Patent US4042980A successfully refreshed from Google Patents.
US4042980A
Expired / Lapsed
US
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Endoprosthetic shoulder joint device
Assignee: National Research Development Corp UK
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Filing: 1976-03-10
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Granted: 1977-08-23
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Expires: 1996-03-10
Abstract
Abstract An endoprosthetic shoulder joint device has a scapular component of generally L-shape, usually with one arm longer than the other, and formed with a spherical concave bearing surface in its inner face to extend at least over the free end portion of the longer arm. If the concave surface extends in the shorter arm, the latter arm is thickened for this purpose. The concave surface can open into the edges of the L-shape, the longer arm is usually of cranked form, and the outer face is relieved for cement securement keying. The associated humeral component can be of conventional ball-headed, stemmed form, but is preferred as a spherical segmental form which is solid with a short stem projecting from its chordal face, or hollowed and grooved in its interior.
Inventors
- 👤 Sydney Alan Vasey Swanson
- 👤 Brian Arnold Roper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/40; A61F2/4003; A61F2/4081; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30159; A61F2002/30168; A61F2/30767; A61F2/30771; A61F2002/3082; A61F2002/30822; A61F2002/30878; A61F2002/30879; A61F2002/30891; A61F2002/30892; A61F2/46; A61F2002/4631; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0043
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
An endoprosthetic shoulder joint device, comprising: a humeral component including a bearing part defining a substantially part-spherical, convex bearing surface and a scapular component including a generally L-shaped member having one arm of said L-shaped member longer than the other such arm, having its inner face formed to define a substantially part-spherical, concave bearing surface of which at least part lies in said one arm, and having said one arm of cranked form at least in its outer face; said bearing surfaces being engaged for mutual articulation between said components; and said part and said member being adapted remotely from said bearing surfaces for respective securement to the humerus and scapular.
Claim 2
Dependent Claim
111 words
An endoprosthetic shoulder joint device, comprising: a humeral component including a bearing part defining a substantially part-spherical, convex bearing surface and a scapular component including a generally L-shaped member having one arm of said L-shaped member longer than the other such arm, having its inner face formed to define a substantially part-spherical, concave bearing surface of which at least part lies in said one arm, and having said one arm of cranked form at least in its outer face; said bearing surfaces being engaged for mutual articulation between said components; and said part and said member being adapted remotely from said bearing surfaces for respective securement to the humerus and scapular.
Claim 3
Dependent Claim
23 words
A device according to claim 1 wherein said concave bearing surface is wholly formed in the free end porition of said one arm.
Claim 4
Dependent Claim
35 words
A device according to claim 1 wherein said other arm is thicker than said one arm as seen in the side view of said L-shape, and said concave bearing surface extends into both said arms.
Claim 5
Dependent Claim
20 words
A device according to claim 1 wherein said concave bearing surface opens into the side edge faces of said member.
Claim 6
Dependent Claim
26 words
A device according to claim 1 wherein said adaption of said member comprises a relieved configuration which is shallow relative to the thickness of such member.
Claim 7
Dependent Claim
39 words
A device according to claim 1 wherein said humeral component part comprises a substantially spherical segmental solid having a stem projecting from the chordal face of such solid, said stem being no longer than the diameter of said solid.
Claim 8
Dependent Claim
28 words
A device according to claim 1 wherein said humeral component part comprises a hollowed cap of substantially spherical segmental external shape, the hollow of said cap being grooved.
Claim 9
Dependent Claim
135 words
The use of an endoprosthetic shoulder joint device including a first component having a bearing part defining a substantially part-spherical, convex bearing surface; and a second component having a generally L-shaped member having its inner face formed to define a substantially part-spherical, concave bearing surface therein, which concave surface is complementary with said convex surface, said use comprising: securing said first component to the humerus to substitute said convex surface for the natural articular surface thereof at the humero - scapular joint; securing said second component to the scapular with one arm of said L-shaped member located on the underside of the acromion, and the other arm of said L-shaped member extending across the site of the scapular glenoid cavity, to substitute said concave surface for said cavity; and bringing said surfaces into articular engagement.
Claim 10
Dependent Claim
135 words
The use of an endoprosthetic shoulder joint device including a first component having a bearing part defining a substantially part-spherical, convex bearing surface; and a second component having a generally L-shaped member having its inner face formed to define a substantially part-spherical, concave bearing surface therein, which concave surface is complementary with said convex surface, said use comprising: securing said first component to the humerus to substitute said convex surface for the natural articular surface thereof at the humero - scapular joint; securing said second component to the scapular with one arm of said L-shaped member located on the underside of the acromion, and the other arm of said L-shaped member extending across the site of the scapular glenoid cavity, to substitute said concave surface for said cavity; and bringing said surfaces into articular engagement.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |