US5725593A
Expired / Lapsed
US
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Total anatomic hip prosthesis
Assignee: Individual
•
Filing: 1996-10-30
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Granted: 1998-03-10
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Expires: 2016-10-30
Abstract
Abstract It is described a total anatomic hip prosthesis including a hemispherical prosthetic acetabulum standing above a hemispherical cap, both provided with anchorage means fitting by pressure the acetabulum in the iliac fossa and, respectively, the cap on femoral head, said cap being linked to the components that hold it permanently on said femoral head.
Inventors
- 👤 Francesco Caracciolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:37
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/3601; A61F2/3603; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/74; A61B17/742; A61B17/80; A61B17/84; A61B17/86; A61B17/8665; A61B17/8695; A61F2/30721; A61F2/30739; A61F2/3662; A61F2/367; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30092; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30138; A61F2002/30153; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30426; A61F2002/30433; A61F2002/30535; A61F2002/30579; A61F2002/30667; A61F2002/30673; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30787; A61F2002/30795; A61F2002/30797; A61F2002/30836; A61F2002/30841; A61F2002/30845; A61F2002/30878; A61F2002/30879; A61F2002/30891; A61F2002/30894; A61F2002/30904; A61F2002/30934; A61F2002/3208; A61F2002/3241; A61F2/34; A61F2002/3401; A61F2002/3403; A61F2002/3412; A61F2002/3417; A61F2/3609; A61F2002/3611; A61F2002/3613; A61F2002/3621; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0017; A61F2230/0019; A61F2250/00; A61F2250/0058
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
Total anatomic hip prosthesis for patients who do not need the femoral head removed, which comprises a hemispherical prosthetic acetabulum, a hemispherical cap insertable into a cavity inside said acetabulum and a stabilizing ring positioned outside said acetabulum and connectable thereto, said acetabulum adapted to fit in said iliac fossa through said stabilizing ring which includes a junction and is provided on its external circumference with hooks, said cap being provided with anchorage means for fitting by pressure on said femoral head, an outside surface of said cap having round projections to reduce the friction with the inner surface of said cavity inside said acetabulum, said cap being further connected with holding means adapted to hold it stably on the femoral head.
Claim 2
Dependent Claim
122 words
Total anatomic hip prosthesis for patients who do not need the femoral head removed, which comprises a hemispherical prosthetic acetabulum, a hemispherical cap insertable into a cavity inside said acetabulum and a stabilizing ring positioned outside said acetabulum and connectable thereto, said acetabulum adapted to fit in said iliac fossa through said stabilizing ring which includes a junction and is provided on its external circumference with hooks, said cap being provided with anchorage means for fitting by pressure on said femoral head, an outside surface of said cap having round projections to reduce the friction with the inner surface of said cavity inside said acetabulum, said cap being further connected with holding means adapted to hold it stably on the femoral head.
Claim 3
Dependent Claim
25 words
The prosthesis according to claim 1, wherein the top of said prosthetic acetabuhm has a control opening or hole for technical and biological application purposes.
Claim 4
Dependent Claim
29 words
The prosthesis according to claim 1, wherin said anchorage means of said cap with said femoral head consists of a notching realized along the whole rim of said cap.
Claim 5
Dependent Claim
23 words
The prosthesis according to claim 3, wherein on the top of said cap there is a seat with a central opening or hole.
Claim 6
Dependent Claim
26 words
The prosthesis according to claim 1, wherein inside said cap there is an alveolate structure with holes which communicate with the outside surface of said cap.
Claim 7
Dependent Claim
24 words
The prosthesis according to claim 1, wherein said round projections are radial grains, segments having a hemispherical or a different shape or sliding blocks.
Claim 8
Dependent Claim
51 words
The prosthesis according to claim 1, wherein said stabilizing ring includes cavities which include an inclined plane placed on the inner surface of said ring which allow the fitting and the passage of radial projections on the external surface of said acetabulum which, rotating, connect said acetabulum to said stabilizing ring.
Claim 9
Dependent Claim
16 words
The prosthesis according to claim 1, wherein said stabilizing ring is made of a "shape-memorizing" material.
Claim 10
Dependent Claim
43 words
The prosthesis according to claim 1, wherein said holding means adapted to hold said cap on said femoral head include a higher blind compensator which is threaded inside and is provided with a head, a stirrup, a lower passing compensator and a tie.
Claim 11
Dependent Claim
26 words
The prosthesis according to claim 9, wherein said tie is provided with a head on a first end and with a threading on the opposite end.
Claim 12
Dependent Claim
75 words
A prosthesis according to claim 9, wherein said tie is inserted in said lower passing compensator, then in said stirrup and sized to penetrate from the top of the femoral diaphysis under the great trochanter, it passes obliquely through the whole higher femoral epiphysis and through the center of the femoral neck and head in order to be screwed to said higher blind compensator, whose head placed in said seat of said cap constrains all.
Claim 13
Dependent Claim
65 words
The prosthesis according to claim 9, wherein said stirrup has a structural C-shape reproducing the shape of the external and lateral cortex of the femur under the great trochanter and wherein said stirrup is provided with a niche with a central and oblong opening apt to house said lower passing compensator, having a flat side and a convex side, and said head of said tie.
Claim 14
Dependent Claim
55 words
The prosthesis according to claim 12, wherein said convex side of said lower passing compensator and said central oblong opening of said niche of said stirrup allow said tie to rotate together with said lower passing compensator with reference to said stirrup to adapt said prosthesis to the specific geometrical characteristics of the patient's femur.
Claim 15
Dependent Claim
21 words
The prosthesis according to claim 1, wherein all components of said prosthesis are made of a defined "inert", highly biocompatible material.
Claim 16
Dependent Claim
13 words
The prosthesis according to claim 1, wherein said round projections are circular rises.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-09 | 2001-09-08 | 2002-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-09 | 2005-09-08 | 2006-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-09 | 2009-09-08 | 2010-03-10 | $7700.00 | Window Closed / Lapsed |