An infusion control circuit

Abstract

The invention is applicable to the medical field and provides an infusion control circuit. The main flow control module generates an abnormal instruction when detecting the abnormal information of the main stepping motor, and sends the abnormal instruction to the main control module; Generate a stop instruction when the abnormal instruction is sent, and forward the stop instruction to the auxiliary control module; when the auxiliary control module receives the stop instruction sent by the main control module, The module forwards the stop instruction; the auxiliary flow control module controls the auxiliary stepper motor to drive the auxiliary control valve to close through the auxiliary stepper motor when receiving the stop instruction forwarded by the auxiliary control module The infusion tube is used to stop the flow of the liquid in the infusion tube; stop the infusion; reduce potential safety hazards and avoid safety accidents.

Description

technical field [0001] The invention belongs to the medical field, in particular to an infusion control circuit. Background technique [0002] At present, when the medical staff uses drip technology to treat patients, they usually observe the dripping speed of the liquid in the Murphy's dropper with naked eyes, and artificially adjust the control valve on the infusion tube located at the lower end of the Murphy's dropper to increase or decrease the drop rate. The liquid flow rate of the infusion tube, and then adjust the liquid drop rate in the Murphy's dropper. [0003] Although, due to the inaccuracy of artificial adjustment, the prior art adopts a stepper motor and a control valve, the stepper motor drives the control valve, and the liquid flow through the infusion tube is adjusted by the control valve. If the stepper motor has an abnormal situation, such as the motor works in a short-circuit and over-current state, or fails to work in an open-circuit cut-off state, it w...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an infusion control circuit, aiming at solving the problem that in the prior art, a stepper motor and a control valve are used to adjust the liquid flow in the input pipe, which may easily bring safety hazards or even cause safety accidents when the motor works abnormally. The problem

Images