Abstract: A continuous passive motion device for the hand and its method of use is disclosed. The continuous passive motion hand device includes a base member which is mounted on the hand. The device also includes a rotatable arm mounted on the base member and a rotatable lever mounted on the rotatable arm. A drive bar is fixedly mounted on the rotatable lever and a plurality of linkages connect the drive bar to a respective finger tip. During a cycle of the device, between a full extension and a full flexion of the hand, the drive bar is moved through two hundred and seventy degrees or more by the concerted rotations of the rotatable arm and rotatable lever. Also, during a cycle, each linkage controls and urges the movement of a respective finger tip. Specifically, the end of each linkage that is attached to the drive bar is prevented from rotating about the axis of the guide bar. Additionally, the linkage establishes a second axis for that end of the linkage which is attached to the finger tip.

Abstract: A patella exercise device for continuously exercising the patella during continuous passive movement of the knee includes a patella contact pad mounted to a (CPM) device for contacting the patella while the knee is moved in flexion and extension by the (CPM) device. The patella contact pad is adapted to contact and push the patella from a neutral anatomical position during operation of the (CPM) device. Depending on the positioning of the patella contact pad with respect to the patella, the patella is either pushed superiorly or inferiorly during flexion and extension of the knee. The patella is then compressed and tightened during the opposite movement. The patella contact pad may be driven by a spring like cam member to exert a predetermined force against the patella. The patella exercise device is useful for therapy of a knee following injury or surgery and helps prevent patella baja.

Abstract: A continuous passive motion device for achieving full extension of the leg of a patient includes a base and a four-bar articulated limb support member which is mounted for movement on the base. For the articulated limb support member one bar is a femoral support member which is pivotally mounted on the base. Another one of the bars is a tibial support member which is pivotally joined to the femoral support member. Also included in the device is a drive bar which has a first end reciprocally mounted on the base of the device and a second end which is pivotally attached to the femoral support member. A cross bar having a first end pivotally attached to the tibial support member and having a second end pivotally attached to the drive bar interconnects the tibial support member and the drive bar. The device further includes a motor which is connected to the device for reciprocating the first end of the drive bar to alter the configuration of the device for exercising the leg.

Abstract: A continuous motion passive anatomic ankle-foot exerciser for rehabilitating ankle and foot injuries is provided. The ankle-foot exerciser is constructed to move a patient's foot through a range of motion which may include pure ankle joint motion, pure subtalar joint motion, or a combination of both. The ankle-foot exerciser includes a base, a foot holder, a drive motor for moving the foot holder in an up/down in/out motion, and a foot tilting device for continuously tilting the foot in an inversion/eversion motion. Movement of the foot holder is controlled by an initial positioning of the drive motor and by a control circuit that coordinates the up/down in/out and tilting motions of the foot holder.

Abstract: A passive shoulder exerciser constructed to reciprocably move a patient's arm back and forth through an arc of up to 180.degree. for providing flexion and abduction of the shoulder. The shoulder exerciser includes a base, an electric drive motor, and an arm holder for the patient's arm, mounted to the drive motor for reciprocal movement by the drive motor through an arc of up to 180.degree.. The arm holder is slidably and pivotably mounted such that during use of the exerciser, a patient's arm may slide towards and away from the body and pivot along two pivot points to allow the shoulder joint to follow a natural anatomical range of motion. The shoulder exerciser is adjustable for use with either shoulder. Additionally, the shoulder exerciser is adjustable for a patient's height, arm length, and is adjustable with respect to speed and range of motion.

Abstract: Patient support and positioning system for continuous passive motion (CPM) machines comprising a fully adjustable chair to which is attached a horizontal telescoping arm having a coupling member for fastening the vertical stand of a CPM machine thereto. The chair has full adjustment in all axes; rotation around a vertical center axis; vertical height adjustment; fully adjustable seat back, both fore-and-aft and vertically for proper lumbar support; and tilt of the seat. The telescoping arm is lockably adjustable in length to provide proper center-to-center distance between the center post of the chair and the CPM machine support. The arm further includes a downward vertical step member at its outboard CPM machine connecting end to permit proper vertical alignment of the CPM machine for users having a short torso. The arm also provides a support for a CPM power supply/control unit, and has means for securing the power cord out of the way off the floor.

Abstract: Patient support and positioning system for continuous passive motion (CPM) machines comprising a fully adjustable chair to which is attached a horizontal telescoping arm having a coupling member for fastening the vertical stand of a CPM machine thereto. The chair has full adjustment in all axes: rotation around a vertical center axis; vertical height adjustment; fully adjustable seat back, both fore-and-aft and vertically for proper lumbar support; and tilt of the seat. The telescoping arm is lockably adjustable in length to provide proper center-to-center distance between the center post of the chair and the CPM machine support. The arm further includes a downward vertical step member at its outboard CPM machine connecting end to permit proper vertical alignment of the CPM machine for users having a short torso. The arm also provides a support for a CPM power supply/control unit, and has means for securing the power cord out of the way off the floor.

Abstract: A CPM device is disclosed having a single drive tube supporting the calf and thigh support members. Arms extend upwardly from the calf and thigh support members, each supporting an adjustable cradle in which the calf or thigh rests. The support arms are rotatable 180 degrees so that either leg may be supported over the single drive tube. A foot support is also cantilevered from the end of the calf support drive bar. The drive tube which supports the calf and thigh drive support bars is cantilevered from a unique support mechanism which attaches an end of the drive tube to the horizontal bed frame at the end of the hospital bed. A rack and pinion mechanism is combined with a unique gas spring in order to allow the drive tube to be easily rotated up above the hospital bed with the gas spring providing a power assist to the person lifting the drive tube off the bed in order that the drive tube may be easily rotated up off the bed without undue physical exertion.