RU239833U1 - A sterilization device based on the combined use of ozone gas and hydrogen peroxide aerosol - Google Patents

Abstract

This utility model relates to devices for sterilizing medical instruments using ozone gas and hydrogen peroxide aerosol. The utility model relates to the field of medicine and is intended for sterilizing medical or surgical instruments and devices. The sterilization device, based on the combined use of ozone gas and hydrogen peroxide aerosol, comprises a housing in which a sterilization chamber and a control unit are connected via a screw connection. An electric heater and an ultrasonic aerosol generator are integrated into the sterilization chamber via screw connections. A dehumidifier, a control panel, a recirculation gas pump, a digital programmable controller, and a high-voltage ozone generator are integrated into the control unit via a screw connection. The control panel is connected via a wired connection to the digital programmable controller, which is connected via a wired connection to the recirculation gas pump, the high-voltage ozone generator, the ultrasonic aerosol generator, and the electric heater.

Description

The utility model relates to devices for sterilizing medical instruments using ozone gas and hydrogen peroxide aerosol.

The utility model relates to the field of medicine and is intended for sterilization of medical or surgical instruments and devices.

A known invention, a multifunctional ozone sterilizer (patent document RU 2700919 C1), comprises a sterilization chamber, a power supply unit, a switching and control unit, an ozonizer unit, an air circulation pump unit, an ozone destructor unit, and is also equipped with a unit of ultrasonic emitters, a unit of liquid pumps, a unit of liquid tanks, a unit of liquid filters, a unit of sensors for measuring the liquid level in the sterilization chamber, a unit of electrodes for measuring the oxidation-reduction potential, a unit of ozone concentration sensors, a unit of sterilization chamber sensor-locks, which includes infrared sensors and sterilization chamber lid lifters. Moreover, the switching and control unit has a display and a built-in microcontroller with a control program, and the air circulation pump unit is equipped with air heaters with air temperature sensors. The invention improves the sterilization quality of medical instruments and implants. The disadvantage of this device is that the sterilizing agent is only ozone, in addition, this device has a more complex design and is less efficient in operation.

A known invention, a sterilizer for sterilization with hydrogen peroxide vapor (patent document RU 2610206 C1), comprises a sterilization chamber with a sealed lid and a heater, a means for generating high-frequency plasma, and a vacuum pump connected to the sterilization chamber via a vacuum line, which is also connected to an air inlet line and a hydrogen peroxide supply line containing a hydrogen peroxide vapor generating unit, including an evaporator with a heater. The sterilizer also contains a densitometer for monitoring the hydrogen peroxide vapor concentration, and the means for generating high-frequency plasma has a high-frequency generator and a grid electrode installed within the sterilization chamber along its inner surface. The hydrogen peroxide vapor generating unit is located outside the sterilization chamber and connected to it via several pipelines. The invention improves the quality of sterilization by uniformly distributing hydrogen peroxide vapor and plasma within the sterilization chamber. The disadvantage is that this device uses hydrogen peroxide and plasma for sterilization, and also contains a vacuum pump.

An invention is known of a multifunctional ozone sterilizer (patent document RU 2745455 C1), comprising power sources, a switching and control unit, an ultrasonic generator with an emitter, liquid level sensors, an ozone generator, an air compressor, an air heater with a temperature sensor, oxidation-reduction potential sensors, ozone concentration sensors, a linear actuator with a position sensor, infrared sensors, a sterilization chamber, an ozone destructor, wherein the switching and control unit is made in the form of a microcontroller with a control program with a touch screen connected to it, additionally equipped with a data output module, an osmotic filter, a reagent tank, a manual water supply valve, electromagnetic liquid valves for the inlet and outlet of the osmotic filter and the reagent tank, bypass electromagnetic liquid valves of the osmotic filter and the reagent tank, a manual water drain valve, an electromagnetic liquid valve for draining the sterilization chamber, an electromagnetic liquid a valve for draining the osmotic filter concentrate, while the data inputs of the data output module are connected to the microcontroller of the switching and control unit, and electromagnetic liquid valves are connected to each output channel of the data output module; also connected in series are a manual water supply valve, an electromagnetic liquid valve for the inlet of the osmotic filter, an osmotic filter, an electromagnetic liquid valve for the outlet of the osmotic filter, an electromagnetic liquid valve for the inlet of the reagent tank, a reagent tank, an electromagnetic liquid valve for the outlet of the reagent tank, an inlet for filling liquid into the sterilization chamber, and additionally, the inlet of the electromagnetic liquid valve for the inlet of the osmotic filter and the outlet of the electromagnetic liquid valve for the outlet of the osmotic filter are connected through the bypass valve of the osmotic filter, the inlet of the electromagnetic liquid valve for the inlet of the reagent tank and the outlet of the electromagnetic liquid valve for the outlet of the reagent tank are connected through the bypass valve of the reagent tank, also connected in series are a manual water drain valve, an electromagnetic liquid valve for draining the sterilization chamber, an outlet for draining liquid from the sterilization chamber, and additionally, between the manual water drain valve and the electromagnetic valve for draining the sterilization chamber, an electromagnetic liquid valve for draining the osmotic filter concentrate and an outlet are connected in series Draining the osmotic filter concentrate. The disadvantage of this device is its complex design and complicated sterilization process.

The closest to the utility model in terms of the set of essential features is the Ozone Sterilizer (Patent Document CN 2518515 Y) is a device for removing dirt, sterilization and disinfection, which is an electronic device used in households, hotels, restaurants, entertainment venues and offices, etc. The utility model uses an ozonizer to produce ozone and an air pump to supply ozone to the relevant environments under the control of a central intelligent controller to achieve the purposes of removing dirt, sterilization and disinfection. This utility model can be widely used for removing dirt with a detergent, automatically refreshing or timely sterilizing indoor air per hour, decomposing pesticides in agricultural products, disinfecting products and drinking water, as well as in medical care, etc. The device consists of an air pump, an ozone generation circuit, an ozone-air mixing device, a central intelligent controller and power supply, and a reception control display circuit (panel) inside the housing, enabling manual operation. When the remote reception function is selected, the device can also be controlled remotely. This dirt removal, sterilization, and disinfection device uses a single-chip microcomputer for intelligent control and has the advantages of small volume, light weight, and multifunctionality. It is an ideal new-generation air freshening, sterilization, and disinfection device for environmental protection in homes and public spaces. A disadvantage of this device is that it uses only an ozone-air mixture as a sterilizing agent.

The utility model is designed to eliminate the identified deficiencies and present an effective sterilization device in which the combined use of ozone gas and hydrogen peroxide aerosol provides an increase in sterilization efficiency compared to the separate use of sterilizing agents, reduces sterilization time, sterilization occurs without increasing the temperature and pressure in the sterilization chamber, and a high sterilization effect, including for spores of pathogenic microorganisms.

Disclosure of the essence of the utility model

The technical result is the creation of an effective sterilization device in which the combined use of ozone gas and hydrogen peroxide aerosol reduces sterilization time.

The technical result is achieved due to the fact that the sterilization device, based on the combined use of ozone gas and hydrogen peroxide aerosol, contains a housing in which a sterilization chamber and a control unit are connected via a screw connection, an electric heater and an ultrasonic aerosol generator are built into the sterilization chamber via screw connections, a dehumidifier, a control panel, a recirculation gas pump, a digital programmable controller, an ozone generator are built into the control unit via a screw connection, the control panel is connected via a wire connection to the digital programmable controller, which is connected via a wire connection to the recirculation gas pump, the ozone generator, the ultrasonic aerosol generator and the electric heater.

The sterilization device based on the combined use of ozone gas and hydrogen peroxide aerosol is shown in Figs. 1 and 2 and comprises a housing in which a sterilization chamber (1) and a control unit (2) having a control panel (5) are connected via a screw connection. An electric heater (3) and an ultrasonic aerosol generator (9) are built into the sterilization chamber (1) via screw connections, a dehumidifier (4), a control panel (5), a recirculation gas pump (6), a digital programmable controller (7), an ozone generator (8) are built into the control unit (2) via a screw connection, the control panel (5) is connected via a wire connection to the digital programmable controller (7), which is connected via a wire connection to the recirculation gas pump (6), the ozone generator (8), the ultrasonic aerosol generator (9) and the electric heater (3).

The sterilization device, based on the combined use of ozone gas and hydrogen peroxide aerosol, operates as follows, as shown in Fig. 2.

The sterilization chamber (1) is loaded with the object to be sterilized and a 3% hydrogen peroxide solution. The operator selects the sterilization program and starts it in the control unit (2) on the control panel (5). The digital programmable controller (7) starts the ozone generator (8), the recirculation gas pump (6), and the ultrasonic aerosol generator (9). The air and ozone mixture is drawn from the sterilization chamber (1) by the recirculation gas pump (6) through a silicone tube, passes through the dryer (4), passes through the ozone generator (8), where the oxygen in the air is converted into ozone, and the ozone-enriched mixture is returned to the sterilization chamber (1) through a silicone tube. The ozone generator produces 15 g of ozone per hour. The produced gas is delivered by the recirculation pump (6) to the sterilization chamber (1), where it is mixed with the hydrogen peroxide aerosol produced by the ultrasonic aerosol generator (9) in the sterilization chamber (1). Subsequently, the gas after the reaction is sucked in by the recirculation gas pump (6) and passed again, through the dehydrator (4), through the ozone generator (8). At the end of the program, the digital programmable controller (7) will turn off the ozone generator (8), the ultrasonic aerosol generator (9) and turn on the electric heater (3) to heat the chamber to 60°C for 30 minutes to dry the sterilized object and neutralize the ozone. Upon completion of drying, the programmable controller (7) will turn off all components, the device is ready for a new cycle.

According to protocol No. SD-20, the results of bacteriological testing of sterilization and disinfection equipment, a sterilization device based on the combined use of ozone gas and hydrogen peroxide aerosol, were not detected in bacteriological samples of test culture growth.

Thus, when using an ozone-air mixture and hydrogen peroxide aerosol, the exposure time for complete destruction of Bacillus licheniformis spores was no more than 120 minutes, after which no bacterial growth was observed. Using only an ozone-air mixture required at least 180 minutes of treatment to completely destroy the bacteria, as 120 minutes of exposure did not sterilize the test objects.

The use of this utility model increases sterilization efficiency compared to the use of sterilizing agents alone, reduces sterilization time, and sterilization occurs without increasing the temperature or pressure in the sterilization chamber. Microbiological studies confirm the sterilization effect, including for pathogenic microorganism spores.

Fig. 1 shows a diagram of the general appearance of a sterilization device based on the combined use of ozone gas and hydrogen peroxide aerosol, consisting of a sterilization chamber (1), a control unit (2) and a control panel (5).

Fig. 2 shows a diagram of a device for sterilization based on the combined use of ozone gas and hydrogen peroxide aerosol and the movement of substances in it, consisting of a sterilization chamber (1), a control unit (2), an electric heater (3), a dehumidifier (4), a control panel (5), a recirculation gas pump (6), a digital programmable controller (7), a high-voltage ozone generator (8), and an ultrasonic aerosol generator (9).

Claims (1)

A sterilization device based on the combined use of ozone gas and hydrogen peroxide aerosol, characterized in that it comprises a housing, a sterilization chamber configured to load the object to be sterilized and a hydrogen peroxide solution, a control unit, an electric heater, a dehumidifier, a control panel configured to select a sterilization program, a recirculation gas pump configured to draw, through the dehumidifier, and return to the sterilization chamber a mixture of air and ozone, a digital programmable controller configured to turn off the ozone generator and the ultrasonic aerosol generator and turn on the electric heater to dry the object to be sterilized and neutralize the ozone, an ozone generator, an ultrasonic aerosol generator, wherein the sterilization chamber and the control unit are connected via a screw connection, the electric heater and the ultrasonic aerosol generator are built into the sterilization chamber via screw connections, a dehumidifier, a control panel, a recirculation gas The pump, digital programmable controller and ozone generator are built into the control unit through a screw connection, and the control panel is connected to the digital programmable controller through a wire connection, and the programmable controller is connected to the recirculation gas pump, ozone generator, ultrasonic aerosol generator and electric heater through a wire connection.