A limb prosthesis includes a liner, a shell, and at least one sealing member. The at least one sealing member is secured to and circumferentially surrounds the liner. The at least one sealing member is disposed between the liner and the shell and enhances security of the attachment of the shell to the liner.

Valve for a prosthesis socket, the socket delineating an open cavity to receive a stump of an amputated limb and delineating a pass-through hole opening into the cavity and designed to receive the valve, the valve including a support in which a pass-through channel is formed and an element movable between an outlet position in which the element allow an air flow out of the channel in an outlet direction and a sealing position in which the element prevent any air flow inside the channel in an opposite direction to the outlet direction, the support including a thread configured to mount the support in removable manner inside the pass-through hole, and to enable disassembly of the support in an opposite direction to the outlet direction.

A vacuum suspension system includes a rigid socket defining a socket wall having exterior and interior surfaces. The socket defines an aperture extending between the exterior and interior surfaces, and has a closed distal end and an open proximal end with an interior cavity defined by the interior surface. A fluid regulator is provided at the aperture and operatively engages the fluid regulator. A pump system includes a pump and a covering for securing over the exterior surface of the socket and carrying the pump. The pump is configured for placement proximate to the fluid regulator and arranged for drawing air from the socket through the aperture. A chamber having a variable volume is formed by a space defined between the exterior surface and an inner surface of the covering proximate to the pump.

A prosthetic liner includes a flexible elongate, generally conical body portion formed from an elastomeric material. The body portion defines an inner surface, an outer surface forming a liner profile between a distal end and a proximal end, and an axis extending between the distal and proximal ends. At least one seal element extends circumferentially about the axis and protrudes radially outward a distance from the liner profile. The at least one seal element has a seal height defined between the liner profile and a radially outward end of the at least one seal element. The seal height varies circumferentially about the axis between a first seal height and a second seal height.

Prosthetic socket sealing systems and methods of use. Embodiments of the present invention include various combinations of sealing elements that are associated with a rigid prosthetic socket and act to seal the socket interior against air intrusion or escape via the open proximal end thereof. The socket interior may thus be evacuated for purposes of vacuum suspension or otherwise.

The invention relates to prosthetic knee joint comprising an upper part, which has an upper connecting means, and a lower part, which is pivotably mounted on the upper part and which has a lower connecting means. A vacuum pump with an inlet and an outlet, said pump being driven by the relative movement of the upper part to the lower part, is associated with the prosthetic knee joint.

The invention concerns a prosthesis liner for application to a limb stump, with an elastic liner layer (20) of elastomer, wherein the liner layer (20) has pores (26) in at least one distal portion (30) thereof.

A prosthetic system includes first and second parts rotatable relative to one another about a joint. The first and second parts are adapted to form at least part of a weight bearing connection between a prosthetic foot and a socket. A pump system includes a pump mechanism operatively connected to the first and second parts. Rotation of the first part and/or the second part about the joint moves the pump mechanism between an original configuration in which the volume of a fluid chamber defined by the pump mechanism is zero or near-zero, and an expanded configuration in which the volume of the fluid chamber is increased.

A lower limb prosthesis comprises a foot component and an ankle unit pivotally mounted to the foot component. The ankle unit comprises an ankle joint mechanism comprising a hydraulic piston and cylinder assembly for providing hydraulic damping whenever the ankle joint flexes, and a vacuum mechanism comprising a pneumatic piston and cylinder assembly for generating a vacuum. The hydraulic and pneumatic piston and cylinder assemblies are arranged such that the vacuum mechanism generates a vacuum during plantar-flexion of the ankle unit.

An improved prosthetic device with a vacuum system for maintaining a negative pressure seal between the socket and the residual limb. The vacuum system includes a vacuum surge chamber which maintains seal vacuum and increases the time between recharging a Li ion battery, allowing the battery to be recharged-up to 500 times. The system is small, lightweight, and concealable within the prosthetic device so that it neither impedes use of the device nor detracts from a cosmetically accurate limb.