Solute clearing monitoring system and method of blood purification equipment

Abstract

The invention discloses a solute clearing monitoring system of blood purification equipment. The solute clearing monitoring system comprises a blood loop, a blood filter, a displacement liquid loop, a dialysate supply switching loop and a waste liquid discharging loop, wherein a first electric conducting detection device is connected in series between a second inlet of the blood filter and the dialysate supply switching loop; a second electric conducting detection device is connected in series between a second outlet of the blood filter and the dialysate supply switching loop. The invention also provides a solute clearing monitoring method of the blood purification equipment; the method comprises the following steps of (1) respectively detecting the electrical conductivity of the second inlet and the second outlet of the blood filter through the first electric conducting detection device and the second electric conducting detection device every other set time; (2) obtaining the clearing rate of dialyzate ions according to an expression; (3) calculating a urea clearing kinetic model. The system and the method have the advantages that the monitoring on the concentration of the cleared solute in real time can be realized; the concentration of concentrated electrolyte A and B does not need to be changed in the real-time monitoring process.

Description

technical field [0001] The invention relates to the technical field of blood purification, in particular to a solute removal monitoring system of blood purification equipment and a method thereof. Background technique [0002] Blood purification equipment is to pass the blood through the central part of a hollow fiber semi-permeable membrane that allows medium and small molecular substances to pass through, so that the prepared isotonic liquid (such as dialysate, replacement fluid, peritoneal dialysis fluid, balance fluid, etc.), Through the outside of the hollow fiber membrane, under the action of osmotic pressure and transmembrane pressure, a large amount of water and medium and small molecule toxins in the patient's body can be removed through the principles of mass, convection and ultrafiltration, and the balance of water, electrolyte and alkali-acid in the body can be maintained to achieve A therapeutic device for blood purification. The current blood purification equi...

AI Technical Summary

Problems solved by technology

In order to monitor the change of the conductivity, the concentration of the concentrated dialysate must be changed to monitor the change of the conductivity of the dialysate. This urea removal monitoring method requires changing the concentration of the dialysate, which will have an adverse effect on the therapeutic effect.

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