Continuous passive motion orthosis device for a limb

摘要

A continuous passive motion orthosis device for a limb having pivotally connected first and second body portions. The device includes a base having a proximal end and a distal end. A first carriage member receives the first body portion and is pivotally connected to a second carriage member which receives the second body portion. The second carriage member is also pivotably connected to the base. A drive mechanism moves the first carriage member between the distal and proximal ends of the base. A speed control device controls the velocity of the first carriage member between the distal and proximal ends of the base such that the first carriage member pivots about the first support pivot axis with respect to the second carriage member at a predetermined angular velocity. A biasing mechanism is provided to assist the drive mechanism in lifting the limb. The second carriage member includes a plate for receiving the second body portion of the limb and is mounted such that the plate moves with respect to the second carriage member thereby compensating for different sizes and shapes of various patients, for any misalignment due to the limb shifting during therapy, or possible misalignment at initial setup by the therapist.