Low-temperature steam formaldehyde sterilizer and sterilization method thereof

Abstract

The invention relates to a low-temperature steam formaldehyde sterilizer and a sterilization method thereof, in the pulsation stage and the sterilization stage, a formaldehyde solution is gasified into formaldehyde steam through an evaporator and then enters the sterilization chamber cabin, and instruments which are not resistant to high temperature are sterilized in a low-temperature and vacuum environment by utilizing the chemical property of a formaldehyde sterilizing agent. In the desorption stage, pure water is gasified into water vapor through an evaporator, and the water vapor enters the sterilization chamber cabin to replace residual formaldehyde. Meanwhile, the vacuum pump is used for vacuumizing, and the cabin body is in a whole-course negative pressure state in the sterilization process, so that formaldehyde gas cannot leak, and the safety of an operator is ensured. By adjusting a control process and a control flow, sterilization parameters are determined, so that articles are sterilized, the use limitation of traditional formaldehyde gas fumigation and high-concentration formaldehyde sterilization cabinets at present is solved, and the defects of other low-temperature sterilization modes such as hydrogen peroxide plasma sterilization and ethylene oxide sterilization are overcome; and the sterilization range of the low-temperature steam formaldehyde sterilizer is expanded, especially the sterilization of blind-end lumen instruments.

Description

technical field [0001] The invention belongs to the technical field of sterilization of medical instruments, in particular to a low-temperature steam formaldehyde sterilizer and a sterilization method thereof. Background technique [0002] For the sterilization of blind-end lumen instruments, it is mainly completed by ethylene oxide sterilization, but the turnover rate of ethylene oxide sterilized instruments is low, and the sterilization temperature of instruments must be strictly required. At present, the formaldehyde gas fumigation method and low-temperature steam formaldehyde sterilizer used in formaldehyde sterilizers have obvious disadvantages. First, the penetrating power is not strong, and it is impossible to completely sterilize the blind-end lumen of complex structures; second, high-concentration formaldehyde If the gas is not decomposed thoroughly, it will remain on the internal surface of the device, causing cross-infection of patients, and high concentrations of...

AI Technical Summary

Problems solved by technology

[0002] For the sterilization of blind-end lumen instruments, it is mainly completed by ethylene oxide sterilization, but the turnover rate of ethylene oxide sterilized instruments is low, and the sterilization temperature of instruments must be strictly required

At present, the formaldehyde gas fumigation method and low-temperature steam formaldehyde sterilizer used in formaldehyde sterilizers have obvious disadvantages. First, the penetrating power is not strong, and it is impossible to completely sterilize the blind-end lumen of complex structures; second, high-concentration formaldehyde If the gas is not thoroughly analyzed, it will remain on the internal surface of the device, causing cross-infection of patients, and high concentrations of formaldehyde are directly discharged into the environment, seriously affecting environmental safety

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