Tumor type artificial ankle joint prosthesis

Abstract

The invention discloses a tumor type artificial ankle joint prosthesis. The tumor type artificial ankle joint prosthesis comprises a fixing plate, a semicircular block and an arc block, wherein the fixing plate is mounted at the upper end of a connecting block I, rotating blocks are mounted at the upper end of the fixing plate in a front-and-back symmetric manner, rotating shafts are arranged in the rotating blocks and rotationally connected with the rotating blocks, the arc block is arranged above the fixing plate, the lower end surface of the arc block is a camber surface, fixing blocks aremounted in positions, corresponding to the rotating blocks, of front and back ends of the arc block, a connecting rod is arranged at the lower end of the fixing block, the semicircular block is mounted in the middle of the upper end of the fixing plate, multiple support rods are mounted on the outer surface of the semicircular block, three support rods are distributed at equal intervals, stop blocks are mounted at upper ends of the support rods in a front-and-back symmetric manner, a fixing rod is arranged between every two corresponding stop blocks, outer surfaces of the fixing rods are sleeved by rollers, the rollers are rotationally connected with the fixing rods, and outer surfaces of the rollers make contact with the camber surface of the lower end of the arc block. The tumor type artificial ankle joint prosthesis is simple in structure, low in cost and capable of strengthening stability of artificial ankle joints.

Description

technical field [0001] The invention relates to an ankle joint prosthesis, in particular to a tumor type artificial ankle joint prosthesis. Background technique [0002] The ankle joint is composed of the articular surfaces of the lower ends of the tibia and fibula and the trochlea of ​​the talus, so it is also called the talus calf joint. The lower articular surface of the tibia and the medial and lateral malleolus articular surfaces together form the "冂"-shaped joint fossa, which accommodates the trochlear (joint head). Since the trochlear joint is wide in front and narrow in the rear, when the foot is dorsiflexed, the wider front part enters In the fossa, the joint is stable; but in plantar flexion, such as when the narrow rear part of the trochlea enters the fossa when walking downhill, the ankle joint is loose and can move laterally. At this time, the ankle joint is prone to sprains, and varus injuries are the most common. , because the lateral malleolus is longer and ...

AI Technical Summary

Problems solved by technology

[0003] Various severe traumas, inflammations, tumors, and deformities of the ankle joint can lead to serious loss of ankle joint function and affect the quality of life of the patient. An ankle joint prosthesis needs to be used. In the prior art, the installation of the ankle joint is complicated and the cost is high. poor stability

Images