The present disclosure provides a prosthetic thumb. The prosthetic thumb employs a specialized thumb rotating rack for matched mounting of the prosthetic thumb; the thumb rotating rack is connected between the thumb front support and the thumb back support through the coaxially arranged thumb front supporting shaft and thumb back supporting shaft; and the lead connected with the motor in the prosthetic thumb passes through the lead through hole through the thumb rotating rack open slot and no longer passes through a side face as in the prior art, so that when the thumb rotating rack is rotated due to opposite palm and side palm operation of the prosthetic thumb, the lead is not pulled and bent due to the rotation of the thumb rotating rack, and the service life of the lead is prolonged.

The present invention provides a prosthetic finger. The prosthetic finger includes a finger mounting rack, a worm gear, a rotating shaft, a base joint rack, a finger base knuckle, a finger proximal knuckle, a finger distal knuckle, a tension spring, and a transmission rope, a grommet, a motor reducer assembly, a first bevel gear, a worm, a second bevel gear. The prosthetic finger can ensure that the connection of all the parts is reliable, the rotation of the worm gear is smooth, the tension spring is protected, and the transmission rope is not easy to fall off, so that the working reliability of the whole prosthetic finger can be improved and the possibility of failure can be reduced on the whole.

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.

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 prosthetic hand includes a main frame, a hold unit and a drive unit. The hold unit includes a first finger, and a second finger. The first finger has a first proximal end portion, and a first distal end portion opposite to the first proximal end portion. The drive unit includes a drive mechanism and a first transmission mechanism. The first transmission mechanism is coupled to the drive mechanism and the first finger. The drive mechanism drives the first transmission mechanism to rotate the first finger about a first axis between a first closed position and a first open position, and to rotate the first finger about a second axis transverse to the first axis between the first open position and an eversion position.

Described herein are systems and methods for a powered ankle/foot prosthesis and controller that utilizes piecewise emulated passive impedances to provide for walking at various cadences and on various slopes and for ground slope adaptive standing. A powered prosthesis using these systems and methods is capable of emulating any physical behavior provided by the healthy joint, and additionally describes a control system that utilizes the sensing and actuation system on the prosthesis to provide appropriate ankle joint impedances. Further, the control system incorporates a finite-state-based structure, and within each state, emulates the behavior of the healthy joint with strictly passive impedance functions.

A powered prosthetic thigh can have a proximal portion configured to couple to a prosthetic hip socket and can have a distal portion attached to the proximal portion. The distal portion can have a distal connector configured to couple to a prosthetic knee. The powered prosthetic thigh can also have a computer controlled actuator configured to rotate the prosthetic thigh relative to the prosthetic hip socket.

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.