CN217091482U

CN217091482U - Internal disinfection system of breathing machine applying ultraviolet photocatalyst principle

Info

Publication number: CN217091482U
Application number: CN202123230378.5U
Authority: CN
Inventors: 曾琢; 吴菡滢
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-08-02
Anticipated expiration: 2031-12-21

Abstract

The utility model provides an internal disinfection system of a breathing machine applying ultraviolet photocatalyst principle, which comprises a shell, wherein the shell is internally provided with an ultraviolet lamp and a hollow fiber tube porous structure sleeved outside the ultraviolet lamp, the outer surface of the hollow fiber tube porous structure and the inner wall of the shell are provided with a plurality of mixed metal photocatalyst coatings, and the inner surface of the hollow fiber tube porous structure is provided with a titanium dioxide photocatalyst coating; the utility model provides an inside disinfection system of breathing machine, it is effectual to disinfect.

Description

Internal disinfection system of breathing machine applying ultraviolet photocatalyst principle

Technical Field

The utility model belongs to the technical field of hospital's disinfecting equipment, in particular to use inside disinfection system of breathing machine of ultraviolet ray photocatalyst principle.

Background

In the presence of epidemic or resistant bacteria, hospital ventilators may become contaminated with patient exhalation gases, secretions, and other infectious agents from the patient's room, and must therefore be thoroughly terminally sterilized before use in the next patient, including the exterior surfaces of the equipment, the breathing circuit, the humidifier water tank, and the entire internal airway structure of the ventilator. The thorough disinfection of the breathing machine is an important link for reducing nosocomial infection and preventing infectious diseases from being infected through the breathing machine. The outer surface of the breathing machine is not difficult to sterilize, peripheral components such as a breathing pipeline, an external flow, a pressure sensor, a humidifier water tank and the like of the breathing machine are easy to sterilize, or a disposable sterile product is adopted, and even a breathing valve can be detached to sterilize. However, the whole gas path structure inside the respirator comprises a gas conveying pipeline, a sampling pipe, a sensor, an electromagnetic valve and other parts, so that the traditional disinfection liquid wiping test cannot be adopted, and the traditional disinfection methods such as high-temperature disinfection and ultraviolet irradiation disinfection cannot be adopted, because the methods cannot be implemented on the internal gas path structure, and meanwhile, the disinfection factors can also damage related sensors and components. For pathogenic microorganisms which can survive in vitro for a long time, such as gastric viruses, spores, tuberculosis and some drug-resistant bacteria, the infection source can not be eliminated by sealing for a period of time. Therefore, thorough sterilization of the internal airway structure of a ventilator should be performed after each patient use, even after a period of use by the same patient.

The product for disinfecting the breathing machine by using ozone is produced or generated in equipment, the ozone is directly connected to the airflow output end or the expiration valve end of the breathing machine through a pipeline and is inconsistent with the working loop of a normal breathing machine, the breathing machine is not opened to a working state, and a plurality of valves inside the breathing machine are not opened, so that the disinfection factor ozone can only reach an external loop and partial expiration valve and expiration gas path structures, the flow direction of gas in normal working can not be followed, all parts possibly polluted by the breathing machine in the working state can be reached, the ozone can not reach the inside of a sampling pipe, and the disinfection of a real internal complete gas path structure can not be carried out. Meanwhile, the decomposition of ozone for disinfection requires a certain time, and the ozone cannot be used in the environment with people. Therefore, a disinfection factor harmless to human bodies needs to be found, and the internal and external air path structures of the breathing machine are disinfected under the condition of coexistence of human and machine.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an use the inside disinfection system of breathing machine of ultraviolet ray photocatalyst principle. The utility model discloses specific technical scheme as follows:

the utility model provides an use inside disinfection system of breathing machine of ultraviolet ray photocatalyst principle, this use inside disinfection system of breathing machine of ultraviolet ray photocatalyst principle include the shell, are equipped with the hollow fiber pipe porous structure in the ultraviolet lamp outside with the cover in the shell, and hollow fiber pipe porous structure's surface and shell inner wall are equipped with multiple mixed metal photocatalyst coating, and hollow fiber pipe porous structure's internal surface is equipped with titanium dioxide photocatalyst coating.

Further, the shell is communicated with a high-pressure oxygen/air output pipeline through a high-pressure oxygen/air output port.

Furthermore, the shell is communicated with a high-pressure oxygen/air input pipeline through a high-pressure oxygen/air input port, the other end of the high-pressure oxygen/air input pipeline is connected with oxygen supply/air supply of a hospital center, the ultraviolet lamp is an ultraviolet lamp tube with a specific wavelength, and the ultraviolet lamp emits 254nm ultraviolet rays.

Wherein, the nano-titanium dioxide (TiO2) is coated on the centripetal surface (inner surface) of the hollow fiber tube; the noble metals platinum and rhodium are coated on the centrifugal surface (outer surface) of the hollow fiber tube and the inner surface of the high-pressure gas resistant metal bin according to the proportion of 1:1 to form a plurality of mixed photocatalyst coating structures which are distributed in a three-dimensional way.

Furthermore, the internal disinfection system of the respirator applying the ultraviolet photocatalyst principle further comprises a control system, wherein the control system comprises a power supply, a timer, a display and a controller, the timer, the display and the ultraviolet lamp tube with the specific wavelength are all connected with the controller, and the power supply supplies power to other electronic components.

Furthermore, the ultraviolet lamp tube with the specific wavelength is connected with the high-pressure-resistant metal gas bin through an ultraviolet lamp tube fixing support frame, and the ultraviolet lamp tube fixing support frame comprises at least two fixing rings sleeved on the outer side wall of the ultraviolet lamp tube with the specific wavelength and a connecting rod for connecting the fixing rings with the inner side wall of the high-pressure-resistant metal gas bin.

Furthermore, the outer side wall of the porous structure of the hollow fiber tube is sleeved with at least two porous structure supporting frames of the hollow fiber tube, and the porous structure supporting frames of the hollow fiber tube are provided with through holes for the connecting rods to pass through.

Further, the shell is a high-pressure resistant metal gas cabin.

The utility model has the advantages as follows: the utility model provides an use inside gas circuit structure disinfection system of breathing machine of ultraviolet ray photocatalyst principle, high-pressure medical air or the anti high-pressure metal gas storehouse of oxygen input, specific wave band ultraviolet tube sends 254nm ultraviolet ray, arouse the photocatalyst activity of the titanium dioxide of hollow fiber tube porous structure to the heart layer, O2 and H2O in with medical air or medical oxygen are the substrate, generate the multiple oxidation disinfection group of trace, multiple mixed metal photocatalyst through the internal surface in hollow fiber tube porous structure dorsal layer and anti high-pressure metal gas storehouse, hydrogen peroxide and hydroxyl free ion in to the gas play stabilizing effect, and through cascade reaction stable propagation in the air current. The airflow output from the high-pressure-resistant metal gas bin contains stable micro-oxidation disinfection groups, enters the internal air path structure of the respirator from the working gas input port of the respirator, and the oxidation disinfection groups in the airflow are continuously deposited on all surfaces to act on biological macromolecules of potential microorganisms, including protein, DNA or RNA, so that the biological macromolecules are inactivated, the microorganisms are killed, and the sterilization effect of the internal air path structure can be achieved after the biological macromolecules last for more than 6 hours. The oxidation disinfection groups are contacted with microorganisms or other substances to generate electron-deprivation reaction instantly and annihilate to generate H2O and O2, so that gas discharged from the breathing end of the respirator does not pollute the environment and ecology, residual trace hydrogen peroxide and hydroxyl free ions are completely harmless to people, animals and plants, no additional treatment is needed, the gas can be safely and carelessly discharged into the outside air, and can be reduced into H2O and O2 in a short time.

Drawings

FIG. 1 is a schematic diagram of an exemplary UV photocatalyst based internal sterilization system for a ventilator;

FIG. 2 is a schematic diagram of an exemplary wavelength-specific UV tube;

FIG. 3 is a schematic structural view of a porous structure of a hollow fiber tube in an example;

FIG. 4 is a schematic structural view of an exemplary titanium dioxide photocatalyst coating and a variety of mixed metal photocatalyst coatings;

fig. 5 is a schematic structural diagram of an example ultraviolet lamp tube fixing support frame and a hollow fiber tube porous structure support frame.

Wherein, 1, a shell; 2. a high pressure oxygen/air input; 3. a high pressure oxygen/air output; 4. the ultraviolet lamp; 5. a hollow fiber tube porous structure; 6. a titanium dioxide photocatalyst coating; 7. the inner wall of the high-pressure resistant metal gas bin; 8. a plurality of mixed metal photocatalyst coatings; 9. the ultraviolet lamp tube fixing support frame; 10. a hollow fiber tube porous structure support frame; 11. oxygen supply/air supply for hospital centers; 12. a high pressure oxygen/air input line; 13. a high pressure oxygen/air output conduit; 14. a high pressure oxygen/air input port on the back of the ventilator; 15. and a controller.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.

Examples

As shown in fig. 1, a schematic structural diagram of a sterilization system inside a respirator applying the ultraviolet photocatalyst principle is shown, the sterilization system inside a respirator applying the ultraviolet photocatalyst principle comprises a housing 1, as shown in fig. 2, an ultraviolet lamp 4 and a hollow fiber tube porous structure 5 sleeved outside the ultraviolet lamp 4 are arranged in the housing 1, as shown in fig. 3, a plurality of through holes are arranged on the side wall of the hollow fiber tube porous structure 5, as shown in fig. 4, a plurality of mixed metal photocatalyst coatings 8 are arranged on the outer surface of the hollow fiber tube porous structure 5 and the inner wall 7 of a high pressure resistant metal gas bin, a titanium dioxide photocatalyst coating 6 is arranged on the inner surface of the hollow fiber tube porous structure 5, a high pressure oxygen/air output pipeline 13 is communicated with the housing 1 through a high pressure oxygen/air output port 3, the high pressure oxygen/air output pipeline 13 is used for communicating with a high pressure oxygen/air input port on the back side of the respirator, the shell 1 is communicated with a high-pressure oxygen/air input pipeline 12 through a high-pressure oxygen/air input port 2, the other end of the high-pressure oxygen/air input pipeline 12 is connected with oxygen supply/air supply 11 in the center of a hospital, and the ultraviolet lamp 4 emits 254nm ultraviolet rays.

Wherein, the ultraviolet lamp is an ultraviolet lamp tube with specific wavelength, the shell is a high-pressure resistant metal gas cabin which can be made of aluminum alloy material, the porous structure of the hollow fiber tube adopts a ceramic hollow fiber tube, the diameter is 5cm, the thickness is 4mm, the coating thickness of the mixed metal photocatalyst coating is 50nm, the coating thickness of the titanium dioxide photocatalyst coating is 5 μm, the high-pressure gas output from a high-pressure oxygen/air input pipeline 12 of a hospital center oxygen supply/air supply 11 is input into the high-pressure resistant metal gas cabin, the ultraviolet lamp tube with specific wavelength is started, the ultraviolet with specific wavelength of 254nm irradiates the centripetal surface of the porous structure 5 of the hollow fiber tube, the photocatalyst activity of the titanium dioxide (TO2) coating 6 on the centripetal surface of the hollow fiber tube is activated, and the oxygen and the water vapor in the air or the oxygen entering the high-pressure resistant metal gas cabin 1 are converted into various oxidation active groups, including hydrogen peroxide and hydroxyl radical ions. Ultraviolet rays and reflected light thereof leaking from the holes of the hollow fiber tube irradiate the vest surface of the hollow fiber tube and the inner surface of the high-pressure gas metal bin to activate a plurality of mixed metal photocatalysts, oxygen in the stable bin or hydrogen peroxide and hydroxyl free ions in the air are output from a high-pressure oxygen/air output port 3 through a high-pressure oxygen/air output pipeline 13 and are connected to a high-pressure oxygen/air input port 14 at the back of a respirator to provide a normal working air source of the respirator on a mold lung, and air or oxygen containing a trace of a plurality of oxidation disinfection groups enters an internal air path structure of the respirator and follows a normal working path, namely, the part of the respirator which is actually possibly polluted in clinical application comprises the internal air path structure, a sensor sampling tube, a respirator air output port, a breathing tube, a breathing valve and an expiratory outflow channel and acts on all surfaces which are possibly polluted, the sterilization effect is generated, the breathing machine internal gas circuit structure polluted by pathogenic microorganisms such as bacteria, viruses, fungi and the like can be completely sterilized after working for six hours generally, the sterilization factors are annihilated and generate H2O and/or O2 at the moment of action, the internal structure and components of the breathing machine or the anesthesia machine are not damaged, the normal function and the service life are not influenced, the gas discharged from the breathing end of the breathing machine does not pollute the environment and the ecology, and residual trace hydrogen peroxide and hydroxyl free ions are completely harmless to the human body and can be discharged safely and carelessly.

In this embodiment, as shown in fig. 1-3, the internal disinfection system of a ventilator using the ultraviolet photocatalyst principle further includes a control system 15, the control system 15 includes a power supply, a timer, a display and a controller, the timer, the display and the ultraviolet lamp 4 are all connected with the controller, and the power supply supplies power to other electronic components;

the controller can select a single chip microcomputer chip with the model of STC12C5A60S2, the control system can preset the time for controlling the disinfection, and can also automatically shut down, and the display can display the disinfected time.

In some embodiments, as shown in fig. 5, the ultraviolet lamp 4 is connected to the housing 1 through an ultraviolet lamp fixing support 9, and the ultraviolet lamp fixing support 9 includes at least two fixing rings sleeved on the outer side wall of the ultraviolet lamp 4 and a connecting rod connecting the fixing rings and the inner side wall of the housing 1.

Wherein, fixed ring and connecting rod fixed connection, connecting rod and anti high-pressure metal gas storehouse fixed connection.

In some embodiments, as shown in fig. 5, at least two hollow fiber tube porous structure supporting frames 10 are sleeved on the outer side wall of the hollow fiber tube porous structure 5, and through holes for the connecting rods to pass through are formed on the hollow fiber tube porous structure supporting frames 10.

The connection relationship between the devices in the drawings of the present invention is for clearly explaining the need of information interaction and control process, and therefore should be regarded as a logical connection relationship, and should not be limited to physical connection only; the present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. The utility model provides an use inside disinfection system of breathing machine of ultraviolet ray photocatalyst principle, a serial communication port, the inside disinfection system of breathing machine of application ultraviolet ray photocatalyst principle includes shell (1), be equipped with ultraviolet lamp (4) and cover in shell (1) and locate the hollow fiber pipe porous structure (5) in ultraviolet lamp (4) outside, the surface and shell inner wall (7) of hollow fiber pipe porous structure (5) are equipped with mixed metal photocatalyst coating (8) of a plurality of kinds, the internal surface of hollow fiber pipe porous structure (5) is equipped with titanium dioxide photocatalyst coating (6).

2. The system for disinfecting the inside of a respirator, which applies the ultraviolet photocatalyst principle, as recited in claim 1, is characterized in that the housing (1) is communicated with a high-pressure oxygen/air output pipeline (13) through a high-pressure oxygen/air output port (3).

3. The internal sterilizing system of ventilator using ultraviolet photocatalyst principle as claimed in claim 1, wherein said housing (1) is connected with a high pressure oxygen/air input pipe (12) through a high pressure oxygen/air input port (2), the other end of said high pressure oxygen/air input pipe (12) is connected with a hospital central oxygen supply/air supply (11), said ultraviolet lamp (4) emits 254nm ultraviolet ray.

4. The internal disinfection system of a respirator applying the ultraviolet photocatalyst principle as claimed in claim 1, further comprising a control system (15), wherein the control system (15) comprises a power supply, a timer, a display and a controller, the timer, the display and the ultraviolet lamp (4) are all connected with the controller, and the power supply supplies power to all electronic components.

5. The internal sterilizing system of ventilator using ultraviolet photocatalyst principle as defined in claim 1, wherein said ultraviolet lamp (4) is connected to said housing (1) through an ultraviolet lamp fixing support frame (9), said ultraviolet lamp fixing support frame (9) comprises at least two fixing rings sleeved on the outer side wall of said ultraviolet lamp (4) and a connecting rod connecting said fixing rings and the inner side wall of said housing (1).

6. The system for disinfecting the inside of a respirator applying the ultraviolet photocatalyst principle as claimed in claim 5, wherein at least two hollow fiber tube porous structure support frames (10) are sleeved on the outer side wall of the hollow fiber tube porous structure (5), and through holes for the connecting rods to pass through are formed in the hollow fiber tube porous structure support frames (10).

7. The internal disinfection system of a respirator applying the ultraviolet photocatalyst principle as claimed in claim 1, wherein the housing (1) is a high pressure resistant metal gas chamber.