a framework plate including a pair of longitudinal bars having convex undersurfaces supporting said framework plate while lying in a longitudal direction along the broken bone with each of said bars supported on opposite sides of the fracture in said broken bone, a plurality of cross-bracket bridging members with each of said members integrally connected to each of said longitudinal bars and extending therebetween, said cross-bracket bridging members spaced along said longitudinal bars and from each other with open spaces therebetween, each of said bridging members having a hole therethrough for holding a screw for attachment to a bone part.
Claim 3
Dependent Claim
52 words
The plate of claim 1 wherein each of said bridging members form generally an arch between said longitudinal bars which raises the bottom surface said members between said bars above the bone surface portion encompased by said longitudinal bars whereby contact by the bottom surface with the bone surface portion is avoided.
Claim 4
Dependent Claim
15 words
The plate of claim 2 wherein said longitudinal bars each have a solid rod cross-section.
Claim 5
Dependent Claim
20 words
The plate of claim 2 wherein each of said holes in said bridging members is countersunk in said bridging member.
References Cited (Backward Citations)
CA451868A
Cited
US2406832A
Cited
US2501978A
Cited
US2580821A
Cited
US3565066A
Cited
DE2131422A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |