An electrical stimulation sensory feedback system for sensory feedback in prosthetic hands

Abstract

An electrical-stimulation perception feedback system for perception feedback of an artificial limb hand is designed based on an induced finger-feeling area of the skin of an amputation stump and comprises a pressure sensor module, a digital signal processing module and an electrical-stimulation module. The pressure sensor module acquires a pressure signal of the artificial limb hand and transfers the pressure signal to the digital signal processing module, the digital signal processing module processes the pressure signal and outputs a control signal to the electrical-stimulation module, the electrical-stimulation module performs real-time electrical stimulation according to the control signal and comprises an electrical stimulator and an electrode, and the electrode is arranged in the induced finger-feeling area of the skin of the amputation stump. The electrical-stimulation perception feedback system achieves perception feedback of artificial limb fingers and can stimulate the induced finger-feeling area of the corresponding part of an amputee in an electrical-stimulation feedback mode to produce real-time touch sense feedback.

Description

technical field [0001] The invention relates to the technical field of medical rehabilitation equipment, in particular to an electrical stimulation sensory feedback system for artificial limb hand sensory feedback. Background technique [0002] The loss of sensory function caused by amputation prevents amputees from completing many normal activities in life, seriously reducing their quality of life. Most of the various prosthetic products sold in the market are decorative functional prostheses, which are very limited in assisting the behavior of amputees. In recent years, some smart prosthetics with simple functions have appeared on the market. They mainly assist amputees to complete uncomplicated grasping and moving actions by collecting simple myoelectric signals, but they are powerless for a large number of refined actions in daily life. In artificial prosthesis research, the addition of feedback functions can not only reduce the difference between prosthetics and normal...

AI Technical Summary

Problems solved by technology

In recent years, some smart prosthetics with simple functions have appeared on the market. They mainly assist amputees to complete uncomplicated movements such as grasping and moving by collecting simple myoelectric signals, but they are powerless for a large number of refined movements in daily life.

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