Ball hand prosthesis

Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arm or component and actuator or connector therefor

Reexamination Certificate

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Details

C623S065000

Reexamination Certificate

active

07438726

ABSTRACT:
A realistic looking hand prosthesis made preferably of an elastomeric material is formed to hold a substantially spherical ball. The ball is held in the hand securely by friction between a ball and a hand made of a rubber like material wherein the ball is slightly larger in diameter than the conformed hand. The ball may be selectively rotationally oriented in three orthogonal directions of angular freedom. The ball is provided with various attachment means for attaching implements, which attachment means may include holes of various shapes and sizes, holes with projections, magnetic attaching means and threaded or other fastening means. Providing of angular adjustment in three orthogonal directions enables the ball to be able to attach a large number of useable implements to be positioned so as to aim the axis of each implement as needed and to rotate about its axis. The ball may be utilized in connection with a natural or prosthetic hand.

REFERENCES:
patent: 1438114 (1922-12-01), Hume
patent: 2657394 (1953-11-01), Milton, Jr. et al.
patent: 4386448 (1983-06-01), Kohn
patent: 4735754 (1988-04-01), Buckner
patent: 4944766 (1990-07-01), Williams
patent: 5080681 (1992-01-01), Erb
patent: 6238358 (2001-05-01), Philot et al.
Dechev et al, Multiple finger, passive adaptive grasp prosthetic hand, Oct. 2001, Mechanism and Machine Theory, vol. 36, issue 10, pp. 1157-1173.
Dechev et al, Multi-finger, passive adaptive grasp prosthetic hand: Better function and Cosmesis, date unknown, pp. 1-2.

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