Abstract: The present invention relates in the field of orthopedics to an artificial ankle which imitates the natural human gait in a proper way, thereby enabling its user to walk not only in a plane environment but also uphill and downhill without any unpleasant effects. The present invention further relates to an artificial foot and an artificial leg containing said artificial ankle.

Abstract: A bi-modal ankle-foot device that provides a curved effective shape appropriate for walking and a flattened effective shape for standing. The bi-modal ankle-foot device includes a foot piece and a lockable ankle joint connected to the flat foot piece, the ankle joint and foot piece cooperating to provide a curved shape for walking when the ankle joint is unlocked and to provide a flattened shape for standing when the ankle joint is locked.

Abstract: The present invention relates in the field of orthopedics to an artificial ankle which imitates the natural human gait in a proper way, thereby enabling its user to walk not only in a plane environment but also uphill and downhill without any unpleasant effects. The present invention further relates to an artificial foot and an artificial leg containing said artificial ankle.

Abstract: The present invention relates to a system for use in rehabilitation and/or physical therapy for the treatment of injury or disease. The system can enable an amputee to proceed over any surface without overbalancing. In particular the system is self-adapting to adjust the torque moment depending upon the motion, the extent of inclination, and the surface topography.

Abstract: The present invention relates to a system for use in rehabilitation and/or physical therapy for the treatment of injury or disease. The system can enable an amputee to proceed over any surface without overbalancing. In particular the system is self-adapting to adjust the torque moment depending upon the motion, the extent of inclination, and the surface topography.

Abstract: A bi-modal ankle-foot device that provides a curved effective shape appropriate for walking and a flattened effective shape for standing. The bi-modal ankle-foot device includes a foot piece and a lockable ankle joint connected to the flat foot piece, the ankle joint and foot piece cooperating to provide a curved shape for walking when the ankle joint is unlocked and to provide a flattened shape for standing when the ankle joint is locked.

Abstract: A prosthetic foot device has a foot piece having a forefoot region wherein the forefoot region has one or more adjusting elements for adjusting the length of a flat region of the foot piece for stability in standing.

Abstract: Prosthetic foot is provided having at least one flexible sole element that is deflected under load during a gait cycle of a user of the foot and a plurality of constraining elements that constrain deflection of the at least one flexible sole element such that it assumes an appropriate roll-over shape during a gait cycle of the user. The constraining elements dictate the roll-over shape assumed by the flexible sole element, while the at least one flexible sole element stores and returns energy during the gait cycle of the user to promote a natural “feel” to the foot.

Abstract: A portable ranging system for analyzing gait is disclosed comprising a transponder having an infrared receiver and an ultrasound emitter, a base unit having an infrared emitter and an ultrasound receiver, and a computer terminal. During gait analysis, the transponder is worn by a subject at approximately the level of the body center of mass. As the subject walks away from the base unit, the base unit continuously causes, at a constant sampling rate, the ultrasound emitter to emit ultrasound pulses. These ultrasound pulses are received by the ultrasound receiver of the base unit. The computer terminal, by counting during the flight of each ultrasound pulse, is able to calculate the time of flight of each ultrasound pulse, and thus calculate and display in real time the forward progression of the subject. At the end of the walking trial, the computer terminal displays the instantaneous velocity profile, or gait velocigram (GVG), for that trial.