Central fluid supply system with self-cleaning function for hemodialysis and working method thereof

Abstract

The invention relates to a central fluid supply system with a self-cleaning function for hemodialysis and a working method thereof. The system comprises a fluid preparation device, a sterilization device, a fluid storage device and a transfusion pipe; the sterilization device comprises an ozone generator and a gas-liquid mixing pump, an outlet end of the fluid preparation device is communicated with an inlet end of the ozone generator through a pipeline, and an outlet end of the ozone generator is communicated with an inlet end of the gas-liquid mixing pump through a pipeline; an outlet end ofthe gas-liquid mixing pump is communicated with an inlet end of the fluid storage device, so that concentrated fluid in the fluid preparation device flows through a pipe, the ozone generator and thegas-liquid mixing pump and is mixed with ozone which is generated by the ozone generator; the outlet end of the fluid storage device is communicated with the transfusion pipe through the pipe, the outlet end of the gas-liquid mixing pump is connected with the inlet end of the fluid preparation device through a backflow pipe which can be turned on or turned off, and the transfusion pipe is connected with the output end of the fluid storage device through a backflow pipe which can be turned on or turned off.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a centralized liquid supply system for hemodialysis with a self-cleaning function and a working method thereof. Background technique [0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It drains the blood from the body to the outside of the body through a dialyzer composed of countless hollow fibers, and the blood and the electrolyte solution (dialysate) with a similar concentration to the body are exchanged through diffusion / convection inside and outside the hollow fibers , remove metabolic waste from the body, maintain electrolyte and acid-base balance; remove excess water from the body at the same time, and return the purified blood to the entire process called hemodialysis. [0003] During hemodialysis treatment, the hemodialysis machine dilutes A concentrated solution, B concentrated solution and ...

AI Technical Summary

Problems solved by technology

Among them, physical high-temperature disinfection is convenient, simple, and has no residue. However, after the temperature at the end of the infusion line is easily attenuated below 80°C, it will cause incomplete disinfection of the infusion system; prolonged use of high-temperature disinfection will cause accelerated aging of the infusion line. The dust on the inner wall of the infusion pipeline will fall off, which will threaten the safety of patients during dialysis; chemical disinfection mainly uses chemical preparations such as formalin and peracetic acid as disinfectants to disinfect the concentrated solution infusion pipeline, which is characterized by cumbersome, laborious, and Pollution of the environment, when the cleaning is not thorough, the residual disinfectant in the pipeline is mixed into the hemodialysis concentrate, which will also threaten the patient's dialysis safety

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