Electromagnetic valve leak detection system for blood purification

Abstract

The invention discloses an electromagnetic valve leak detection system for blood purification, comprising a liquid circuit and a detection circuit, wherein the liquid circuit is provided an electromagnetic valve and a liquid circuit pipeline. The system is characterized in that the detection circuit is provided with a signal generation circuit, a signal acquisition circuit, a signal processing circuit, a first detection electrode and a second detection electrode. The system has the beneficial effects of high reliability, simple structure and convenient installation, can perform real-time online detection on the electromagnetic valve in blood purification equipment in the whole operation process, achieves discrimination in that whether leakage is generated or not by continuously detecting the liquid flowing condition of an inlet end and an outlet end of the electromagnetic valve, and accurately identifies whether connection and disconnection of the electromagnetic is reliable or not. Therefore, the system can completely avoid safety risk caused by electromagnetic valve leakage, and has obvious advantage of no leakage alarm.

Description

technical field [0001] The invention belongs to a blood purification detection device, in particular to a leakage detection system of an electromagnetic valve for blood purification in a blood purification liquid circuit. Background technique [0002] In the blood purification equipment, the patient's blood flows out of the body and is purified by the blood purification system and returns to the body. The blood purification equipment includes three parts: blood circuit, fluid circuit and monitoring system. The blood system is to lead the blood of the patient out of the body, enter the blood purification equipment, and then flow back to the patient; the fluid system is to achieve the purpose of treatment through the solution diffusion and ultrafiltration between the blood and the dialysate; the monitoring system is to purify the blood through Each parameter of the equipment is monitored. [0003] In order to maintain acid-base balance, curative effect and safety, dialysate p...

AI Technical Summary

Problems solved by technology

[0007] The disadvantage is that this method can only judge the failure of the solenoid valve coil or the drive circuit, and cannot detect the real situation of the valve body leakage.

[0009] The disadvantage is that this method can detect most leaks, but in practice, it cannot detect slow micro-leaks or occasional leaks in normal work, which may easily lead to potential safety hazards in treatment.

Images