Patent EP0416734A1 successfully refreshed from Google Patents.
US3815157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic shoulder joint devices
Assignee: National Research Development Corp UK
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Filing: 1972-11-22
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Granted: 1974-06-11
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Expires: 1992-11-22
Abstract
Abstract An endoprosthetic shoulder joint device has ball and socket components held in captive bearing engagement and demountably connectable with scapular and humeral fixation components. This facilitates use in that the fixation components can be secured first and then subsequently interconnected by a pre-assembled bearing assembly. The bearing assembly of ball and socket components can itself be demountable, and these components can be interchangeably connected with the two fixation components.
Inventors
- 👤 J Skorecki
- 👤 V Wheble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:54
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/40; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30405; A61F2002/30476; A61F2002/30495; A61F2002/30507; A61F2002/30621; A61F2002/30649; A61F2002/30662; A61F2/4014; A61F2002/4018; A61F2002/4022; A61F2/4081; A61F2002/4085; A61F2220/00; A61F2220/0025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
202 words
An endoprosthetic shoulder joint device comprising: a scapular fixation component; a humeras fixation component; a ball component in the form of a shaft demountably connected at one end with one of said fixation components, terminating at its other end in a spherically shaped ball part, and conically tapered at said other end convergently towards said ball part; a socket component including a base part demountably connected with the other of said fixation components, and formed, remotely from such connection, with a hemispherically-shaped first concave bearing surface area of like radius with and located in mutual engagement with said ball part; and said socket component further including an annular collar part demountably connected with said base part, formed with a radially innermost spherically-sectorally-shaped second concave bearing surface area of like radius with and located in mutual bearing engagement with said ball part as a sector of a common sphere with said first concave bearing surface area, and being concavely conically inclined towards the rim of said second concave bearing surface area; said ball component conical tapering and said socket component collar part conical inclination each having an apex coincident with the spherical centre of the bearing engagement between said ball and socket components.
Claim 2
Dependent Claim
202 words
An endoprosthetic shoulder joint device comprising: a scapular fixation component; a humeras fixation component; a ball component in the form of a shaft demountably connected at one end with one of said fixation components, terminating at its other end in a spherically shaped ball part, and conically tapered at said other end convergently towards said ball part; a socket component including a base part demountably connected with the other of said fixation components, and formed, remotely from such connection, with a hemispherically-shaped first concave bearing surface area of like radius with and located in mutual engagement with said ball part; and said socket component further including an annular collar part demountably connected with said base part, formed with a radially innermost spherically-sectorally-shaped second concave bearing surface area of like radius with and located in mutual bearing engagement with said ball part as a sector of a common sphere with said first concave bearing surface area, and being concavely conically inclined towards the rim of said second concave bearing surface area; said ball component conical tapering and said socket component collar part conical inclination each having an apex coincident with the spherical centre of the bearing engagement between said ball and socket components.
Claim 3
Dependent Claim
16 words
A device according to claim 1 wherein each of said demountable connections is of nut-and-bolt form.
Claim 4
Dependent Claim
24 words
A device according to claim 1 wherein said components are formed to provide smooth contiguous outermost surface portions at each of said demountable connections.
Claim 5
Dependent Claim
23 words
A device according to claim 1 wherein said ball and socket components are respectively demountably connected with said scapular and humeral fixation components.
Claim 6
Dependent Claim
89 words
An endoprosthetic shoulder joint device comprising: a scapular fixation component in the form of an ovoid-shaped plate having three elongated intracancellous fixation members projecting from a common face thereof in a mutually divergent manner; a humeral fixation component including an elongated tapered intramedullary stem; a ball component demountably connected with one of said fixation components; a socket component demountably connected with the other of said fixation components; and said ball and socket components being interconnected with part of the former held captive in the latter in mutual bearing engagement.
Claim 7
Dependent Claim
89 words
An endoprosthetic shoulder joint device comprising: a scapular fixation component in the form of an ovoid-shaped plate having three elongated intracancellous fixation members projecting from a common face thereof in a mutually divergent manner; a humeral fixation component including an elongated tapered intramedullary stem; a ball component demountably connected with one of said fixation components; a socket component demountably connected with the other of said fixation components; and said ball and socket components being interconnected with part of the former held captive in the latter in mutual bearing engagement.
Claim 8
Dependent Claim
71 words
An endoprosthetic shoulder joint device comprising: a scapular fixation component; a humeral fixation component; a ball component demountably connected with one of said fixation components; and a socket component demountably connected with the other of said fixation components; said ball and socket components being interconnected with part of the former held captive in the latter in mutual bearing engagement; and said demountable connections being of like form to permit interchange therebetween.
Claim 9
Dependent Claim
71 words
An endoprosthetic shoulder joint device comprising: a scapular fixation component; a humeral fixation component; a ball component demountably connected with one of said fixation components; and a socket component demountably connected with the other of said fixation components; said ball and socket components being interconnected with part of the former held captive in the latter in mutual bearing engagement; and said demountable connections being of like form to permit interchange therebetween.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |