Anti-slip attachment and drainage system for prosthetics

Abstract

An anchoring system for a transtibial or transfemoral (above or below the knee) prosthesis. A gel liner is inserted into a socket, and the liner has a dual-strap attachment system including an upper strap and buckle attached upwardly to the liner and passing out through the socket, and a lower strap attached distally to the liner. The liner also has a port attached at a lower distal end for introducing a vacuum into the liner and for evacuating fluids (sweat) therefrom. To accomplish the foregoing, an annular centering puck is attached at the distal end of the socket (at the aperture), the puck having a generally concave side in communication with the aperture for seating the liner therein. The centering puck is formed with a dual passage there through that passes both a vacuum tube and lower strap outward from the liner to exterior of the socket. A vacuum pump is coupled to the vacuum tube, and the liner is securely anchored in the socket by total contact induced by the vacuum force of the pump, and further secured by the first strap and buckle inserted through the socket and fastened to the second strap (passing out through the puck and inserted through the buckle, tightened, and closed upon itself to form a suspension fit which prevents lateral, pivotal and proximal shift.