Method of making an artificial leg
AssigneeVessa Limited
InventorsHarry Eyre, James A. Wood
Life of this patent
Estimating the term…
Abstract
An artificial leg is assembled from a thigh member and a selected one of a plurality of preformed modular endoskeletal shin members each having an identical knee support member and ankle attachment member but differing in length of shin tube. A cellular plastics cosmesis is moulded onto the shin member. A foot may be attached to the shin member with an intermediate disc bearing differentially spaced circumferential teeth on its upper and lower faces which locate in sockets in the ankle attachment member and in the foot to permit fine adjustment of the position of the foot relative to the shin member.
Claims2
An assembly of a shin member and foot for an artificial leg having a disc sandwiched between said shin member and foot, the upper face of the disc and the shin member locating by engagement of a first set of circumferentially spaced teeth in a first corresponding set of sockets and the lower face of the disc and the foot locating by engagement of a second set of circumferentially spaced teeth in a second corresponding set of sockets, said second set of teeth having a different angular spacing from said first set of teeth to permit the making of fine adjustments in the positions of said shin member and foot relative to one another, and a bolt passing through a hole in said disc and locating in an internally threaded anchorage point at the base of the shin member to secure the foot to the shin member against movement longitudinally apart whereby the foot is located in a fixed predetermined angular position relative to the shin member.
Dependencies are inferred from the claim text.