Automatic vaporizer for ethylene oxide sterilizing agent
By designing an automatic vaporizer for ethylene oxide sterilizer, the inaccuracy and safety hazards in the manual administration of ethylene oxide sterilization cabinets have been solved, and automatic administration has been achieved, improving the sterilization efficiency and quality.
Patent Information
- Application Number
- CN202310960093.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-01
- Publication Date
- 2025-02-14
AI Technical Summary
The dosing of existing ethylene oxide sterilization cabinets requires manual operation, which poses problems such as inaccurate dosage, incomplete gasification and safety hazards.
Design an automatic vaporizer of ethylene oxide sterilizer, which is composed of components such as chemical storage tanks, heating belts, thermostats and protective covers, realizes automatic connection and control with the sterilization cabinet, and synchronizes the heating and gasification and drug administration process. .
The automatic drug administration of ethylene oxide sterilization cabinet is realized, which improves the sterilization efficiency and quality, ensures the safety and reliability of drug administration, and creates conditions for fully automatic control.
Smart Images
Figure CN119424705A_ABST
Abstract
Description
Technical Field
[0001] The present invention provides an ethylene oxide sterilant automatic vaporizer, in particular, it can realize the automatic dosing of the ethylene oxide sterilizer, and it is safe and reliable, thereby creating conditions for the full-automatic control of the ethylene oxide sterilizer. Background Art
[0002] Ethylene oxide is a broad-spectrum sterilant that can kill a variety of microorganisms. Moreover, it can penetrate the packaging of medical devices for sterilization and ensure the long-term sterility of sterilized items. Therefore, it is widely used for the sterilization of medical devices.
[0003] Ethylene oxide sterilization uses a dedicated ethylene oxide sterilizer. The sterilizer has large-scale general sterilization chambers with specifications ranging from 3 to 100 cubic meters, and small-scale ones with specifications ranging from several hundred to one thousand liters. Ethylene oxide cabinets are sterilized with ethylene oxide gas. The sterilization concentration is between 600mg / L and 800mg / L, the optimal sterilization temperature is around 54°C, the sterilization humidity is around 60%RH, the effective sterilization cycle time is around 4 to 12 hours, and the decomposition time is around 12 hours. Ethylene oxide sterilizers are generally stored in liquid cylinders, with a boiling point of 10.5°C at normal pressure, and they also absorb a lot of heat when vaporized. Therefore, ethylene oxide sterilizers, especially large and medium-sized sterilizers, need to have ethylene oxide gasification devices when sterilizing and dosing. The ethylene oxide liquid released from the cylinder is gasified and then enters the ethylene oxide sterilizer for sterilization. At present, the dosing of these large and medium-sized ethylene oxide sterilizers is done manually. When dosing, the dosage is determined by weighing the cylinder, and the cylinder valve is opened to allow the ethylene oxide liquid in the cylinder to slowly flow into the vaporizer. During this period, the flow of the ethylene oxide liquid needs to be manually controlled, because if the flow is large, incomplete gasification will cause the ethylene oxide liquid to flow into the sterilizer and contaminate the sterilized items. If the flow is small, the dosing time will be increased. At the same time, the changes in the cylinder weighing must be carefully observed to ensure the accurate dosage. If you are not careful, it will cause problems such as inaccurate dosage and poor gasification. In particular, if the dosing person forgets that he is dosing for other reasons, it will cause the dosing to be out of control and create safety hazards. Summary of the invention
[0004] In order to overcome the shortcomings of the current ethylene oxide sterilizers, especially large and medium-sized ethylene oxide sterilizers, which require manual dosing and cause a series of problems.
[0005] The present invention provides an ethylene oxide sterilant automatic vaporizer, which is characterized by:
[0006] 1. The heating and vaporization time of the vaporizer is synchronized with the sterilization dosing time, and the ethylene oxide sterilant capacity of the automatic vaporizer is the same as the sterilant usage of the corresponding sterilizer, which can realize automatic dosing of the sterilizer.
[0007] 2. The automatic vaporizer of ethylene oxide sterilizer is composed of a chemical storage tank, a chemical storage tank heating belt, a temperature controller, a protective cover and other components.
[0008] 3. The protective cover is designed as a drawbar box structure for easy transportation. At the same time, the protective cover is designed with a vaporizer parking column foot and a column foot groove corresponding to the column foot. During storage and stacking, the column foot of the automatic vaporizer above is just inserted into the column foot groove of the automatic vaporizer below, making it stable for stacking and convenient for storage and stacking to facilitate the storage and stacking of the automatic vaporizer.
[0009] The technical solution adopted by the present invention to solve its technical problem is:
[0010] First, the capacity of the ethylene oxide sterilizer automatic vaporizer is designed according to the specifications of the sterilizer, that is, the ethylene oxide sterilizer capacity of the ethylene oxide sterilizer automatic vaporizer is the same as the sterilizer usage of the corresponding sterilizer. For example, a 20 cubic meter sterilizer requires 14 kilograms of ethylene oxide sterilization dosage, so the volume of the ethylene oxide sterilizer automatic vaporizer designed to match is 18 liters, and the ethylene oxide safety capacity is 14 kilograms. The ethylene oxide sterilizer automatic vaporizer is composed of a pharmaceutical storage tank, a pharmaceutical storage tank heating belt, a temperature controller, a protective cover and other components. The protective cover is designed as a drawbar box structure for easy handling, and the protective cover is designed with a box parking column foot and a column foot groove corresponding to the column foot. When storing and stacking, the column foot of the upper automatic vaporizer is just inserted into the column foot groove of the lower automatic vaporizer, so that it can be stacked stably and convenient for storage and stacking. When in use, the ethylene oxide sterilant automatic vaporizer is placed vertically, and its medicine storage tank outlet valve is connected to the sterilizer dosing pipeline. The outlet valve has no straw and is above the ethylene oxide liquid level as a whole, so the ethylene oxide liquid cannot flow out of the valve, and only the gasified ethylene oxide can be released from the valve. When the ethylene oxide sterilant automatic vaporizer is connected to the sterilizer dosing pipeline, the access end of the sterilizer dosing pipeline is designed to be a nylon tube and connected to the joint that matches the medicine storage tank outlet valve. This is convenient, and the vaporizer is connected to the sterilizer dosing pipeline. The sterilizer dosing pipeline is controlled by a control valve at the inlet end of the sterilizer. Only when the control valve is opened during dosing can it be connected to the sterilizer. Therefore, after the ethylene oxide sterilant automatic vaporizer is connected to the sterilizer dosing pipeline, it is in a standby state and is controlled by the sterilizer program. The power supply of the heating belt of the medicine storage tank is synchronously controlled with the control valve of the dosing pipeline of the sterilizer, that is, when the sterilizer program reaches the dosing step, the power supply of the control valve of the dosing pipeline of the sterilizer is turned on, the control valve is opened, and the power supply of the heating belt of the medicine storage tank is turned on at the same time, and the heating belt is heated. At this time, the ethylene oxide agent begins to vaporize and is put into the sterilizer. The boiling point of ethylene oxide under normal pressure is 10.5℃, and the temperature of the automatic vaporizer is controlled by the thermostat within 50℃. Then, the ethylene oxide liquid agent in the automatic vaporizer of the ethylene oxide sterilizer is vaporized under the heating action of the heating belt of the storage tank, and is put into the sterilizer through the dosing pipeline of the sterilizer for sterilization. The appropriate dosing time is set to ensure that all the ethylene oxide in the automatic vaporizer is vaporized and put into the sterilizer, completing the automatic dosing process.
[0011] The beneficial effects of the present invention are:
[0012] The automatic dosing of the ethylene oxide sterilizer is realized, and it is safe and reliable. At the same time, the sterilization efficiency and sterilization quality are improved, and conditions are created for the full automatic control of the ethylene oxide sterilizer.
[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] AttachedFigure 1 It is the appearance diagram of the present invention; Figure 2 It is a cross-sectional view.
[0015] In the attached drawings, 1 is the vaporizer cover; 2 is the medicine storage tank; 3 is the medicine storage tank heating belt; 4 is the medicine storage tank valve; 5 is the pull rod; 6 is the column foot; 7 is the caster; 8 is the cover door; 9 is the handle; 10 is the temperature sensor; 11 is the temperature control instrument; 12 is the power socket; 13 is the column foot slot; 14 is the caster slot.
[0016] Specific implementation method: When the sterilization cabinet is loaded with sterilized items and ready for sterilization, the 4th medicine storage tank valve of the automatic vaporizer is connected to the medicine feeding pipeline of the ethane sterilizer. After the connection, open the 4th medicine storage tank outlet valve, and then, the 12th power socket of the automatic vaporizer of the ethylene oxide sterilizer is plugged into the power plug controlled by the medicine feeding signal of the sterilizer to complete the access preparation work of the automatic vaporizer of the ethylene oxide sterilizer. Go to the control room to start the sterilizer program, and begin to execute preheating and humidification, pumping and pressure maintenance and other procedures. After the above procedures are completed, the sterilizer enters the dosing program. At this time, the sterilizer control program will output a signal to control the control valve of the sterilization pipeline to open. At the same time, the sterilizer will output a signal to the power relay connected to the automatic vaporizer of the ethylene oxide sterilizer, and control it to turn on the power to heat the automatic vaporizer of the ethylene oxide sterilizer. As the heating belt of the 3 pharmaceutical storage tanks is heated, the medicine in the 2 pharmaceutical storage tanks will automatically vaporize and enter the sterilizer. By setting the appropriate dosing time, the ethylene oxide liquid in the 2 pharmaceutical storage tanks can be completely vaporized and put into the sterilizer, thus realizing the automatic dosing process of the ethylene oxide sterilizer.
[0017] In the attached figure, 11 is a temperature control instrument panel that can control the vaporization temperature of the automatic vaporizer of the ethylene oxide sterilizer to ensure safe vaporization and dosing; 13 column foot slots are inserted into the 6 column feet of the ethylene oxide sterilizer when the automatic vaporizer is stored and transported, and 14 caster slots are inserted into the 7 casters, so that the stacking is stable for easy storage and transportation. 1 is the vaporizer cover to protect the safety of the vaporizer. When in use, after opening the 4 outer cover door, you can see the 2 medicine storage tank and operate it; 9 handles are convenient for the operation and use of the automatic vaporizer; the design of 5 pull rods and 7 casters can make this vaporizer as easy to move as a trolley case.
Claims
1. An ethylene oxide sterilant automatic vaporizer is characterized by: The heating and vaporization time of the vaporizer is synchronized with the sterilization and dosing time, and the ethylene oxide sterilant capacity of the automatic vaporizer is the same as the sterilant usage of its corresponding sterilizer, so automatic dosing of the sterilizer can be realized.
2. An automatic vaporizer for ethylene oxide sterilizing agent, characterized in that the automatic vaporizer for ethylene oxide sterilizing agent is composed of a medicine storage tank, a medicine storage tank heating belt, a temperature controller, a protective outer cover and other components.
3. An ethylene oxide sterilant automatic vaporizer is characterized by: The protective cover is designed as a trolley box structure for easy transportation. At the same time, the protective cover is designed with a vaporizer parking column foot and a column foot groove corresponding to the column foot. During storage and stacking, the column foot of the automatic vaporizer above is just inserted into the column foot groove of the automatic vaporizer below, making it stable to stack and easy to store and stack to facilitate the storage and stacking of the automatic vaporizer.