A wrist device for a prosthetic limb is provided. The device (1) comprises a base member (3) connectable to the wearer of the device, and a support member (13) connectable to the limb. The support member (13) is pivotably connected to the base member (3) such that the support member can pivot about a pivot axis (A) relative to the base member. A damping mechanism is located between the base (3) member and the support member (5). The damping mechanism comprises a pinion (47) connected to the support member (5) and rotatable about the pivot axis (A) relative to the base member (3). A rack (35) is engaged with the pinion (47) such that rotational motion of the pinion causes a linear motion of the rack, and at least one biasing member (41) extends between the base member (3) and the rack. The biasing member (41) biases the rack (35) and support member (13) into a neutral position. A prosthetic limb incorporating the wrist device is also provided.

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.

The present application describes a mechanical hand (100) comprising a plurality of finger assemblies (102) each selectively moveable by a respective finger drive assembly about a finger pivot axis along a finger flexion/extension plane and between a finger open position and a finger closed position; a thumb assembly (104) selectively rotatable by a first thumb drive assembly about a first thumb axis between an opposed position and a non-opposed position with respect to the finger assemblies, and selectively moveable by a second thumb drive assembly about a second thumb axis along a thumb flexion/extension plane and between a thumb open position and a thumb closed position; a controller operatively coupled to the finger and thumb drive assemblies; and a selector operatively coupled to the controller for selecting a desired thumb rotational position or a desired grip to be defined by the finger assemblies and the thumb assembly. A method of operating a mechanical hand is also described.

The present application describes a prosthetic or robot part (500), comprising at least one phalange member (532) pivotally coupled to a base (509) at a pivot axis; and a drive assembly to selectively move the phalange member about the pivot axis along a flexion/extension plane between an open position and a closed position, said drive assembly comprising a drive element (512) coupled to an actuator (506) and a driven element (514) coupled to the phalange member; wherein the driven element (514) is decouplable from the drive element (512) when the phalange member is caused to move in a first rotational direction about the pivot axis by an external force.

A prosthetic limb including a plurality of segments that provide a user of the prosthetic limb 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. The prosthetic limb includes a controller and at least one antenna in connection with the controller for transmitting and receiving signals, the at least one antenna including a housing of a segment of the prosthetic limb as a radiating element. The prosthetic limb further including a user interface incorporated therein and one or more communication systems for communicating with external devices. The user interface is integrally formed in the housing and includes a status indicator for displaying information. A flexible protective cover is disposed around a portion of the housing and covers the user interface, the flexible protective cover includes a translucent portion over the status indicator.

A system and method for transmission of a signal for a powered assistive device has a sensor node with a wireless transmitter adapted for digitally transmitting a transmitted signal, the sensor node adapted for receiving and monitoring a sensor signal from a sensor attached to a user, and a master node with a controller and a wireless receiver for receiving the transmitted signal from the wireless transmitter. The master node processes the transmitted signal and communicates a control signal to the powered assistive device. The wireless transmitter transmits the transmitted signal at a first rate when the wireless transmitter adapted to transmit the transmitted signal at a first rate when the sensor signal is indicative of the rest state and to transmit the transmitted signal at a second rate when the sensor signal is indicative of the active state, the second rate being greater than the first rate.

A wrist device for a prosthetic limb is provided. The device (1) comprises a base member (3) connectable to the wearer of the device, and a support member (13) connectable to the limb. The support member (13) is pivotably connected to the base member (3) such that the support member can pivot about a pivot axis (A) relative to the base member. A damping mechanism is located between the base (3) member and the support member (5). The damping mechanism comprises a pinion (47) connected to the support member (5) and rotatable about the pivot axis (A) relative to the base member (3). A rack (35) is engaged with the pinion (47) such that rotational motion of the pinion causes a linear motion of the rack, and at least one biasing member (41) extends between the base member (3) and the rack. The biasing member (41) biases the rack (35) and support member (13) into a neutral position. A prosthetic limb incorporating the wrist device is also provided.

Features for a prosthetic wrist and associated methods are described. The wrist couples with a prosthetic socket and a prosthetic hand. The wrist may rotate the hand. The wrist includes features to prevent or mitigate undesirable separation of the wrist from the socket. The wrist may have an expanding coupling, such as an expanding ring, to better secure the wrist with the socket. An actuator may cause the coupling to expand outward to prevent or mitigate undesirable separation of the wrist from the socket. Alternatively or in addition, the wrist may include torque control features to prevent undesirable or premature separation of the hand from the wrist, for example when using a “quick wrist disconnect” (QWD) apparatus. A torque control method may tailor or limit multiple torques to be applied by the wrist to the hand based on operational requirements and phases, such as anticipated torque loads and operational timing.

The invention relates to a hand prosthesis that can be adapted at the forearm or wrist. The prosthesis including a mechanical design with a smaller number of parts than the prior art, thus facilitating the assembly, maintenance and production thereof. Likewise, the prosthesis includes a plurality of motion transmission systems in a housing similar to the volume of a biological hand and provides sufficient grip strength to reincorporate the user into everyday activities. The invention includes an adult hand prosthesis, a child hand prosthesis and a wrist that allows the user to hold heavy loads while moving around.

A robotic assembly control system is disclosed. The robotic assembly control system includes an exoskeleton apparatus adapted to be worn by a user, at least one robotic assembly, the at least one robotic assembly controlled by the user by way of the exoskeleton, and at least one mobile platform, the at least one mobile platform controlled by the user and wherein the at least one robotic assembly is attached to the at least one mobile platform.