US4466800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finger model
Assignee: Individual
•
Filing: 1981-10-30
•
Granted: 1984-08-21
•
Expires: 2001-10-30
Abstract
Abstract A finger model with joints, being connected to each other and corresponding to a respective finger, having tendon-like cords for their movements is so designed that natural finger movements are possible, whereby the model is of particularly simple and clear design. The finger model can be used as finger endoprosthesis or as a demonstration object for the explanation of finger movements and of injuries of the finger movement mechanism.
Inventors
- 👤 Karl Breiden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:39
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/28; G09B23/30; G09B23/32
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
An artificial finger having central and proximal phalanges and a metacarpale arranged with opposing articular facets therebetween defining corresponding joints, the finger further comprising: a plurality of tendon-like cords connected to the phalanges and the metacarpale in the vicinity of the joints for achieving movement thereat; a plurality of cord receiving channel-like guides provided at the underside of the phalanges and metacarpale and arranged proximate the rims of the articular facets; and a further cord attached to the upper surface of the proximal phalange and partially wrapped around the finger for allowing free lateral and volar movement thereof.
Claim 2
Dependent Claim
98 words
An artificial finger having central and proximal phalanges and a metacarpale arranged with opposing articular facets therebetween defining corresponding joints, the finger further comprising: a plurality of tendon-like cords connected to the phalanges and the metacarpale in the vicinity of the joints for achieving movement thereat; a plurality of cord receiving channel-like guides provided at the underside of the phalanges and metacarpale and arranged proximate the rims of the articular facets; and a further cord attached to the upper surface of the proximal phalange and partially wrapped around the finger for allowing free lateral and volar movement thereof.
Claim 3
Dependent Claim
45 words
Finger model as claimed in claim 1, characterized by the distance of the guides from the rims of the articular facets being chosen so that each of two inter-connected joints are able to perform a relative movement of at least 90° about the articular axis.
Claim 4
Dependent Claim
25 words
Finger model as claimed in claims 1 or 2, characterized by a channel-like guide to accept cords being provided at each side of the metacarpale.
Claim 5
Dependent Claim
23 words
Finger model as claimed in one of the claims 1 or 2, characterized by a retinacular ligament being fastened to the proximate phalange.
Claim 6
Dependent Claim
52 words
Finger model as claimed in one of the claims 1 or 2, characterized by the connection of two adjoining joints being effected by means of two elements, passing through an articulate socket along its rotational axis and affecting the articulate socket at two points, the articulation being rotatable about the rotational axis.
Claim 7
Dependent Claim
15 words
Finger model as claimed in claim 5, characterized by the elements being annular in design.
Claim 8
Dependent Claim
30 words
Finger model as claimed in one of the claims 1, 2 or 6 characterized by at least one of the cords having a severing point with a mechanism for re-connection.
Claim 9
Dependent Claim
23 words
Finger model as claimed in claim 7, characterized by the cords in each VERDAN-zone having a severing point with a mechanism for re-connection.
Claim 10
Dependent Claim
26 words
Finger model as claimed in one of the claims 1, 2, 6 or 8, characterized by the metacarpale having elements for attachment to a holding arrangement.
Claim 11
Dependent Claim
18 words
Finger model as claimed in claim 9, characterized by the elements being designed as holes to accept pins.
References Cited (Backward Citations)
US1501308A
Cited
DE841190C
Cited
US2641769A
Cited
US2859450A
Cited
US3188753A
Cited
FR2236478A1
Cited
DE2639143A1
Cited
US4332570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |