Pressure wave air bag instrument inflating and deflating control circuit

Abstract

The invention discloses a pressure wave air bag instrument inflating and deflating control circuit which comprises an air pump and a control circuit. The output end of the control circuit is connected with the air pump through a PID correcting circuit and a driving circuit in sequence. The air pump is connected with an air inlet port of an air bag, a pressure sensor is arranged on the air inlet port, and the pressure sensor is connected with the output end of the control circuit through a signal amplifying circuit. The pressure in the air bag is detected through the pressure sensor, and meanwhile feedback control is carried out, so that the pressure in the air bag is consistent with a control value, the overpressure condition is avoided, the treating effect is improved, and medical disputes are reduced.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a pressure wave airbag apparatus inflation and deflation control circuit. Background technique [0002] The air wave pressure therapy instrument mainly inflates and deflates the multi-cavity airbags in order to form a circulatory pressure on the limbs and tissues, and squeezes the limbs from the distal end to the proximal end of the limbs uniformly and orderly to promote blood and blood circulation. The flow of lymph and the effect of improving microcirculation can accelerate the return of limb tissue fluid, help prevent the formation of thrombus and limb edema, and can directly or indirectly treat many diseases related to blood lymphatic circulation. When the air bag of the air wave pressure therapy device presses the limbs, the pressure is too high and the patient is over-pressed, making the affected part turn red or blue. Over time, medical accidents are likely to occur, result...

AI Technical Summary

Problems solved by technology

When the air bag of the air wave pressure therapy instrument presses the limbs, the pressure is too high and the patient is over-pressed, making the affected area red or blue. Over time, medical accidents are likely to occur, resulting in medical disputes

The existing pressure wave airbag instrument directly controls the inflation status of the airbag. Sometimes there is an error between the pressure inside the airbag and the value set by the controller, which may easily cause overpressure or underpressure of the airbag and affect the therapeutic effect.

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