US5370704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oblong acetabular cup
Assignee: Joint Medical Products Corp
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Filing: 1993-11-24
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Granted: 1994-12-06
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Expires: 2013-11-24
Abstract
Abstract An oblong acetabular cup which includes a cavity for receiving a bearing element is provided. The plane of the opening into the cavity is skewed relative to the prosthesis' longitudinal plane so as to achieve adduction correction, anteversion correction, or both adduction and anteversion correction. In certain preferred embodiments, the prosthesis is constructed from two components which can be oriented with respect to one another to achieve different directions and amounts of anteversion correction. In some embodiments, the two components form a cusp in the outside surface of the prosthesis. Surgical instruments and surgical methods for implanting the prostheses are disclosed.
Inventors
- 👤 Alfred F. DeCarlo, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:20
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1664; A61B17/1666; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/30734; A61F2/32; A61F2/34; A61F2/46; A61F2/4603; A61F2/4609; A61F2/30767; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30242; A61F2002/30245; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30535; A61F2002/30593; A61F2002/30604; A61F2002/30667; A61F2002/3069; A61F2002/30736; A61F2002/30769; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30787; A61F2/3094; A61F2/30942; A61F2002/30952; A61F2002/3401; A61F2002/3403; A61F2002/3406; A61F2002/3443; A61F2002/3453; A61F2002/3454; A61F2002/3459; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0063; A61F2230/0071; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00389; A61F2310/00395; A61F2310/00407
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
An oblong acetabular cup comprising: (a) a first component having (i) a cavity for receiving a bearing element and (ii) an outer surface at least a portion of which is generally spherically-shaped about a first center; (b) a second component, separate from the first component, having an outer surface at least a portion of which is generally spherically-shaped about a second center; and (c) means for joining the first and second components together to form an assembled cup, wherein: said first and second centers are displaced from one another in the assembled cup, and the generally spherically-shaped portions of the outer surfaces of the first and second components meet one another in the assembled cup to form a cusp.
Claim 2
Dependent Claim
119 words
An oblong acetabular cup comprising: (a) a first component having (i) a cavity for receiving a bearing element and (ii) an outer surface at least a portion of which is generally spherically-shaped about a first center; (b) a second component, separate from the first component, having an outer surface at least a portion of which is generally spherically-shaped about a second center; and (c) means for joining the first and second components together to form an assembled cup, wherein: said first and second centers are displaced from one another in the assembled cup, and the generally spherically-shaped portions of the outer surfaces of the first and second components meet one another in the assembled cup to form a cusp.
Claim 3
Dependent Claim
33 words
The oblong acetabular cup of claim 1 wherein the means for joining comprises generally cylindrically-shaped surfaces on the first and second components which overlap and mate with one another in the assembled cup.
Claim 4
Dependent Claim
47 words
The oblong acetabular cup of claim 2 wherein the generally cylindrically-shaped surface on the first component is an outwardly-facing surface and the generally cylindrically-shaped surface on the second component is an inwardly-facing surface which surrounds at least a portion of the outwardly-facing surface in the assembled cup.
Claim 5
Dependent Claim
32 words
The oblong acetabular cup of claim 1 wherein the cavity has a central axis and the central axis intersects the line defined by the first and second centers at an oblique angle.
Claim 6
Independent Claim
121 words
A method for preparing an oblong acetabular cup comprising the steps of: (a) providing a first component having (i) a cavity for receiving a bearing element and (ii) an outer surface at least a portion of which is generally spherically-shaped about a first center; (b) providing a second component having an outer surface at least a portion of which is generally spherically-shaped about a second center; and (c) joining the first and second components together to form an assembled cup, wherein: said first and second centers are displaced from one another in the assembled cup, and the generally spherically-shaped portions of the outer surfaces of the first and second components meet one another in the assembled cup to form a cusp.
Claim 7
Independent Claim
121 words
A method for preparing an oblong acetabular cup comprising the steps of: (a) providing a first component having (i) a cavity for receiving a bearing element and (ii) an outer surface at least a portion of which is generally spherically-shaped about a first center; (b) providing a second component having an outer surface at least a portion of which is generally spherically-shaped about a second center; and (c) joining the first and second components together to form an assembled cup, wherein: said first and second centers are displaced from one another in the assembled cup, and the generally spherically-shaped portions of the outer surfaces of the first and second components meet one another in the assembled cup to form a cusp.
Claim 8
Dependent Claim
30 words
The method of claim 5 wherein the first and second components include generally cylindrically-shaped surfaces which define an axis and step (c) is performed by overlapping and mating said surfaces.
Claim 9
Dependent Claim
59 words
The method of claim 6 wherein the generally cylindrically-shaped surface on the first component is an outwardly-facing surface and the generally cylindrically-shaped surface on the second component is an inwardly-facing surface and wherein step (c) is performed by surrounding at least a portion of the outwardly-facing surface of the first component with the inwardly-facing surface of the second component.
Claim 10
Dependent Claim
37 words
The method of claim 6 wherein step (c) includes the step of selecting an angular offset between the first and second components about the axis, said offset being selected to achieve anteversion correction for the assembled cup.
Claim 11
Dependent Claim
16 words
The method of claim 8 where the angular offset is variable in both magnitude and direction.
Claim 12
Dependent Claim
66 words
An acetabular cup for implantation in a patient's pelvis comprising a body having an outer surface for engagement with bone, said outer surface comprising a first portion which is generally spherically-shaped about a first center and a second portion which is generally spherically-shaped about a second center which is displaced from the first center, said first and second portions meeting one another to form a cusp.
Claim 13
Dependent Claim
66 words
An acetabular cup for implantation in a patient's pelvis comprising a body having an outer surface for engagement with bone, said outer surface comprising a first portion which is generally spherically-shaped about a first center and a second portion which is generally spherically-shaped about a second center which is displaced from the first center, said first and second portions meeting one another to form a cusp.
Claim 14
Dependent Claim
16 words
The acetabular cup of claim 10 wherein the first and second portions have substantially equal radii.
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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) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |