EP0179626A2
Expired / Lapsed
EP
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Improvements relating to bone implants
Assignee: Finsbury Instruments Ltd
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Filing: 1985-10-18
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Granted: —
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Expires: 2005-10-18
Abstract
Abstract 57 A bone implant, for use for example in hip or knee replacement operations, has a first part which includes the articular portion and a stem and a second part in the form of a sleeve. The sleeve is intended for positioning in the bone and is dimensioned so as to be capable of receiving the stem when the letter has, in use, been allowed to sink into the sleeve.
Inventors
- 👤 Michael Antony Tuke
- 👤 Michael Alexander Reykers Freeman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:24
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30907; A61F2/30721; A61F2/30724; A61F2/30734; A61F2/30723; A61F2/32; A61F2/36; A61F2/3662; A61F2/3676; A61F2/38; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2002/30738; A61F2/30771; A61F2002/3085; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00029; A61F2310/00389; A61F2310/00395; A61F2310/00407
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A bone implant intended for incorporation in a human or animal body characterised in that the implant comprises a first part (1; 13) including the articular portion (6; 14) of the implant and a stem (3; 16) and a second part in the form of a sleeve (2; 22; 17) intended for positioning in the bone and dimensioned so as to be capable of receiving the stem (3; 16) when the latter has, in use, been allowed to sink into the sleeve (2; 22; 17).
Claim 2
Dependent Claim
85 words
A bone implant intended for incorporation in a human or animal body characterised in that the implant comprises a first part (1; 13) including the articular portion (6; 14) of the implant and a stem (3; 16) and a second part in the form of a sleeve (2; 22; 17) intended for positioning in the bone and dimensioned so as to be capable of receiving the stem (3; 16) when the latter has, in use, been allowed to sink into the sleeve (2; 22; 17).
Claim 3
Dependent Claim
18 words
2 . A bone implant according to claim 1 wherein the sleeve (2; 22; 17) is of titanium.
Claim 4
Dependent Claim
20 words
3 . A bone implant according to claim 1 or 2 wherein the sleeve (2; 22; 17) is screw threaded.
Claim 5
Dependent Claim
15 words
A bone implant according to claim 3 wherein the screw thread has a rounded edge.
Claim 6
Dependent Claim
53 words
A bone implant according to any one of claims 1 to 4 intended for use in a hip replacement operation, the first part (1) comprising a stem portion (3) and a ball head (6) and the second part being in the form of a sleeve (2; 22) intended for positioning in a femur.
Claim 7
Dependent Claim
68 words
A bone implant according to claim 5, wherein the first part (1) comprises a stem portion (3) with a substantially linear axis, having at least in the upper region of one end thereof, a substantially circular cross-section and a wedge-shaped portion (5) extending medially from the stem portion at or near the opposite end to said one end, the wedge-shaped portion (5) being surmounted by the ball (6).
Claim 8
Dependent Claim
33 words
7, A bone implant according to claim 5 or 6 wherein the stem portion (3) has its lower end (4) conically tapered and the sleeve (2) has a corresponding internal conical taper (10).
Claim 9
Dependent Claim
28 words
A bone implant according to claim 6 wherein the sleeve (22) is open at both ends and includes a slot (24) intended to accommodate the wedge-shaped portion (5).
Claim 10
Dependent Claim
61 words
A bone implant according to claim 1, 2, 3 or 4 intended for use in a knee replacement operation, the first part comprising a tibial implant component (13) having a surface (14) to receive a coacting femoral component and at least one projecting peg (16), and a sleeve (17) for the or each peg (16) intended for positioning in a tibia.
Claim 11
Dependent Claim
37 words
A bone implant according to claim 9 comprising a first part in the form of a tibial implant component (13) having two projecting pegs (16) and a second part comprising a sleeve (17) for each peg (16).
References Cited (Backward Citations)
No citation records indexed.
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