Prosthetic joint lock and cable mechanism

Details Prosthetic joint lock and cable mechanism Prosthetic joint lock and cable mechanism

1976-11-03

1978-01-10

Frinks, Ronald L.

3 123, A61F 100, A61F 106

Patent

active

040670708

ABSTRACT:
A joint lock and cable arrangement for an externally powered prosthesis, the arrangement allowing shoulder and/or elbow joint movement of a prosthesis through the use of a single driving motor. The joint lock system includes a release solenoid and an electronic circuit which couples the solenoid and the driving motor, the release solenoid being activated to cause locking at a timed period after the motor is energized, so as to permit the desired operation of the associated joint for such timed period. The arrangement enables the use of a single motor to drive the shoulder joint and elbow joint of a prosthesis, and provides operation of a terminal device when both joints are in locked condition.

REFERENCES:
patent: 2535489 (1950-12-01), Edwards
patent: 3735425 (1973-05-01), Hoshall et al.
patent: 3866246 (1975-02-01), Seamone et al.
"Displacement Sensors and their Application to Control of Synthetically Powered Prostheses and Orthoses" by C. H. Hoshall, Bulletin of Prosthetics Research, BPR 10-20, Fall 1973, pp. 4-28.

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