Low-temperature formaldehyde sterilization indicator card and manufacturing method thereof

Abstract

The invention provides a low-temperature formaldehyde sterilization indicator card and a manufacturing method thereof. A test strip is coated with a hydrophilic and hydrophobic bidirectional film, sothat the low-temperature formaldehyde sterilization indicator card is not limited by a low-temperature and humid detection environment when the formaldehyde sterilization effect is detected; and the sterilization effect can also be displayed excellently and accurately.

Description

technical field [0001] The invention belongs to the field of biological sterilization indications, and in particular relates to a low-temperature formaldehyde sterilization indication card and a manufacturing method thereof. Background technique [0002] With the continuous development of medical science, more and more medical devices are made of materials that are not resistant to high temperatures, so the sterilization method cannot be high temperature and high pressure steam sterilization, but low temperature sterilization. There are many low-temperature sterilization methods, which are undergoing corresponding changes with the development of the times, from traditional chemical disinfectant immersion, fumigation and other methods to ethylene oxide (EO) sterilization, low-temperature steam formaldehyde sterilization (LTSF) and overheating. Hydrogen peroxide plasma (plasma) sterilization, etc. Among them, the principle of low-temperature formaldehyde sterilization (LT SF)...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are mainly three methods for measuring the effect of formaldehyde steam sterilization. Method one is a thermal thermoelectric coupling temperature recorder, and method two is a biochemical measurement method. Suitable for popularization; Method 2 is expensive and not suitable for widespread use; Method 3 is the chemical indicator card detection method. This method is more universal than the above two methods, but the chemical indicator card is used in low temperature and high humidity environments. Under this condition, water absorption will occur, resulting in abnormal color display of the indicator card, which will affect the final test result