A bionic force loading and function detecting experimental platform for an in-vitro shoulder joint

Abstract

A bionic force loading and function detecting experimental platform for an in-vitro shoulder joint is provided. The platform includes a support unit, a base unit, a shoulder blade fixing and muscle loading unit, a humerus clamping and rotation measurement unit, a humerus movement guiding arc support and a humeral head displacement detection unit. The platform can provide different static space attitude fixation of shoulder joint specimens according to experiment requirements, and can perform glenohumeral joint three-freedom-degree and shoulder blade one-freedom-degree static phase adjustment through cooperation with a clamp. The muscle loading unit includes a plurality of force transferring ropes and a corresponding pneumatic servo system, and provides bionic muscle force for each muscle group of an in-vitro shoulder joint. Bionic muscle force is applied on a shoulder joint specimen under microprocessor control, multi-freedom-degree movement of the shoulder joint can be achieved, and shoulder joint function parameters are detected. Biomechanical data measured by the platform can be adopted as important indexes for shoulder joint function evaluation.

Description

technical field [0001] The invention belongs to the field of in vitro joint biomechanical experiments, in particular to an in vitro shoulder joint bionic force loading and an experimental platform for its function detection. Background technique [0002] The shoulder joint is the most flexible and kinematically complex joint in the human body, capable of flexion, extension, abduction, adduction, external rotation, internal rotation and circular multi-axis motion. Studies have shown that compared with the hip joint of the lower limbs, the shoulder joint has a greater range of motion but poorer stability. The shoulder joint is wrapped with a large number of muscles, which are important for maintaining the stability of the shoulder joint. A rotator cuff tear is a serious injury to the shoulder joint that causes instability of the joint capsule in the anteroposterior direction. Rotator cuff repair surgery can help improve the function of a damaged shoulder joint. The differen...

AI Technical Summary

Problems solved by technology

This invention is a bionic shoulder joint mechanism based on a parallel mechanism. Although it can complete the statics and dynamics simulation of the bionic shoulder joint mechanism, it is greatly simplified due to the huge difference between the mechanical structure of the bionic shoulder joint and the actual shoulder joint structure of the human body. The shoulder joint cannot be used for biomechanical experiments

Moreover, the functional simulation made by the experimental platform can only be used for stress and strain measurement, and the detection function is single.

In fact, so far, there is no domestic experimental platform capable of multi-parameter testing of shoulder joint function in human specimens in vitro

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