An enveloping body for at least partly enveloping a limb, comprising an enclosed volume and a connection for supplying fluid to the volume and discharging it from the volume, wherein the enveloping body defines an inner circumference and an outer circumference, wherein the inner circumference of the enveloping body increases as the pressure of the volume increases.

A method of placing a prosthetic system over a residual limb, said method comprising the steps of: providing the prosthetic system; and placing an outer shell of the prosthetic system on the residual limb having an above-knee amputation, the outer shell at least partially surrounds the residual limb, an outer side and an inner side of the outer shell on opposite sides of the residual limb, an upper edge of the outer side above a greater trochanter, the inner side below a lowest edge of an ischium without being directly below the lowest edge of the ischium.

A prosthetic liner for insertion within a socket of a prosthetic limb is provided. The prosthetic liner comprises a body having inflatable bladders and pressure sensors disposed thereon, an electronic circuit, one or more actuators, and a processor. The body receives a residual limb on an interior surface and contacts the socket on an exterior surface. The processor receives a digital pressure signal indicative of a detected pressure from each pressure sensor via the electronic circuit and selectively activates the actuators to adjust a pressure in one or more of the inflatable bladders based on the digital pressure signals and the region of the body corresponding to each digital pressure signal.

Systems and methods are described herein for a prosthetic device that includes a rigid outer shell socket with an inner surface contour. A prosthetic insert socket is manufactured via a manufacturing process, such as three-dimensional printing, to have an outer contour that corresponds to the inner surface contour of the premade outer shell socket. The prosthetic insert socket is manufactured to have an inner contour that corresponds to a residual limb surface contour of a patient.

A brim is provided for securing to a proximal end of a prosthetic rigid socket. The brim includes a cuff section arranged to flexibly extend about and upwardly or proximally from a peripheral proximal end of the socket; and an interface section defining a lower or distal portion of the brim and extending distally from the cuff section, the interface section adhering to the inner surface of the socket. A prosthetic socket system includes the socket and the brim.

A prosthesis stem includes a stem body for receiving an amputation stump and an insertion aid apparatus, which facilitates the insertion of the amputation stump into the stem body, wherein the insertion aid apparatus comprises an insertion inlay which is connected in the proximal edge region thereof to a holding apparatus which is fixed to the stem body. The insertion inlay has an insertion stocking, which is movable between an outer position, in which the insertion inlay is at least partially located outside of the stem body, and an inner position, in which the insertion stocking covers the stem body.

Methods and systems for cushioning a residual limb in a prosthetic generally comprise prosthetic limb devices, sockets, bladders, and valve stems. In a preferred embodiment, the residual limb/stump is configured and arranged within the socket and rests on the bladder. The valve stem coupled to the bladder is configured and arranged through the bottom of the socket to allow quick and easy inflation of the bladder. In some embodiments, the present invention also includes upper thigh attachments which may include ball bearings, axles, and thigh straps. In another preferred embodiment, the upper thigh attachment allows the user to securely and adjustably attach the prosthetic limb device to the user's upper thigh.

A dynamic support system includes a control system for controlling inflation and deflation of at least one actuator having an inlet connectable to the a control unit of the dynamic support system. The control unit may be in communication with a sensor and may control inflation and deflation of the at least one actuator in response to information provided by the sensor.

A friction-based prosthetic retention system includes a prosthetic socket and a plurality of hydraulic actuators attached to an interior surface of the prosthetic socket. A socket liner is positioned over the plurality of hydraulic actuators and includes a plurality of friction elements. A limb liner is placed over a residual limb to be secured within the prosthetic socket. The limb liner includes a plurality of friction pad projections arranged to engage with the plurality of friction elements on the socket liner. A controller is attached to the prosthetic socket and is fluidly coupled to the plurality of hydraulic actuators. The controller is configured to control the plurality of hydraulic actuators to apply pressure to the socket liner to engage the plurality of friction elements of the socket liner with the friction pad projections of the limb liner to retain the prosthetic socket.

An intra-frame positioning sling may be disposed internally within a prosthetic socket frame. The sling may include one or more proximal suspension portions adapted to suspend from a proximal aspect of the frame and a tensioning system. The sling may include a first longitudinal side with one or more proximal suspension portions and an opposite longitudinal side that includes the residual limb interfacing or force application portion of the sling. When the tensioning system is tensioned, the sling is pulled toward the first longitudinal side of the prosthetic socket frame. A set of two positioning slings may be rigged in a transfemoral prosthetic socket frame; one sling applies force on a medial side of a hosted residual limb, and the other sling applies force on the lateral side.