A separated prosthetic foot with a transverse arch belongs to the technical field of manufacturing of artificial limbs. The characteristics of the transverse arch of the human foot are combined into the previous transverse-straight carbon fiber foot design to improve the stiffness of the prosthetic foot and reduce the weight of the prosthetic foot. A forefoot part employs a separated curved plate design, and two simple curved plates with different curvatures are used for simulating a complex curved surface of the transverse arch of the human, such that the manufacturing cost is reduced, and the various parts of the sole are non-uniform in stiffness distribution: the outer side of the foot is a single-layer forefoot plate with a smaller curvature and minor stiffness; and the inner side of the foot is a double-layer stacked forefoot plate, and the lower layer plate has a large radius in curvature and stiffness.

A prosthetic device includes a footshell having a first portion and a second portion. The first portion has a first portion polymer lattice structure and the second portion has a second portion polymer lattice structure. The first portion polymer lattice structure has a first set of mechanical properties and the second portion polymer lattice structure has a second set of mechanical properties different from the first set of mechanical properties. The footshell also includes a sole attached to a bottom of the first portion and the second portion, wherein the sole is formed of a solid material.

The present invention provides a mechanical prosthetic limb, which relates to the technical field of medical devices. The mechanical prosthetic limb includes a prosthetic limb shank, a fixed component for connecting the prosthetic limb shank with a human body, a power-driven first drive mechanism that is installed on the prosthetic limb shank, and a prosthetic limb sole that is connected to the bottom of the prosthetic limb shank; the fixed component is rotationally connected with the prosthetic limb shank through the first drive mechanism; and the prosthetic limb shank is rotationally connected with the prosthetic limb sole through the first drive mechanism. It can relieve the burdens of the disabled in the automatic advance way, thereby improving convenience.

In an embodiment, a prosthetic leg including a modular knee element coupled to a modular ankle element. The modular knee element includes a knee motor rotatable about an axis of a shaft in the knee motor. The modular ankle element includes a drive portion coupled to a surface-contacting portion via a pylon having a top and bottom end. The top end is coupled to the drive portion and the bottom end is coupled to the surface-contacting portion. The drive portion includes an ankle motor coupled to a rotary series elastic actuator (RSEA) and a first pulley coupled to the RSEA. The surface-contacting portion includes a hinge and a second pulley with a belt engaging at least a portion of at least one of the first and second pulley, and a modular foot element coupled to the bottom of the hinge.

A joint for a prosthesis comprises a prosthesis part and a body part. The two parts are connected by a connection part. A first pair of engaging sets of abutments is provided on the connection part and the prosthesis part and a second pair of engaging sets of abutments is provided on the connection art and the body part. By adjusting position of the connection part, the first pair of sets are disengageable and by further adjusting the position, the second pair of sets are also disengageable. This allows for adjustment of the joint at two levels. A prosthesis includes two stripes of resilient material of which at least one has a curved part and a straight part. The joint is provided at a distal end, at the concave part of the strips. At straight parts, the strips cross and one strip extends beyond the other.

A traction system for an ambulatory support such as a prosthetic foot blade or a crutch includes a sole plate, a latch assembly, and a strap. The sole plate is couplable to a distal end of the ambulatory support to extend under a bottom side of the ambulatory support and a latch assembly. The latch assembly includes a front catch and a rear catch both fixable at a top side of the ambulatory support with the front catch nearer to the distal end of the ambulatory support than the rear catch, and a lever having a front end and a rear end, the front end releasably latchable to the front catch and the rear end releasably latchable to the rear catch when the lever is pivoted about the latched front end. The strap is secured to the lever and to the sole plate.

A split toe blade comprising a medial toe member, a lateral toe member that is disposed adjacent to the medial toe member, and a connecting web that is disposed between the medial toe member and the lateral toe member. The preferred connecting web controls the amount of traverse compliance in the event an off-axis load is applied to the blade. A method comprising providing a split toe blade and applying an off-axis force to the blade.

An attachment system for use with a prosthetic device includes a first component including a first surface, and further including one of a channel and a projection disposed on an opposite side of the first component than the first surface. A second component including a second surface, and including the other of the channel and the projection disposed on an opposite side of the second component than the second surface, the other slidably engaging the channel or the projection to selectively couple the first component and the second component together. One of the first surface and the second surface is operable to be attached to the prosthetic device, and the other is operable to be attached to a sole structure having a ground-engaging surface.

An artificial foot having a longitudinal axis extending from a heel area to a toe area, a length, a width and a height is provided. The artificial foot includes a connection to a lower leg part, an upper supporting structure in the direction of height, an elastic sole structure extending from the heel area to the toe area, an elastic connecting element arranged between the upper supporting structure and the sole structure, and a coupling system. The upper supporting structure is connected to the sole structure approximately in a middle of the foot with respect to its length by means of the coupling system. The coupling system allows a relative tilting motion between the upper supporting structure and the sole structure while keeping a distance between the upper supporting structure and the sole structure in a middle of the coupling system constant, at least while a patient places weight on it when standing.