Biodex

Other

Daniel Y Gezari

Richard Krukowski

Robert L Boyd

Walter Gezari

A muscle exercise and/or rehabilitation apparatus includes a fixture against which a force can be applied; a sensor which senses the force applied to the fixture and produces a load signal corresponding thereto; a speed detector which produces a velocity signal corresponding to the speed of the fixture; a servo motor which produces a rotational output of an output shaft thereof; a closed loop servo circuit which controls the motor in response to the load signal and the velocity signal to control rotation of the output shaft of the servo motor; and a conversion device connected between the fixture and the output shaft of the servo motor for translating the rotational output of the output shaft to linear motion of the fixture, the conversion device including a frame formed by a base, two spaced vertical support bars extending upwardly from the base, and an upper cap securing upper ends of the vertical support bars together, two vertical guide rods supported by the frame, a slide movable along the guide rods in such linear motion, an operational pulley rotatably connected with the output shaft of the servo motor, and a rope secured to the slide and wrapped about the pulley for controlling movement of the slide in the linear motion in response to the output shaft of the servo motor.

Muscle exercise and/or rehabilitation apparatus using linear motion

A muscle exercise and rahabilitation apparatus includes a movable fixture against which a force can be applied; a servo motor having an output shaft coupled to the fixture; a strain gauge effectively coupled between the output shaft and the fixture for producing a load signal corresponding to the force applied to the fixture; a speed detector for producing a velocity signal corresponding to the speed of the fixture; a closed loop servo circuit for controlling the motor in response to the load and velocity signals to regulate the velocity of the fixture; a limit circuit for preventing movement of the fixture past opposite limits; a storage circuit for storing limit signals corresponding to each limit; a limit setting circuit for enabling the storage circuit to store each limit upon movement of the fixture thereto; a position sensing circuit for producing a position signal corresponding to the position of the fixture; a deceleration circuit for slowing down movement of the fixture as the fixture approaches each limit, in response to the velocity, position and limit signals; detecting circuits for detecting a plurality of predetermined operational faults of the apparatus; an emergency stop circuit for terminating operation of the apparatus upon detection of some of the operation faults; a dynamic brake for braking the servo motor to stop movement of the fixture in response to the emergency stop circuit; and a stop circuit for controlling the motor to stop movement of the fixture upon detection of other operation faults.

Muscle exercise and rehabilitation apparatus

A cardiac stress table employing a cycle type ergometer upon which a patient can be supported during exercise for scintillation camera scanning. The table includes means for adjusting the pedals of the ergometer both longitudinally of the table and vertically with respect to a seat for the patient. A back-supporting member is pivotally adjustable relative to the seat. Counterbalancing means is provided to facilitate lifting of the ergometer during vertical adjustment.

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Chevy Chase, MD, United States of America

Daniel Y Gezari