Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Having electrical actuator – Bioelectrical
Patent
1985-05-21
1986-11-18
Picard, Leo P.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Having electrical actuator
Bioelectrical
A61F 106
Patent
active
046233547
ABSTRACT:
A myoelectrically controlled artificial hand is provided having a pair of fingers extending distally from a pivot and mounted thereon for selective separation and conversions by means of a pair of electrical motors. The first electric motor has high speed and low torque with a drive train connected to one of the fingers so as to affect rapid separation and conversion of the fingers. The second motor has low speed and high torque, and has a drive train connected to the second finger to effect pinch force between the fingers. A field effect transistor driver actuates the electric motor to operate the artificial hand. The control mechanism for the motors is actuated by myoelectric signals from the user, so as to supply myoelectric pulses to the field effect transistor driver. As a result, the user can selectively separate or converge the fingers based on his own muscular movement. The combination of the field effect transistor driver and the pair of electric motors results in a highly efficient system which utilizes a minimal quantity of electric current, so that a single nine volt disposable battery may be used to power the system.
REFERENCES:
patent: 3735425 (1973-05-01), Hoshall et al.
patent: 4149278 (1979-04-01), Wiker et al.
patent: 4246661 (1981-01-01), Pinson
patent: 4314379 (1982-02-01), Tanie et al.
Childress Dudley
Strysik John
Northwestern University
Picard Leo P.
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