CN115429922B

CN115429922B - Rapid and thorough hydrogen peroxide disinfection and sterilization device and method

Info

Publication number: CN115429922B
Application number: CN202211373676.6A
Authority: CN
Inventors: 吴金生; 聂洪林; 朱磊; 杨煬; 任静
Original assignee: Sichuan Kaiweiyin Medical Technology Co ltd
Current assignee: Sichuan Kaiweiyin Medical Technology Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2022-12-30
Anticipated expiration: 2042-11-04
Also published as: CN115429922A

Abstract

The invention discloses a rapid and thorough hydrogen peroxide disinfection and sterilization device and a method, relating to the technical field of inner and outer wall sterilization of endoscopes and comprising an outer instrument box, an inner instrument box, a hot air blower, a vacuum pump and a hydrogen peroxide purification device which are fixedly arranged in a cabinet, wherein the inner instrument box is arranged in the outer instrument box; a first valve and a second valve are arranged in the left cavity, one port of the first valve is communicated with the middle cavity, the other port of the first valve is connected with a pipeline I, the other end of the pipeline I sequentially penetrates through the bottom wall of the inner instrument box and the bottom wall of the outer instrument box, and the extension end of the pipeline I is connected with a working port of the air heater; a backflow valve, a back pressure valve and a two-position three-way backflow valve are arranged in the right chamber, and an insertion pipe extending into the middle chamber is connected to the outlet end of the two-position three-way backflow valve. The invention has the beneficial effects that: compact structure, greatly improve sterilization efficiency.

Description

Rapid and thorough hydrogen peroxide disinfection and sterilization device and method

Technical Field

The invention relates to the technical field of sterilization of inner and outer walls of endoscopes, in particular to a rapid and thorough hydrogen peroxide sterilization device and a method.

Background

Currently, endoscopy has become an indispensable means for diagnosis and treatment of digestive system complications. As an instrument invading into the human body cavity, the endoscope greatly increases the chance of iatrogenic infection once the defense barrier of the human body is destroyed during operation because of the complex structure and the special material, which is not easy to meet the requirement of complete sterilization. When the endoscope is used once, the endoscope needs to be sterilized so as to ensure that the endoscope can be used continuously.

The disinfection mode adopted by the endoscope center in hospital at the present stage is a disinfection solution soaking mode, namely, an endoscope to be disinfected is directly soaked in a box body containing the disinfection solution, although the disinfection method can be used for disinfection, the method only sterilizes the endoscope with short length and large caliber of the lumen, because the disinfection solution can penetrate through the lumen opening of the endoscope and enter the inner hole of the endoscope, the inner wall of the endoscope can be disinfected, and the disinfection solution can not sterilize the inner diameter of the endoscope which is long and thin and has small caliber of the lumen, because the disinfection solution can smoothly penetrate through the lumen of the endoscope and enter the inner hole of the endoscope, the inner wall of the endoscope can be sterilized, and the method has the technical defect of narrow application range. In addition, the sterilizing liquid is not fluid, so that it takes a long time to soak for sterilization, which is undoubtedly a great reduction in sterilization efficiency, and in addition, there is a technical drawback of incomplete sterilization. Therefore, a disinfection and sterilization device and method with greatly improved sterilization efficiency, more thorough sterilization and wide application range are needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a hydrogen peroxide disinfection and sterilization device and a hydrogen peroxide disinfection and sterilization method which have the advantages of compact structure, greatly improved sterilization efficiency, more thorough sterilization and wide application range.

The purpose of the invention is realized by the following technical scheme: a rapid and thorough hydrogen peroxide disinfection and sterilization device comprises an outer instrument box, an inner instrument box, a hot air blower, a vacuum pump and a hydrogen peroxide purification device which are fixedly arranged in a cabinet, wherein the inner instrument box is arranged in the outer instrument box;

a first valve and a second valve are arranged in the left chamber, one port of the first valve is communicated with the middle chamber, the other port of the first valve is connected with a pipeline I, the other end of the pipeline I sequentially penetrates through the bottom wall of the inner instrument box and the bottom wall of the outer instrument box, and the extending end of the pipeline I is connected with a working port of the hot air blower; one port of the second valve is communicated with the middle cavity, the other port of the second valve is connected with a pipeline II, the other end of the pipeline II sequentially penetrates through the bottom wall of the inner instrument box and the bottom wall of the outer instrument box, and the extension end of the pipeline II is connected with the working port of the vacuum pump;

a reflux valve, a back pressure valve and a two-position three-way reflux valve are arranged in the right cavity, an insertion pipe extending into the middle cavity is connected to the outlet end of the two-position three-way reflux valve, two inlet ends of the two-position three-way reflux valve are arranged in the right cavity, one ports of the reflux valve and the back pressure valve are communicated with the middle cavity, a pipeline V is connected to the other port of the reflux valve, the other port of the pipeline V penetrates through the bottom wall of the inner instrument box and is connected with one port of the circulating pump, a pipeline IV is connected to the other port of the circulating pump, the pipeline IV penetrates through the bottom wall of the inner instrument box and is connected with one inlet end of the two-position three-way reflux valve, the other inlet end of the three-way reflux valve is connected with a pipeline III, the pipeline III penetrates through the bottom wall of the inner instrument box and is connected with the valve body, the other port of the valve body is communicated with the hydrogen peroxide purification device, a third valve communicated with the hydrogen peroxide purification device is also connected with the two-position three-way reflux valve, and the other port of the third valve is communicated with a pipeline II;

and a buffer flow guide device is arranged in the middle cavity.

And a liquid injection system is further arranged in the cabinet, the outlet end of the liquid injection system is connected with a liquid injection valve, and the other port of the liquid injection valve is communicated with the hydrogen peroxide purification device.

The hydrogen peroxide purification device is a closed container.

The bottom of the machine cabinet is fixedly provided with a plurality of supporting legs supported on the workbench.

The buffering flow guide device is an arc-shaped plate which is inclined leftwards and downwards.

The circulating pump is arranged in the outer instrument box.

And the exhaust port of the vacuum pump is also connected with a hydrogen peroxide analysis device.

The disinfection and sterilization device also comprises a controller, wherein the controller is electrically connected with the first valve, the second valve, the third valve, the valve body, the two-position three-way reflux valve, the circulating pump, the vacuum pump and the hot air blower through signal wires.

A method for rapid and complete hydrogen peroxide sterilization comprising the steps of:

s1, firstly, a worker detaches a box cover on the outer portion of an inner instrument box of a cover box, then places an endoscope to be sterilized into a middle cavity, sleeves a head port of the endoscope on an insertion tube, ensures that a pipeline portion of the endoscope is positioned on the left side of a buffering flow guide device, and finally, the worker covers the box cover on the inner instrument box again, so that the installation of the endoscope to be sterilized is realized; opening a liquid injection valve and a liquid injection system, injecting hydrogen peroxide liquid into the hydrogen peroxide purification device by the liquid injection system, and controlling the liquid injection valve and the liquid injection system to be closed after injection;

s2, a worker controls the first valve and the back pressure valve to be opened through the controller, then controls the hot air blower to be started, the hot air blower conveys clean hot air, and the clean hot air enters the middle cavity of the inner instrument box through the pipeline I and the first valve in sequence and finally, so that drying and heating of the endoscope are achieved;

s3, after drying for a period of time, closing the first valve and the back pressure valve, controlling the second valve to be opened by a worker through the controller, then controlling the vacuum pump to be started by the worker, vacuumizing the pipeline II and the middle chamber by the vacuum pump, controlling the third valve to be started by the worker in the vacuumizing process, gasifying the hydrogen peroxide liquid in the hydrogen peroxide purification device, and controlling the third valve to be closed after gasifying for a period of time;

s4, primarily sterilizing the endoscope, wherein when the pressure in the middle cavity is pumped to 100 to 200pa, the controller controls the vacuum pump to be closed, then the two-position three-way reflux valve is controlled to be started, hydrogen peroxide gas in the hydrogen peroxide purification device sequentially passes through the valve body, the pipeline III, an inlet end of the two-position three-way reflux valve, the insertion pipe, a head port of the endoscope and a pipeline part of the endoscope under negative pressure, and is finally discharged into the middle cavity from a tail end port of the endoscope, the hydrogen peroxide gas discharged from the tail end port is blocked by the buffering flow guide device and then flows back to form a set of airflow leading from the right to the left, and the hydrogen peroxide gas fully wraps the outer surface of the endoscope, so that the primary sterilization of the endoscope is realized;

s5, secondary sterilization of the endoscope is carried out, after primary sterilization is carried out for a period of time, workers control the valve body to be closed, then open the reflux valve, and simultaneously change the direction of the two-position three-way reflux valve, at the moment, the other inlet end of the two-position three-way reflux valve is communicated with the middle chamber, then the workers control the circulating pump to be started, under the pumping action of the circulating pump, hydrogen peroxide gas in the middle chamber sequentially passes through the reflux valve, the pipeline V, the circulating pump, the pipeline IV, the two-position three-way reflux valve, the insertion pipe, the head port of the endoscope and the pipeline part of the endoscope, and is finally discharged into the middle chamber from the tail port of the endoscope, so that the hydrogen peroxide gas flows among the endoscope, the circulating pump, the pipeline IV and the pipeline V, secondary perfusion is realized, and secondary sterilization of the endoscope is realized;

s6, continuously perfusing with the continuous work of the circulating pump to thoroughly sterilize the endoscope;

s7, after sterilization is finished, workers control the backflow valve and the circulating pump to be closed, then the workers control the second valve to be started, then the workers control the vacuum pump to be started again, the vacuum pump pumps away residual hydrogen peroxide gas in the middle cavity, and the pumped hydrogen peroxide gas is decomposed and absorbed by the hydrogen peroxide analysis device;

s8, after the residual hydrogen peroxide gas is pumped and exhausted, a worker controls the vacuum pump to be closed, then opens the back pressure valve, and introduces clean air into the middle cavity through the back pressure valve so as to enable the inner instrument box to form normal pressure;

s9, when the disinfected and sterilized endoscope is to be used, a worker opens the box cover, then pulls out the first port of the endoscope from the insertion tube, and finally takes out the endoscope from the middle cavity, so that the disinfected and sterilized endoscope can be used for the second time.

The invention has the following advantages: compact structure, greatly improve sterilization efficiency, sterilize more thoroughly, application scope is wide.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

figure 2 is a schematic view of an installed endoscope;

in the figure, 1-cabinet, 2-outer instrument box, 3-inner instrument box, 4-hot air blower, 5-vacuum pump, 6-hydrogen peroxide purification device, 7-partition plate, 8-left chamber, 9-middle chamber, 10-right chamber, 11-first valve, 12-second valve, 13-pipeline I, 14-pipeline II, 15-reflux valve, 16-back pressure valve, 17-two-position three-way reflux valve, 18-intubation tube, 19-pipeline V, 20-pipeline IV, 21-pipeline III, 22-valve body, 23-third valve, 24-buffer diversion device, 25-liquid injection system, 26-liquid injection valve, 27-peroxidation analysis device, 28-circulating pump and 29-inner endoscope.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 1, a rapid and thorough hydrogen peroxide disinfection and sterilization device comprises an outer instrument box 2, an inner instrument box 3, a hot air blower 4, a vacuum pump 5 and a hydrogen peroxide purification device 6 which are fixedly arranged in a cabinet 1, wherein the hydrogen peroxide purification device 6 is a closed container, the inner instrument box 3 is arranged in the outer instrument box 2, the outer cover of the inner instrument box 3 is provided with a box cover, two clapboards 7 are fixedly arranged in the inner instrument box 3, and the two clapboards 7 divide the inner cavity of the inner instrument box 3 into a left cavity 8, a middle cavity 9 and a right cavity 10; a hydrogen peroxide analysis device 27 is also connected to the exhaust port of the vacuum pump 5.

A first valve 11 and a second valve 12 are arranged in the left chamber 8, one port of the first valve 11 is communicated with the middle chamber 9, the other port is connected with a pipeline I13, the other end of the pipeline I13 sequentially penetrates through the bottom wall of the inner instrument box 3 and the bottom wall of the outer instrument box 2, and the extension end of the pipeline I13 is connected with the working port of the hot air blower 4; a port and the middle cavity 9 intercommunication of second valve 12, another port department is connected with pipeline II14, and the diapire of interior apparatus box 3, the diapire setting of outer apparatus box 2 are run through in order to the other end of pipeline II14, and extend the end and be connected with vacuum pump 5's work port.

Be provided with return valve 15, backpressure valve 16 and two-position three-way return valve 17 in the right side cavity 10, the exit end department of two-position three-way return valve 17 is connected with the intubate 18 that stretches into in middle cavity 9, two entry ends of two-position three-way return valve 17 all set up in right side cavity 10, return valve 15 and one port of backpressure valve 16 all communicate with middle cavity 9, another port department of return valve 15 is connected with pipeline V19, another port department of pipeline V19 runs through the diapire of interior apparatus box 3 and is connected with a port of circulating pump 28, circulating pump 28 sets up in outer apparatus box 2, another port department of circulating pump 28 is connected with pipeline IV20, pipeline IV20 runs through the diapire of interior apparatus box 3 and is connected with an entry end two-position of three-way return valve 17, another entry end of two-position three-way return valve 17 is connected with pipeline III21, pipeline III21 runs through the diapire of interior apparatus box 3 and is connected with valve body 22, another port of valve body 22 communicates with hydrogen peroxide purification device 6, still be connected with the third valve 23 rather than communicating on the hydrogen peroxide purification device 6, another port and pipeline II14 intercommunication of third valve 23.

Be provided with buffering guiding device 24 in the middle cavity 9, buffering guiding device 24 is the arc that sets up downwards to the left bank, the bottom of rack 1 has set firmly many supporting legs that support on the workstation, still be provided with in the rack 1 and annotate liquid system 25, the exit end of annotating liquid system 25 is connected with annotates liquid valve 26, and another port of annotating liquid valve 26 communicates with hydrogen peroxide purification device 6.

The disinfection and sterilization device further comprises a controller, the controller adopts porphyry ADAM-5510, the controller is electrically connected with the first valve 11, the second valve 12, the third valve 23, the valve body 22, the two-position three-way return valve 17, the return valve 15, the circulating pump 28, the vacuum pump 5 and the hot air blower 4 through signal wires, and the controller can control the starting or closing of the first valve 11, the second valve 12, the third valve 23, the valve body 22, the two-position three-way return valve 17, the return valve 15, the circulating pump 28, the vacuum pump 5 and the hot air blower 4, so that the operation is greatly facilitated, and the disinfection and sterilization device has the characteristic of high automation degree.

s1, firstly detaching a cover box outside an inner instrument box 3, then placing an endoscope 29 to be sterilized into a middle chamber 9, sleeving a head port of the endoscope 29 on an insertion tube 18, ensuring that a pipeline part of the endoscope 29 is positioned at the left side of a buffer flow guide device 24, and finally covering the cover box on the inner instrument box 3 again, so that the installation of the endoscope 29 to be sterilized is realized, as shown in figure 2; opening the liquid injection valve 26 and the liquid injection system 25, injecting hydrogen peroxide liquid into the hydrogen peroxide purification device 6 by the liquid injection system 25, and controlling the liquid injection valve 26 and the liquid injection system 25 to be closed after injection;

s2, the first valve 11 and the back pressure valve 16 are controlled to be opened through the controller, then the hot air blower 4 is controlled to be started, clean hot air is conveyed out by the hot air blower 4, and the clean hot air finally enters the middle cavity 9 of the inner instrument box 3 through the pipeline I13 and the first valve 11 in sequence, so that the drying and heating of the endoscope 29 are realized;

s3, after drying for a period of time, closing the first valve 11 and the back pressure valve 16, then controlling the second valve 12 to open through the controller, then controlling the vacuum pump 5 to start, vacuumizing the pipeline II14 and the middle chamber 9 by the vacuum pump 5, controlling the third valve 23 to start in the vacuumizing process, gasifying the hydrogen peroxide liquid in the hydrogen peroxide purification device 6, and controlling the third valve 23 to close after gasifying for a period of time;

s4, primarily sterilizing the endoscope, wherein when the pressure in the middle chamber 9 is pumped to 100-200pa, the controller controls the vacuum pump 5 to be closed, then the two-position three-way return valve 17 is controlled to be started, hydrogen peroxide gas in the hydrogen peroxide purification device 6 sequentially passes through the valve body 22, the pipeline III21, one inlet end of the two-position three-way return valve 17, the insertion tube 18, the head port of the endoscope 29 and the pipeline part of the endoscope 29 under negative pressure, and is finally discharged into the middle chamber 9 from the tail end port of the endoscope 29, the hydrogen peroxide gas discharged from the tail end port is blocked by the buffering flow guide device 24 and then flows back, the backflow direction is shown by an arrow in figure 2, a set of air flow from right to left is formed to lead to the outer surface of the endoscope 29, and the hydrogen peroxide gas fully wraps the outer surface of the endoscope 29, so that the primary sterilization of the endoscope 29 is realized;

in step S4, the intermediate chamber 9 is in a negative pressure state, hydrogen peroxide gas molecules are injected into the lumen of the endoscope 29, and the hydrogen peroxide gas is rapidly diffused into the inner hole of the endoscope 29, so that the inner and outer surfaces of the endoscope 29 are fully wrapped by the hydrogen peroxide molecules, and in addition, the buffering and flow-guiding device 24 makes the hydrogen peroxide gas flow diffused from the tail port of the endoscope 29 form a backflow, so that the hydrogen peroxide molecules are diffused to all dead corners, corners and other places which are difficult to be sterilized, and further the hydrogen peroxide gas is fully wrapped on the outer surface of the endoscope 29, thereby enabling sterilization to be more thorough.

S5, secondary sterilization of the endoscope is carried out, after primary sterilization is carried out for a period of time, the valve body 22 is controlled to be closed, the reflux valve 15 is opened, the two-position three-way reflux valve 17 is reversed, the other inlet end of the two-position three-way reflux valve 17 is communicated with the middle chamber 9, then the circulating pump 28 is controlled to be started, hydrogen peroxide gas in the middle chamber 9 is discharged into the middle chamber 9 from the tail end port of the endoscope 29 under the pumping action of the circulating pump 28 through the reflux valve 15, the pipeline V19, the circulating pump 28, the pipeline IV20, the two-position three-way reflux valve 17, the insertion tube 18, the head port of the endoscope 29 and the pipeline part of the endoscope 29 in sequence, so that the hydrogen peroxide gas flows among the endoscope 29, the circulating pump 28, the pipeline IV20 and the pipeline V19, secondary perfusion is realized, and the secondary sterilization of the endoscope 29 is realized;

in step S5, hydrogen peroxide gas flows back and forth on the inner and outer surfaces of the endoscope 29 by the action of the circulation pump 28, which greatly shortens the sterilization time and further greatly improves the sterilization efficiency of the endoscope 29 compared with the conventional immersion sterilization method. In addition, only need to change the size of intubate 18, can realize the installation to the scope 29 of different models to the realization is to the disinfection and isolation of the scope 29 of different models, therefore this disinfection and isolation device has the wider technical characterstic of application scope.

S6, continuously perfusing with the continuous work of the circulating pump 28 to thoroughly sterilize the endoscope 29;

s7, after the sterilization is finished, controlling the backflow valve 15 and the circulating pump 28 to be closed, then controlling the second valve 12 to be started, then controlling the vacuum pump 5 to be started again, pumping away residual hydrogen peroxide gas in the intermediate chamber 9 by the vacuum pump 5, and decomposing and absorbing the pumped hydrogen peroxide gas by the hydrogen peroxide analysis device 27;

s8, after the residual hydrogen peroxide gas is pumped out, controlling the vacuum pump 5 to be closed, then opening the back pressure valve 16, and introducing clean air into the middle chamber 9 through the back pressure valve 16 to enable the inner instrument box 3 to form normal pressure;

s9, when the sterilized endoscope 29 is to be used, the box cover is opened, the head end opening of the endoscope 29 is pulled out from the insertion tube 18, and finally the endoscope 29 is taken out from the middle cavity 9, so that the sterilized endoscope 29 can be used for the second time.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid and thorough hydrogen peroxide disinfection and sterilization device is characterized in that: the hydrogen peroxide purifying device comprises an outer instrument box (2), an inner instrument box (3), a hot air blower (4), a vacuum pump (5) and a hydrogen peroxide purifying device (6) which are fixedly arranged in a cabinet (1), wherein the inner instrument box (3) is arranged in the outer instrument box (2), a box cover is covered outside the inner instrument box (3), two clapboards (7) are fixedly arranged in the inner instrument box (3), and the inner cavity of the inner instrument box (3) is divided into a left cavity (8), a middle cavity (9) and a right cavity (10) by the two clapboards (7);

a first valve (11) and a second valve (12) are arranged in the left chamber (8), one port of the first valve (11) is communicated with the middle chamber (9), the other port is connected with a pipeline I (13), the other end of the pipeline I (13) sequentially penetrates through the bottom wall of the inner instrument box (3) and the bottom wall of the outer instrument box (2) and is connected with the working port of the hot air blower (4); one port of the second valve (12) is communicated with the middle chamber (9), the other port is connected with a pipeline II (14), the other end of the pipeline II (14) sequentially penetrates through the bottom wall of the inner instrument box (3) and the bottom wall of the outer instrument box (2) to be arranged, and the extension end of the pipeline II is connected with a working port of the vacuum pump (5);

a return valve (15), a back-pressure valve (16) and a two-position three-way return valve (17) are arranged in the right chamber (10), an insertion pipe (18) extending into the middle chamber (9) is connected at the outlet end of the two-position three-way return valve (17), two inlet ends of the two-position three-way return valve (17) are arranged in the right chamber (10), one end opening of the reflux valve (15) and one end opening of the back pressure valve (16) are communicated with the middle chamber (9), the other end opening of the reflux valve (15) is connected with a pipeline V (19), the other end opening of the pipeline V (19) penetrates through the bottom wall of the inner instrument box (3) and is connected with one end opening of a circulating pump (28), the other end opening of the circulating pump (28) is connected with a pipeline IV (20), the pipeline IV (20) penetrates through the bottom wall of the inner instrument box (3) and is connected with one inlet end of a two-position three-way reflux valve (17), the other inlet end of the two-position three-way reflux valve (17) is connected with a pipeline III (21), the pipeline III (21) penetrates through the bottom wall of the inner instrument box (3) and is connected with a valve body (22), the other end opening of the valve body (22) is communicated with a hydrogen peroxide purification device (6), the hydrogen peroxide purification device (6) is also connected with a third valve (23) communicated with the hydrogen peroxide purification device, and the other end opening of the third valve (23) is communicated with a pipeline II (14);

and a buffer flow guide device (24) is arranged in the middle chamber (9).

2. A rapid and complete hydrogen peroxide sterilization apparatus according to claim 1, wherein: still be provided with in rack (1) and annotate liquid system (25), the exit end of annotating liquid system (25) is connected with notes liquid valve (26), and another port and the hydrogen peroxide purification device (6) of notes liquid valve (26) communicate.

3. A rapid and thorough hydrogen peroxide sterilization apparatus according to claim 1, wherein: the hydrogen peroxide purification device (6) is a closed container.

4. A rapid and thorough hydrogen peroxide sterilization apparatus according to claim 1, wherein: the bottom of the machine cabinet (1) is fixedly provided with a plurality of supporting legs supported on the workbench.

5. A rapid and complete hydrogen peroxide sterilization apparatus according to claim 1, wherein: the buffering and flow guiding device (24) is an arc-shaped plate which is inclined leftwards and downwards.

6. A rapid and thorough hydrogen peroxide sterilization apparatus according to claim 1, wherein: the circulating pump (28) is arranged in the outer instrument box (2).

7. A rapid and complete hydrogen peroxide sterilization apparatus according to claim 1, wherein: and the exhaust port of the vacuum pump (5) is also connected with a hydrogen peroxide analysis device (27).

8. A rapid and complete hydrogen peroxide sterilization apparatus according to claim 1, wherein: the disinfection and sterilization device further comprises a controller, wherein the controller is electrically connected with the first valve (11), the second valve (12), the third valve (23), the valve body (22), the two-position three-way backflow valve (17), the backflow valve (15), the circulating pump (28), the vacuum pump (5) and the hot air blower (4) through signal wires.

9. A rapid and thorough hydrogen peroxide disinfection and sterilization method, which adopts the rapid and thorough hydrogen peroxide disinfection and sterilization device as claimed in any one of claims 1 to 8, and is characterized in that: the method comprises the following steps:

s1, firstly, disassembling a box cover of a cover box outside an inner instrument box (3), then placing an endoscope (29) to be sterilized into a middle chamber (9), sleeving a head port of the endoscope (29) on an insertion tube (18), ensuring that a pipeline part of the endoscope (29) is positioned on the left side of a buffer flow guide device (24), and finally covering the box cover on the inner instrument box (3) again, thereby realizing the installation of the endoscope (29) to be sterilized; opening a liquid injection valve (26) and a liquid injection system (25), injecting hydrogen peroxide liquid into the hydrogen peroxide purification device (6) by the liquid injection system (25), and controlling the liquid injection valve (26) and the liquid injection system (25) to be closed after injection;

s2, the first valve (11) and the back pressure valve (16) are controlled to be opened through the controller, then the hot air blower (4) is controlled to be started, clean hot air is conveyed out by the hot air blower (4), and finally enters the middle chamber (9) of the inner instrument box (3) through the pipeline I (13) and the first valve (11) in sequence, so that the inner instrument (29) is dried and heated;

s3, after drying for a period of time, closing the first valve (11) and the back pressure valve (16), then controlling the second valve (12) to open through the controller, then controlling the vacuum pump (5) to start, vacuumizing the pipeline II (14) and the middle chamber (9) through the vacuum pump (5), controlling the third valve (23) to start in the vacuumizing process, gasifying the hydrogen peroxide liquid in the hydrogen peroxide purification device (6), and controlling the third valve (23) to close after gasifying for a period of time;

s4, primarily sterilizing the endoscope, wherein when the pressure in the middle chamber (9) is pumped to 100-200pa, the controller controls the vacuum pump (5) to be closed, then controls the two-position three-way reflux valve (17) to be started, hydrogen peroxide gas in the hydrogen peroxide purification device (6) sequentially passes through the valve body (22), the pipeline III (21), one inlet end of the two-position three-way reflux valve (17), the insertion tube (18), the head port of the endoscope (29) and the pipeline part of the endoscope (29) under negative pressure, is finally discharged into the middle chamber (9) from the tail end port of the endoscope (29), the hydrogen peroxide gas discharged from the tail end port is blocked by the buffering flow guide device (24) and then flows back to form a set of air flow leading from the right to the left, and the hydrogen peroxide gas fully wraps the outer surface of the endoscope (29), so that the primary sterilization of the endoscope (29) is realized;

s5, secondary sterilization of the endoscope is carried out, after primary sterilization is carried out for a period of time, the valve body (22) is controlled to be closed, then the backflow valve (15) is opened, the two-position three-way backflow valve (17) is reversed, at the moment, the other inlet end of the two-position three-way backflow valve (17) is communicated with the middle chamber (9), then the circulating pump (28) is controlled to be started, under the suction effect of the circulating pump (28), hydrogen peroxide gas in the middle chamber (9) is discharged into the middle chamber (9) from the tail end port of the endoscope (29) through the backflow valve (15), the pipeline V (19), the circulating pump (28), the pipeline IV (20), the two-position three-way backflow valve (17), the insertion tube (18), the head port of the endoscope (29) and the pipeline part of the endoscope (29) in sequence, so that the hydrogen peroxide gas flows among the endoscope (29), the circulating pump (28), the pipeline IV (20) and the pipeline V (19), secondary perfusion to the endoscope (29) is achieved;

s6, continuously perfusing with the continuous work of the circulating pump (28) to ensure that the endoscope (29) is thoroughly sterilized;

s7, after sterilization is finished, controlling the backflow valve (15) and the circulating pump (28) to be closed, then controlling the second valve (12) to be started, then controlling the vacuum pump (5) to be started again, pumping away residual hydrogen peroxide gas in the middle chamber (9) by the vacuum pump (5), and decomposing and absorbing the pumped hydrogen peroxide gas by the hydrogen peroxide analysis device (27);

s8, after the residual hydrogen peroxide gas is pumped out, controlling the vacuum pump (5) to be closed, then opening the back pressure valve (16), and introducing clean air into the middle chamber (9) through the back pressure valve (16) so as to enable the inner instrument box (3) to form normal pressure;

s9, when the sterilized endoscope (29) is to be used, the box cover is opened, then the first port of the endoscope (29) is pulled out from the insertion tube (18), and finally the endoscope (29) is taken out from the middle cavity (9), so that the sterilized endoscope (29) can be used for the second time.