Hand action assisting device based on line driving

Abstract

The invention relates to the technical field of medical rehabilitation instruments, in particular to a hand action assisting device based on line driving. The device comprises a sensing unit, a driving unit, a driving line pipe and a hand exoskeleton. A control circuit board receives bioelectricity signals transmitted by the sensing unit, analyzes the bioelectricity signals and transmits instructions to the driver to enable a driver to generate driving force, and the driving force is transmitted to the hand exoskeleton through a self-locking mechanism and a transmission mechanism to control the hand exoskeleton to act. The hand exoskeleton is a flexible exoskeleton glove or a rigid-flexible exoskeleton glove, and a new transmission mechanism is designed, so that two actions of stretching and bending are realized by one motor, and the paying-off speed can be adjusted within a small range. A bidirectional self-locking mechanism is rotated to eliminate a self-locking return stroke gap, the safety and the reliability of the self-locking mechanism are greatly improved; The flexible exoskeleton glove and the rigid-flexible exoskeleton glove are selectively used, so that the glove is comfortable and light to wear, and the daily life requirements are met.

Description

technical field [0001] The invention relates to the technical field of medical rehabilitation equipment, in particular to a wire-driven hand motion assisting device. Background technique [0002] Damage to the brain from strokes and certain traumas often leads to hand dysfunction. In recent years, the research on hand motion assisting devices based on this kind of problem is also developing continuously. For the extension and bending drive device of the hand, there are two common ways: one is to use 5 motors to drive five fingers respectively, and each motor drives the extension and bending of the fingers; the other is to use 2 motors to drive respectively Extension and flexion of the fingers. The first way can achieve independent control of each finger, and the second way, the stretching and bending movements of all fingers are consistent, which is not flexible enough. [0003] Both methods have the following problems: [0004] (1) Power transmission and fingers are dri...

AI Technical Summary

Problems solved by technology

[0004] (1) Power transmission and fingers are driven through a rigid mechanical structure, which virtually increases the weight of the device, making it difficult for the patient's already convulsive and weak hands to wear it for a long time;

[0005] (2) It is impossible to adjust the adaptive bending and stretching rate ratio for different realization modes or different wearers;

[0006] (3) Planetary gears, differentials, or a combination of gears and pawls are usually used to achieve two-way self-locking. Such a two-way self-locking mechanism has a complex structure, high cost, and large size, making the hand movement auxiliary device The drive unit of the drive unit is getting bigger and bigger, more and more cumbersome;

[0007] (4) The self-locking mechanism will also produce a return gap when it is self-locking in the reverse direction, which may cause the object to loosen and fall after holding the object tightly, causing accidental injury;

Images