The invention relates to prosthetic foot assembly comprising a prosthetic foot and a series elastic pneumatic actuator connected to the prosthetic foot, the series elastic pneumatic actuator being configurable between a first configuration in which the prosthetic foot is displaced to a first, rest position and a second configuration in which the prosthetic foot is displaced to a second position.

A joint for a prosthesis comprises a prosthesis part and a body part. The two parts are connected by a connection part. A first pair of engaging sets of abutments is provided on the connection part and the prosthesis part and a second pair of engaging sets of abutments is provided on the connection art and the body part. By adjusting position of the connection part, the first pair of sets are disengageable and by further adjusting the position, the second pair of sets are also disengageable. This allows for adjustment of the joint at two levels. A prosthesis includes two stripes of resilient material of which at least one has a curved part and a straight part. The joint is provided at a distal end, at the concave part of the strips. At straight parts, the strips cross and one strip extends beyond the other.

The invention relates to a system composed of a prosthetic-foot insert (1), comprising: a proximal attachment device (2) for fixing the prosthetic-foot insert (1) on a stump or a prosthetic component; and at least one sole element (3), which is connected to the attachment device (2); wherein the system comprises a plurality of different force-transmission elements (4, 5), which can be fastened to the at least one sole element (3) at at least one fastening region (34, 35) and comprise various distal sole contours (41, 51) and/or various force-transmission regions (42, 52).

A prosthetic knee for active users has a locking head generally parallel to a vertical axis of the prosthetic knee, a chassis, and a plurality of links connecting the locking head to the chassis. The knee includes a swing control mechanism having a flexion stop connected to the chassis and arranged to control the flexion angle of the knee. The flexion stop extends outwardly from the chassis and obliquely relative to the vertical axis. The knee has an audible feedback mechanism for providing the user with information about the location of the knee. The knee may also have a block lock forming a manually activated mechanism allowing load bearing in a flexed position.

A leg prosthesis wherein the prosthesis shaft and the transtibial part are connected by a prosthesis shaft adapter. The prosthesis shaft adapter is constructed as a compact one-part component with a liner (sleeve as inner prosthesis shaft adapter) of the amputation stump and with a rearward extension for the prosthesis receptacle connection. The prosthesis shaft adapter is designed such that, in addition to the rearward extension of 1 cm to 10 cm, the prosthesis receptacle connection is also angled and laterally offset. Advantageously, the leg prosthesis according to the invention has a relatively low weight due to the prosthesis shaft adapter as a connecting element. The leg prosthesis operates absolutely safely and can be efficiently produced. The fabrication of a leg prosthesis with an individual biomechanical fit to the patient is significantly facilitated, which also results in fewer faulty prostheses.

A prosthetic foot assembly is disclosed. The assembly includes a pivoting ankle joint with a hydraulic system, a prosthetic foot connected to the distal side of the ankle joint, and, at the proximal side, the ankle joint includes a transducer with pyramid adaptor for attaching to a pylon. The ankle joint sensor provides data collection during the stance and optionally, the swing, phases of walking using, for example, strain gages and accelerometers. Also disclosed are methods for real-time feature extraction. Key parameters are captured to which are applied linear, fuzzy logic, neural net, or generic algorithms to determine current state (walking flat, uphill, downhill etc.) in real time and execute changes to the angle between the ankle and foot almost instantaneously based on those parameters.

A control system for control of a prosthetic device having a plurality of actuators receives an orientation signal indicative of a desired movement. The control system evaluates whether the prosthetic device may move as desired with a current angle of rotation and commands at least one actuator to move the prosthetic device as desired by maintaining the current angle of rotation or by adjusting the angle of rotation if the prosthetic device cannot move as desired with the current angle. The control system may alternate between commanding a first subset of actuators and a second subset of actuators each time the orientation signal is indicative of a neutral position. The control system may include a position sensor and a compliance sensor and may command at least one actuator based on a combination of positional control using the position sensor and force control using the compliance sensor.

Systems and methods are disclosed for a powered ankle prosthesis. The prosthesis may comprise a polycentric mechanism having a defined path for an instantaneous center of rotation. The path of the instantaneous center of rotation may be defined by a trajectory substantially equal to an arc positioned over a joint of the polycentric mechanism.

Hybrid terrain-adaptive lower-extremity apparatus and methods that perform in a variety of different situations by detecting the terrain that is being traversed, and adapting to the detected terrain. In some embodiments, the ability to control the apparatus for each of these situations builds upon five basic capabilities: (1) determining the activity being performed; (2) dynamically controlling the characteristics of the apparatus based on the activity that is being performed; (3) dynamically driving the apparatus based on the activity that is being performed; (4) determining terrain texture irregularities (e.g., how sticky is the terrain, how slippery is the terrain, is the terrain coarse or smooth, does the terrain have any obstructions, such as rocks) and (5) a mechanical design of the apparatus that can respond to the dynamic control and dynamic drive.

The present application describes apparatus for supporting a mechanical hand, comprising a support member (200) pivotally coupled at a hinge axis (604) to a mounting member (700); and at least one leaf spring (707) configured to resist movement of the support member about the hinge axis. Apparatus for supporting a mechanical hand, comprising a lock arrangement (750) to lock the support member with respect to the mounting member in a rotational position about the hinge axis is also described.