Patent US2571893A successfully refreshed from Google Patents.
US3722002A
Expired / Lapsed
US
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Acetabular sockets
Assignee: SSL CC Services Ltd
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Filing: 1972-01-17
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Granted: 1973-03-27
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Expires: 1992-01-17
Abstract
Abstract An acetabular socket having an inner face for receiving the head of a femoral prosthetic component, said inner face being of hemispherical shape extended by a part-cylindrical section of radius equal to the radius of the hemisphere, the axial length of a first circumferential part of the part-cylindrical section being greater than that of a second circumferential part of the part-cylindrical section. Said socket is designed for mounting in the pelvis with the first circumferential part at the posterior to limit backward movement of the femoral prosthetic component, while the shorter, second circumferential part at the anterior allows a good range of forward flexion of the femoral prosthetic component.
Inventors
- 👤 J Charnley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:54
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3008; A61F2/30767; A61F2/30771; A61F2002/3082; A61F2002/3429; A61F2002/348; A61F2002/3493; A61F2/36; A61F2/3609; A61F2002/3611; A61F2/46; A61F2002/4631; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
An acetabular socket having an inner face for receiving the head of a femoral prosthetic component, said inner face being of hemispherical shape extended by a part-cylindrical section of radius equal to the radius of the hemisphere, the axial length of a first circumferential part of the part-cylindrical section being greater than that of a second circumferential part of the part-cylindrical section.
Claim 2
Dependent Claim
62 words
An acetabular socket having an inner face for receiving the head of a femoral prosthetic component, said inner face being of hemispherical shape extended by a part-cylindrical section of radius equal to the radius of the hemisphere, the axial length of a first circumferential part of the part-cylindrical section being greater than that of a second circumferential part of the part-cylindrical section.
Claim 3
Dependent Claim
27 words
An acetabular socket according to claim 1 in which the first circumferential part subtends an angle of from 90* to 180* at the axis of the socket.
Claim 4
Dependent Claim
15 words
An acetabular socket according to claim 2 in which the subtended angle is about 120*.
Claim 5
Dependent Claim
83 words
An acetabular socket according to claim 1 in which the second circumferential part terminates in an arcuate edge lying in a second plane perpendicular to the axis of the socket and the first circumferential part has an edge the central arcuate section of which lies in a second plane perpendicular to said axis and the two end sections of which extend from the central section to the respective ends of the edge of the second circumferential part at acute angles to said planes.
Claim 6
Dependent Claim
22 words
An acetabular socket according to claim 4 in which the perpendicular distance between said planes is from 2 mm. to 10 mm.
Claim 7
Dependent Claim
19 words
An acetabular socket according to claim 5 in which the perpendicular distance between said planes is about 3.5 mm.
Claim 8
Dependent Claim
33 words
An acetabular socket according to claim 4 in which the angle subtended at the axis of the socket by each end section of the edge of the first circumferential part is about 20*.
Claim 9
Dependent Claim
81 words
An acetabular socket according to claim 4 in which the end face of the socket into which the inner face opens has a first part extending radially outwardly from the central section of the edge of the first circumferential part, said first part lying in a plane perpendicular to the axis of the socket, and a second part extending radially outwardly from the edge of the second circumferential part and inclined at an acute angle to the axis of the socket.
Claim 10
Dependent Claim
20 words
An acetabular socket according to claim 8 in which said acute angle of the second circumferential part is about 70*.
Claim 11
Dependent Claim
62 words
An acetabular socket according to claim 8 in which said first and second parts of said end face are joined at each of their ends by triangular face sections each bounded by a junction line with said first part, a junction line with said second part and a respective one of said end sections of said edge of said first circumferential part.
Claim 12
Dependent Claim
44 words
An acetabular socket according to claim 10 in which said end face of said socket is bounded by an annular flange lying in the plane of said first part of said end face, the radially outer edge of said flange being formed with serrations.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |