A prosthetic foot cover device with a pressure chamber is described. The prosthetic foot cover may include a lattice framework formed to replace a human foot. An open cavity may be formed in the lattice framework, which is sized and shaped to contain a prosthetic foot. A pressure chamber may be disposed in the lattice framework. A first one-way check valve is provided for the pressure chamber to allow air to be expelled from the pressure chamber and to generate a negative pressure within the pressure chamber as an amputee uses the prosthetic foot and the lattice framework. A remnant limb socket may be connected to the pressure chamber. A negative pressure may be developed in the remnant limb socket as air is pulled from the remnant limb socket into the pressure chamber. A method for additive manufacture of a prosthetic foot cover device is also described.

A prosthetic lower leg uses one or more generally C-shaped spring elements between the patient's socket and a footplate assembly. The respective connections between (a) those one or more elements and (b) that socket and that footplate can be configured to provide a lightweight and economic prosthesis that effectively mimics the feel and performance of a normal human foot. The prosthetic spring element is generally C-shaped, and can have a substantially constant thickness along its length, lending itself to being fabricated by automated processes such as filament winding. One or more of the generally C-shaped spring elements can be incorporated into other prostheses and/or other devices.

A prosthetic device is provided including (a) an ankle component, (b) a foot component coupled to the ankle component, wherein the foot component has a longitudinal length extending at least partially along a sagittal plane of a user when the prosthetic device is in use, wherein the foot component has a thickness extending at least partially along a transverse plane of a user when the prosthetic device is in use, and (c) a coupling mechanism positioned between the foot component and the ankle component, wherein the coupling mechanism couples a rotation of the foot component with respect to the sagittal plane to a rotation of the foot component with respect to the transverse plane.

A prosthetic foot comprising a vacuum system configured to attach to a vacuum attachment apparatus and a residual limb. The prosthetic foot may comprise a resilient bottom member, a resilient top member, and a vacuum system. The resilient bottom member may comprise a front end and a rear end. The resilient top member may comprise a front end and a rear end and the front end of the resilient top member may be connected to the front end of the resilient bottom member. The vacuum system may be coupled to an underside of the rear end of the top member. The vacuum system may comprise a compressible member, a chamber located within the compressible member, a universal valve system received within the compressible member, a passageway connecting the valve system and the chamber, and an air return coupled to the valve system and the vacuum attachment apparatus.

A foot prosthesis that includes at least one spring element, an attachment member, and a heel member. The at least one spring element has a toe end portion, a heel end portion, an upper surface, and a lower surface. The attachment member is mounted to the upper surface and is configured to connect the foot prosthesis to a lower limb prosthesis component. A position of the attachment member is adjustable along a length of the at least one spring element. The heel member is mounted below the lower surface of the at least one spring element, and a position of the heel member is adjustable along the length of the at least one spring element.

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.

The prosthetic foot (101) includes a first heel (102) and a second heel (103). The second heel (103) provides midstance stability during the mid-stage of foot motion, that is, in the stage between the heel strike and the toe-off. The prosthetic foot (101) is not limited to only two heels, but may be extended to include a multiplicity of heels.

A device includes a first member and a second member disposed in series along a longitudinal axis. The device also includes links coupling first joints of the first member to second joints of the second member. The first and second members and the links arranged to define a planar parallelogram linkage. The devices also include a resilient element disposed between the first member and the second member, the first member and the second member preloaded against the resilient element. The first member and the second member are preloaded to provide an arrangement of the first and the second joints in which a motion of the first joints with respect to the second joints is constrained to a direction substantially parallel to the longitudinal axis. The devices further include a sensor for generating a signal indicating a separation between the first member and the second member.

Prosthetic feet that allow for heel height adjustment and/or provide metatarsal joint functionality to more closely mimic natural human feet are provided. A prosthetic foot can include an ankle module having a locking mechanism configured to lock the heel at a particular height. The prosthetic foot can also include a toe region that adapts to varying heel heights. The ankle module and/or locking mechanism can be adjusted, controlled, and/or locked via a hydraulic mechanism. The toe region can curve upward relative to a portion of the foot proximal of the toe region.

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.