US3862631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical implants
Assignee: DOWN BROS
•
Filing: 1973-05-16
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Granted: 1975-01-28
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Expires: 1993-05-16
Abstract
Abstract A surgical implant for use at a site of bone fracture, especially at an osteotomy site, to draw the two parts of bone together and hold them together during healing. The implant is in the form of a staple having two legs to be driven into the bone, one on either side of the fracture. The two legs can be moved towards each other by means of a nut, once they have been driven into the bone.
Inventors
- 👤 Roger Tilston Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:55
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/064; A61B17/0642
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
182 words
A surgical implant in the form of a staple having only two main leg-carrying parts, the first part having a single elongated substantially straight pointed leg for insertion in a bone on one side of a site of fracture and an annular head in the form of a cylindrical collect, and the second part being generally ''''Lshaped'''' and having a single elongated Substantially straight pointed leg for insertion in the bone on the other side of the site of fracture and a portion that is screw-threaded over at least a part of its length and is passed through the annular head of the first part of the staple, at least one of said legs being inclined one towards the other and the staple additionally comprising a nut screwed onto the screw-threaded portion so as to hold said first part and said second part together by means of which nut said first part and said second part can be moved relative to one another after insertion of the staple into the bone, so as to draw the two parts of the bone together.
Claim 2
Dependent Claim
182 words
A surgical implant in the form of a staple having only two main leg-carrying parts, the first part having a single elongated substantially straight pointed leg for insertion in a bone on one side of a site of fracture and an annular head in the form of a cylindrical collect, and the second part being generally ''''Lshaped'''' and having a single elongated Substantially straight pointed leg for insertion in the bone on the other side of the site of fracture and a portion that is screw-threaded over at least a part of its length and is passed through the annular head of the first part of the staple, at least one of said legs being inclined one towards the other and the staple additionally comprising a nut screwed onto the screw-threaded portion so as to hold said first part and said second part together by means of which nut said first part and said second part can be moved relative to one another after insertion of the staple into the bone, so as to draw the two parts of the bone together.
Claim 3
Dependent Claim
34 words
A surgical implant according to claim 1, wherein the legs of the staple are elliptical in cross-section with the major axes of the ellipses at corresponding points on the two legs being substantially parallel.
Claim 4
Dependent Claim
20 words
A surgical implant according to claim 1, wherein the included angle of the ''''L-shaped'''' second part is less than 90*.
Claim 5
Dependent Claim
14 words
A surgical implant according to claim 3, wherein said included angle is approximately 75*.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |