US4784662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial hip joint
Assignee: Protek AG
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Filing: 1986-10-29
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Granted: 1988-11-15
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Expires: 2006-10-29
Abstract
Abstract The socket is made with a bowl having a spherical cap in the polar region and a part-spherical section which extends from the spherical cap on a larger diameter. The two sections join together at a distance from the top of the bowl socket which is 1/3 the diameter of the spherical cap while the diameter of the part-spherical section is from 1.02 to 1.10 times the diameter of the spherical cap. The diameters of the spherical cap and the part-spherical section intersect the axis of symmetry of the socket body, one on the equatorial plane and the other below the equatorial plane.
Inventors
- 👤 Maurice E. Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:51
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2002/30001; A61F2002/30621; A61F2002/30649; A61F2002/30654; A61F2002/30655; A61F2002/30657; A61F2002/30658; A61F2002/3225; A61F2002/3233; A61F2002/3443; A61F2002/348; A61F2002/3495; A61F2/36; A61F2/3609; A61F2002/3611
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
An artificial hip joint socket for receiving a joint head, said socket having a socket bowl disposed in symmetric relation about a longitudinal axis with a spherical section at a polar region of a first diameter to define a spherical cap of a height equal to 1/3 said first diameter, and an annular part-spherical section extending from said spherical section on a second diameter greater than said first diameter.
Claim 2
Dependent Claim
69 words
An artificial hip joint socket for receiving a joint head, said socket having a socket bowl disposed in symmetric relation about a longitudinal axis with a spherical section at a polar region of a first diameter to define a spherical cap of a height equal to 1/3 said first diameter, and an annular part-spherical section extending from said spherical section on a second diameter greater than said first diameter.
Claim 3
Dependent Claim
64 words
An artificial hip joint socket as set forth in claim 1 wherein said socket bowl extends to an equatorial plane of said spherical section, said first diameter intersects said longitudinal axis of symmetry at a first point on said equatorial plane and said second diameter intersects said longitudinal axis at a second point on a side of said equatorial plane opposite said spherical cap.
Claim 4
Dependent Claim
24 words
An artificial hip joint socket as set forth in claim 1 wherein said second diameter is from 1.02 to 1.10 times said first diameter.
Claim 5
Dependent Claim
33 words
An artificial hip joint as set forth in claim 3 wherein said first diameter is 0.5 millimeters greater than the diameter of a spherical joint head to be received in said socket bowl.
Claim 6
Dependent Claim
37 words
An artificial hip joint as set forth in claim 1 wherein said socket bowl extends to a plane extending perpendicularly of said axis and extending through a point of intersection of said first diameter with said axis.
Claim 7
Dependent Claim
19 words
An artificial hip joint as set forth in claim 5 wherein said part spherical section extends to said plane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |