Accession Number : ADD001852

Title :   Shoulder Disarticulation Prosthetic System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Seamone,Woodrow ; Schmeisser,Gerhard

Report Date : 18 Feb 1975

Pagination or Media Count : 10

Abstract : The invention is an externally powered prosthesis for shoulder disarticulation amputees. Proportional control of the prosthesis is provided by a displacement sensor preferably comprised of a movable magnet and a stationary semiconductor element which responds to changes in magnetic field strength. The movable magnet is displaced by the transverse motion of the amputee's skin (caused by controlled flexure of a suitably located muscle), thereby producing a signal in the semiconductor element which is proportional to the skin motion. Control of the prosthesis is then accomplished by amplification and utilization of the signal to drive an electric motor powered by an external battery.

Descriptors :   *Patents, *Prosthetic devices, *Medical equipment, Amputees, Control systems, Electric motors

Subject Categories : Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE