Artificial ankle joint friction-abrasion testing machine
A friction and wear test and ankle joint technology, which is applied in the direction of testing wear resistance, measuring devices, instruments, etc., can solve the problems of late start of ankle joint replacement, rarely seen friction and wear testing machines, etc., and achieves low cost and simple structure. , the effect of simple and convenient operation
Pending Publication Date: 2019-02-22
NANCHANG UNIV
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Problems solved by technology
However, ankle replacement started relatively late, and its friction and wear testing machine is rarely seen
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[0017] Below will be combined with the appended in the embodiment of the present invention figure 1 , clearly and completely describe the technical solutions in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] The invention discloses an artificial ankle joint friction and wear testing machine, comprising a machine frame including an artificial ankle joint head 5, the artificial ankle joint head 5 is arranged in a cavity of an ankle cup seat 6, and the ankle cup seat 6 is filled with lubricating oil, the upper end of the artificial ankle joint head 5 is clamped by the chuck 3, and rotates together with the chuck 3, the top of the chuck 3 is sequentially pro...
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The invention relates to an artificial ankle joint friction-abrasion testing machine. The machine comprises a rack and an artificial ankle joint head, wherein the artificial ankle joint head is arranged in the cavity of an ankle cup seat; the upper end of the artificial ankle joint head is clamped by a chuck; a pressure sensor and a hydraulic cylinder are sequentially arranged above the chuck frombottom to top; force is downward applied to the pressure sensor by the piston rod of the hydraulic cylinder; guide shafts are arranged at two ends of the ankle cup seat; the bottom of the ankle cup seat is driven by a crank-link mechanism to swing; and the upper end of the artificial ankle joint head is driven by a second crank-rocker mechanism to swing. The artificial ankle joint friction-abrasion testing machine has the advantages of simple structure, few parts and components, low cost and simplicity and convenience in operation, can be used for simulating the actual moving status of an ankle joint and realizing the abrasion state of an artificial ankle joint test-piece in related experiments.
Description
technical field [0001] The invention relates to a friction and wear testing machine for artificial joints, which is especially suitable for simulating the actual motion characteristics of artificial ankle joints and performing friction and wear tests on artificial joints. Background technique [0002] The ankle joint is the largest joint in the body that bears weight. Studies have shown that when a person walks normally, the load on the knee joint is 3 to 4 times the body weight, while the load on the ankle joint is 5.5 times the body weight. When running, the load on the ankle joint reaches 8 times the body weight, and when jumping high, its load is 14-16 times that of the human body. The main movement forms of the ankle joint are dorsiflexion and plantarflexion: the action of raising the toes to bring the dorsum of the foot closer to the front of the calf is called dorsiflexion, on the contrary, the action of straightening the toes and making the dorsum of the foot away f...
Claims
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Login to View More IPC IPC(8): G01N3/56
CPCG01N3/56G01N2203/005G01N2203/0048
Inventor 许文虎钟敏陈建锋李小兵陈炜
Owner NANCHANG UNIV