US3667456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hip-joint operations
Assignee: SSL CC Services Ltd
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Filing: 1970-11-19
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Granted: 1972-06-06
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Expires: 1990-11-19
Abstract
Abstract A method for re-attaching the great trochanter to the femur in which the faces to be joined are shaped respectively by matching male and female reamers so that one fits into the other to create an interlocking action. Suitable male and female reamers, preferably of conical or frusto-conical form are described. together with holders for the reamers.
Inventors
- 👤 John Charnley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1664; A61B17/1668; A61B17/1666
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
77 words
A method of re-attaching The great trochanter to the femur comprising the steps of shaping a face of said great trochanter and a face of said femur one by a male reamer and the other by a female reamer to form complementary socket and spigot formations; placing said faces one on the other so that said socket and spigot formations interlock; and mechanically securing said great trochanter and femur in their relative positions with said formations interlocked.
Claim 2
Independent Claim
77 words
A method of re-attaching The great trochanter to the femur comprising the steps of shaping a face of said great trochanter and a face of said femur one by a male reamer and the other by a female reamer to form complementary socket and spigot formations; placing said faces one on the other so that said socket and spigot formations interlock; and mechanically securing said great trochanter and femur in their relative positions with said formations interlocked.
Claim 3
Dependent Claim
17 words
A method as claimed in claim 1 wherein said socket and spigot formations are of conical form.
Claim 4
Dependent Claim
17 words
A method as claimed in claim 1 wherein said socket and spigot formations are of frusto-conical form.
Claim 5
Dependent Claim
26 words
A method as claimed in claim 1 wherein said spigot formation is formed on said femur and said socket formation is formed on said great trochanter.
Claim 6
Dependent Claim
14 words
A method as claimed in claim 2 wherein said cone is of obtuse angle.
References Cited (Backward Citations)
GB549999A
Cited
US2414882A
Cited
US2381050A
Cited
FR1020421A
Cited
FR1031888A
Cited
US3412733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |