US4745913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the stabilization of bone fractures
Assignee: Individual
•
Filing: 1985-11-07
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Granted: 1988-05-24
•
Expires: 2005-11-07
Abstract
Abstract The external device for fixing the pins to be inserted into the bone fragments comprises at least one carrier bar, a screw for securing the pins to the carrier bar, a stirrup and a washer for securing the screw to the carrier bar. The stirrup and the washer have at least on the surfaces in contact with the rough surfaces of the bar a deformable lining. The device permits the adjustment of the different parts and improved stabilization of the pins.
Inventors
- 👤 Enrico Castaman
- 👤 Lino Borghettino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/60; A61B17/64; A61B17/6416; A61B17/66
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
An external device for use in orthopedic surgery for fixing pins adapted to be secured to bone fragments, comprising a pivot block (1, 26), at least one carrier bar (4, 8, 19) fixed to said pivot block, bone-traversing pins adapted for insertion into bone fragments, at least one first element (12) for securing the pins to said carrier bar, said carrier bar having in part a rough surface, means for locking said first element (12) to said carrier bar, said means consisting of a stirrup (14) and a washer (15) located on either side of said carrier bar, said stirrup and said washer having at least the surface in contact with said rough surface of said bar covered with a deformable lining, a second element (13) for clamping said stirrup and said washer to said first element (12).
Claim 2
Dependent Claim
138 words
An external device for use in orthopedic surgery for fixing pins adapted to be secured to bone fragments, comprising a pivot block (1, 26), at least one carrier bar (4, 8, 19) fixed to said pivot block, bone-traversing pins adapted for insertion into bone fragments, at least one first element (12) for securing the pins to said carrier bar, said carrier bar having in part a rough surface, means for locking said first element (12) to said carrier bar, said means consisting of a stirrup (14) and a washer (15) located on either side of said carrier bar, said stirrup and said washer having at least the surface in contact with said rough surface of said bar covered with a deformable lining, a second element (13) for clamping said stirrup and said washer to said first element (12).
Claim 3
Dependent Claim
21 words
The device according to claim 1 wherein said first element (12) is a screw and said second element is a nut.
Claim 4
Dependent Claim
93 words
The device according to claim 1 which comprises two carrier bars, each carrier bar comprises a tracked structure, one tracked structure has a stud (7) connecting said tracked structure to said first element and a section of said connecting portion has reduced cross sectional area, wherein said stud (7) has threaded portions (10, 10 1 ) having opposed flat portions, said pivot block is fixed to a socket (6), said socket has a threaded portion, the threads of said stud (10, 10 1 ) being operatively engageable with the threads of said socket.
Claim 5
Dependent Claim
21 words
The device according to claim 3 wherein said socket has an external portion adapted to be connected to said pivot block.
Claim 6
Dependent Claim
39 words
The device according to claim 1 which comprises one carrier bar (19), said carrier bar (19) carries an alternate first element (20) for securing a plurality of pins (17) generally perpendicular to the longitudinal axis of said carrier bar.
Claim 7
Dependent Claim
46 words
The device according to claim 5 wherein the pivot block (26) has a socket (25) fixed thereto, said carrier bar has a threaded portion (24) and has an eye (23) to receive said alternate first element, said threaded portion (24) being fixed to said eye (25).
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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) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |