Artificial ankle joint with cushion structures and prosthetic de

Details Artificial ankle joint with cushion structures and prosthetic de Artificial ankle joint with cushion structures and prosthetic de

1995-10-03

1998-03-17

Willse, David H.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Leg

Ankle

623 52, A61F 266

Patent

active

057281750

ABSTRACT:
An ankle joint, and a prosthetic device incorporating such ankle joint, pivots to imitate the action of a normal ankle and foot. The ankle joint includes a socket secured to an artificial foot and a shank portion that connects at a distal end of a residual lower leg extremity. The shank has a head that is rotatably mounted in the socket so that it pivots between first and second positions about a neutral position. Springs bias the shank into the first position corresponding to plantarflexion orientation of the foot. A first cushion attenuates pivoting action and force of impact at the first position, and an optional second cushion attenuates pivoting action and force of impact at the second position. The socket is connected to the foot by a mounting plate assembly, and side bumpers are provided to resist lateral torque forces. The pitch of the socket, and thus the shank portion, is selectively adjustable. A locking mechanism acts to releasably lock the ankle joint in the neutral position when under a compressive load from the weight of the amputee. The ankle is constructed with elements that reduce mechanical noise during use.

REFERENCES:
patent: 1069409 (1913-08-01), Gainos et al.
patent: 1071230 (1913-08-01), Hanger
patent: 1112819 (1914-10-01), McFarland
patent: 2475372 (1949-07-01), Catranis
patent: 2617115 (1952-11-01), Ellery
patent: 2843853 (1958-07-01), Mauch
patent: 5425780 (1995-06-01), Flatt et al.

Affiliated with

Also associated with

Rating

Artificial ankle joint with cushion structures and prosthetic de does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Artificial ankle joint with cushion structures and prosthetic de, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Artificial ankle joint with cushion structures and prosthetic de will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-953824