Joint support device based on compliant constant torque mechanism

Abstract

The invention discloses a joint support device based on a compliant constant torque mechanism, which comprises support units on both sides of a limb, the support units comprises upper and lower guardplates, a compliant guiding mechanism is disposed between the upper and lower guard plates, the compliant guiding mechanism comprises a flexible connecting compliant guiding beam and a rotating table,the lower end of the upper guard plate is fixedly connected with the compliant guiding beam, and the upper end of the lower guard plate is fixedly connected with the rotating table. The upper and lower guard plates are connected by providing the compliant guiding mechanism, and on the one hand, the upper and lower guard plates can be stably connected to fix the limbs at both ends of the joint; onthe other hand, the constant torque output can be realized without a sensor and an actuator, and the constant torque generated by the compliant guiding mechanism can increase the range and angle of the damaged joint, which can help the muscle recovery function of the damaged joint; in addition, the upper and lower guard plates have no friction at the movement side during relative movement, and the movement precision is high.

Description

technical field [0001] The invention relates to the technical field of medical devices, and specifically designs a joint support device based on a compliant constant moment mechanism. Background technique [0002] In the field of medical devices, joint support devices are mainly used for rehabilitation, healing and functional recovery of injured tissues. The general method of immobilizing the joint with a plaster board can provide a rigid surface for the damaged joint and prevent the joint from being dislocated due to the weight of the limb itself. However, some patients have flexion and stretch contractures of the muscles at the joints due to major injuries or undergone surgery at the knee joints, elbow joints, ankle joints, wrist joints, etc. In order to restore the function of the body joints, traditional plasterboard fixation The joint method is no longer applicable. [0003] In the prior art, a joint support that can provide a torsional moment to the body is usually u...

AI Technical Summary

Problems solved by technology

However, the above-mentioned joint support usually has the following problems: 1. High cost, complex structure, and large size; 2. When the spring shrinks, the force exerted by the spring gradually decreases

As a result, when using this joint support, the patient will feel uncomfortable due to the different torsional moments provided, and the rehabilitation effect is low; 3. The above-mentioned joint support has friction and impact at the kinematic pair, and the movement accuracy of the mechanism is low, which is not conducive to the overall processing

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