Constant voltage frequency conversion speed control instrument

Abstract

The invention discloses a constant voltage frequency conversion speed control instrument which comprises a controller, a frequency converter, a water pump and a pressure sensor. The frequency converter is electrically connected with a frequency conversion motor of the water pump, a pump outlet of the water pump is connected with an anal tube, the pressure sensor is disposed at the position of thepump outlet, the pressure sensor and the frequency converter are electrically connected with the controller, the pressure sensor feeds detection parameters back to the controller, the controller performs PID calculation on the detection parameters of the pressure sensor and pre-determined pressure, the controller transmits obtained control signals to the frequency converter, the frequency converter controls the rotating speed and torque of the frequency conversion motor according to the control signals, and outlet pressure of the water pump is equal to the predetermined pressure. According tothe constant voltage frequency conversion speed control instrument, the pressure of clysis fluid can be monitored and controlled in real time, the enterobrosis incidence rate is reduced, and the constant voltage frequency conversion speed control instrument is an ideal, simple and safe medical device for performing intussusception reduction.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a constant-voltage variable-frequency speed-regulating controller. Background technique [0002] Intussusception is one of the most common causes of acute abdomen in children, often occurring in children 6 months to 2 years old. Enema reduction therapy is an important non-surgical treatment for intussusception. The main principle of enema treatment is to push the abnormal position of the bowel to reset by increasing the pressure at the intussusception site. The major complication of this treatment is bowel perforation. The incidence of perforation is mainly related to the amount of pressure applied to the intussusception site, the length of time the pressure is applied, and the kinetic and physical characteristics of the applied enema substance. [0003] At present, enema therapy for intussusception mainly includes: barium enema, air enema and saline enema. The key ...

AI Technical Summary

Problems solved by technology

Traditional saline enema repositioning under ultrasonic monitoring uses the adjustment of the height of the enema barrel to adjust the water pressure. Although the above device can control the pressure of the enema liquid according to the height and flow rate, the peristalsis and reverse peristalsis of the intestinal tube during the enema process will also affect the pressure. , the device has the disadvantage of not being able to monitor and adjust the pressure of the enema liquid dynamically in real time, and cannot well control the amount of the enema liquid entering the intestine

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