Patent ID: 7618464

Claim:
A prosthetic foot device having a layer with laterally variable stiffness, the device comprising: a) a foot member, configured to be coupled to an amputee, including an upper member having an attachment section configured to be coupled to a socket, and extending downwardly therefrom; b) a heel member, disposed adjacent the foot member, including an upper member and extending downwardly and forwardly to a location corresponding to an approximate arch location of the user and rearwardly from the approximate arch location to an approximate heel location of the user; c) a sole plate, disposed below the foot member, and having a heel section disposed at a natural location of a heel of a user and a toe section disposed at a natural location of a toe of the user; and d) a layer with laterally variable stiffness, disposed above sole plate and having a medial portion, a lateral portion, and an intermediate portion between the medial and lateral portions; e) the lateral portion and the medial portion having different stiffness; and f) the intermediate portion having a greater stiffness than the medial and lateral portions.