Novel artificial hip joint friction testing machine

Abstract

The invention discloses a novel artificial hip joint friction testing machine which comprises a loading mechanism, a torque tester, a ball head, an acetabular cup and a ball head rotating device, wherein the ball head rotating device comprises a rotating shaft I and a rotating shaft II; the rotating shaft I is arranged under the ball head by an upper bearing position and a lower bearing position of the shaft I which are arranged on a middle layer platform and a lower layer platform, respectively; the rotating shaft II is arranged beside the rotating shaft I along the inclined direction; the upper end of the rotating shaft II is connected with the ball head; the lower end of the rotating shaft II is arranged at a bearing position II on an inclined table; the inclined table is arranged on a rotary disc; the rotary disc coaxially sleeves the rotating shaft I in an empty way and is installed by a rotary disc bearing position at the middle layer platform; the rotating shaft I is connected with the rotating shaft II by a bevel gear and a cylindrical gear which are meshed with each other; the bevel gear is arranged on the rotating shaft I; the cylindrical gear is arranged on the rotating shaft II. The novel artificial hip joint friction testing machine is suitable for researching friction under complicated working conditions such as different ages, regions and motion states, and the result of an artificial hip joint friction performance test is further close to the real working condition.

Description

(1) Technical field: [0001] The invention relates to mechanical design and material friction research, in particular to a novel artificial hip joint friction testing machine, which can provide multi-working-condition and reliable testing for the friction performance testing of new materials. (two) background technology: [0002] According to statistics, the proportion of elderly people over 60 years old suffering from joint degenerative diseases is as high as 90%, among which hip fracture is one of the most important traumas. The Orthopedic Branch of the Chinese Medical Association has successively regarded "implant safety, wear resistance and durability" as one of the most important issues in this field. [0003] In view of the characteristics of complex, high risk, high cost and long cycle of artificial hip joint implantation in vivo test research, hip joint friction testing machine came into being. At present, the hip joint friction testing machine can be divided into: p...

AI Technical Summary

Problems solved by technology

On the basis of the rocker type hip joint testing machine, it integrates the pin-on-disc type function into the testing machine, so that the single testing machine has strong compatibility and improved functions, and is easy to disassemble and operate; but because the testing machine is in The design principle has not been improved. Although the test function has been added, it has not improved the effect of adjusting the structural parameters of the hip joint on its biotribological performance.

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