Automatic fluid preparation system for blood purification and use method thereof

Abstract

The invention provides an automatic fluid preparation system for blood purification and a use method thereof. The system is provided with a fluid absorption pump, wherein concentrate is pumped by the fluid absorption pump from a concentrate vessel, is delivered to a liquid pipeline through a pipeline so as to mix with reverse osmosis water to form a mixed solution; the ion concentration of the mixed solution is detected by an ion concentration sensor, and is compared with a concentration target parameter value, if the concentration exceeds the standard, an alarm is given out, otherwise the rotating speed of the fluid absorption pump is regulated to control concentration pumping flow rate; and meanwhile, the rotating speed is compared with an alarm threshold value, an alarm is given out if the rotating speed is abnormal, otherwise, a liquid loop is detected in real time continuously. The invention has the advantages that the system has the function of ion concentration online detection and feedback control, can regulate the rotating speed of the fluid absorption pump in real time, effectively avoids safety risks of hemodialysis, avoids mechanical failures of a motor, and has high fluid preparation speed, accurate concentration proportion, high stability and high reliability.

Description

technical field [0001] The invention belongs to an automatic liquid preparation system for blood purification, and relates to a system for automatic preparation and safety monitoring of dialysate used in blood purification equipment and a use method thereof. Background technique [0002] During the blood purification process, the patient's blood flows out of the body and returns to the body through the extracorporeal circulation formed by the pipeline. This circulatory system mainly includes three parts: blood circuit, fluid circuit and monitoring system. The blood in the patient's body is drawn out of the body, enters the extracorporeal pipelines such as dialyzer or filter, and flows back into the human body after purification to form a blood system; in the fluid system, the dialysate with standard ion concentration enters the opposite side of the dialyzer and the dialyzer membrane The process of diffusion, convection, and ultrafiltration occurs in the patient's blood, and ...

AI Technical Summary

Problems solved by technology

In this process, a certain concentration error will be introduced in the concentrate preparation process in the first step due to human operation; in the second step, the speed and flow rate error of the metering suction pump, wear or mechanical failure will also cause the ions in the dialysate The concentration exceeds the standard, which will cause the alarm of the monitoring device, interrupt the treatment or even cause a safety accident

[0005] Therefore, the disadvantage of the traditional preparation method of dialysate for blood purification is that strict proportion preparation and precise electromechanical control are required to meet the treatment requirements, and once the concentration fluctuates, it will take a relatively long adjustment time to carry out normal treatment. Its stability, security and reliability are relatively poor

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