Control System for Prosthetic Devices (MSC-21941)
Although many prosthetic devices have been developed, including computer controlled "bionic" or hydraulically actuated devices, these devices do not provide user feedback.
Additionally, below-the-elbow amputees favor some derivation of the traditional hook-and-cable harness system developed in the last century because of the low cost, ease of repair, reliability and simple hook prehension (derived from the shoulder and back muscles through a harness and cable assembly). The Myoelectric Prosthesis Control System employs the favored harness and shoulder "shrug" control, but also includes a circuit for the dexterous control of an electromechanical prosthetic hand. The device can scale shoulder physical movement so persons of varying sizes and physical abilities can use it. In addition to providing user feedback, the system can provide wrist rotation and control of each finger digit. With no shrug, the prosthetic thumb and all of the prosthetic fingers are extended. As the shrug increases, the thumb and fingers move sequentially to the closed position. Although designed for use with a harness system, the device may be adapted to other types of prosthetic devices.
Attached files:617_Control Systems for Prosthetci Devices.pdfPatents:
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