EP0134105A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for hip arthroplasty
Assignee: Arthroplasty Research & Development Pty Ltd
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Filing: 1984-07-30
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Granted: —
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Expires: 2004-07-30
Abstract
Abstract For use in hip arthroplasty procedures there is provided a femoral prosthesis and a separate greater trochanter fixation device which may optionally be used together depending on the approach selected by the surgeon. The fixation device is a stirrup and u-bolt and the stem of the femoral prosthesis may be grooved to receive the fixation device.
Inventors
- 👤 Charl Johannes Grobbelaar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 05:12
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4607; A61F2/30721; A61F2/30728; A61F2/30739; A61F2/32; A61F2/36; A61F2/3609; A61F2/3662; A61F2/367; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30131; A61F2002/30316; A61F2002/30329; A61F2002/30433; A61F2/30767; A61F2002/30906; A61F2002/4631; A61F2220/00; A61F2220/0025; A61F2220/0041; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
43 words
A femoral prosthetic device for use in hip arthroplasty which comprises a stem, a neck and a peg for a ceramic ball, for use in combination with an acetabular prosthesis and adapted for use optionally in combination with a greater trochanter fixation device.
Claim 2
Dependent Claim
43 words
A femoral prosthetic device for use in hip arthroplasty which comprises a stem, a neck and a peg for a ceramic ball, for use in combination with an acetabular prosthesis and adapted for use optionally in combination with a greater trochanter fixation device.
Claim 3
Dependent Claim
40 words
A femoral prosthetic device for use in hip arthroplasty which comprises a stem, a neck and an integral ball for use in combination with an acetabular prosthesis and adapted for use optionally in combination with a greater trochanter fixation device.
Claim 4
Dependent Claim
40 words
A femoral prosthetic device for use in hip arthroplasty which comprises a stem, a neck and an integral ball for use in combination with an acetabular prosthesis and adapted for use optionally in combination with a greater trochanter fixation device.
Claim 5
Dependent Claim
31 words
A femoral prosthetic device for use in hip arthroplasty as claimed in either one of claims 1 or 2, in which the greater trochanter fixation device comprises a stirrup and u-bolt.
Claim 6
Dependent Claim
47 words
A femoral prosthetic device for use in hip arthroplasty as claimed in either one of claims 1 or 2, the stirrup being in the form of a sling, ring or similar element(s) which can be passed over or otherwise attached to the stem without perforating the stem.
Claim 7
Dependent Claim
36 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 1 to 4, in which the stem of the femoral prosthesis is grooved so as to receive the fixation device.
Claim 8
Dependent Claim
20 words
A femoral prosthetic device for use in hip arthroplasty substantially as herein described and as illustrated in the accompanying drawings.
Claim 9
Dependent Claim
20 words
A femoral prosthetic device for use in hip arthroplasty substantially as herein described and as illustrated in the accompanying drawings.
Claim 10
Dependent Claim
63 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 1 to 6, in which the ball diameter to neck diameter ratio is to be at least two comma three to one, (2,3 : 1), and in which at least part of the surface of the device is given a coating of a ceramic biologically compatible material.
Claim 11
Dependent Claim
30 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 7, in which the ceramic ball ismade of a high purity fine grain and highly polished ceramic.
Claim 12
Dependent Claim
31 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 7, in which the integral ball is coated with a high purity, fine grain and highly polished ceramic.
Claim 13
Dependent Claim
48 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 7 to 9, in which the stem is coated with a coarse grained or coarse textured high purity ceramic material so as to give.a coarse grained or textured surface to the coating.
Claim 14
Dependent Claim
34 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 10, in which there is optimal selection of the metal alloy of the femoral stem whichis resistant to pin hole corrosion.
Claim 15
Dependent Claim
34 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 7 to 11, in which the ball diameter to neck diameter ratio is at least 2,45 : 1.
Claim 16
Dependent Claim
40 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 7 to 12, in which the ceramic coating has been applied by a detonation coating technique using heaf and high velocity onto prepared surfaces.
Claim 17
Dependent Claim
36 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 7 to 13, provided in combination with an acetabular prosthesis which is provided with the external surface having keying formations.
Claim 18
Dependent Claim
27 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 14, in which the keying formations comprise grooves disposed in mutually orthogonal circumferential orientations
Claim 19
Dependent Claim
36 words
A femoral prosthetic device for use in hip arthroplasty as claimed in either one of claims 14 or 15, in which the acetabular prosthesis is of ceramic material of fine grain, high purity and high polish.
Claim 20
Dependent Claim
21 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 16, in which the ceramic is an alumina.
Claim 21
Dependent Claim
32 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 14, in which the external convex surface of the acetabular prosthesis has a coarse grained or coarse textured surface.
Claim 22
Dependent Claim
45 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 1 to 18, provided in comb- comprising a slinging, ring or similar fixation element(s) which can be passed over or otherwise attached to the stem without perforating the stem.
Claim 23
Dependent Claim
24 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 19, in which the fixation device comprises a stirrup and u-bolt.
Claim 24
Dependent Claim
33 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 20, in which the u-bolt has a toothed gripping plate and two nuts screwable on the limbs of the u-bolt.
Claim 25
Dependent Claim
44 words
A femoral prosthetic device for use in hip arthroplasty as claimed in either one of claims 20 or 21, in whicn the stem of the femoral prosthesis is grooves and the groove receives the u-bolt and the stirrup holds the u-bolt in the groove.
Claim 26
Dependent Claim
31 words
A femoral prosthetic device for use in hip arthroplasty as claimed in any one of claims 20 to 22, in which the u-bolt is swingable in a hole in the stirrup.
Claim 27
Dependent Claim
31 words
A femoral prosthetic device for use in hip arthroplasty as claimed in claim 23, in which the u-bolt has an insulating coating where it passes through the hole in the stirrup.
Claim 28
Dependent Claim
23 words
A combination of a femoral prosthesis and a greater trochanter fixation device substantially as herein described and as illustrated in the accompanying drawings.
Claim 29
Dependent Claim
23 words
A combination of a femoral prosthesis and a greater trochanter fixation device substantially as herein described and as illustrated in the accompanying drawings.
Claim 30
Dependent Claim
44 words
A greater trochanter fixation device for use with a femoral prosthetic device in hip arthroplasty, which comprises a sling, ring or similar fixation element(s) which can be passed over or otherwise attached to a stem of the femoral prosthetic device without perforating the stem.
Claim 31
Dependent Claim
44 words
A greater trochanter fixation device for use with a femoral prosthetic device in hip arthroplasty, which comprises a sling, ring or similar fixation element(s) which can be passed over or otherwise attached to a stem of the femoral prosthetic device without perforating the stem.
Claim 32
Dependent Claim
16 words
A greater trochanter fixation device as claimed in claim 26, which comprises a stirrup and u-bolt.
Claim 33
Dependent Claim
27 words
A greater trochanter fixation device as claimed in either one of cliams 27 or 28, in which the u-bolt is swingable in a hole in the stirrup.
Claim 34
Dependent Claim
27 words
A greater trochanter fixation device as claimed in claim 28, in which the u-bolt has an insulating coating where it passes through the hole in the stirrup.
Claim 35
Dependent Claim
16 words
A greater trochanter fixation device substantially as herein described and as illustrated in the accompanying drawings.
Claim 36
Dependent Claim
16 words
A greater trochanter fixation device substantially as herein described and as illustrated in the accompanying drawings.
References Cited (Backward Citations)
No citation records indexed.
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