Patent ID: 7985264
Filing Date: 2011-07-26
Classification: A61F

Abstract:
1. An artificial knee joint, comprising: a joint support, which forms an upper jointing hole that joints an upper end of an outside link with an upper pivot penetrating therethrough and a lower jointing hole that joints an upper end of an upper link; a brake block, which forms an upper jointing hole that joints a lower end of the upper link and a lower jointing hole that joints an upper end of a connector, the brake block forming a positioning slot that movably receives a positioning axle extending therethrough; a hydraulic cylinder, which has an upper piston-rod end coupled inside the joint support and a lower cylinder-barrel end arranged inside the brake block; said connector, which forms a jointing hole in an upper end thereof and has a lower portion connected to an artificial shank and an upper end portion forming in a rear section thereof a positioning axle bore for receiving and supporting the positioning axle; and a second outside link which has an upper end jointed to the upper jointing hole of the joint support by the upper pivot extending therethrough and a lower end jointed to the jointing hole of the connector by a lower pivot extending therethrough; characterized in that the connector contains therein a cylinder barrel having an upper open section movably receiving a piston therein and a lower open section receiving and mating an adjusting bolt therein, a resilient element being set between the adjusting bolt and the piston, the piston being set against a lower end of the brake block, whereby the resilient element and the piston apply a reaction force to the lower end of the brake block for cushioning purposes.