US3955568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool and method for use in total hip implant
Assignee: Individual
•
Filing: 1975-04-17
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Granted: 1976-05-11
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Expires: 1995-04-17
Abstract
Abstract A tool for inserting a prosthetic femoral head into and for removing it from a prosthetic hip socket, the tool including a handle, means for engaging a prosthetic femoral head and neck therebelow and a rod connecting the handle with the engaging means. A method of inserting a prosthetic femoral head into and removing it from a prosthetic hip socket in which the femoral head and its neck below are engaged with a twistable tool, followed by twisting the outer end of the tool and twisting the femoral head so as to move it transversely into or out of the hip socket.
Inventors
- 👤 Alonzo J. Neufeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4607; A61F2/32; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30131; A61F2/34; A61F2002/344; A61F2/36; A61F2/3609; A61F2002/3611; A61F2002/3625; A61F2/4637; A61F2002/4641; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
For use in total hip implant surgery, a tool for inserting a prosthetic femoral head into and for removing from a prosthetic hip socket, comprising: a handle, an intermediate portion and an inner end portion, means on said inner end portion having two spaced members to engage the neck of the femoral head and to engage the femoral head extending from the femur and for applying a twisting motion to the head and femur, the intermediate portion connecting the handle and the inner end portion and extending in a direction substantially perpendicular to said two spaced members, said inner end portion being connected to said intermediate portion by a portion offset with respect to said intermediate portion.
Claim 2
Dependent Claim
117 words
For use in total hip implant surgery, a tool for inserting a prosthetic femoral head into and for removing from a prosthetic hip socket, comprising: a handle, an intermediate portion and an inner end portion, means on said inner end portion having two spaced members to engage the neck of the femoral head and to engage the femoral head extending from the femur and for applying a twisting motion to the head and femur, the intermediate portion connecting the handle and the inner end portion and extending in a direction substantially perpendicular to said two spaced members, said inner end portion being connected to said intermediate portion by a portion offset with respect to said intermediate portion.
Claim 3
Dependent Claim
36 words
The invention according to claim 1 in which: said handle is of triangle shape, the triangle having a gripping base at the outer end, said base being generally perpendicular to the direction of the intermediate portion.
Claim 4
Dependent Claim
14 words
The invention according to claim 1 in which: said intermediate portion is a rod.
Claim 5
Dependent Claim
47 words
The invention according to claim 3 in which: said means on said inner end portion includes a U-shaped member having the legs of the U extending transversely with respect to the intermediate portion, the legs of the U engaging the neck and head during the twisting motion.
Claim 6
Dependent Claim
35 words
The invention according to claim 4 in which: said U-shaped member is connected to said intermediate portion by a portion offset with respect to said rod and joining an end of the proximate U leg.
Claim 7
Dependent Claim
25 words
The invention according to claim 4 in which: said handle, said intermediate portion and said end portion are made of a single piece of rod.
Claim 8
Dependent Claim
58 words
The invention according to claim 6 in which: said handle has a gripping member extending in a direction substantially perpendicular to said intermediate portion, said intermediate portion extending substantially perpendicular to the direction of said U legs of said end portion, and the axis of said intermediate portion substantially bisecting said handle gripping member and said U legs.
Claim 9
Dependent Claim
24 words
The invention according to claim 1 in which: said handle having a gripping member extending in a direction substantially perpendicular to said intermediate portion.
Claim 10
Dependent Claim
47 words
The invention according to claim 1 in which: said means on said inner end portion includes a U-shaped member having the legs of the U extending transversely with respect to the intermediate portion, the legs of the U engaging the neck and head during the twisting motion.
Claim 11
Dependent Claim
161 words
In total hip implant surgery, a method of inserting a prosthetic femoral head into and removing it from a prosthetic hip socket, comprising: engaging the neck of the femoral head and the head with an inner end of an elongated tool, wherein the tool comprises, a handle, an intermediate portion and an inner end portion, means on said inner end portion having two spaced members to engage the neck of the femoral head and to engage the femoral head extending from the femur and for applying a twisting motion to the head and femur, the intermediate portion connecting the handle and the inner end portion and extending in a direction substantially perpendicular to said two spaced members, said inner end portion being connected to said intermediate portion by a portion offset with respect to said intermediate portion, twisting the outer end of the tool, twisting the femoral head and the femur, and moving the head transversely with respect to the socket.
Claim 12
Dependent Claim
161 words
In total hip implant surgery, a method of inserting a prosthetic femoral head into and removing it from a prosthetic hip socket, comprising: engaging the neck of the femoral head and the head with an inner end of an elongated tool, wherein the tool comprises, a handle, an intermediate portion and an inner end portion, means on said inner end portion having two spaced members to engage the neck of the femoral head and to engage the femoral head extending from the femur and for applying a twisting motion to the head and femur, the intermediate portion connecting the handle and the inner end portion and extending in a direction substantially perpendicular to said two spaced members, said inner end portion being connected to said intermediate portion by a portion offset with respect to said intermediate portion, twisting the outer end of the tool, twisting the femoral head and the femur, and moving the head transversely with respect to the socket.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |