Patent ID: 8679194

Claim:
An expulsion liner for use with a prosthetic device to be secured to a residual limb, the expulsion liner comprising: an elongated elastomeric tube formed of an elastomeric material having a closed distal end and an open proximal end, and defining an interior space configured to receive the residual limb, the closed distal end including a reinforcing feature comprising a localized increased stiffness area of the elastomeric material defined by a distal end thickness of the tube, the distal end thickness defining a channel extending through an entirety of the thickness between the interior space and an external environment; and a one-way valve positioned solely within the thickness of the localized increased stiffness area in the elastomeric material of the closed distal end and providing controlled fluid communication between the interior space and the external environment, a portion of the channel extending between the one-way valve and an outer periphery of the tube; wherein the one-way valve is centrally located at the bottom of the distal end of the liner.