A hollow tubulous composite structure and method for prosthetic limbs is described.

A prosthetic device includes an elongate support member of carbon filament material having a first surface, and an adapter. The adapter includes a compressible member, a base portion having a contact surface arranged to contact the first surface of the support member, a cavity sized to receive the compressible member, and a connector portion extending from the base portion and configured to releasably secure the prosthetic foot to a prosthesis, wherein application of a force to the connector portion compresses the compressible member to dampen movement of the base portion relative to the support member until the contact surface contacts the first surface.

A hollow tubulous composite structure and method for prosthetic limbs is described.

A prosthetic foot has a frame, a forefoot keel, a heel keel, and an adjustable spring member. The frame couples to a prosthetic leg. The forefoot keel includes a first resilient substrate extending from the frame to the anterior end of the foot. The heel keel member includes a second resilient substrate extending from the frame to the posterior end. The first and second resilient substrates are load bearing substrates for a walking human. The adjustable spring member includes a third resilient substrate and a brake. The third resilient substrate has a first end directly or indirectly coupled to the brake, and a second end coupled to the forefoot keel proximate to the anterior end. The third resilient substrate extends through or around the first resilient member and the second resilient member. The brake provides resistance to the travel of the first end of the third resilient substrate in the superior direction.

A prosthetic foot and method of fabricating the same is disclosed which includes a socket assembly configured to connect to a natural limb of a patient, a sideway cylindrical ankle joint having a maze-like internal structure laterally affixed to the socket assembly; a foot assembly, laterally affixed to the sideway cylindrical ankle joint, having a dorsal portion, a phalange portion, a sole portion, and a heel portion; the phalange portion having a first end connected to the dorsal portion and a second end connected to the sole portion, the sole portion having a curve shape and connected to the heel portion; and the heel portion having a spring assembly connected to said cylindrical ankle joint.

A prosthetic foot has a frame, a forefoot keel, a heel keel, and an adjustable spring member. The frame couples to a prosthetic leg. The forefoot keel includes a first resilient substrate extending from the frame to the anterior end of the foot. The heel keel member includes a second resilient substrate extending from the frame to the posterior end. The first and second resilient substrates are load bearing substrates for a walking human. The adjustable spring member includes a third resilient substrate and a brake. The third resilient substrate has a first end directly or indirectly coupled to the brake, and a second end coupled to the forefoot keel proximate to the anterior end. The third resilient substrate extends through or around the first resilient member and the second resilient member. The brake provides resistance to the travel of the first end of the third resilient substrate in the superior direction.

A self-adjusting adapter for a prosthetic leg having a foot and a leg socket has a low stiffness spring having a central opening, a high stiffness spring that has a central opening and is adjacent the low stiffness spring, a shaft or a bolt passing through the central opening in the low stiffness spring and the central opening in the high stiffness spring and a spring stiffener configured and positioned to restrain movement of the high stiffness spring relative to the low stiffness spring in a direction parallel to the low-stiffness spring. A connector for attaching the adapter to a leg socket is connected to the bolt or shaft and is capable of pivoting about an axis through the bolt or shaft. The adapter can be used an add-on component for existing prosthetic legs, or it can be integrated with foot design for the ankle-foot product category.

A prosthetic leg apparatus for use with a user's stump, comprising: a socket, wherein the socket is constructed of a thermoplastic material; a pylon assembly, connected to the socket and adjustable in length; and, a foot portion, connected to the pylon assembly.

A self-adjusting adapter for a prosthetic leg having a foot and a leg socket has a low stiffness spring having a central opening, a high stiffness spring that has a central opening and is adjacent the low stiffness spring, a shaft or a bolt passing through the central opening in the low stiffness spring and the central opening in the high stiffness spring and a spring stiffener configured and positioned to restrain movement of the high stiffness spring relative to the low stiffness spring in a direction parallel to the low-stiffness spring. A connector for attaching the adapter to a leg socket is connected to the bolt or shaft and is capable of pivoting about an axis through the bolt or shaft. The adapter can be used an add-on component for existing prosthetic legs, or it can be integrated with foot design for the ankle-foot product category.

A prosthetic foot has a frame, a forefoot keel, a heel keel, and an adjustable spring member. The frame couples to a prosthetic leg. The forefoot keel includes a first resilient substrate extending from the frame to the anterior end of the foot. The heel keel member includes a second resilient substrate extending from the frame to the posterior end. The first and second resilient substrates are load bearing substrates for a walking human. The adjustable spring member includes a third resilient substrate and a brake. The third resilient substrate has a first end directly or indirectly coupled to the brake, and a second end coupled to the forefoot keel proximate to the anterior end. The third resilient substrate extends through or around the first resilient member and the second resilient member. The brake provides resistance to the travel of the first end of the third resilient substrate in the superior direction.