Principle of myoelectric prosthesis control

Principle of myoelectric prosthesis control

Principle of myoelectric prosthesis control

The pain caused by amputation, although we can not completely remove the pain for patients, but at least we can make up for their trauma through advanced science and technology, the US delsys myoelectric control upper limb prosthesis has now been widely used in the assembly of upper limb prosthesis The prosthetic limb has advanced control technology, excellent mechanical properties and a variety of sports forms, so that the function of the upper arm amputee is better restored.

What is the working principle of myoelectric prosthesis? Myoelectric upper limb prosthesis uses the bioelectricity generated by the residual limb as a signal input into the prosthesis, and is controlled by the electronic system to control the movement of the prosthetic hand. This prosthesis is called myoelectric control of the upper limb prosthesis.

So what is the myoelectric signal? How does it control the prosthesis? What is the difference between the myoelectric control prosthesis and other types of prosthesis?

We know that every movement of a person is the result of muscle contraction, while muscle contraction is controlled by the bioelectrical signals transmitted by the nervous system. The armature of the upper limb prosthesis is hidden by an electro-mechanical "kingdom". When the amputee installs the prosthesis and contracts the muscles of the residual limb according to his own will, the electrical signal generated is transmitted to the electrode through the skin, amplified by the electronic system, filtered, and after the electromyography mode is recognized, the control circuit Immediately start the micromotor in the prosthesis and drive the mechanical structure of the hand or wrist, elbow and shoulder joint to make the prosthesis move.

With the rapid development of science and technology, in order to overcome the inconvenience of traditional cable-controlled prostheses (mechanical traction of upper limb prostheses) with traction belts and locks, under the active efforts of technicians in biophysics, precision machines, automatic control, etc. The electrical signal control of the upper limb prosthesis has been successfully developed and has been widely used in the assembly of upper limb prostheses around the world.

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Principle of myoelectric prosthesis control

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