Bidirectional constant-current pulse driving system for electrical stimulation treatment

Abstract

The invention belongs to the field of medical systems, and specifically relates to a bidirectional constant-current pulse driving system for electrical stimulation treatment. Aiming at the problems that the existing supportable human body load range is narrow and the pulse width frequency cannot be precisely and finely adjusted in real time, the bidirectional constant-current pulse driving systemis provided. The bidirectional constant-current pulse driving system comprises an FPGA main body and a bidirectional constant-current pulse driving unit, wherein the FPGA main body is internally provided with a communication interface, a user parameter register, a control command transmission module, a pulse driving module, an analog-to-digital converter and a state monitoring module. By arrangingthe FPGA main body and the bidirectional constant-current pulse driving unit, the formation and transmission of a pulse current are quickly realized; meanwhile, under the joint action of an additionally-arranged high-voltage constant-current diode and a high-voltage MOS tube, the bidirectional constant-current pulse driving unit can support the current as high as 80 mA or even hundreds mA, ensurethe integrity of pulse signal waveforms, can support the human body impedance range as high as 0-2000 ohm, can adjust the pulse width to the nanosecond level in real time, precisely controls the pulse width and adjusts the pulse width in real time.

Description

technical field [0001] The medical system field of the present invention particularly relates to a bidirectional constant current pulse drive system for electrical stimulation therapy. Background technique [0002] Electrical stimulation therapy is a medical method. Electrical stimulation therapy is suitable for hysterical paralysis. Electrical stimulation therapy uses a certain intensity of pulse current to stimulate one or more groups of muscles through a pre-set program to induce muscle movement or simulate normal voluntary movement to achieve improvement or recovery. The purpose of stimulating the function of the muscle or muscle group. [0003] In the electrical stimulation therapy system applied to the human body, it is necessary to transmit electric pulses to the body load through the electrodes for treatment. The impedance of the human body will change during electrical stimulation. Experiments have proved that bidirectional constant current pulses can achieve bett...

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Problems solved by technology

[0004] The present invention proposes a bidirectional constant current pulse drive system for electrical stimulation therapy, which solves the problem that common electrical stimulation systems on the market have a small current, can support a narrow human body load range, and cannot accurately and finely adjust the pulse width and frequency in real time. The problem

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