Features for a powered prosthetic thumb are described. The thumb provides for rotation of a digit that mimics the natural movement possible with a sound thumb. The thumb may attach to a full or partial prosthetic hand or socket on a residual limb. The thumb may include an upper assembly, including a prosthetic thumb digit, rotatably attached to a mount about a pinch axis and a lateral axis. The digit may rotate about only the pinch axis, only the lateral axis, or both the pinch and lateral axes simultaneously. A first actuator may actuate to cause rotation of the digit about the pinch axis. A second actuator may actuate to cause rotation of the digit about the lateral axis. The first and second actuators may be actuated together at appropriate speeds to cause rotation about both the pinch and lateral axes simultaneously. A swaying chassis may be rotatably connected with the upper assembly and a lower assembly about various offset axes to provide for rotation about the lateral axis.

An input device, in particular joystick, with an operating device and a magnetorheological brake device and a controller for activating the brake device. The operating device includes a supporting structure and an operating lever, which is accommodated on the supporting structure for pivoting around at least one pivot axis. The brake device is coupled with the pivot axis for controlled damping of a pivoting motion of the operating lever by way of the controller.

A prosthetic arm apparatus including a plurality of segments that provide a user of the prosthetic arm apparatus with substantially the same movement capability and function as a human arm. The segments are connectable to one another and connectable to a prosthetic support apparatus that may be adorned by the user. A prosthetic limb segment includes a housing having an input interface and an output interface, the output interface and the input interface being moveable with respect to one another, a motorized drive disposed within the housing, the motorized drive effecting movement of at least one of the output interface or the input interface, and a controller disposed within the housing for controlling actuation of the motorized drive. The controller may be configured to communicate with at least a second motorized drive of at least a second prosthetic limb segment to control actuation thereof.

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.

Powered limb prostheses with multi-stage transmissions are provided.

A driving assembly for moving a first body part relative to a second body part comprising at least one manipulator unit for body part including a housing for accommodating at least partly of an actuator, a torque/force transmission gear, a partial gear wheel operatively connected with each other and a first connector arranged at a first/tail end of the manipulator unit for coupling with the first body part and a second connector movably arranged at a second/head end of the manipulator unit for coupling with the second body part and driven by the partial gear wheel actuated by the actuator via the torque transmission gear for coupling and moving with the second body part, and preferably an arc channel or rail for guiding back and forth movement of the partial gear wheel.

A method for adjusting a flexion angle of a prosthetic ankle includes a user adjusting a relative angle between first and second coupling members of the prosthetic ankle using a flexion angle adjustment mechanism of the prosthetic ankle that requires no tools to adjust.

Various aspects of upper arm prosthetic system for a human subject having a body and a partial arm are described. According to one aspect, the system may comprise any one or more of a force amplification apparatus, a terminal unit apparatus, and/or an adjustable elbow apparatus. Each apparatus may be body-powered and/or comprise 3D printable structures. Related upper arm prosthetic apparatus, kits, methods, and systems also are described.

A system for powering a prosthetic arm is disclosed. The system includes at least one internal battery located in the prosthetic arm, at least one external battery connected to the prosthetic arm, and a master controller configured to connect either the at least one internal battery or the at least one external battery to a power bus to power the prosthetic arm.

Technology is described to provide a powered prosthetic wrist flexion device or elbow device. This device helps individuals with upper-limb loss to orient and position grasped objects.