An intermittent CRRT machine capacity balance device

Abstract

The invention discloses an intermittent CRRT (Continuous Renal Replacement Therapy) machine capacity balance device. The device comprises a blood circulation system, a first liquid circulation system, and a second liquid circulation system, wherein the blood circulation system consists of a hollow fiber dialyzer, a liquid outlet pipeline, a first circuit interrupting device, a liquid pump, a displacement liquid / dialysis liquid container and a liquid return pipeline; the second liquid circulation system consists of an exogenous displacement liquid / dialysis liquid container, an exogenous displacement liquid / dialysis liquid container liquid outlet pipeline, a second circuit interrupting device, a liquid pump, a displacement liquid / dialysis liquid container, and an exogenous displacement liquid / dialysis liquid container liquid return pipeline; the first liquid circulation system is in contact with the blood circulation system to perform substance exchange; since the volumes are fixed, volume change is not involved in the process of exchange; the first liquid circulation system is separated from the blood system, and is connected to the second liquid system to perform liquid exchange to be refilled with clean fresh displacement liquid, and then performs solute exchange with the blood system. The process is repeated to fulfill the aim of continuously removing solute.

Description

Technical field [0001] The invention relates to a continuous blood purification device, in particular to an intermittent CRRT machine capacity balance device. Background technique [0002] CRRT (ie continuous renal replacement therapy) is the abbreviation for continuous renal replacement therapy. Also known as CBP (continuous blood purification); bedside blood filtration. It uses 24 hours a day or close to 24 hours a long time, continuous extracorporeal blood purification therapy to replace impaired kidney function. [0003] In 1995, at the first international CRRT academic conference held in San Diego, USA, CRRT was officially defined as: all blood purification technologies that can continuously remove solutes and support organ functions. During the Second World War, Murray and Delmore of Canada successfully developed the first artificial kidney machine, which was used in the clinical treatment of renal failure in 1946, and blood purification technology has been developed rapidl...

AI Technical Summary

Problems solved by technology

[0007] Obviously, there are drawbacks in controlling the balance of incoming and outgoing liquids by dynamically measuring the weight of the liquid with a scale: first, the scale needs to be calibrated frequently, and the accuracy will gradually decrease during use; The collision of the scale will not work, so the existing CRRT machine cannot work in the mobile environment

However, it is difficult for the flowmeter to control the capacity balance error to be less than 1%.

[0010] Existing CRRT machines are not suitable for CRRT treatment in mobile vehicles such as airplanes, cars, trains, and ships, which brings challenges to the urgent need for CRRT treatment, but due to distance and transportation restrictions, CRRT treatment cannot be performed. For example, soldiers injured on the battlefield can only be transported back to the medical base for rescue and treatment, and critically ill patients cannot be rescued and treated in an ambulance

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