Blood dialysis/filtration apparatus and implementation method thereof

Abstract

The invention discloses a blood dialysis / filtration apparatus and an implementation method thereof. The blood dialysis / filtration apparatus is composed of a constant-pressure equilibrium liquid supplyand return channel, a reverse-osmosis water inlet gas removal channel, a concentrated-solution liquid preparation channel, a dialysate static mixing channel and the like. The implementation method includes: realizing flow balance of fresh dialysate waste liquid driven by a motor; arranging a pressure regulator in the constant-pressure equilibrium liquid supply and return channel of the dialysatein and out of a dialyzer to adjust the pressure balance; under driving of the same motor, respectively designing and measuring the output of each cavity / revolution of a waste liquid pump, a dialysatepump and a concentrated liquid pump to achieve the standard dialysate electrolyte ion concentration and consistence of the inlet of the dialysate and the waste liquid, wherein due to the ratio of reverse osmosis water to a concentration solution based on the amount of each cavity / revolution, the electrolyte ion concentration of standard dialysate is achieved.

Description

technical field [0001] The invention relates to the technical field of blood purification, in particular to a hemodialysis / filtration device and a realization method thereof. Background technique [0002] Hemodialysis treatment system of the prior art (see Image 6 ) is usually composed of a blood circuit and a dialysate circuit. The intersection point of the two circuits is in the dialyzer. The blood is drawn out from the patient's body under the driving action of the dialyzer, and returns to the patient's body after passing through the blood chamber of the dialyzer to form a circulation circuit; Standard dialysate is introduced into the dialysate chamber of the dialyzer, and due to the isotonic material exchange between blood and dialysate in the dialyzer, the exchanged dialysate (also called waste) is drawn out of the dialyzer and returned to the dialysis unit Inside. At the same time, dialysis treatment mainly includes three purposes, the first is to extract the toxin ...

AI Technical Summary

Problems solved by technology

Therefore, we can see that the reverse osmosis water flow and the A / B concentrate flow are two relatively independent flow systems, there is no proportional relationship between the output volume of each cavity and the corresponding structure of the same driving source and synchronous drive, if the reverse osmosis water If the flow rate changes, the A / B concentrate flow rate needs to be recalculated, which will lead to large fluctuations in conductivity

The dialysate flow rate based on the balance chamber cannot be adjusted linearly. In addition, the existing dialysis equipment must be equipped with a degassing device, water system pressure control, and temperature control in addition to the above-mentioned complicated structural settings. And a large number of sensors such as conductance control to ensure the safe operation of the equipment

Therefore, the dialysis machine based on the principle of the balance chamber has disadvantages or deficiencies such as complex structure, high cost, frequent false alarms, difficult operation and high maintenance cost.

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