The current document is directed to a two-way, by-passable, overrunning clutch incorporated within a mechanical prosthetic knee that provides functionality similar to a biological knee or incorporated in another articulated device, such as a robotic or orthotic articulated device or member. The currently disclosed two-way, by-passable, overrunning clutch allows for two-way free rotation when disabled, but, when enabled, prevents rotation in one direction while allowing free rotation in the other direction. In the mechanical prosthetic knee, the two-way, by-passable, overrunning clutch is enabled by application of a mechanical force and disabled by removal of the mechanical force.

The invention relates to an orthopedic joint device having an upper part (10), a lower part (20) mounted thereon so as to be pivotable about a pivot axis (15), and a blocking device (30) which blocks a pivoting movement of the upper part relative to the lower part, wherein the blocking device never blocks in one direction of pivoting and, in the opposite direction of pivoting, can be switched from a release position to a blocking position, wherein the blocking device is assigned an actuation element (40) that holds the blocking device in the release position or moves it to the release position.

A prosthetic ankle includes a pair of prosthetic members movably coupled together to allow movement of the pair of prosthetic members with respect to one another. A hydraulic actuator or damper including hydraulic fluid in a hydraulic chamber is coupled to one of the pair of prosthetic members. A hydraulic piston is movably disposed in the hydraulic chamber and coupled to another of the pair of prosthetic members. A hydraulic flow channel is fluidly coupled between opposite sides of the chamber to allow hydraulic fluid to move between the opposite sides of the chamber as the hydraulic piston moves therein. A voice coil valve is coupled to the hydraulic flow channel to vary resistance to flow of hydraulic fluid through the flow channel, and thus movement of the piston in the chamber, and thus influencing a rate of movement of the pair of prosthetic members with respect to one another.

The present disclosure provides a mounting structure for a general prosthetic finger of a prosthetic hand. The mounting structure comprises a prosthetic hand base plate, a finger base plate connecting screw, a finger connector, a tension nut, a finger connecting screw and a finger mounting rack of the general prosthetic finger; and an axis of the finger connecting screw is perpendicular to a pointing direction of the general prosthetic finger when the general prosthetic finger is in an unbent state. The finger connector, the step-shaped tension nut, the finger connecting screw and a finger base plate connecting screw are adopted by the mounting structure to connect the general prosthetic finger with the prosthetic hand base plate, and the axis of the finger connecting screw is perpendicular to the pointing direction of the general prosthetic finger, so that the connection is reliable and the mounting structure is not easy to loosen.

An adaptive robotic finger prosthesis according to the inventive concepts includes a proximal phalanx body configured to be worn on a proximal phalanx portion of a cut finger, a middle phalanx body connected to the proximal phalanx body and configured to function as a middle phalanx portion of the cut finger, a distal phalanx body connected to the middle phalanx body and configured to function as a distal phalanx portion of the cut finger, a first proximal phalanx link disposed under the proximal phalanx body, a second proximal phalanx link disposed on the proximal phalanx body and joint-connected to the first proximal phalanx link, and a proximal phalanx elastic member provided at a joint between the first proximal phalanx link and the second proximal phalanx link to provide elastic force.

Prosthetic devices and, more particularly, modular myoelectric prosthesis components and related methods, are described. In one embodiment, a hand for a prosthetic limb may comprise a rotor-motor; a transmission, comprising a differential roller screw; a linkage coupled to the transmission; and at least one finger coupled to the linkage. In one embodiment, a component part of a wrist of a prosthetic limb may comprise an exterior-rotor motor, a planetary gear transmission, a clutch, and a cycloid transmission. In one embodiment, an elbow for a prosthetic limb may comprise an exterior-rotor motor, and a transmission comprising a planetary gear transmission, a non-backdrivable clutch, and a screw.

In one embodiment, an adjustable prosthetic ankle separate from a prosthetic foot includes an upper coupling member, a lower coupling member that couples with the upper coupling member, and a flexion angle adjustment mechanism associated with the coupling members that enables a user to change a relative angle between the coupling members, and therefore a flexion angle of the prosthetic ankle, without using any tools.

A device is provided to allow adaptation of a prosthetic or robotic foot in the medial-lateral direction, including pronation and supination of the foot using a series of articulations. Articulations are permitted in the disclosed device due to linkage systems positioned at various locations of the prosthetic foot. In particular, the device includes multiple connected linkage systems each including upper and lower portions with an articulating contact surface designed for load carriage and stability. The point of contact between the contact surfaces of each linkage system comprises the position-dependent instantaneous center of rotation of the upper portion with respect to the lower portion. The device also includes a platform coupled between the linkage systems and a base.

A prosthetic hand system may include a plurality of prosthetic fingers and a prosthetic thumb. The prosthetic hand system may include a thumb drive mechanism that may be used to actuate the prosthetic thumb. In some examples, the thumb drive mechanism may be configured to enable the prosthetic thumb to perform a pinching or grasping motion and a release motion. The prosthetic hand system may also include a backlock that enables the prosthetic thumb to maintain pinching or gripping pressure after a motor has been disengaged. The prosthetic hand system may also include a gear lock that may be configured to lock a finger joint. The prosthetic hand system may also include an adaptive gripping joint that may be located on each prosthetic finger. In some examples, the adaptive gripping joint may be configured to passively adapt the plurality of prosthetic fingers to one or more differently shaped objects.

A prosthetic hand system may include a plurality of prosthetic fingers and a prosthetic thumb. The prosthetic hand system may include a thumb drive mechanism that may be used to actuate the prosthetic thumb. In some examples, the thumb drive mechanism may be configured to enable the prosthetic thumb to perform a pinching or grasping motion and a release motion. The prosthetic hand system may also include a backlock that enables the prosthetic thumb to maintain pinching or gripping pressure after a motor has been disengaged. The prosthetic hand system may also include a gear lock that may be configured to lock a finger joint. The prosthetic hand system may also include an adaptive gripping joint that may be located on each prosthetic finger. In some examples, the adaptive gripping joint may be configured to passively adapt the plurality of prosthetic fingers to one or more differently shaped objects.