A live display apparatus for setting extension and flexion limits in a continuous passive motion (CPM) system. The CPM system includes a carriage for supporting a patient's limb through a range of reciprocal angular movement, a drive motor for driving the carriage, a carriage state sensor for providing a signal representative of carriage state and a control unit responsive to the carriage state sensor for controlling the drive motor. The live display apparatus includes an operator controlled extension limit select switch which is operatively coupled to the control unit. The select switch causes the carriage to be driven through its range of movement to a desired extension limit when actuated during an extension limit select mode. Data representative of the selected extension limit is stored in extension memory. An extension limit display is responsive to the control unit and provides a visual display indicative of the extension limit selected. An operator controlled flexion limit select switch is operatively coupled to the control unit, and causes the carriage to be driven through its range of movement to a desired flexion limit when actuated during a flexion limit select mode. Data representative of the selected flexion limit is stored in flexion memory. A flexion limit display provides a visual display indicative of the selected flexion limit.
A three axis passive motion exerciser which moves the patient's foot in dorsal/plantar, valgus/varus and abduction/adduction movements. A microprocessor provides signals to control motors which drive cradles and a plate in the desired motions. Potentiometers provide positional feedback information about the actual location of the cradles and the plate, with series resistors providing feedback of the actual motor drive current values. The microprocessor monitors the positions of two motions versus a master motion to keep the movements in synchronization. The movements are synchronized so that the end of the travel limit is reached for each axis simultaneously. The microprocessor further monitors the drive currents to prevent overcurrent conditions and the speeds to limit travel rates. A display and keyboard are provided to allow the operator to monitor and change operating parameters, such as travel limits, force limits and session times.
A universal controller for controlling a plurality of types of continuous passive motion (CPM) devices includes a control panel. Input keys are located within the control panel and provide input parameters which define the limits of operation and modes of operation for a particular CPM device. A microprocessor processes the received input parameters and controls the operation of the particular type of CPM device. Sensors located within the CPM device determine the instantaneous state of the particular CPM device and determine the specific type of CPM device. CPM operating parameters associated with the particular CPM device are stored within a data retention area of the microprocessor. A timer determines time measurements for time dependent calculations.
A muscle stretching machine designed to provide the user with easy system of functional stretching and also provide the user with flexibility feedback information as to the performance of the stretch, such as but not limited to the angles of the stretch, the force of the stretch, the position of the stretch, and the duration of the stretch. A user of the muscle stretching machine can turn on the central processor, adjust the height of the machine to suit their height or to suit the type of stretch to be performed, step onto a round turntable subassembly, place the leg to be stretched on a foam pad designed to raise and lower the leg, pull down on a handle to raise the leg being stretched and read the information displayed on the central processor. When the handles are pulled down the leg is raised. When the handles are allowed to go up the leg is lowered. When the leg is raised and lowered the displays on the control panel change in real time showing the raised or lowered angle of the leg, the, force required to raise or lower the leg, the amount of twist angle on the leg not being stretched, and the height of the pivot point of the stretch.
A bilateral anatomically correct 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 a 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 is pivotally connected to the base such that its virtual pivot axis is spaced from the base to permit bilateral use of the device.
A kinetic rehabilitation device employing controlled passive motion for use in the rehabilitation of the lumbar spine. The device includes a frame, a body support secured to the frame, a control panel, a first and second member secured to the support and pivotally attached to diametrically opposed sides of the frame, and a screw drive assembly for pivoting the first and second members about said frame. A first optical sensor assembly is mounted on one of the pivoting members to zero the body support about its longitudinal axis. A second optical assembly is mounted on the screw drive assembly to feed positional information to the control panel.
