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.

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 prosthesis and control approach using electromyography (EMG) data and motion data. EMG sensors and a motion sensor provide inputs to generate control signals. The EMG sensor detects EMG signals from the user's body. The motion sensor may be one or more inertial measurement sensors (IMS) and/or a magnetic field sensor. The EMG and motion data is analyzed according to various techniques to provide control of one or more actuatable prosthetic joints of an upper limb prosthesis, such as a prosthetic elbow, wrist, hand, and/or digits.

An outer frame for a prosthetic limb is provided. The outer frame is formed from one or more parts and has a plurality of air flow openings.

A hand prosthesis base body having an outer side, a motor, and a first rotatable shaft which is connected with an output shaft of the motor. The first rotatable shaft has a coupling element for a detachably coupling at least one finger element to the rotatable shaft.

Features for prosthetic digits are described. The digits mimic natural fingers by having multiple articulating segments, for example three, that can rotate varying amounts. Actuation systems for the prosthetic digits may include a compact actuator that expands linearly to rotate the digit. Each digit may have its own actuator, which may be housed in the digit and/or the palm. A motor may rotate a leadscrew. The leadscrew may engage and move axially a housing or other member. Axial movement of the housing or member causes the proximal digit segment to pivot and thus the digit to articulate. In some embodiments, the leadscrew may rotate a wheel to actuate a tendon. An actuation tendon may cause a closing rotation of the digit segments, and a return tendon may cause an opening rotation.

Embodiments include a prosthetic thumb device that includes a track configured to attach to a prosthetic socket, a carriage, and a locking mechanism. The carriage can include a first component that couples to the track such that the carriage is operable to move along the track, and a second component that is configured to couple with a prosthetic digit and operable to rotate with respect to the first component. The locking mechanism can be coupled to the carriage and configured such that, in a first state, it prevents the carriage from moving along the track in a first direction and, in a second state, it allows the carriage to move along the track in the first direction. Embodiments can also include the track having a curved profile, and the carriage is operable to move along the curved profile of the track.

A digit prosthesis assembly is described. Embodiments of the digit prosthesis assembly include, but are not limited to, an attachment assembly, a thumb assembly, one or more finger assemblies, a pinky finger assembly, a palm engagement assembly, and combinations thereof.

A prosthetic limb in amputation rehabilitation, having a forearm and a hand with four fingers and a thumb, with the wrist and the fingers & thumb thereof being fully independently controlled by nerve signals originating in the amputee's brain and not being controlled by the actions of nearby muscles in the amputee's upper arm or shoulder. Control of the prosthesis is achieved by a fully contained electronic unit in the forearm of the prosthesis that receives neural signals from the brain, converts the analog neural signals to digital signals that are fed into an artificial intelligence engine circuit that utilizes a library of algorithms to learn from the brain what the signals are that will produce a desired hand and finger movement, then convert its computed digital output to analog electrical signals that are fed to the prosthetic hand and finger to produce actual motion as instructed by the brain.

A prosthetic appendage for attachment to an outer extremity of an amputated limb that is composed of modular elements fabricated by three-dimensional printing. In one embodiment the prosthetic appendage is a leg. The prosthetic leg includes a foot portion and a plurality of modular and three-dimensionally printed limb elements. One of the plurality of limb elements is pivotally coupled to the foot portion and another of the limb elements is configured at one end to receive the outer extremity of the amputated leg. In another embodiment of the present invention the prosthetic appendage is a hand. The prosthetic hand includes a wrist element with one end configured to receive the outer extremity of an amputated hand, a base portion attached to the wrist element and a plurality of modular and three-dimensionally printed finger elements selectively coupled to adjacent finger elements or the base to form prosthetic fingers.