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Extracorporeal multistage blood circulation purifying method

A technology for extracorporeal blood and circulation purification, applied in suction devices, dialysis systems, etc., can solve the problems of pollutant pollution, functional decline and inactivation of biological pollutants, and achieve the effect of preventing mutual infection and improving the safety factor.

Inactive Publication Date: 2007-03-21
THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV
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Problems solved by technology

[0005] Similarly, pathogenic microorganisms such as viruses often exist in the purified blood. For example, most patients with liver failure in my country are caused by hepatitis B. There are a large amount of hepatitis B virus in the blood, which may also lead to contamination of purified substances during treatment.
This pollution will lead to the decline or even inactivation of the function of biological pollutants, shortening the treatment time and increasing the treatment cost

Method used

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  • Extracorporeal multistage blood circulation purifying method

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Embodiment Construction

[0016] As shown in Figure 1, the patient's blood containing toxic substances is drawn out of the body, that is, the original blood enters the first dialyzer 1 of the first dialysis system through the pipeline system, and the original blood is drawn out after dialysis, and the blood is purified; this process Like conventional dialysis treatment, it is a continuous process and is constructed as an independent primary circulation, see liquid flow direction 5; the first dialyzer 1 is constructed by a semi-permeable membrane; blood flow is driven by a series of blood pumps; and pathogens Because the volume of microorganisms is significantly larger than the pore size of the semi-permeable membrane, they cannot pass through the semi-permeable membrane and enter the secondary cycle under normal conditions; however, due to the technical limitations of the semi-permeable membrane in the manufacturing process, or slight membrane rupture during use, it is still possible A very small amount...

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Abstract

The present invention relates to one kind of extracorporeal multistage blood circulating and purifying method. In the blood circulating and purifying apparatus with three dialysis systems comprising a circulating stage and a dialyzer each, small molecular weight toxic matter are eliminated one stage by one stage, and the small molecular weight active matter enters the blood. The present invention can avoid the cross infection caused by pathogenic microbe between the blood of the patient and the biological purifying equipment.

Description

technical field [0001] The invention relates to a blood purification method, in particular to a biological purification method of multistage blood circulation outside the body. Background technique [0002] With the development of material technology and bioengineering technology, blood purification therapy is more and more widely used clinically, and on the basis of previous mechanical artificial blood purification methods such as hemodialysis, plasma exchange, blood adsorption, etc. The artificial purification method of biological purification is to use living cells, tissues, organs or whole animals as the purification unit to purify the patient's blood. [0003] Prior to the present invention, biological purification treatment was currently mainly used in bioartificial liver treatment for patients with liver failure. Due to the variety and complexity of toxins in patients with liver failure, general mechanical blood purification methods are difficult to completely remove...

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Application Information

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IPC IPC(8): A61M1/14A61M1/00
Inventor 吴星宇李强方胜朱章华丁义涛
Owner THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV