Patent US4332037A successfully refreshed from Google Patents.
US4332037A
Expired / Lapsed
US
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Artificial joint
Assignee: New York University Langone Orthopedic Hospital
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Filing: 1980-12-15
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Granted: 1982-06-01
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Expires: 2000-12-15
Abstract
Abstract An artificial joint for implantation into a living body comprising two members held together by magnetic forces of attraction with the magnetic lines of force running substantially along the direction of the pivotal axis and transversely across the primary direction of movement of the two members.
Inventors
- 👤 Ira Esformes
- 👤 Frederick J. Kummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:00
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/38; A61F2/3804; A61F2/42; A61F2/4241; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30079; A61F2002/30621; A61F2002/30624; A61F2210/00; A61F2210/009
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
96 words
An artificial joint for implantation into a living body comprising: (A) a first component, and (B) a second component which cooperatively engages said first component, forming a point of engagement having a pivotal axis about which said two components pivot in a primary direction of movement, and (C) a magnet positioned in at least one of said two components with the magnetic lines of force flowing substantially along said pivotal axis and transversely across said primary direction in which said two components pivot so that said two components are attracted to one another when cooperatively engaged.
Claim 2
Dependent Claim
96 words
An artificial joint for implantation into a living body comprising: (A) a first component, and (B) a second component which cooperatively engages said first component, forming a point of engagement having a pivotal axis about which said two components pivot in a primary direction of movement, and (C) a magnet positioned in at least one of said two components with the magnetic lines of force flowing substantially along said pivotal axis and transversely across said primary direction in which said two components pivot so that said two components are attracted to one another when cooperatively engaged.
Claim 3
Dependent Claim
15 words
An artificial joint of claim 1 wherein a magnet is positioned in both said components.
Claim 4
Dependent Claim
20 words
An artificial joint of claim 1 wherein said first component is recessed to receive said second component in cooperative engagement.
Claim 5
Dependent Claim
21 words
An artificial joint of claim 3 wherein at least one magnet is positioned adjacent the recessed area in said first component.
Claim 6
Dependent Claim
18 words
An artificial joint of claim 4 wherein a magnet is positioned in either side of said recessed area.
Claim 7
Dependent Claim
15 words
An artificial joint of claim 5 wherein a magnet is positioned in said second component.
Claim 8
Dependent Claim
11 words
An artificial joint of claim 3 which is an elbow joint.
Claim 9
Dependent Claim
11 words
An artificial joint of claim 3 which is a digital joint.
Claim 10
Dependent Claim
50 words
An artificial joint of claims 7 or 8 wherein (A) said first component comprises a stem that is recessed at one end, and (B) said second component comprises a stem with an enlarged area at one end of said stem, for cooperatively engaging said first component in the recessed area.
Claim 11
Dependent Claim
47 words
An artificial joint of claim 9 wherein the stem of said first component is enlarged around either side of the recessed area for retaining the enlarged area of said second component so that the recessed area is slightly larger than the enlarged area of said second component.
Claim 12
Dependent Claim
38 words
An artificial joint of claim 10 wherein said first component is to be affixed to the humeral bone in a living body and said second component is to be affixed to the ulnar bone in a human body.
Claim 13
Dependent Claim
21 words
An artificial joint of claim 11 wherein magnets are positioned in both enlarged areas of the stem of said first component.
Claim 14
Dependent Claim
22 words
An artificial joint of claim 11 wherein a magnet is positioned in the enlarged area of the stem of said second component.
Claim 15
Dependent Claim
24 words
An artificial joint of claim 11 wherein magnets are positioned in all enlarged portions of the stems of both said first and second components.
Claim 16
Dependent Claim
42 words
An artificial joint of claim 11 wherein the enlarged distal area of said first component additionally comprises a protusion for contacting the radius bone of a living body to provide additional stability when the components of the artificial joint are cooperatively engaged.
Claim 17
Dependent Claim
47 words
An artificial joint of claim 11 wherein the enlarged areas of the stems of both said first and second components are substantially cylindrical in shape with the recessed area of said first component substantially curved to receive the enlarged area of the stem of the second component.
Claim 18
Dependent Claim
22 words
An artificial joint of claim 15 wherein the distal protrusion contacts an artificial insert adapted to be inserted into the radius bone.
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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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |