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US3561437A
Expired / Lapsed
US
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Apparatus for fixing fractures of the femur
Assignee: Individual
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Filing: 1968-03-20
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Granted: 1971-02-09
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Expires: 1988-03-20
Abstract
Abstract Apparatus for fixing fractures of the femur includes a plate which is held by screws to the upper part of the femur and a channel like member fixed to the proximal end of the plate for slidingly engaging a flanged nail which is driven into the head of the femur. A second embodiment substitutes a cannulated pin which is inserted into the intramedullary canal of the femur.
Inventors
- 👤 Jose Luis Orlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:36
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/74; A61B17/742; A61B17/746; A61B17/744
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
179 words
Apparatus for fixing fractures of the femur comprising a nail to be driven into the proximal extremity of the femur, an elongated plate, said plate being curved about its longitudinal axis to define a concave surface and a convex surface, a plurality of holes extending through said plate for accepting screws so that said plate can be secured to the shaft of the femur, a member defining an elongated open channel having upper and lower boundaries fixed at one end of said plate, the longitudinal axes of said channel and said elongated plate defining an obtuse angle, said upper and lower boundaries of said channel extending outwardly beyond said concave surface and outwardly beyond said convex surface so that loads transmitted from said nail to said elongated plate will be distributed uniformly to said plate by said channel member to thereby maximize the supporting capability of said apparatus, said nail being received in said channel for relative sliding movement therebetween along said nail, and said nail and said channel having mutually interlocking cross sections to prevent relative rotation therebetween.
Claim 2
Dependent Claim
179 words
Apparatus for fixing fractures of the femur comprising a nail to be driven into the proximal extremity of the femur, an elongated plate, said plate being curved about its longitudinal axis to define a concave surface and a convex surface, a plurality of holes extending through said plate for accepting screws so that said plate can be secured to the shaft of the femur, a member defining an elongated open channel having upper and lower boundaries fixed at one end of said plate, the longitudinal axes of said channel and said elongated plate defining an obtuse angle, said upper and lower boundaries of said channel extending outwardly beyond said concave surface and outwardly beyond said convex surface so that loads transmitted from said nail to said elongated plate will be distributed uniformly to said plate by said channel member to thereby maximize the supporting capability of said apparatus, said nail being received in said channel for relative sliding movement therebetween along said nail, and said nail and said channel having mutually interlocking cross sections to prevent relative rotation therebetween.
Claim 3
Dependent Claim
113 words
Apparatus for fixing a fracture of the femur comprising a nail to be driven into the upper extremity of the femur, an elongated pin to be inserted into the intramedullary canal of the femur, a member defining an open channel fixed at one end of said elongated pin, the longitudinal axes of said channel and said elongated pin defining an obtuse angle, said nail being received in said channel for relative sliding movement therebetween along said nail, an elongated opening disposed along the longitudinal axis of said elongated pin, said elongated opening being remote from said channel, and said nail and said channel having mutual interlocking cross sections to prevent relative rotation therebetween.
Claim 4
Dependent Claim
113 words
Apparatus for fixing a fracture of the femur comprising a nail to be driven into the upper extremity of the femur, an elongated pin to be inserted into the intramedullary canal of the femur, a member defining an open channel fixed at one end of said elongated pin, the longitudinal axes of said channel and said elongated pin defining an obtuse angle, said nail being received in said channel for relative sliding movement therebetween along said nail, an elongated opening disposed along the longitudinal axis of said elongated pin, said elongated opening being remote from said channel, and said nail and said channel having mutual interlocking cross sections to prevent relative rotation therebetween.
Claim 5
Dependent Claim
64 words
Apparatus as defined in claim 2 wherein said opening is an elongated slot, an elongated fastening member to be inserted in the femur transversely of said elongated pin and be received in said elongated slot, and the length of said slot is substantially greater than the width of said fastening member to permit said elongated pin to move longitudinally relative to said fastening member.
References Cited (Backward Citations)
SU195043A1
Cited
FR893401A
Cited
US2612159A
Cited
US2621653A
Cited
US2761444A
Cited
US3433220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |