US5437674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Osteosynthesis device
Assignee: Individual
•
Filing: 1993-08-25
•
Granted: 1995-08-01
•
Expires: 2013-08-25
Abstract
Abstract A device for the holding and compression of the fragments of a fractured bone, the device including a screw whose tip is pyramidal or conical and whose body is provided, at a distal end thereof, with an outside thread, wherein the head of the screw has a plurality of foldable small wings integral with the body and wherein the screw has a device for folding the small wings. The device is useful particularly for fractures of the scaphoid, of the medial malleolus, Garden fractures 1 and 2 of the neck of the femur, pertrochanterian fractures of the femur, and generally, for fractures of small bones, and for putting in place hip or shoulder stops.
Inventors
- 👤 Alexandre Worcel
- 👤 Eric Kovacs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:54
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/72; A61B17/7216; A61B17/7225; A61B17/7233; A61B17/7258; A61B17/7266; A61B17/84; A61B17/86; A61B17/8685; A61B17/686; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/3601; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30579
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
An osteosynthesis device for holding together in compression two parts of a fractured bone comprising: a screw having a tip which is one of a pyramidal and conical shape and which has a body provided, at the distal end thereof, with an outside thread for engaging the bone, wherein the screw has a head which includes a plurality of foldable wings integral with the body and includes a mechanism which is engaged with said screw and the wings for folding the wings.
Claim 2
Dependent Claim
82 words
An osteosynthesis device for holding together in compression two parts of a fractured bone comprising: a screw having a tip which is one of a pyramidal and conical shape and which has a body provided, at the distal end thereof, with an outside thread for engaging the bone, wherein the screw has a head which includes a plurality of foldable wings integral with the body and includes a mechanism which is engaged with said screw and the wings for folding the wings.
Claim 3
Dependent Claim
20 words
Device according to claim 1, wherein the wings are integral with a proximal end of the body of the screw.
Claim 4
Dependent Claim
15 words
Device according to claim 1, wherein the body of the screw is cylindrical and hollow.
Claim 5
Dependent Claim
23 words
Device according to claim 3, wherein the head of the screw includes axial incisions which separate adjoining wings of the plurality of wings.
Claim 6
Dependent Claim
44 words
Device according to claim 3, wherein the mechanism for folding the wings also includes an inner cylindrical element which is axially displaceable in relation to the body, and said inner cylindrical element includes a device for acting on a free end of the wings.
Claim 7
Dependent Claim
40 words
Device according to claim 5, wherein the mechanism for folding the wings comprises first threads located on the inner face of the body of the screw and the complementary threads located on the outer face of the inner cylindrical element.
Claim 8
Dependent Claim
23 words
Device according to claim 1, which comprises a cylindrical central channel having an axis corresponding to that of the body of the screw.
Claim 9
Dependent Claim
19 words
Device according to claim 1, which comprises a plate which includes a barrel in which the screw is inserted.
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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) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |