Patent US4733726A successfully refreshed from Google Patents.
EP0648478A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Non-spherical acetabular cup for total hip replacement
Assignee: Bristol Myers Squibb Co
•
Filing: 1994-10-07
•
Granted: —
•
Expires: 2014-10-07
Abstract
Abstract The device is a prosthetic cup prosthesis providing a surface for articulation of the spherical head of a joint arthroplasty. The articulating surface of the cup is the surface of revolution of an arc intersecting the cup equatorial plane and its polar axis, having a center of curvature translated from the spherical center of the cup, rotated about the cup's polar axis. <IMAGE>
Inventors
- 👤 Gene M. Farling
- 👤 Ravindranath H. Shetty
- 👤 Walter H. Ottersberg
- 👤 Roy Y. Hori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2/30767; A61F2/30907; A61F2/3094; A61F2/30965; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30433; A61F2002/30448; A61F2002/30621; A61F2002/30649; A61F2002/30654; A61F2002/30655; A61F2002/30667; A61F2002/30673; A61F2002/3092; A61F2002/30922; A61F2002/30934; A61F2002/30971; A61F2002/30973; A61F2002/3225; A61F2002/3445; A61F2002/3448; A61F2002/3453; A61F2/36; A61F2/3609; A61F2002/3611; A61F2220/00; A61F2220/0025; A61F2220/0041; A61F2220/005; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029; A61F2310/00035; A61F2310/00089; A61F2310/00095; A61F2310/00131; A61F2310/00137; A61F2310/00179; A61F2310/00185; A61F2310/00203; A61F2310/00239; A61F2310/00269; A61F2310/00281; A61F2310/00299; A61F2310/00317; A61F2310/00389; A61F2310/00395; A61F2310/00574; A61F2310/0058; A61F2310/00592; A61F2310/00598; A61F2310/00634; A61F2310/00856; A61F2310/0088
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
70 words
A prosthetic cup prosthesis including a non-spherical surface adapted to accommodate a spherical ball therein for articulating movement against the surface, the surface of the cup being defined by revolution of on arc intersecting an equatorial plane and a polar axis of the cup, the arc having a center of curvature translated from a spherical center of the cup, the arc being rotated about the polar axis for the cup.
Claim 2
Dependent Claim
94 words
A prosthetic cup prosthesis configured for accommodating a spherical ball therein for articulating movement against a non-spherical articulating surface of cup, the cup being defined by coordinate x, y, and z, axes which intersect to define a spherical center of the cup, the articulating surface being defined by an arc struck in an yz plane and intersecting the y axis and the z axis, to define the articulating surface the arc is rotated about the z axis 360 degrees, the arc having a center of curvature translated from the spherical center of the cup.
Claim 3
Dependent Claim
33 words
The prosthetic cup of Claim 2 wherein a space is formed between the non-spherical articulating surface of the cup and the spherical ball, said space accommodating a quantity of a lubricous substance therein.
Claim 4
Dependent Claim
32 words
A prosthetic cup prosthesis having a substantially spherical outer shell and a substantially non-spherical inner shell, wherein the inner shell is configured to accommodate a substantially spherical head for articulating movement therein.
Claim 5
Dependent Claim
48 words
The prosthetic cup of Claim 4 wherein the outer shell includes a spherical center defined by intersecting x, y, and z axes, the inner shell includes a non-spherical articulating surface which is defined by an arc intersecting the y and z axes and rotated about the z axis.
Claim 6
Dependent Claim
24 words
The prosthetic cup of Claim 4 wherein the inner and outer shells of the cup are formed from metal and are metallurgically bonded together.
Claim 7
Dependent Claim
27 words
The prosthetic cup of Claim 4 wherein the inner and outer shells of the cup are formed from metal and adhesively bonded together by an adhesive polymer.
Claim 8
Dependent Claim
23 words
The prosthetic cup of Claim 4 wherein the inner and outer shell of the cup are formed from metal and are riveted together.
Claim 9
Dependent Claim
27 words
The prosthetic cup of Claim 4 wherein the inner and outer shells of the cup are formed from metal and are spaced apart by a polymer shell.
Claim 10
Dependent Claim
28 words
The prosthetic cup of Claim 4 wherein a quantity of lubricous material is carried within a space defined between the non-spherical inner shell and the substantially spherical head.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.