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US4605416A
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Apparatus for hip arthroplasty
Assignee: ARTHROPLASTY RESEARCH & DEVELOPMENT Pty Ltd 441 MOOT STREET HERMANSTAD PRETORIA TRANSVAAL SOUTH AFRICA
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Filing: 1984-08-01
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Granted: 1986-08-12
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Expires: 2004-08-01
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 J. Grobbelaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:01
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: 6
Claim 1
Independent Claim
128 words
The combination of a femoral prosthetic device for use in hip arthroplasty and a greater trochanter fixation device, said femoral prosthetic device comprising a stem, a neck and a ball for use in combination with an acetabular prosthesis, the stem, neck and ball of the femoral prosthetic device being unperforated, said greater trochanter fixation device comprising a loop part and a u-bolt, said loop part having a ring-like portion constructed and arranged to be passed over and thereby attached to the stem without perforating the same, the loop part having a hole formed therein through which the u-bolt passes unhindered, said u-bolt being swingable in said hole, the loop part and the stem being mutually contoured such that the loop part is adopted to snugly embrace the stem.
Claim 2
Dependent Claim
128 words
The combination of a femoral prosthetic device for use in hip arthroplasty and a greater trochanter fixation device, said femoral prosthetic device comprising a stem, a neck and a ball for use in combination with an acetabular prosthesis, the stem, neck and ball of the femoral prosthetic device being unperforated, said greater trochanter fixation device comprising a loop part and a u-bolt, said loop part having a ring-like portion constructed and arranged to be passed over and thereby attached to the stem without perforating the same, the loop part having a hole formed therein through which the u-bolt passes unhindered, said u-bolt being swingable in said hole, the loop part and the stem being mutually contoured such that the loop part is adopted to snugly embrace the stem.
Claim 3
Dependent Claim
31 words
The femoral prosthetic device set forth in claim 1 wherein the stem of the femoral prosthesis has a groove formed thereon for receiving the ring-like portion of the loop part thereon.
Claim 4
Dependent Claim
107 words
A greater trochanter fixation device for use in hip arthroplasty with an unperforated femoral prosthetic device having a stem, a neck and a ball, said fixation device comprising a loop part and u-bolt, the loop part being ring-like in form and constructed and arranged to be passed over and attached to the stem of the femoral prosthetic device without perforating the stem, the neck or the ball thereof, a hole formed in the loop part and sized relative to said u-bolt so that the u-bolt is received unhindered in said hole and is swingable therein, the loop part being constructed and arranged for snugly embracing the stem.
Claim 5
Dependent Claim
107 words
A greater trochanter fixation device for use in hip arthroplasty with an unperforated femoral prosthetic device having a stem, a neck and a ball, said fixation device comprising a loop part and u-bolt, the loop part being ring-like in form and constructed and arranged to be passed over and attached to the stem of the femoral prosthetic device without perforating the stem, the neck or the ball thereof, a hole formed in the loop part and sized relative to said u-bolt so that the u-bolt is received unhindered in said hole and is swingable therein, the loop part being constructed and arranged for snugly embracing the stem.
Claim 6
Dependent Claim
30 words
The greater trochanter fixation device as claimed in claim 3 wherein the u-bolt has an insulating coating on the portion thereof which passes through the hold in the loop part.
References Cited (Backward Citations)
US3924275A
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DE2548077A1
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FR2295730A1
Cited
US4012796A
Cited
US4153953A
Cited
DE2754352A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |