An assistive device is disclosed that includes a plurality of control systems for controlling active and passive tasks. The assistive device accommodates active power generation when needed, but is otherwise configured to switch to passive control for other tasks. The assistive device further includes a continuously variable transmission to optimize movement of the assistive device for a variety of tasks. The assistive device includes a lower limb embodiment defining an artificial knee joint controlled by the plurality of control systems.

A time-dependent decay behavior is incorporated into one or more joint actuator control parameters during operation of a lower-extremity, prosthetic, orthotic or exoskeleton device. These parameters may include joint equilibrium, joint impedance (e.g., stiffness, damping) and/or joint torque components (e.g., gain, exponent). The decay behavior may be exponential, linear, piecewise, or may conform to any other suitable function. Embodiments presented herein are used in a control system that emulates biological muscle-tendon reflex response providing for Reflex Parameter Modulation a natural walking experience. Further, joint impedance may depend on an angular rate of the joint. Such a relationship between angular rate and joint impedance may assist a wearer in carrying out certain activities, such as standing up and ascending a ladder.

A unibody transtibial prosthetic device includes a socket personalized for a specific patient’s residual limb. A pylon extends from the socket, the pylon being a unitary polymer structure of interconnected elongated supports having open spaces therebetween. The device also includes a foot-ankle complex, the foot-ankle complex being a unitary polymer extending from the pylon, the foot and ankle unitary structure being shaped to provide multi-axial dynamic flex to enable dorsiflexion, plantar flexion, inversion and eversion motion for smooth symmetric gait performance and energy capture and return. The socket, pylon and foot-ankle complex are portions of a unibody.

Disclosed herein are embodiments of a powered prosthesis. In one embodiment, the powered prosthesis may include a first joint actuator; a second joint actuator; a connector to connect the first joint actuator with the second joint actuator; and a power source connected with both the first and second joint actuator; wherein the first joint actuator and the second joint actuator are both at least backdrivable and configured such that when one of the first or second joint actuator is drawing power from the power source, the other of the first or second joint actuator may be generating power for the power source. In some embodiments, the first motor is at least a high output torque motor. In other embodiments, the second motor is at least a high output torque motor.

A prosthesis or orthosis device includes a knee joint connectable with the user's leg; a swing storage spring-gear mechanism comprising a balancing spring inserted in an ankle member housing located in an ankle member, a drive gear, a driven gear, an intermediate gear and a gear rod, and a foot part comprising a dorsiflexion spring; a lower leg connecting a knee joint and a foot part to each other, in which a weight-receiving member is located; and a swing storage mechanism connected to the foot part by a second housing of the connection tube and a gear rod pin, and to the knee joint by a first housing of the connection tube and a first housing of the knee joint; and a weight-receiving mechanism comprising a weight-receiving member and a compression arm and a lock fork for activating and deactivating the weight-receiving member.

A prosthesis socket having an open proximal end for accommodating an amputation stump, an inner wall and an outer wall, at least one hollow space being located between the inner wall and the outer wall and at least one internal element extending through said hollow space, the at least one internal element being integrally formed with the inner wall and/or the outer wall.

A prosthetic ankle-foot device, in particular of the biomimetic type, includes: a tibia element; a talus element movably connected to the tibia element through a first talocrural joint having a first hinge joint; a calcaneus element movably connected to the talus element through a second subtalar joint having a second hinge joint; a medial metatarsal element movably connected to the calcaneus element through a third medial midtarsal joint, the third joint having a third hinge joint; a lateral metatarsal element movably connected to the calcaneus element through a fourth lateral midtarsal joint, the fourth joint having a fourth hinge joint; a medial phalanx element movably connected to the medial metatarsal element through a fifth medial metatarsophalangeal joint, the fifth joint having a fifth hinge joint; a lateral phalanx element movably connected to the lateral metatarsal element through a sixth lateral metatarsophalangeal joint, the sixth joint having a sixth hinge joint; an elastic actuation element having an upper part movably connected to the tibia element and a lower part movably connected to the calcaneus element.

A lower limb prosthesis comprises a knee chassis (10), a shin carrier (20) pivotally connected to the knee chassis (10) and a piston and cylinder assembly (30, 40) pivotally connected to the knee chassis (10) and the shin carrier (20). The piston and cylinder assembly (30, 40) comprises a piston assembly (40) comprising a piston (40) mounted on a piston rod (42), a cylinder body (32B) having a cavity (46) defining a cylinder within which the piston (44) is arranged to reciprocate along the piston and cylinder assembly axis, and a foot component attachment means (36) for attaching a foot component to the piston and cylinder assembly (30, 40).

A stimulator substrate device for stimulating nerve cells, and apparatus including same, in particular nerve cells in an extremity, includes a substrate support, in which a plurality of stimulators for emitting stimulation signals to the nerve cells are provided. The plurality of stimulators is provided in a line on the substrate support and the substrate support is tubular.

An orthopedic joint device is provided, the device having an upper part, a lower part pivotably mounted thereon and an actuator fastened to the upper part and the lower part and having a drive shaft coupled to an output element via a force transmission device, the force transmission device having a load transmission element that can by adjusted depending on the load.