US3899796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metacarpophalangeal joint
Assignee: Sulzer AG
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Filing: 1974-06-27
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Granted: 1975-08-19
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Expires: 1994-06-27
Abstract
Abstract The bifurcated joint part has a slot-like aperture in which a second joint part is pivoted on a pivot pin. The side walls defining the aperture and the sides of the second joint part are shaped to permit sidewise pivoting of the second joint part to one side transverse to the plane of pivoting of the part about the pivot pin. This allows a gripping movement between a thumb and a finger of a hand in which the joint is used.
Inventors
- 👤 Andre Bahler
- 👤 Norbert Gschwend
- 👤 Heinrich Scheier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:41
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/42; A61F2/4241; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30153; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/30369; A61F2002/30405; A61F2002/30433; A61F2002/30621; A61F2002/30624; A61F2002/30632; A61F2/30767; A61F2/30771; A61F2002/30878; A61F2002/4251; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0019; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A hinging metacarpophalangeal joint comprising a first joint part having a pair of opposed side walls defining a slot-like aperture therein and an intramedullary stem extending therefrom; a pivot pin secured in said first joint part across said aperture from one side wall to the other side wall; a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having an intramedullary stem extending therefrom and a pair of opposite sides each facing a respective one of said side walls of said first joint part, said sides and said side walls being shaped to permit pivoting of said second joint part towards only one of said side walls in a first direction transverse to said plane with said stem of said second joint part extended in a direction axial of said stem of said first joint part.
Claim 2
Dependent Claim
155 words
A hinging metacarpophalangeal joint comprising a first joint part having a pair of opposed side walls defining a slot-like aperture therein and an intramedullary stem extending therefrom; a pivot pin secured in said first joint part across said aperture from one side wall to the other side wall; a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having an intramedullary stem extending therefrom and a pair of opposite sides each facing a respective one of said side walls of said first joint part, said sides and said side walls being shaped to permit pivoting of said second joint part towards only one of said side walls in a first direction transverse to said plane with said stem of said second joint part extended in a direction axial of said stem of said first joint part.
Claim 3
Dependent Claim
189 words
A hinging metacarpophalangeal joint comprising a first joint part having a pair of opposed side walls defining a slot-like aperture therein and an intramedullary stem extending therefrom; a pivot pin secured in said first joint part across said aperture from one side wall to the other side wall; a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having an intramedullary stem extending therefrom and a pair of opposite sides each facing a respective one of said side walls of said first joint part, said sides and said side walls being shaped to permit pivoting of said second joint part towards only one of said side walls in a first direction transverse to said plane with said stem of said second joint part extending in a direction axial of said stem of said first joint part; said sides and said side walls being shaped to increasingly limit pivoting of said second joint part transverse to said plane for positions of said second joint part stem displaced from said axial direction.
Claim 4
Dependent Claim
189 words
A hinging metacarpophalangeal joint comprising a first joint part having a pair of opposed side walls defining a slot-like aperture therein and an intramedullary stem extending therefrom; a pivot pin secured in said first joint part across said aperture from one side wall to the other side wall; a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having an intramedullary stem extending therefrom and a pair of opposite sides each facing a respective one of said side walls of said first joint part, said sides and said side walls being shaped to permit pivoting of said second joint part towards only one of said side walls in a first direction transverse to said plane with said stem of said second joint part extending in a direction axial of said stem of said first joint part; said sides and said side walls being shaped to increasingly limit pivoting of said second joint part transverse to said plane for positions of said second joint part stem displaced from said axial direction.
Claim 5
Dependent Claim
186 words
A hinging metacarpophalangeal joint comprising a first joint part having a pair of opposed side walls defining a slot-like aperture therein and an intramedullary stem extending therefrom; a pivot pin secured in said first joint part across said aperture from one side wall to the other side wall; a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having an intramedullary stem extending therefrom and a pair of opposite sides each facing a respective one of said side walls of said first joint part, said sides and said side walls being shaped to permit pivoting of said second joint part towards one of said side walls in a first direction transverse to said plane with said stem of said second joint part extending in a direction axial of said stem of said first joint part; one of said side walls being perpendicular to said pivot pin and the other of said side walls being inclined relative to said pivot pin in a direction outwardly of said aperture.
Claim 6
Dependent Claim
186 words
A hinging metacarpophalangeal joint comprising a first joint part having a pair of opposed side walls defining a slot-like aperture therein and an intramedullary stem extending therefrom; a pivot pin secured in said first joint part across said aperture from one side wall to the other side wall; a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having an intramedullary stem extending therefrom and a pair of opposite sides each facing a respective one of said side walls of said first joint part, said sides and said side walls being shaped to permit pivoting of said second joint part towards one of said side walls in a first direction transverse to said plane with said stem of said second joint part extending in a direction axial of said stem of said first joint part; one of said side walls being perpendicular to said pivot pin and the other of said side walls being inclined relative to said pivot pin in a direction outwardly of said aperture.
Claim 7
Dependent Claim
27 words
A joint as set forth in claim 3 wherein said inclined side wall is a plane surface and forms a wedge-shaped aperture with said one side wall.
Claim 8
Dependent Claim
37 words
A joint as set forth in claim 1 wherein said first joint part has a connecting member extending between said side walls to limit pivoting of said second joint part in one direction of said transverse plane.
Claim 9
Dependent Claim
146 words
A hinging metacarpophalangeal joint comprising a pivot pin; a bifurcated first joint part having a pair of opposed side walls defining a slot-like aperture therein, said pivot pin being secured in said walls and extending across said aperture, one of said walls being disposed in perpendicular relation to said pivot pin and the other of said walls being inclined relative to said pivot pin in a direction outwardly of said aperture, and an intramedullary stem extending therefrom; and a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having a passage surrounding said pin in spaced relation to permit pivoting of said second joint part in a direction transveser to said plane and towards said inclined wall, said second joint part having an intramedullary stem extending therefrom.
Claim 10
Dependent Claim
146 words
A hinging metacarpophalangeal joint comprising a pivot pin; a bifurcated first joint part having a pair of opposed side walls defining a slot-like aperture therein, said pivot pin being secured in said walls and extending across said aperture, one of said walls being disposed in perpendicular relation to said pivot pin and the other of said walls being inclined relative to said pivot pin in a direction outwardly of said aperture, and an intramedullary stem extending therefrom; and a second joint part pivotally mounted on said pivot pin for pivoting in a plane transverse to said pivot pin through an approximately right angle, said second joint part having a passage surrounding said pin in spaced relation to permit pivoting of said second joint part in a direction transveser to said plane and towards said inclined wall, said second joint part having an intramedullary stem extending therefrom.
Claim 11
Dependent Claim
37 words
A joint as set forth in claim 6 wherein said first joint part has a connecting member extending between said side walls to limit pivoting of said second joint part in one direction of said transverse plane.
Claim 12
Dependent Claim
43 words
A joint as set forth in claim 6 wherein said second joint part has a head of circular cross-section about said passage and said first joint part has a socket of circular cross-section in a base of said aperture for receiving said head.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |