RU2296585C1 - Object disinfecting and sterilizing apparatus - Google Patents

Abstract

FIELD: disinfection and sterilization of medical designation objects such as complex-shape tools for surgery, stomatology, tubular members and articles such as endoscopes, laparoscopes, catheters and so on objects including thermolabile articles.

SUBSTANCE: apparatus for disinfecting and sterilizing includes chamber whose inner surface reflects UV -irradiation; pulse UV-lamps arranged inside chamber in quartz tubes by rows (at least two lamps in each row); latticed trays for treated objects; electric power source connected through high-voltage conductors with pulse UV-lamps; automatic control unit made with possibility for setting repetition frequency of high-voltage pulses of power source; device for spraying antiseptic matter. Said device is communicated through pipelines with antiseptic matter sprayers mounted on inner surface of chamber in such a way that aerosol provided by them in chamber may perform vortex motions. Sterilized ozonated air created by cooling of pulse lamps is fed inside working chamber. Biologically active aerosol-gas mixture generated at sterilization process is pumped through inner cavities of treated object.

EFFECT: shortened time period for sterilizing and disinfecting, possibility for treating complex-shape objects with deep cavities and tubular objects.

4 cl, 1 dwg

Description

The invention relates to a technique for disinfection and sterilization of medical devices, for example, surgical, dental instruments, complex instruments, as well as tubular instruments and products, such as endoscopes, laparoscopes, catheters, etc., including thermolabile products.

The device for disinfection and sterilization of objects contains a chamber with an internal surface that reflects ultraviolet radiation, with pulsed ultraviolet lamps placed inside the chamber, which are placed in quartz tubes and are arranged in rows of at least two lamps in each, mesh trays for the objects to be processed, a power supply unit connected to pulsed ultraviolet lamps using high-voltage conductors, the automation and control unit, configured to set the repetition time is high voltage pulses from the power supply unit, an antiseptic substance atomization device connected via pipelines to antiseptic substance atomizers (for example, hydrogen peroxide solution), which are mounted on the inner surface of the chamber in such a way that the aerosol created by them in the chamber makes vortex (turbulent) movements there, moreover, holes are made in the walls of the chamber through which sterilized ozonized air is obtained inside the chamber, obtained by cooling flash lamps, and a fitting with with the help of which the biologically active aerosol-gas mixture formed during the sterilization process is pumped through the internal cavities of the treated object.

The use of the invention will improve processing efficiency, reduce processing time, will allow you to process objects and products of complex shape, as well as tubular products.

The invention relates to the field of disinfection and sterilization of medical devices, such as surgical, dental instruments, instruments of complex shape, as well as tubular instruments and products, such as endoscopes, laparoscopes, catheters, etc., including thermolabile products.

A device for sterilizing products based on the use of solutions of hydrogen peroxide [1]. The sterilizer consists of a housing, inside of which there is a working chamber with trays for processed objects, a vacuum pump connected to the chamber by pipelines, a container with a solution of hydrogen peroxide, a device for injecting a solution of hydrogen peroxide into the chamber, a device for creating a corona discharge. The device operates as follows. The past pre-sterilization treatment of the product is placed in the working chamber, which then closes hermetically. Air is pumped out of the chamber to a pressure of 0.5 mm Hg, then ~ 2 ml of a 58% hydrogen peroxide solution is injected into it, which inside the chamber turns into a fine aerosol that fills the entire volume of the working chamber, including all cavities of the sterilized products. After a certain period of time, the contents of the working chamber are again pumped out to a pressure of 0.5 mm Hg, and pumping is carried out through a dielectric tube in which the corona discharge is lit. Passing through the discharge plasma, hydrogen peroxide is destroyed, and a water aerosol enriched with oxygen enters the atmosphere. After pumping out the chamber, ~ 2 ml of a 58% hydrogen peroxide solution is again injected into it. During the sterilization cycle, the working chamber is pumped out and the hydrogen peroxide solution is injected into it several times. The sterilization time in this sterilizer is 65 ÷ 80 minutes.

The disadvantages of this sterilizer include:

- a high concentration of the hydrogen peroxide solution used, which requires increased precautions when working with it;

- when injecting a solution of hydrogen peroxide into the working chamber, the solution transforms into a fine aerosol and partial evaporation of the solution. A certain energy is expended on this. Aerosol and vapors are very cold, and chilled hydrogen peroxide has low activity even at a high concentration of hydrogen peroxide - 58%. This leads to an increase in the time of sterilization of objects;

- to implement this method requires a rather expensive and massive equipment (installation cost ~ $ 200,000, weight - 430 kg). This limits the use of this device.

The closest in technical essence to the claimed invention is a device for disinfection and sterilization of objects described in [2].

The device comprises a camera with an internal surface reflecting ultraviolet radiation, with pulsed ultraviolet lamps placed inside the chamber, which are placed in quartz tubes and arranged in rows of at least two lamps in each, mesh trays for the objects to be processed, a power supply unit connected to pulsed ultraviolet lamps by high-voltage conductors , automation and control unit, configured to set the time for following the high voltage pulses from the power supply unit, A spraying property of an antiseptic substance, connected through pipelines to nebulizers of an antiseptic substance (for example, a solution of hydrogen peroxide).

The disadvantage of the device:

- the inability to sterilize objects of complex shape having deep cavities, as well as objects of tubular objects.

The technical result of the invention is to reduce the time of disinfection and sterilization, as well as the sterilization of complex objects with deep cavities and tubular objects.

The technical result is achieved in that in a device for disinfection and sterilization of objects containing a chamber with an inner surface that reflects ultraviolet radiation, with pulsed ultraviolet lamps placed inside the chamber, which are placed in quartz tubes and arranged in rows of at least two lamps in each, mesh trays for processed objects, a power supply unit connected to pulsed ultraviolet lamps, an automation and control unit configured to set the time is followed high voltage pulses from the power supply unit, an antiseptic substance atomization device connected via pipelines to antiseptic substance atomizers, the atomizers are mounted on the inner surface of the chamber in such a way that the aerosol they create in the chamber makes vortex (turbulent) movements there, and holes are made in the chamber walls, through which sterile ozonized air is obtained inside the chamber by the fan, obtained by cooling flash lamps, inside the chamber nipples, with the help of which the biologically active aerosol-gas mixture formed during the sterilization process is pumped through the internal cavities of the treated object.

The drawing schematically shows the working chamber of the device for disinfection and sterilization of objects, where

1 - the body of the working chamber,

2 - the processed object,

3 - mesh tray

4 - nebulizers of antiseptic substances,

5 - aerosol,

6 - pulsed UV lamp

7 - quartz tube,

8 - UV radiation

9 - fan

10 - holes

11 - ozonized air,

12 - biologically active agents,

13 - fitting

14 - pump.

The device operates as follows.

The treatment object 2, previously presterilized, is placed on the tray 3 in the working chamber 1 and using sterile hoses and a fitting 13 connect the tubular cavity of the treated object with the pump 14. Then the working chamber is closed and sterilized. For this, a solution of an antiseptic substance, for example, a solution of hydrogen peroxide, which is converted into an aerosol 5 inside the chamber 1, is fed through the nebulizers 4 into the working chamber, and the aerosol is supplied in such a way that it makes vortex movements in the chamber. This allows the aerosol to penetrate into sufficiently deep cavities of the treated object 2 and to settle on its surface. After introducing aerosol 5 into the chamber 1, using a flashlight 6 placed in quartz tubes 7, a powerful broadband radiation pulse 8 (including the UV region) is formed with a radiation spectrum that covers all wavelengths of the absorption spectrum of hydrogen peroxide 5. Under the influence of this pulse radiation to hydrogen peroxide, photochemical reactions of decomposition of hydrogen peroxide occur:

H ₂ O ₂ → 2OH

H ₂ O ₂ → H ₂ O + O

H ₂ O ₂ → HO ₂ + H

Substances obtained as a result of photochemical reactions are strong biologically active agents 12 that act on the processing object. At the same time, sterile ozonized air 11, obtained by cooling flash lamps 6, which also acts on the object being processed, is supplied through the openings 10 to the chamber 1 through the openings 10. The vortex turbulent movement of the aerosol created inside the chamber 1 involves biologically active agents 12 and ozonized air 11, which together with the aerosol 5 penetrate into the deep cavities of the treated object 2 and act on its surface. The resulting biologically active aerosol-gas mixture containing aerosol 5 of a hydrogen peroxide solution, biologically active agents 12, sterile ozonized air 11 obtained as a result of photochemical reactions, are pumped through the internal tube cavity of the treated object by pump 14, sterilizing it.

Sterile ozonized air introduced into the chamber, acting together with the aerosol of a solution of hydrogen peroxide, a broadband UV-pulse of radiation and biologically active agents on the treated object, reduces the time of sterilization of the object.

This device allows you to use when sterilizing objects 3% solution of hydrogen peroxide (i.e. in a solution of 97% water). Biologically active agents resulting from photochemical reactions have a short lifetime and are destroyed with the formation of molecular oxygen and water. Excess ozone is intensively dissolved in this water and the water of the hydrogen peroxide solution, giving a biologically pure waste product - water enriched with ozone. During sterilization, the temperature in the working chamber does not rise above 60 ° C. This allows you to sterilize, including thermolabile objects.

Thus, in the proposed device, the treated object is exposed to an aerosol of a solution of hydrogen peroxide, which is introduced into the working chamber in such a way that it (the aerosol) makes vortex movements there, with a powerful broadband pulse with a radiation spectrum that covers all the wavelengths of the absorption spectrum of hydrogen peroxide, biologically active agents resulting from photochemical reactions are additionally exposed to another active substance, for example ozone, and the resulting active aerosol The call mixture is pumped through the inner tubular cavities of the treated object. This allows you to sterilize objects of complex shape having internal tubular cavities, as well as objects of a tubular shape, such as endoscopes, laparoscopes, catheters, etc., to reduce processing time, to expand the range of processed objects, including thermolabile ones.

Information sources

1. New generation low-temperature plasma sterilizer HMTS-80 Human Meditek, description of the device.

2. Patent No. 2234944, MKI A 61 L 2/10 - prototype.

Claims (4)

1. Device for disinfection and sterilization of objects, containing a chamber with an internal surface that reflects ultraviolet radiation, with pulsed ultraviolet lamps placed inside the chamber, placed in quartz tubes and arranged in rows of at least two lamps in each, mesh trays for the objects to be processed, power supply unit connected by high-voltage conductors with flash lamps, an automation and control unit, configured to set the time for following the high-voltage pulses from power supply unit, an antiseptic agent atomization device connected via pipelines to antiseptic agent nebulizers, characterized in that the antiseptic agent nebulizers are mounted on the inner surface of the chamber in such a way that the aerosol created by them in the chamber makes vortex movements there. 2. The device according to claim 1, characterized in that the sterile ozonized air is supplied inside the chamber. 3. The device according to claim 1 or 2, characterized in that the biologically active aerosol-gas mixture formed during sterilization is pumped through the internal cavities of the treated object. 4. The device according to claims 1, 2 or 3, characterized in that a solution of hydrogen peroxide is used as an antiseptic substance.