Liquid balancing system of blood purification device and application of liquid balancing system of blood purification device

Abstract

The invention provides a liquid balancing system of a blood purification device. The liquid balancing system comprises a dialysis replacement liquid passage, a waste liquid treatment passage, a metering device, an electric dialysis replacement liquid pump driving device, an electric waste liquid pump driving device and a balance control device. The invention further provides a method for controlling balance of liquid in the blood purification device. The liquid balancing system of the blood purification device and application of the liquid balancing system have the advantages that by the aid of an ultrasonic flow sensor, contact with dialysis replacement liquid is avoided, so that risks of cross infection are avoided; in addition, by combination of the ultrasonic flow sensor and a motor with a negative feedback circuit, operating speeds of pumps can be fed back and regulated in real time to realize accurate metering and safety treatment, and the liquid balancing system is capable of operating normally in various severe environmental conditions.

Description

technical field [0001] The invention belongs to the technical field of blood purification, and relates to a liquid balance system and application of a blood purification device, in particular to a liquid balance system and application of a portable continuous blood purification device. Background technique [0002] CRRT (continuous renal replacement therapy, continuous renal replacement therapy), also known as CBP (continue blood purification, bedside hemofiltration), is a long-term, continuous extracorporeal blood purification therapy that uses 24 hours a day or close to 24 hours to replace the recipient Techniques that impair renal function. The clinical application goals of CRRT are to remove excess water in the body, remove metabolic wastes and poisons in the body, correct water and electrolyte disorders, ensure nutritional support, promote the recovery of renal function, and remove various cytokines and inflammatory mediators. CRRT can realize dialysis / filtration, perf...

AI Technical Summary

Problems solved by technology

[0003] However, CRRT equipment still has defects: its volume is still relatively large and heavy, it is not easy to carry, and it cannot meet the needs of being portable with military operations

However, the way of balancing chamber will contact liquid, there is a risk of cross-infection, each patient must be disinfected after use, the steps are cumbersome and inefficient

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