Medical low-temperature steam hydrogen peroxide rapid sterilization device

Abstract

The utility model discloses a medical low-temperature steam hydrogen peroxide rapid sterilization device which comprises a sterilization cabin which is sealed in vacuum and has the temperature of 55-65 DEG C, a negative-pressure flash vaporization device, an analysis device, a waste gas high-temperature ion catalysis device, a vacuum pump and a controller, and the negative-pressure flash vaporization device comprises a cavity communicated with the sterilization cabin; the negative pressure flash vaporization device vaporizes a hydrogen peroxide solution with the concentration of 6%-8% in the cavity, and the vaporized hydrogen peroxide enters the sterilization cabin to sterilize the surgical instruments; the analysis device is used for analyzing hydrogen peroxide left on the surface of the surgical instrument in the sterilization cabin; and the waste gas high-temperature ion catalysis device decomposes residual hydrogen peroxide steam pumped out of the gas outlet from the sterilization cabin into water and oxygen. The medical low-temperature steam hydrogen peroxide rapid sterilization device provided by the utility model avoids hazardous chemical substance management, is safer to use, is friendly to human and environment, reduces corrosivity, and realizes real low-temperature rapid sterilization.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically to a medical low-temperature steam hydrogen peroxide rapid sterilization device. Background Art

[0002] Nowadays, various types of medical electronic endoscopes, interventional catheters and other expensive instruments are commonly used in medical clinics for disease inspection, diagnosis and surgical treatment. There are also active instruments with batteries and cables such as electric saws, electric drills, and high-frequency electric knives used in orthopedic surgery. They are all instruments that are not resistant to moisture and heat and cannot be sterilized using high-temperature steam sterilization equipment (sterilization temperature reaches 121℃~132℃). At present, for expensive instruments used in clinical surgery, the commonly used low-temperature sterilization equipment includes ethylene oxide sterilizers, hydrogen peroxide low-temperature plasma sterilizers, and medical low-temperature steam formaldehyde sterilizers. These sterilization equipment have their own characteristics, but there are also some problems:

[0003] (1) The sterilizers used are hazardous chemicals: For example, bottled ethylene oxide gas sterilizers used in ethylene oxide sterilizers and 58% hydrogen peroxide sterilizers used in hydrogen peroxide low-temperature plasma sterilizers are both flammable and explosive hazardous chemicals, and there are many restrictions on their production, transportation, storage and use. They cannot be transported over long distances, and both equipment manufacturers and hospital users need to go through relevant hazardous chemical management licensing procedures and undergo regular inspections, which greatly limits the popularization and application of such sterilizers.

[0004] (2) Carcinogenicity of sterilization ingredients: For example, bottled ethylene oxide gas sterilizers used in ethylene oxide sterilizers and formaldehyde ethanol mixed sterilizers used in medical low-temperature steam formaldehyde sterilizers are internationally recognized as Class I toxic carcinogens. Even if a variety of analytical treatment devices and methods are adopted to reduce the chemical residues after sterilization to a qualified range, there are still adverse effects on the health of medical operators and the surrounding environment. Moreover, once an equipment failure occurs and the sterilizer leaks, the impact on the surrounding environment will be very serious.

[0005] (3) Corrosiveness of high-difficulty sterilizing agents to instruments: For example, the 58% hydrogen peroxide sterilizing agent used in hydrogen peroxide low-temperature plasma sterilizers has a purification device added during the sterilization process to improve the sterilization effect, so that the concentration of hydrogen peroxide entering the sterilization chamber is purified from 58% to more than 90%. Although the excessively high concentration of hydrogen peroxide gas improves the sterilization performance, it also increases the corrosiveness to the surface of surgical instruments, especially expensive instruments such as electronic endoscopes, which affects the service life of the instruments;

[0006] (4) Low-temperature sterilization takes a long time: For example, the sterilization temperature of an ethylene oxide sterilizer is between 65°C and 75°C, but the sterilization and subsequent decomposition and removal of residues takes a long time, often requiring 16 to 24 hours. The sterilization temperature of a medical low-temperature steam formaldehyde sterilizer is 60°C and 78°C, and the sterilization and decomposition time is generally 3 to 4 hours, so that hospitals can only sterilize 1 to 2 times a day, and the equipment utilization rate is low, which cannot meet the requirements for rapid sterilization of surgical instruments during clinical operation. Utility Model Content

[0007] In view of this, the purpose of the utility model is to propose a medical low-temperature steam hydrogen peroxide rapid sterilization device to avoid hazardous chemical management, be safer to use, be friendly to people and the environment, reduce corrosiveness, and achieve true low-temperature rapid sterilization.

[0008] Based on the above purpose, the utility model provides a medical low-temperature steam hydrogen peroxide rapid sterilization device, including a vacuum-sealed sterilization chamber with a temperature of 55°C to 65°C, a negative pressure flash steaming device, an analysis device, a waste gas high-temperature ion catalytic device, a vacuum pump, and a controller, wherein: the sterilization chamber includes a pressure-resistant door for taking and placing surgical instruments; the vacuum pump includes an air suction port and an air outlet, the air suction port is connected to the sterilization chamber, and the air outlet is connected to the waste gas high-temperature ion catalytic device; the negative pressure flash steaming device includes a cavity, the cavity is connected to the sterilization chamber, and an electric The negative pressure flash vaporization device vaporizes the hydrogen peroxide solution with a concentration of 6% to 8% in the cavity, and the vaporized hydrogen peroxide enters the sterilization chamber to sterilize the surgical instrument; the analysis device is connected to the sterilization chamber and is used to analyze the hydrogen peroxide remaining on the surface of the surgical instrument; the waste gas high-temperature ion catalytic device decomposes the residual hydrogen peroxide vapor in the sterilization chamber extracted from the air outlet into water and oxygen; the controller is communicatively connected with the vacuum pump, the negative pressure flash vaporization device, the analysis device, and the waste gas high-temperature ion catalytic device.

[0009] Optionally, an electric heating plate and a heat-insulating material are provided on the side wall of the outer surface of the sterilization chamber, the electric heating plate is used to heat the sterilization chamber, and the heat-insulating material is used to keep the sterilization chamber warm.

[0010] Optionally, a first temperature sensor, a pressure sensor and a hydrogen peroxide concentration sensor are installed on the top of the sterilization chamber, and the first temperature sensor, the pressure sensor and the hydrogen peroxide concentration sensor are all communicatively connected to the controller.

[0011] Optionally, the negative pressure flash vaporization device also includes a thick metal plate, a second temperature sensor, a liquid adding tube, a first solenoid valve, a first dosator, and a sterilant liquid storage box. The thick metal plate and the second temperature sensor are both located in the cavity, and the thick metal plate is installed on two side walls opposite to each other in the cavity. The electric heater and the second temperature sensor are both installed on the thick metal plate. The liquid adding tube includes a first end and a second end that are connected to each other. The first end extends into the cavity, and the second end is connected to the first solenoid valve. The first dosator is connected and installed between the first solenoid valve and the sterilant liquid storage box. The electric heater, the second temperature sensor, and the first solenoid valve are all communicatively connected to the controller.

[0012] Optionally, the analysis device includes an oxygen generator, a superoxide generator, a second solenoid valve, a third solenoid valve, a second dosator, and an analysis liquid storage box. The heating tube also includes a third end connected to both the first end and the second end. The second solenoid valve is connected to the sterilization chamber. The superoxide generator is connected and installed between the second solenoid valve and the oxygen generator. The third end is connected to the third solenoid valve. The second dosator is connected and installed between the third solenoid valve and the analysis liquid storage box. The second solenoid valve and the third solenoid valve are both communicatively connected to the controller.

[0013] Optionally, the exhaust gas high-temperature ion catalytic device includes a high-temperature heater and a nickel-platinum ion catalyst, the gas outlet is connected to the inlet of the high-temperature heater, the outlet of the high-temperature heater is connected to the inlet of the nickel-platinum ion catalyst, the outlet of the nickel-platinum ion catalyst is connected to the atmosphere, the nickel-platinum ion catalyst is used to decompose the high-temperature heated hydrogen peroxide exhaust gas into water and oxygen, and the high-temperature heater is communicatively connected to the controller.

[0014] Optionally, the nickel-platinum ion catalyst includes a shell and a filter element containing nickel-platinum ions installed in the shell, and the high-temperature heated hydrogen peroxide waste gas is filtered by the filter element and decomposed into water and oxygen.

[0015] Optionally, the high temperature heater is a pipeline electric heater.

[0016] Optionally, it also includes a fourth solenoid valve, an air filter and a three-way joint, the three-way joint includes a first interface, a second interface and a third interface, the first interface is connected to the sterilization chamber, the second interface is connected to the second solenoid valve, the third interface is connected to the fourth solenoid valve, the air filter is connected to the fourth solenoid valve, and the fourth solenoid valve is communicatively connected to the controller.

[0017] Optionally, a fifth solenoid valve is further included, which is installed between the air extraction port and the sterilization chamber, the fifth solenoid valve is connected to the sterilization chamber, and the controller is in communication with the fifth solenoid valve.

[0018] The utility model provides a medical low-temperature steam hydrogen peroxide rapid sterilization device, comprising a vacuum-sealed sterilization cabin with a temperature of 55°C to 65°C, a negative pressure flash steaming device, an analysis device, an exhaust gas high-temperature ion catalysis device, a vacuum pump, and a controller. First, the pressure-resistant door is opened, surgical instruments are placed in the sterilization cabin, and the vacuum pump is turned on. When the negative pressures of the cavities in the sterilization cabin and the negative pressure flash steaming device both reach 50Pa to 100Pa, the vacuum pump is turned off, and the electric heater heats the temperature in the cavity to 120°C to 150°C, so that the hydrogen peroxide liquid with a concentration of 6% to 8% in the cavity 9 is flash-evaporated under the conditions of a negative pressure of 50Pa to 100Pa and 120°C to 150°C, forming saturated hydrogen peroxide vapor and rapidly filling it into the sterilization cabin to sterilize the surgical instruments; then, the vacuum pump is turned on. , repeat the above operation to form a sterilization mode of repeated pulsating vacuuming and vaporizing the hydrogen peroxide sterilant and filling it into the sterilization chamber for 2 to 10 times; finally, turn on the vacuum pump to draw the hydrogen peroxide vapor filled in the sterilization chamber into the waste gas high-temperature ion catalytic device, and decompose the hydrogen peroxide vapor drawn out of the sterilization chamber into water and oxygen. When the negative pressure in the sterilization chamber reaches 100Pa to 800Pa, turn off the vacuum pump, turn on the analysis device, and analyze the hydrogen peroxide remaining on the surface of the surgical instrument. The waste gas high-temperature ion catalytic device and the analysis device work together to quickly decompose the hydrogen peroxide sterilant remaining in the sterilization chamber and on the surface of the surgical instrument; then flush sterile air into the sterilization chamber to equalize the pressure between the sterilization chamber and the outside world, open the pressure-resistant door, take out the sterilized surgical instruments, and complete the entire sterilization process. The medical low-temperature steam hydrogen peroxide rapid sterilization device provided by the utility model adopts a low-concentration hydrogen peroxide sterilant of 6% to 8%, thereby avoiding the management of hazardous chemicals and being safer to use. The low-concentration hydrogen peroxide sterilant of 6% to 8% is adopted, and the sterilization process is completed in a vacuum-sealed sterilization chamber under low temperature conditions. The hydrogen peroxide gas will not overflow during the sterilization process, and the residual hydrogen peroxide sterilizer after sterilization is rapidly decomposed into water and oxygen through the combined analysis of the exhaust gas high-temperature ion catalytic device and the analysis device, which is friendly to people and the environment. In the vacuum-sealed sterilization chamber, the low-concentration hydrogen peroxide is flash-evaporated to form low-temperature saturated steam, and its penetration is improved, and the sterilization performance is also improved accordingly. Sterilization is carried out at a low temperature of 55°C to 65°C, and the whole sterilization process is completed within 40 to 60 minutes, and the corrosiveness is reduced, thereby achieving true low-temperature rapid sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of the present invention, wherein:

[0020] Figure 1 This is a schematic structural diagram of a medical low-temperature steam hydrogen peroxide rapid sterilization device according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic structural diagram of a medical low-temperature steam hydrogen peroxide rapid sterilization device in one embodiment of the utility model, in which a thick metal plate, an electric heater, a second temperature sensor, and a liquid adding tube are installed in a cavity.

[0022] Description of reference numerals:

[0023] 1: Sterilization chamber; 2: Negative pressure flash steam vaporization device; 3: Analysis device; 4: Exhaust high temperature ion catalytic device; 5: Vacuum pump; 6: Pressure-resistant door; 7: Air extraction port; 8: Air outlet; 9: Cavity; 10: Electric heater; 11: Electric heating plate; 12: First temperature sensor; 13: Pressure sensor; 14: Hydrogen peroxide concentration sensor; 15: Metal thick plate; 16: Second temperature sensor; 17: Liquid adding pipe; 18: First solenoid valve; 19: First dosing device; 20: Sterilant storage box; 21: First end; 22: Second end; 23: Third end; 24: Oxygen generator; 25: Superoxide generator; 26: Second solenoid valve; 27: Third solenoid valve; 28: Second dosing device; 29: Analysis storage box; 30: High temperature heater; 31: Nickel-platinum ion catalyst; 32: Fourth solenoid valve; 33: Air filter; 34: Three-way connector; 35: Fifth solenoid valve. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the embodiments. The same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] like Figure 1 and Figure 2As shown, the medical low-temperature steam hydrogen peroxide rapid sterilization device provided by the utility model comprises a vacuum-sealed sterilization cabin 1 with a temperature of 55°C to 65°C, a negative pressure flash steaming device 2, an analysis device 3, an exhaust gas high-temperature ion catalytic device 4, a vacuum pump 5, and a controller, wherein: the sterilization cabin 1 comprises a pressure-resistant door 6 for taking and placing surgical instruments; the vacuum pump 5 comprises an air suction port 7 and an air outlet 8, the air suction port 7 is connected to the sterilization cabin 1, and the air outlet 8 is connected to the exhaust gas high-temperature ion catalytic device 4; the negative pressure flash steaming device 2 comprises a cavity 9, the cavity 9 is connected to the sterilization cabin 1, and the cavity 9 An electric heater 10 is arranged inside, and the negative pressure flash steaming device 2 vaporizes the hydrogen peroxide solution with a concentration of 6% to 8% in the cavity 9, and the vaporized hydrogen peroxide enters the sterilization chamber 1 to sterilize the surgical instruments; the analysis device 3 is connected to the sterilization chamber 1, and is used to analyze the hydrogen peroxide remaining on the surface of the surgical instruments; the waste gas high-temperature ion catalytic device 4 decomposes the residual hydrogen peroxide vapor in the sterilization chamber 1 drawn out from the air outlet 8 into water and oxygen; the controller is communicatively connected with the vacuum pump 5, the negative pressure flash steaming device 2, the analysis device 3, and the waste gas high-temperature ion catalytic device 4.

[0026] It should be noted that surgical instruments can be placed on the shelves in the sterilization chamber 1 .

[0027] The utility model provides a medical low-temperature steam hydrogen peroxide rapid sterilization device, comprising a vacuum-sealed sterilization cabin 1 with a temperature of 55°C to 65°C, a negative pressure flash steaming device 2, an analysis device 3, an exhaust gas high-temperature ion catalytic device 4, a vacuum pump 5, and a controller. First, a pressure-resistant door 6 is opened, surgical instruments are placed in the sterilization cabin 1, and the vacuum pump 5 is turned on. When the negative pressures of the cavities 9 in the sterilization cabin 1 and the negative pressure flash steaming device 2 both reach 50Pa to 100Pa, the vacuum pump 5 is turned off, and an electric heater 10 heats the temperature in the cavity 9 to 120°C to 150°C, so that the hydrogen peroxide liquid with a concentration of 6% to 8% in the cavity 9 is flash-evaporated under the conditions of a negative pressure of 50Pa to 100Pa and 120°C to 150°C, forming saturated hydrogen peroxide vapor and rapidly filling it into the sterilization cabin 1 to sterilize the surgical instruments. Then, the vacuum is turned on. Pump 5, repeat the above operation, form 2 to 10 times of repeated pulsating vacuum and sterilization mode of vaporizing hydrogen peroxide sterilant and filling it into the sterilization chamber 1; finally, turn on the vacuum pump 5, draw the hydrogen peroxide vapor filled in the sterilization chamber 1 into the waste gas high-temperature ion catalytic device 4, and decompose the hydrogen peroxide vapor drawn out from the sterilization chamber 1 into water and oxygen. When the negative pressure in the sterilization chamber 1 reaches 100Pa to 800Pa, turn off the vacuum pump 5, turn on the analysis device 3, and analyze the hydrogen peroxide remaining on the surface of the surgical instrument. The waste gas high-temperature ion catalytic device 4 and the analysis device 3 work together to quickly decompose the hydrogen peroxide sterilant remaining in the sterilization chamber 1 and on the surface of the surgical instrument; then flush sterile air into the sterilization chamber 1 to make the sterilization chamber 1 equal to the outside pressure, open the pressure-resistant door 6, take out the sterilized surgical instrument, and complete the entire sterilization process. The medical low-temperature steam hydrogen peroxide rapid sterilization device provided by the utility model adopts a low-concentration hydrogen peroxide sterilant of 6% to 8%, thereby avoiding the management of hazardous chemicals and being safer to use. The low-concentration hydrogen peroxide sterilant of 6% to 8% is adopted, and the entire sterilization process is completed in a vacuum-sealed sterilization chamber 1 under low temperature conditions. The hydrogen peroxide gas will not overflow during the sterilization process, and the residual hydrogen peroxide sterilizer after sterilization is rapidly decomposed into water and oxygen through the combined analysis of the exhaust gas high-temperature ion catalytic device 4 and the analysis device 3, which is friendly to people and the environment. In the vacuum-sealed sterilization chamber 1, the low-concentration hydrogen peroxide is flash-evaporated to form low-temperature saturated steam, and its penetration is improved, and the sterilization performance is also improved accordingly. Sterilization is carried out at a low temperature of 55° C. to 65° C., and the entire sterilization process is completed within 40 to 60 minutes, and the corrosiveness is reduced, thereby achieving true low-temperature rapid sterilization.

[0028] like Figure 1As shown, an electric heating plate 11 and a heat-insulating material are provided on the side wall of the outer surface of the sterilization chamber 1. The electric heating plate 11 is used to heat the sterilization chamber 1, and the heat-insulating material is used to keep the sterilization chamber 1 warm. In this embodiment, the electric heating plate 11 and the heat-insulating material can keep the temperature in the sterilization chamber 1 at 55°C to 65°C, thereby improving the convenience of use of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0029] like Figure 1 As shown, a first temperature sensor 12, a pressure sensor 13 and a hydrogen peroxide concentration sensor 14 are installed on the top of the sterilization chamber 1, and the first temperature sensor 12, the pressure sensor 13 and the hydrogen peroxide concentration sensor 14 are all connected to the controller for communication. In this embodiment, the first temperature sensor 12, the pressure sensor 13 and the hydrogen peroxide concentration sensor 14 can monitor the temperature, pressure and hydrogen peroxide concentration in the sterilization chamber 1, thereby improving the convenience of use of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0030] like Figure 1 and Figure 2 As shown, the negative pressure flash vaporization device 2 also includes a metal thick plate 15, a second temperature sensor 16, a liquid adding pipe 17, a first solenoid valve 18, a first dosing device 19, and a sterilant liquid storage box 20. The metal thick plate 15 and the second temperature sensor 16 are both located in the cavity 9. The metal thick plate 15 is installed on two side walls opposite to each other in the cavity 9. The electric heater 10 and the second temperature sensor 16 are both installed on the metal thick plate 15. The liquid adding pipe 17 includes a first end 21 and a second end 22 that are connected. The first end 21 extends into the cavity 9, and the second end 22 is connected to the first solenoid valve 18. The first dosing device 19 is connected and installed between the first solenoid valve 18 and the sterilant liquid storage box 20. The electric heater 10, the second temperature sensor 16, and the first solenoid valve 18 are all connected to the controller. Specifically, the electric heater 10 and the second temperature sensor 16 can be installed in the middle of the metal thick plate 15. In this embodiment, when the negative pressure and temperature in the negative pressure flash steam vaporization device 2 and the sterilization chamber 1 reach the set values, when the first solenoid valve 18 is opened, the first metering device 19 can deliver the hydrogen peroxide solution from the sterilizer storage box 20 into the cavity 9 in a timely and quantitative manner, and after forming saturated steam, it diffuses into the sterilization chamber 1 to sterilize the surgical instruments, thereby improving the ease of use of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0031] like Figure 1As shown, the analysis device 3 includes an oxygen generator 24, a superoxide generator 25, a second solenoid valve 26, a third solenoid valve 27, a second dosator 28, and an analysis liquid storage box 29. The heating tube also includes a third end 23 connected to the first end 21 and the second end 22. The second solenoid valve 26 is connected to the sterilization chamber 1, the superoxide generator 25 is connected and installed between the second solenoid valve 26 and the oxygen generator 24, the third end 23 is connected to the third solenoid valve 27, the second dosator 28 is connected and installed between the third solenoid valve 27 and the analysis liquid storage box 29, and the second solenoid valve 26 and the third solenoid valve 27 are both connected to the controller for communication. In this embodiment, specifically, a 20% alcohol aqueous solution can be used as an analytical agent and stored in the analytical liquid storage box 29. After the sterilization of the surgical instrument is completed, the second solenoid valve 26 and the third solenoid valve 27 are opened to flush the superoxide gas and the vaporized analytical liquid into the sterilization chamber 1 respectively, and the hydrogen peroxide sterilant remaining in the sterilization chamber 1 and on the surface of the surgical instrument is quickly analyzed, thereby improving the safety of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0032] like Figure 1 As shown, the waste gas high temperature ion catalytic device 4 includes a high temperature heater 30 and a nickel platinum ion catalyst 31, the gas outlet 8 is connected to the inlet of the high temperature heater 30, the outlet of the high temperature heater 30 is connected to the inlet of the nickel platinum ion catalyst 31, the outlet of the nickel platinum ion catalyst 31 is connected to the atmosphere, the nickel platinum ion catalyst 31 is used to decompose the high temperature heated hydrogen peroxide waste gas into water and oxygen, and the high temperature heater 30 is connected to the controller for communication. In this embodiment, the vacuum pump 5 draws the hydrogen peroxide waste gas in the sterilization chamber 1 into the nickel platinum ion catalyst 31, and the nickel platinum ion catalyst 31 decomposes the hydrogen peroxide into water and oxygen, thereby achieving the purpose of health and environmental protection, and improving the environmental protection of the use of the medical low temperature steam hydrogen peroxide rapid sterilization device.

[0033] In one embodiment of the utility model, the nickel-platinum ion catalyst 31 includes a shell and a filter element containing nickel-platinum ions installed in the shell. The high-temperature heated hydrogen peroxide waste gas is filtered by the filter element containing nickel-platinum ions and decomposed into water and oxygen, thereby improving the environmental friendliness of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0034] In one embodiment of the utility model, the high temperature heater 30 is a pipeline electric heater 10. The pipeline electric heater 10 is easy to install and use, and easy to purchase, which improves the convenience of use of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0035] like Figure 1As shown, it also includes a fourth solenoid valve 32, an air filter 33 and a three-way connector 34. The three-way connector 34 includes a first interface, a second interface and a third interface. The first interface is connected to the sterilization chamber 1, the second interface is connected to the second solenoid valve 26, the third interface is connected to the fourth solenoid valve 32, the air filter 33 is connected to the fourth solenoid valve 32, and the fourth solenoid valve 32 is connected to the controller. In this embodiment, the air can enter the sterilization chamber 1 aseptically after passing through the air filter 33, avoiding contamination of surgical instruments, thereby improving the safety of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0036] like Figure 1 As shown, the fifth solenoid valve 35 is also included, and the fifth solenoid valve 35 is connected and installed between the air extraction port 7 and the sterilization chamber 1. The fifth solenoid valve 35 is connected to the sterilization chamber 1, and the controller is in communication with the fifth solenoid valve 35. In this embodiment, the connection and disconnection between the vacuum pump 5 and the sterilization chamber 1 are controlled by the connection and disconnection of the fifth solenoid valve 35, thereby improving the convenience of use of the medical low-temperature steam hydrogen peroxide rapid sterilization device.

[0037] In one embodiment of the utility model, the use of a medical low-temperature steam hydrogen peroxide rapid sterilization device to sterilize surgical instruments comprises the following steps: 1) opening the sealed pressure-resistant door 6 of the sterilization chamber 1, placing the surgical instruments to be sterilized into the sterilization chamber 1, and closing the front and rear doors of the sterilization chamber 1; the electric heating plate 11 on the outer wall of the sterilization chamber 1 is powered on for heating, so that the temperature of the sterilization chamber 1 wall and the surgical instruments placed in the chamber reaches 55°C to 65°C (detected by the first temperature sensor 12);

[0038] 2) Start the vacuum pump 5 and open the fifth solenoid valve 35, and simultaneously extract the air in the sterilization chamber 1 and the cavity of the negative pressure flash steaming device 2. When the pressure sensor 13 detects that the negative pressure reaches 50Pa to 100Pa, close the fifth solenoid valve 35 and the vacuum pump 5;

[0039] 3) Turn on the electric heater 10 of the negative pressure flash steaming device 2 to heat the stainless steel thick plate 15, and control the temperature of the heated thick plate 15 to be maintained within the range of 120°C to 150°C through the second temperature sensor 16 and the temperature controller; then open the first solenoid valve 18, and add the 6% to 8% hydrogen peroxide solution in the sterilant storage box 20 into the cavity 9 of the negative pressure flash steaming device 2 in a timely and quantitative manner through the first doser 19, and flash evaporate under the conditions of negative pressure 50Pa to 100Pa and 120°C to 150°C. Saturated hydrogen peroxide vapor is formed and quickly filled into the sterilization chamber 1, filling the surgical instrument surface, the inner wall of the lumen and the gap in the sterilization chamber 1, and the negative pressure and hydrogen peroxide concentration in the sterilization chamber 1 are maintained for 4 to 10 minutes for sterilization (in actual operation, after the saturated hydrogen peroxide vapor is filled into the sterilization chamber, the fifth solenoid valve 35 and the vacuum pump 5 are closed, so that the sterilization chamber 1 is left in a sealed state for 4 to 10 minutes, so that the hydrogen peroxide vapor in the sterilization chamber 1 can be fully diffused and kill the microorganisms acting on the surface of the surgical instrument and the inner wall of the lumen);

[0040] 4) After sterilization for 4 to 10 minutes, the vacuum pump 5 is started again and the fifth solenoid valve 35 is opened, and the above-mentioned operation process of items 2) and 3) is repeated to form a sterilization mode of repeated pulsating vacuuming, vaporization of hydrogen peroxide sterilant and filling into the sterilization chamber 1 for 2 to 10 times, so as to ensure that the sterilization chamber 1 can still be filled with surgical instruments for 10 minutes. ～6 Sterilization assurance level;

[0041] 5) After the above-mentioned sterilization process is completed, the vacuum pump 5 is started and the fifth electromagnetic valve 35 is opened to extract the hydrogen peroxide vapor filled in the sterilization chamber 1. At the same time, the vacuum pump 5 draws the hydrogen peroxide vapor into the pipeline electric heater 10 to heat it to about 300° C., so as to promote the preheating and decomposition of hydrogen peroxide molecules, and then further fully decomposes the hydrogen peroxide into water and oxygen through the nickel platinum ion catalyst 31 equipped with a nickel platinum ion filter element. When the negative pressure reaches the range of 100Pa to 800Pa, the fifth electromagnetic valve 35 and the vacuum pump 5 are closed. ; Turn on the oxygen generator 24 and the superoxide generator 25, and fill the sterilization chamber 1 with superoxide gas through the second solenoid valve 26 and the connecting pipe; at the same time, 20 ml of the analytical agent prepared with a 20% alcohol aqueous solution is quantitatively injected from the analytical liquid storage box 29 into the cavity 9 of the negative pressure flash vaporization device 2 through the third solenoid valve 27, the connecting pipeline, and the second quantitative device 28, and the 20% alcohol aqueous solution is quickly vaporized and filled into the sterilization chamber 1, and the two are combined to quickly decompose the hydrogen peroxide sterilant remaining in the sterilization chamber 1 and on the surface of the surgical instrument.

[0042] 6) After the sterilization and analysis process is completed, the controller opens the fourth solenoid valve 32, and fills the sterilization chamber 1 with sterile air after filtering through the air filter 33, so that the sterilization chamber 1 is at the same pressure as the outside, and then opens the pressure-resistant door 6 of the sterilization chamber 1, takes out the sterilized surgical instruments, and completes the entire sterilization process within 40 to 60 minutes.

[0043] The utility model provides a medical low-temperature steam hydrogen peroxide rapid sterilization device, comprising a vacuum-sealed sterilization cabin 1 with a temperature of 55°C to 65°C, a negative pressure flash steaming device 2, an analysis device 3, an exhaust gas high-temperature ion catalytic device 4, a vacuum pump 5, and a controller. First, a pressure-resistant door 6 is opened, surgical instruments are placed in the sterilization cabin 1, and the vacuum pump 5 is turned on. When the negative pressures of the cavities 9 in the sterilization cabin 1 and the negative pressure flash steaming device 2 both reach 50Pa to 100Pa, the vacuum pump 5 is turned off, and an electric heater 10 heats the temperature in the cavity 9 to 120°C to 150°C, so that the hydrogen peroxide liquid with a concentration of 6% to 8% in the cavity 9 is flash-evaporated under the conditions of a negative pressure of 50Pa to 100Pa and 120°C to 150°C, forming saturated hydrogen peroxide vapor and rapidly filling it into the sterilization cabin 1 to sterilize the surgical instruments. Then, the vacuum is turned on. Pump 5, repeat the above operation, form 2 to 10 times of repeated pulsating vacuum and sterilization mode of vaporizing hydrogen peroxide sterilant and filling it into the sterilization chamber 1; finally, turn on the vacuum pump 5, draw the hydrogen peroxide vapor filled in the sterilization chamber 1 into the exhaust gas high-temperature ion catalytic device 4, so that the hydrogen peroxide vapor drawn out from the sterilization chamber 1 is decomposed into water and oxygen. When the negative pressure in the sterilization chamber 1 reaches 100Pa to 800Pa, turn off the vacuum pump 5, turn on the analysis device 3, and analyze the hydrogen peroxide remaining on the surface of the surgical instrument. The exhaust gas high-temperature ion catalytic device 4 and the analysis device 3 work together to quickly decompose the hydrogen peroxide sterilant remaining in the sterilization chamber 1 and on the surface of the surgical instrument; then flush sterile air into the sterilization chamber 1 to make the sterilization chamber 1 equal to the outside pressure, open the pressure-resistant door 6, take out the sterilized surgical instrument, and complete the whole sterilization process. The medical low-temperature steam hydrogen peroxide rapid sterilization device provided by the utility model adopts a low-concentration hydrogen peroxide sterilant of 6% to 8%, thereby avoiding the management of hazardous chemicals and being safer to use. The low-concentration hydrogen peroxide sterilant of 6% to 8% is adopted, and the sterilization process is completed in a vacuum-sealed sterilization chamber 1 under low temperature conditions. The hydrogen peroxide gas will not overflow during the sterilization process, and the residual hydrogen peroxide sterilizer after sterilization is rapidly decomposed into water and oxygen through the combined analysis of the exhaust gas high-temperature ion catalytic device 4 and the analysis device 3, which is friendly to people and the environment. In the vacuum-sealed sterilization chamber 1, the low-concentration hydrogen peroxide is flash-evaporated to form low-temperature saturated steam, and its penetration is improved, and the sterilization performance is also improved accordingly. Sterilization is carried out at a low temperature of 55°C to 65°C, and the whole sterilization process is completed within 40 to 60 minutes, and the corrosiveness is reduced, thereby achieving true low-temperature rapid sterilization.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A medical low-temperature steam hydrogen peroxide rapid sterilization device, characterized in that: It includes a vacuum-sealed sterilization chamber with a temperature of 55°C to 65°C, a negative pressure flash steaming device, a desorption device, a waste gas high-temperature ion catalysis device, a vacuum pump, and a controller, among which: The sterilization cabin includes a pressure-resistant door for taking in and placing surgical instruments; The vacuum pump comprises an air suction port and an air outlet, the air suction port is connected to the sterilization chamber, and the air outlet is connected to the waste gas high-temperature ion catalytic device; The negative pressure flash steaming device comprises a cavity, the cavity is connected to the sterilization chamber, an electric heater is arranged in the cavity, the negative pressure flash steaming device vaporizes the hydrogen peroxide solution with a concentration of 6% to 8% in the cavity, and the vaporized hydrogen peroxide enters the sterilization chamber to sterilize the surgical instrument; The analyzing device is in communication with the sterilization chamber and is used to analyze the hydrogen peroxide remaining on the surface of the surgical instrument; The waste gas high temperature ion catalytic device decomposes the residual hydrogen peroxide vapor in the sterilization chamber drawn out from the gas outlet into water and oxygen; The controller is communicatively connected with the vacuum pump, the negative pressure flash vaporization device, the analysis device, and the exhaust gas high temperature ion catalysis device.

2. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 1, characterized in that: An electric heating plate and a heat-insulating material are arranged on the side wall of the outer surface of the sterilization chamber. The electric heating plate is used to heat the sterilization chamber, and the heat-insulating material is used to keep the sterilization chamber warm.

3. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 1, characterized in that: A first temperature sensor, a pressure sensor and a hydrogen peroxide concentration sensor are installed on the top of the sterilization chamber. The first temperature sensor, the pressure sensor and the hydrogen peroxide concentration sensor are all in communication connection with the controller.

4. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 1, characterized in that: The negative pressure flash vaporization device also includes a thick metal plate, a second temperature sensor, a liquid adding tube, a first solenoid valve, a first dosing device, and a sterilant liquid storage box. The thick metal plate and the second temperature sensor are both located in the cavity. The thick metal plate is installed on two side walls opposite to each other in the cavity. The electric heater and the second temperature sensor are both installed on the thick metal plate. The liquid adding tube includes a first end and a second end that are connected to each other. The first end extends into the cavity, and the second end is connected to the first solenoid valve. The first dosing device is connected and installed between the first solenoid valve and the sterilant liquid storage box. The electric heater, the second temperature sensor, and the first solenoid valve are all communicatively connected to the controller.

5. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 4, characterized in that: The analysis device includes an oxygen generator, a superoxide generator, a second solenoid valve, a third solenoid valve, a second dosator, and an analysis liquid storage box. The liquid adding tube also includes a third end connected to both the first end and the second end. The second solenoid valve is connected to the sterilization chamber. The superoxide generator is connected and installed between the second solenoid valve and the oxygen generator. The third end is connected to the third solenoid valve. The second dosator is connected and installed between the third solenoid valve and the analysis liquid storage box. The second solenoid valve and the third solenoid valve are both communicatively connected to the controller.

6. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 1, characterized in that: The exhaust gas high-temperature ion catalytic device includes a high-temperature heater and a nickel-platinum ion catalyst. The gas outlet is connected to the inlet of the high-temperature heater, the outlet of the high-temperature heater is connected to the inlet of the nickel-platinum ion catalyst, the outlet of the nickel-platinum ion catalyst is connected to the atmosphere, the nickel-platinum ion catalyst is used to decompose the high-temperature heated hydrogen peroxide exhaust gas into water and oxygen, and the high-temperature heater is communicatively connected to the controller.

7. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 6, characterized in that: The nickel-platinum ion catalyst comprises a shell and a filter element containing nickel-platinum ions installed in the shell. The high-temperature heated hydrogen peroxide waste gas is filtered by the filter element and decomposed into water and oxygen.

8. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 6, characterized in that: The high temperature heater is a pipeline electric heater.

9. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 5, characterized in that: It also includes a fourth solenoid valve, an air filter and a three-way joint, the three-way joint includes a first interface, a second interface and a third interface, the first interface is connected to the sterilization chamber, the second interface is connected to the second solenoid valve, the third interface is connected to the fourth solenoid valve, the air filter is connected to the fourth solenoid valve, and the fourth solenoid valve is communicatively connected to the controller.

10. The medical low-temperature steam hydrogen peroxide rapid sterilization device according to claim 1, characterized in that: It also includes a fifth solenoid valve, which is installed between the air suction port and the sterilization chamber, the fifth solenoid valve is connected to the sterilization chamber, and the controller is in communication with the fifth solenoid valve.

Images