Chemical indicator card for monitoring high-pressure steam sterilization

Abstract

The invention discloses a chemical indicator card for monitoring high-pressure steam sterilization, and belongs to the technical field of sterilization effect monitoring, the chemical indicator card is composed of a Dutch white cardboard carrier and chemical indicator ink mixed by multiple chemicals, the carrier is 62 + / -2mm in length and 28 + / -2mm in width, and the appearance is smooth, neat and flat; the indicating ink realizes chemical discoloration controlled by steam humidity, temperature and time by adjusting the component proportion, the successful discoloration condition is sterilization at 134 DEG C for 18 minutes, the failure condition is sterilization at 132 DEG C for 16.92 minutes, and whether sterilization reaches the standard or not is judged according to the color change of the ink. The card is simple in structure and convenient to use, overcomes the defect of varieties of sterilization chemical indicators of enterprises, provides monitoring guarantee for prion sterilization, improves clinical sterilization monitoring accuracy and indication reliability, provides a basis for sterilization management science, and ensures thoroughness of sterilization.

Description

Technical Field

[0001] This invention relates to the field of sterilization effect monitoring technology, specifically a chemical indicator card for monitoring high-pressure steam sterilization. Background Technology

[0002] High-pressure steam sterilization is a primary means of preventing and controlling hospital-acquired infections. The National Health Commission of the People's Republic of China, in its "Disinfection Technical Specifications," requires the monitoring of the effectiveness of high-pressure steam sterilization. Monitoring methods include process monitoring, chemical monitoring, and biological monitoring. Placing a chemical indicator card for high-pressure steam sterilization inside the sterilization package is the most common and direct method for chemically monitoring the effectiveness of high-pressure steam sterilization. This method is simple to operate, flexible, convenient, highly sensitive, economical, and practical. It can directly reflect the sterilization effect and can serve as a precursor to biological monitoring, playing an informational role in the prevention and control of hospital-acquired infections.

[0003] The common method for chemical monitoring in pressure steam sterilization is to place a chemical indicator card in the middle of the package to be sterilized. After sterilization, the color change of the chemical indicator card is observed to determine whether the sterilization conditions have been met. Usually, if the indicator bar turns into a contrasting color or is darker than the contrasting color, it is qualified and the corresponding package can be used; otherwise, it is unqualified, the package has not met the sterilization conditions, and cannot be distributed for use.

[0004] Prions (such as the pathogen of mad cow disease) are highly resistant to conventional sterilization methods. Composed of folded proteins and lacking nucleic acids, they are typically not inactivated at 100°C and retain their infectivity even after treatment at high temperatures of 120-130°C for several hours. Effective inactivation of prions requires extreme conditions, such as high-pressure steam treatment at 134-138°C for more than 18 minutes. Existing indicator cards cannot meet the monitoring needs of such special sterilization conditions, and there is an urgent need for suitable chemical indicator cards to provide monitoring assurance for prion sterilization. Summary of the Invention

[0005] The purpose of this invention is to provide a chemical indicator card for monitoring high-pressure steam sterilization that is simple in structure and easy to use, adaptable to the monitoring requirements of high-pressure steam sterilization conditions for prion inactivation, and improve the accuracy and reliability of sterilization effect monitoring.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A chemical indicator card for monitoring high-pressure steam sterilization, comprising a carrier and chemical indicator ink; The carrier is Dutch white cardboard, and the chemical indicator ink is a mixture of various chemicals. Chemical indicator inks utilize the effects of steam humidity, temperature, and time on the reaction rate during chemical reactions. By adjusting the proportions of each component, they achieve controllable chemical changes in reaction time and temperature, resulting in noticeable color changes during pressure steam sterilization.

[0007] Furthermore, the dimensions of the carrier are 62±2mm in length and 28±2mm in width, and the appearance of the carrier meets the requirements of being smooth, clean, and flat.

[0008] Furthermore, the conditions for the indicator card to successfully change color are as follows: The sterilization time was 18 min at a pressure steam temperature of 134℃. The sterilization failure condition was a pressure steam temperature of 132℃ and a sterilization time of 16.92 min.

[0009] Furthermore, by observing the color change of the chemical indicator ink, it can be determined whether the item has undergone the required pressure steam sterilization treatment.

[0010] The beneficial effects of this invention are as follows: 1. It fills the relevant technological gap in my country and makes up for the lack of a series of sterilization chemical indicators for R&D and production enterprises; 2. It provides a solid basis for the scientific management of sterilization in my country, provides monitoring and protection for the sterilization of prions, and provides a safe, reliable, and convenient monitoring method for sterilization detection and control, thereby ensuring the thoroughness of prion sterilization treatment; 3. It has a simple structure and is easy to use. In clinical use in hospitals, it has a more accurate monitoring rate and a more reliable indication effect. It can intuitively reflect whether the high-pressure steam sterilization conditions are met. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the chemical indicator card for monitoring high-pressure steam sterilization according to the present invention. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0013] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0014] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0015] In the description of the embodiments of the present invention, "multiple" means at least two.

[0016] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0017] The present invention provides a chemical indicator card for monitoring high-pressure steam sterilization, which consists of a carrier 100 and a chemical indicator ink 200; The carrier 100 is made of Dutch white cardboard, with a length of 62±2mm and a width of 28±2mm, and its appearance meets the requirements of being smooth, clean and flat. The chemical indicator ink 200 is a mixture of various chemicals. Based on the influence of conditions such as steam humidity, temperature, and time on the reaction rate in a chemical reaction, the chemical indicator ink 200 achieves controllable chemical changes in reaction time and temperature by adjusting the proportions between the components of the indicator ink.

[0018] The successful color change condition of this indicator card is: pressure steam temperature of 134°C and sterilization time of 18 minutes; the failed color change condition is: pressure steam temperature of 132°C and sterilization time of 16.92 minutes. During the pressure steam sterilization process, the chemical indicator ink undergoes an obvious color change. Based on the color change situation, the staff can identify whether the items have been sterilized according to the requirements.

[0019] Next, in combination with specific structural parameters and usage scenarios, a chemical indicator card for monitoring high-pressure steam sterilization of the present invention will be further described in detail.

[0020] The chemical indicator card for monitoring high-pressure steam sterilization of the present invention consists of a carrier made of Dutch white cardboard and a chemical indicator ink made by mixing multiple components of chemical drugs. The carrier is processed into a specification with a length of 62 ± 2 mm and a width of 28 ± 2 mm, and it is ensured that the surface of the carrier is smooth, clean, and flat; multiple chemical drugs are mixed and formulated into chemical indicator ink according to a ratio. The formulation is based on the influence of steam humidity, temperature, and time on the reaction rate in a chemical reaction, so that the ink can achieve a chemical color change reaction controlled by time and temperature.

[0021] When in use, place this indicator card at the middle position of the package to be sterilized and perform high-pressure steam sterilization treatment. If the sterilization process reaches the conditions of 134°C and 18 minutes, the successful color change of the indicator card is qualified, indicating that the package has reached the sterilization conditions; if the sterilization process only reaches the conditions of 132°C and 16.92 minutes, the failed color change of the indicator card is unqualified, indicating that the package has not reached the sterilization conditions and cannot be released for use.

[0022] The above description of the present invention and its implementation manners is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A chemical indicator card for monitoring high-pressure steam sterilization, characterized in that, It consists of a carrier and chemical indicator ink; The carrier is Dutch white cardboard, and the chemical indicator ink is a mixture of various chemicals. Chemical indicator inks utilize the effects of steam humidity, temperature, and time on the reaction rate during chemical reactions. By adjusting the proportions of each component, they achieve controllable chemical changes in reaction time and temperature, resulting in noticeable color changes during pressure steam sterilization.

2. The chemical indicator card for monitoring high-pressure steam sterilization according to claim 1, characterized in that, The carrier has a length of 62±2mm and a width of 28±2mm, and its appearance meets the requirements of being smooth, clean, and flat.

3. The chemical indicator card for monitoring high-pressure steam sterilization according to claim 1, characterized in that, The conditions for the indicator card to successfully change color are as follows: The sterilization time was 18 min at a pressure steam temperature of 134℃. The sterilization failure condition was a pressure steam temperature of 132℃ and a sterilization time of 16.92 min.

4. The chemical indicator card for monitoring high-pressure steam sterilization according to claim 1, characterized in that, By observing the color change of chemical indicator ink, one can determine whether an item has undergone the required pressure steam sterilization treatment.

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