Processing method of scrap blood and apparatus

Abstract

The invention discloses a processing method and an equipment of blood which is discarded. Because of the specificity of the blood processing of a blood station, an ordinary disinfection cabinet cannot meet the disinfection requirement of the blood station, all along the blood station adopts the traditional disinfection way to disinfect, thus the dangers that the disinfection is incomplete, the environment is polluted, and the related personnel who contact with the blood is infected exist. The invention leads blood bags which are required to be processed and provided with pathogenic microorganisms to be arranged in the cabinet which is equipped with a quartz heating tube, an ultraviolet ray disinfection lamp and an ozone generator, under the conditions that the ozone concentration is more than 40 mg/l, and the 253.7 nm ultraviolet intensity radiated by the ultraviolet ray disinfection lamp is more than 140 microwatt/cm<2>, the blood bags are sterilized for 60 to 100 minutes under the temperature of 75 to 90 DEG C. The method not only can thoroughly kill the pathogenic microorganisms outside and inside the blood bags and lead the blood in the blood bags to be congealed into block shape, but also can ensure that the blood bags are not broken in the sterilization process, guarantee the healthy safety of the related personnel, and sever the propagation spread possibility of the contagious diseases through the blood which is discarded.

Description

Technical field: [0001] The invention relates to a treatment method for scrap blood, in particular to a pretreatment method and equipment for scrap blood before incineration. Background technique: [0002] The blood of the human body cannot be replaced by other substances so far, and blood transfusion has become an important measure for rescuing critically ill patients and treating certain diseases clinically. In the 1960s, due to the development of medical polymers, plastic bags for blood collection, preservation, processing and transfusion were successfully developed. So far, there are plastic bags of various bag shapes and different uses. Blood safety is a major problem facing clinical blood transfusion at present. People's understanding of blood transfusion-related diseases is deepening. In addition to the main AIDS, hepatitis, and syphilis, it is also confirmed that some other diseases can also be transmitted through blood transfusion. Incidents happen from time to tim...

AI Technical Summary

Problems solved by technology

The low-temperature ozone disinfection cabinet can kill various bacterial propagules. The disinfection temperature is generally below 60°C, but it is difficult to meet the disinfection requirements for the destruction of the surface antigen and spores of the hepatitis B virus on the surface of the object, and it cannot completely kill the positive blood. Pathogenic microorganisms

Far-infrared ray is a dry heat disinfection method, but the penetration of heat is poor, and it requires the temperature to be kept above 125 degrees for 15 minutes to achieve the purpose of disinfection, but the blood bag made of plastic cannot withstand such a high temperature

Ultraviolet rays have a good killing effect on microorganisms, but due to the poor penetration of ultraviolet rays, they can only be used for surface disinfection, and the disinfection effect on areas that cannot be directly irradiated in the cabinet cannot meet the requirements, and the suitable temperature range for ultraviolet disinfection is 20~ 40°C, if the temperature is too high or too low, it will affect the disinfection effect

[0004] Therefore, although there are disinfection cabinets on the market, they cannot meet the disinfection needs of blood banks. Blood banks have always adopted traditional disinfection methods.

There are two traditional disinfection methods. One is to cut the blood bag and add chemical disinfectant for disinfection and sterilization. When the blood bag is cut open, the blood positive for infectious diseases is easily splashed, causing infection of the staff, and the combination of the disinfectant and the blood is not sufficient. , Disinfection and sterilization are uneven, disinfection is not complete, and the blood and disinfectant after disinfection are directly discharged into the sewer, polluting the environment

One is to directly sterilize the blood bag at a temperature of 121 degrees and a pressure of 0.14 megapascal (Mpa) under high temperature and high pressure for 30-45 minutes, and then incinerate it. Due to the high temperature and strong pressure, the plastic bag will expand and burst. Blood splashes, pollutes the environment and disinfection facilities, and the staff may also be infected during the process

Moreover, plasma is generally difficult to coagulate. After the above-mentioned treatment, the plasma is still liquid. During the process of sending the blood bag to incineration, the garbage delivery personnel will accidentally break the blood bag, and the blood will flow out to pollute the environment and the garbage delivery personnel. Therefore, the treatment of blood containing pathogenic microorganisms has always been a difficulty and focus of the work of the blood station, and careless handling will cause great social impact

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