The present invention provides a prosthetic hand capable of multiple grasp types. The prosthetic finger units are underactuated both within and between the finger units using a differential mechanism arrangement. The locking movement of the prosthetic thumb unit is coupled to the differential mechanism. As the user repositions the prosthetic thumb unit, the differential mechanism is effected as to alter both the initial positions and force distribution of the prosthetic finger units. The present invention further provides an additive manufacturing molding method for making the same.

A model-based neuromechanical controller for a robotic limb having at least one joint includes a finite state machine configured to receive feedback data relating to the state of the robotic limb and to determine the state of the robotic limb, a muscle model processor configured to receive state information from the finite state machine and, using muscle geometry and reflex architecture information and a neuromuscular model, to determine at least one desired joint torque or stiffness command to be sent to the robotic limb, and a joint command processor configured to command the biomimetic torques and stiffnesses determined by the muscle model processor at the robotic limb joint. The feedback data is preferably provided by at least one sensor mounted at each joint of the robotic limb. In a preferred embodiment, the robotic limb is a leg and the finite state machine is synchronized to the leg gait cycle.

This disclosure relates to the field of prosthetics, more specifically to a pinless anthropomorphic hinge or joint, and a digit comprising one or more phalanges connected by and articulating around pinless joints, whereby the joints provide compliant movement in more than one plane. This disclosure also relates to modular prosthetic systems comprising multiple digits, in particular for partial-hand replacements.

The present invention is a switchable gripping terminal device that can be switched from a voluntary open prehension mode to a voluntary closed prehension mode, at will by the user. In an embodiment of the present invention, the terminal device may comprise a movable digit attached to a fixed digit, whereby the user can actuate the movable digit, such that the movable digit rotates relative to the fixed digit. The terminal device may comprise a lever, which enables the user to switch from a first mode, voluntary open (VO), to a second mode, voluntary closed (VC). This switchable biasing means, allows the user to decide the prehension mode, and easily switch the mode at will, according to the circumstances.

An artificial hand system can be controlled with an intelligent wrist configuration in order to reduce the physical and mental load/discomfort on the muscles of an individual using a hand prosthesis while using the said hand.

A graft compression system for compressing soft tissue grafts used in connection with reconstructive surgery. The graft compression system includes an upper press body and lower press body, pivotally couple to one another, each having inner sides having a plurality of parallel semi-circular shaped channels formed thereon. The plurality of parallel semi-circular shaped channels have sequentially decreasing channel widths. The upper press body and said lower press body of the graft compression system are configured to pivot about a pivot pin such that the inner sides abut one another, and such that the two sets of semi-circular shaped channels are substantially aligned with one another so as to receive a graft for compression. A screw press barrel is attached to the lower press body, on a side opposite the pivot pin, and is configured to compress the upper press body and lower press body.

A graft compression system for compressing soft tissue grafts used in connection with reconstructive surgery. The graft compression system includes an upper press body and lower press body, pivotally couple to one another, each having inner sides having a plurality of parallel semi-circular shaped channels formed thereon. The plurality of parallel semi-circular shaped channels have sequentially decreasing channel widths. The upper press body and said lower press body of the graft compression system are configured to pivot about a pivot pin such that the inner sides abut one another, and such that the two sets of semi-circular shaped channels are substantially aligned with one another so as to receive a graft for compression. A screw press barrel is attached to the lower press body, on a side opposite the pivot pin, and is configured to compress the upper press body and lower press body.

A prosthetic wrist unit providing a connection between the arm and a hand mechanism, comprising a wrist base unit with at least one connection slot into which the hand mechanism is to be inserted and at least one connecting piece enabling the rotational movement of the prosthetic wrist unit; a joint including a joint seat and a joint body; a locking mechanism comprising a locking mechanism opening into which the joint body is inserted and enabling the prosthetic wrist unit to operate in two positions, i.e., fixed or movable; an arm coupling unit into which the joint and the locking mechanism are inserted and which restricts the movement of the joint and the locking mechanism; and at least one tendon ensuring the joint stiffness of the prosthetic wrist unit.

A prosthetic foot having a base spring having a toe end portion and a heel end portion, and a top spring assembly. The top spring assembly includes a first spring member having a distal end and a proximal end, a second spring member spaced apart from the first spring member along substantially an entire length of the first spring member, the second spring member having a distal end and a proximal end, a first bond connection provided between the distal ends of the first and second spring members, a second bond connection provided between the distal end of the second spring member and a top surface of the base spring in a forefoot portion of the base spring, and a spring connector extending through at least a first hole formed in the base spring, the second bond connection and the second spring member.