Displacement liquid flow matching device in continuous blood purification and flow matching method

Abstract

The invention discloses a displacement liquid flow matching device in continuous blood purification and a flow matching method. The displacement liquid flow matching device comprises a liquid mixer and at least two groups of draining devices, each group of draining devices comprises a transfusion pipe, a dripping pipe, a turbine, a shaft and a gear, wherein the upper end of the transfusion pipe is provided with a contact pin, and the lower end of the transfusion pipe is connected with the upper end of the dripping pipe; the worm and the gear are respectively arranged at the upper and lower ends of the shaft, the exterior cylindrical surface of the turbine is tangent to the inner wall of the dripping pipe, and the gears of the two dripping devices are externally engaged. According to the displacement liquid flow matching device provided by the invention, replacement base liquid can be extracted and mixed in real time in proportion, so as to achieve an aim of using the displacement liquid after the preparation, the standard batch production preparation can be carried out, the cost can be reduced, the problems of polluting in the clinically preparing process, inaccurately metering, even mistakenly metering and the like can be prevented, the internal quality of the displacement liquid can be ensured, the long-term storage and transportation can be conveniently realized, the blood purification and treatment can be beneficially and quickly developed, and the rescue time of severe patients can be shortened.

Description

technical field [0001] The invention relates to a medical device, in particular to a replacement fluid flow matching device and a flow matching method in continuous blood purification. Background technique [0002] Continuous blood purification refers to the continuous removal of water and solutes. It is a way to regulate the internal environment. It is an important progress in contemporary intensive care medicine and has developed into an important platform and means for organ support. While removing excess water and solutes in the body, it is necessary to supplement beneficial solutes and water reasonably. In blood purification, in order to replenish the removed water and lost solutes, the liquid used to replace the removed water and solutes can be configured according to the plasma composition, which is called a replacement solution. When configuring the replacement solution, attention should be paid to the pH value and various electrolyte concentrations. [0003] In bl...

AI Technical Summary

Problems solved by technology

The carbonate replacement solution is a replacement solution based on carbonic acid, which is most similar to the composition of human plasma. However, because the carbonate base can form water-insoluble precipitates with calcium and magnesium ions in the replacement solution, it not only changes the replacement solution Components, small precipitates can be deposited into the microcirculation, aggravating the patient's condition

In addition, carbonate can be decomposed to generate carbon dioxide, which makes the replacement fluid unstable and cannot be produced industrially. In order to overcome the above defects in clinical practice, ready-to-use or Y-type interfaces are used to connect separately. It takes at least half an hour to prepare and use immediately The above time significantly increases the time from clinical preparation to actual implementation, which is not conducive to early implementation of surgery for critically ill patients whose time is life

[0004] Most of the replacement solutions that can be produced industrially are lactate replacement solutions or citrate replacement solutions. Although these two replacement solutions have stable performance and can be stored for a long time, both of them need to be metabolized into carbonate in the liver. liver burden

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