Artificial bone joint friction and abrasion test device

Abstract

The invention relates to the field of instrument science or biomimetic robots, in particular to an artificial bone joint friction and abrasion test device which comprises an L-shaped base. A cylinder is fixedly arranged at the top end of the base, and a push rod which is vertically arranged is arranged on a piston rod of the cylinder. A first bevel gear is fixedly arranged on the rear portion of the push rod, and a second bevel gear meshed with the first bevel gear is arranged on the bottom face of the push rod. The push rod is concentric with the second bevel gear, and a rolling bearing is arranged in the second bevel gear. The push rod is connected with the second bevel gear through the rolling bearing, and a joint head is fixedly arranged on the lower portion of the second bevel gear. A joint fossa fixedly arranged on the base is arranged on the lower portion of a bone joint. The artificial bone joint friction and abrasion test device can realistically simulate the movement conditions of the human joints and can provide accurate and reliable test data for the clinic application of different joint prosthesis materials.

Description

technical field [0001] The invention relates to the field of instrument science or bionic robot, in particular to an artificial bone joint friction and wear test device. Background technique [0002] Joint replacement surgery has a history of more than 100 years. At present, there are more than 500,000 cases of joint replacement surgery in the world every year. Joint replacement is mainly to implant biological medical materials or metal-based biomaterials into the human body to replace the original human organs to restore or realize the normal functions of the human body. Joint replacement is mainly the replacement of knee and hip joints. As a mature and classic orthopedic treatment technology, artificial total hip replacement has achieved great success in the treatment of hip joint diseases, but for young and middle-aged patients with femoral head necrosis , the incidence of complications after artificial joint replacement is high, and the long-term effect is not ideal. Ma...

AI Technical Summary

Problems solved by technology

In recent years, researchers have successively used pin-on-disk wear experiments, ring-disk wear experiments, four-ball wear experiments, etc., but due to structural limitations, the experimental equipment cannot conduct full-scale joint pair friction and wear tests, and the contact form of the test pieces is different from that of The working conditions of the actual joints are different, resulting in the inability to effectively simulate the motion mechanism of the human body shutdown

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