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Pneumatically-Powered Orthosis and Electronic Control System for Stroke PatientRehabilitation

机译：用于中风患者康复的气动矫形器和电子控制系统

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This thesis presents the development of a system designed to manipulate the upperextremity of stroke patients suffering from hemiplegia. The orthosis, an aluminum structure built to be strapped on to a patient's paretic arm, is jointed at the elbow to allow rotational motion of the arm. Compressed air provides the force necessary to move the orthosis/arm combination through a selected motion profile via a power cylinder activated by a pneumatic servovalve. Sensors located on the orthosis and throughout the system provide feedback to circuitry which precisely controls arm position. A digital computer with data acquisition capability provides software control over several system parameters and generates a user-friendly interface to the therapist performing the rehabilitation exercise. Measurements such as velocity, acceleration, and differential pressure taken during various operating modes can be used to calculate power, strength, range of motion, and degree of muscle spasticity so that a time history of improvement for the patient may be developed and used to study the effects of such therapy on stroke rehabilitation.

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