Centrifugal bag type blood component separator and gas interception method thereof in blood return process

Abstract

The invention belongs to the field of centrifugal bag type blood component separators, and particularly relates to a centrifugal bag type blood component separator. A gas interception part is mountedon a blood return pipeline; the gas interception part comprises a drip-funnel-shaped shell and a filter membrane assembled in the shell; a blood inlet is formed in the upper part of the shell; a bloodoutlet is formed in the lower part of the shell; and the gas interception part is vertically placed. A return filter in a traditional centrifugal bag type blood component separator and a bubble detector on a full-automatic blood component separator are replaced with the gas interception part, so that the structure is simplified, gas containing tiny bubbles can be intercepted, the risk of blood vessel air embolism is avoided, the effect of filtering blood clots and microparticles can be achieved, meanwhile the platelet collection efficiency can be improved, and the comfort level of a blood donor is improved. The invention further provides a gas interception method of the centrifugal bag type blood component separator in a blood return process. The gas interception method is mainly realizedby improving the structure of the centrifugal bag type blood component separator.

Description

technical field [0001] The invention relates to a centrifugal bag type blood component separator and its gas interception method in the blood returning process, belonging to the field of centrifugal bag type blood component separators. Background technique [0002] At present, the platelet collector widely used in domestic blood banks is the disposable centrifugal bag blood component separator produced by Fresenius. Since it entered China in 2006, due to the relatively high collection efficiency and purity, the consumption has increased year by year. , The annual consumption is more than one million sets. [0003] The centrifuge bag type blood component separator is used in conjunction with the automatic blood component separator. The blood is centrifugally separated by centrifugation, and the separated platelets are collected for clinical treatment. The main working process of the product is: blood collection (collection of platelets) ——Blood return (transfer part of the s...

AI Technical Summary

Problems solved by technology

[0006] 1. When the blood is centrifuged at high speed, because the blood itself dissolves some gas (oxygen, carbon dioxide, etc.), the gas will be separated from the blood under the action of centrifugal force, and a large number of tiny bubbles (less than 0.05mL) will be generated. Blood enters the human body, and when the total amount of air entering the human body is higher than 5mL, the blood vessels will have the risk of causing air embolism, which will cause harm to blood donors;

[0007] 2. When the air bubble detector fails during operation and cannot effectively detect air bubbles, it will also cause air bubbles to enter the human body and cause air embolism, which will cause harm to blood donors

[0010] At the same time, during operation, if the air bubble detector detects large air bubbles, it will alarm, start the exhaust program, and discharge the air bubbles into the blood bag, prolong the platelet collection time, reduce the collection efficiency, and reduce the comfort of blood donors. Alarming will also cause blood donors to panic. Even if the above factors are not considered, air bubbles with a diameter slightly smaller than 4.58mm enter the human body along the return blood vessel, which will intuitively cause blood donors to feel uncomfortable, which is not conducive to the recruitment of blood donors in the later stage

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