KR20020036795A - apparatus for washing endoscope and method for it - Google Patents

Abstract

PURPOSE: An endoscope washing apparatus and a method thereof are provided to reliably wash the long endoscope with little cleaning space and little cleanser. CONSTITUTION: An endoscope washing apparatus comprises a case(10) having an inserting mouth(13) and an ejection exit, and a washing device(11) having a washing tube(12), a panel, a switch and a display lamp. The first end(12a) of the washing tube(12) is connected to the inserting mouth(13) and the second end(12b) of the washing tube(12) is connected to the ejection exit. The washing tube(12) is also connected to a bypass flow path. The bypass flow path includes an external pipe(50a) and a pump inside the external pipe(50a). Cleanser is forced to circulate toward the second end(12b) by the bypass flow path. The washing tube(12) is also connected to a bubble generator and a vibrator(52) for increasing washing efficiency.

Description

Endoscopic cleaning apparatus and method {apparatus for washing endoscope and method for it}

TECHNICAL FIELD The present invention relates to an endoscope cleaning apparatus and method for cleaning after use an endoscope that is inserted into a living body and used for diagnosing or treating an organ or collecting a sample.

5 shows an example of an endoscope. The endoscope 1 includes an insertion part 2 having a long plasticity for insertion into the body, an operation part 3 provided at an end of the insertion part 2, a universal cord 4 extending from the operation part 3, It includes a connector portion 5 provided at the end of the universal cord (4). At the distal end of the insertion section 2, an illumination window, an observation window, a suction or an air inlet, a water outlet, or the like is installed, and each window and the opening are each connected to a lead or through hole provided inside the insertion section 2 and the universal cord 4. It is led to the said operation part 3 and the connector part 5, and is connected to the suction button 6, the air supply / water supply button 7, or the suction port connector 8, the air supply / water supply connection part 9, etc. Therefore, the insertion part 2 is inserted into a living body and the necessary operation is performed by the operation part 3, and an organ diagnosis, a treatment, a sample collection, etc. are performed.

Since such endoscopes are commonly used for a plurality of patients, they must be thoroughly cleaned and disinfected after use, and 100% of hepatitis such as bacteria having the endoscope as their mother must be prevented. To this end, various cleaning means for cleaning the endoscope have been proposed.

For example, Japanese Patent Application Laid-Open No. 11-226092 shows that an endoscope with a long length is accommodated in a washing bath filled with a cleaning liquid in a rounded state, and the endoscope is cleaned while circulating the cleaning liquid in a bath. However, the method of cleaning by immersing the endoscope in the cleaning liquid accumulated in the large volume of the cleaning bath requires a large amount of the cleaning liquid, is expensive to run, and also poor in cleaning efficiency and takes time to clean. In addition, a lot of space is required for cleaning.

On the other hand, Japanese Patent Application Laid-Open No. 11-19025 discloses a groove having a vortex in a predetermined slope on the upper surface of the upper plate of the cleaning device, and bending the endoscope into a vortex in the inside of the groove, and inserting the inside of the groove inside the groove. An apparatus for cleaning by flowing a cleaning liquid is shown. According to this apparatus, the endoscope can be washed with a smaller amount of cleaning liquid than the above known example. However, it is impossible to completely clean the endoscope only by simply bringing the endoscope into contact with a cleaning liquid flowing down the inside of the groove along the slope, and the cleaning efficiency is poor. In addition, the method of forming a vortex groove on the upper surface of the upper surface of the cleaning apparatus requires a large planar space, and the installation is enlarged. Also, in the portion near the vortex center, the endoscope must be bent inside a groove by bending a small radius of curvature. Because of this, it is easy to apply excessive force to the endoscope.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a cleaning means that can reliably clean a long endoscope with a small cleaning space and a small amount of cleaning liquid, and is economical and has excellent cleaning effect. .

The following drawings attached to this specification are illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to

1 is a perspective view showing an embodiment of the endoscope cleaning apparatus according to the present invention.

FIG. 2 is a side view of the side cover of the cleaning apparatus of FIG. 1 peeled off. FIG.

3 is a block diagram of the whole cleaning apparatus according to the present invention.

4 is an enlarged perspective view of a portion of the upper surface of the cleaning device of FIG. 1.

5 is a perspective view showing an example of an endoscope.

<Explanation of symbols for the main parts of the drawings>

1 .. Endoscope 2 .. Insertion section 10. Casing

11.Cleaning Agency 12.Cleaning Commissioner 12a.

12b. 2nd stage 20. Drain 22. Valve

23. Pump 26. Water inlet 28. Cleaning fluid supply mechanism

50. Bypass flow 50a. Pipeline 50b. Pump

51. Bubble means 52. Vibrator 55. Passage

57 .. Air cleaning means

According to the present invention for solving the above problems, the casing having an insertion hole for inserting the endoscope at the top and having a drain hole opened and closed by a valve at the bottom, and formed by bending the plastic tube in a loop state. The loop is installed inside the casing in a vertical state so that the first end is connected to the endoscope insertion hole, and the second end on the opposite side is connected to the drain port, and a cleaning liquid supply for supplying a cleaning liquid into the cleaning tube. A mechanism, an outer conduit in which the first end side and the second end side of the cleaning conduit are combined, and a pump provided in the outer conduit, and the cleaning liquid in the cleaning conduit from the first end side to the second end side through the outer conduit and the pump And a bypass flow path for generating a circulation flow of the cleaning liquid from the second end side in the cleaning tube to the first end side in the cleaning tube and the drain pump connected to the drain port via the valve. An endoscope washing apparatus is provided.

The cleaning apparatus of the present invention having the above-described configuration inserts the main body insertion portion of the endoscope along the loop from the insertion port side into the cleaning tube, and supplies the cleaning liquid to the inside of the cleaning tube, and passes the cleaning liquid into the bypass flow path. By forcibly circulating from the first end side to the second end side, the circulating flow of the cleaning liquid is generated from the second end side in the cleaning tube toward the first end side, thereby cleaning the endoscope. At this time, the flow rate of the circulating washing liquid is fast and agitated to become a turbulent state, so that the endoscope is surely cleaned by contacting the washing liquid. In addition, by using a cleaning tube curved in a loop state, it is possible to reliably clean a long endoscope with a small cleaning space and a small amount of cleaning liquid, which is very economical and excellent in cleaning effect.

In the present invention, preferably, bubble generating means for blowing bubbles into the cleaning liquid inside the cleaning tube may be connected to a position at the second end side of the cleaning tube. It is also possible to connect a vibrator for vibrating the cleaning tube to an intermediate portion of the cleaning tube.

According to another preferred embodiment of the present invention, the pipe parts intersecting the both sides of the cleaning pipe curved in a loop state are communicated with each other through a small diameter passage at the lower end of the loop.

According to a specific embodiment of the present invention, the cleaning tube has a water supply port for a cleaning liquid at an end of the second end side, the cleaning liquid supply mechanism is connected to the water supply port, and the cleaning liquid supply mechanism is tap water and brine. Alkaline and acid products obtained by the electrolysis of the metal can be selectively supplied.

Preferably, the cleaning apparatus of the present invention has internal through-cleaning means for circulating the cleaning liquid in the cleaning tube by suction or indentation in each through hole in the endoscope.

Further, according to the present invention, after inserting the endoscope from the insertion hole side in the looped state along the loop, the tap water containing the enzyme detergent is supplied into the washing tube, and the tap water is bypassed. A first washing step of forcibly circulating from the first end side to the second end side through the furnace to clean the endoscope so as to generate a circulation flow of the cleaning liquid from the second end side to the first end side in the cleaning tube; A second washing step of washing with alkaline substances obtained by electrolysis of brine in the same manner as above, a third washing step of washing with acidic substances in the same manner as above, and again with tap water. A cleaning method of an endoscope is provided, which has a fourth washing step of cleaning.

In this case, the cleaning tube is blown during the cleaning step to blow bubbles into the cleaning liquid in each cleaning tube, and to prevent the body insertion portion 2 of the endoscope from being in contact with the inner wall surface of the cleaning tube. It is possible to include at least one of the steps of vibrating.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 and 2 show a preferred embodiment of the cleaning apparatus according to the present invention. Reference numeral 10 in the drawing is a box-shaped casing, and inside the casing 10, as shown in FIG. 5, a cleaning mechanism 11 for cleaning the endoscope 1 is incorporated, and the upper surface side of the casing 10 is shown. In the cleaning mechanism 11, a well-shaped insertion opening 13 for inserting the endoscope 1 is provided in the cleaning tube 12, and a panel portion for operation and display is located at the front side. (14) is formed, and the operation part switch 15, the display lamp 16, etc. are provided in this panel part 14. As shown in FIG.

The cleaning mechanism 11 includes the cleaning tube 12 for cleaning the body insertion part 2 of the endoscope 1, and is configured as shown in FIG. 3 as a whole. Since the cleaning tube 12 was formed by winding a plastic tube made of a synthetic resin in a loop, as shown in FIG. 2, the cleaning tube 12 is biased toward the endoscope insertion hole 13 in the casing 10. Position the loop vertically in position, and connect the first end 12a to the endoscope insertion hole 13, and at the same time, the second end 12b on the opposite side is connected to the drain port 20 provided on the bottom of the casing 10. It is connected via 21, and the said drain port 20 is connected with the pump 23 for drainage through the valve 22. As shown in FIG. Thus, the first end 12a of the cleaning tube 12 is at a high position and the second end 12b is at a lower position. In addition, the cleaning tube 12 is fixed to the casing 10 substantially at both positions of the first end 12a and the second end 12b connected to the insertion hole 13 and the drain 20. The middle loop portion is not fixedly supported by the casing 10 and is freely vibrated.

As such, the cleaning pipe 12 can be compactly installed in a small planar space by bending the cleaning pipe 12 in a looped state and vertically installing the device. That is, in the present invention, the vertical direction does not necessarily mean only completely vertical, but may be slightly oblique. For example, the object of the present invention can be sufficiently achieved if the inclination angle is about 45 degrees or less. The water supply port 26 for the cleaning liquid is branched from the connector 21 at a position near the second end 12b of the cleaning tube 12 to supply the cleaning liquid to the water supply port 26 via the water supply pipe 27. The mechanism 28 is connected. Since the washing liquid supply mechanism 28 is configured to selectively supply tap water, alkaline substances and acidic substances as washing liquid, the tap water pipe line 31 having a connection port 31a for connecting to the faucet 30, It is connected to the alkaline conduit 33 communicating with the first tank 32 containing the alkaline substance, and the acidic conduit 35 communicating with the second tank 34 containing the acidic substance, and each conduit valve 36a. It has a connector 37 connected to, 36b, 36c, and this connector 37 is connected to the said water supply pipe 27. Thus, by opening and closing the valves 36a, 36b, and 36c, the cleaning liquid is supplied through the water supply pipe 27 on the second end 12b side in the cleaning pipe 12 to provide the first stage 12a. The cleaning tube 12 is filled until it overflows from the endoscope insertion opening 13 on the side.

The first tank 32 and the second tank 34 are connected to an electrolyte generator 40 for generating an alkaline substance and an acid product electrolyzed by brine. The electrolyte generator 40 is a tap water supplied from the tap water passage 31 through the branch path 31b and the brine supplied from the brine tank 41 through the inlet 17 installed on the upper surface of the casing 10. By mixing and electrolyzing the mixed brine, a strong acid product can be obtained at the positive electrode and a strong alkaline product at the negative electrode, so that the obtained alkaline material is contained in the first tank 32 in a sealed structure and the acidic product is It is to be accommodated in the second tank 34 of the closed structure in the same manner. Here, since the principle of electrolysis used in the electrolyte generator 40 is already known, this detailed description is omitted.

As shown in FIGS. 3 and 4, the auxiliary chamber 44 is adjacent to the endoscope inlet 13 provided on the upper surface of the casing 10 with the first partition wall having a lower height than the main wall interposed therebetween. ), The drainage chamber 46 is adjacent to each other with the second partition wall 45 lower than the first partition wall 43 interposed therebetween. The auxiliary chamber 44 is a part or accessory taken out from the endoscope 1 at the time of cleaning the endoscope 1, for example, the air delivery / transmission button 7 and the suction cylinder 6a taken out of the air delivery / transmission cylinder 7a. The suction button 6, the cap, and the like, which are taken out from the above, is accommodated and cleaned. Therefore, when the cleaning liquid is filled in the cleaning tube 12 in the cleaning of the endoscope 1, a part of the cleaning liquid overflows the first partition 43 from the endoscope insertion opening 13 to the auxiliary chamber 44. It flows in, and after washing the said accessory accommodated in the auxiliary chamber 44, it overflows the 2nd partition 45 and flows into the drain chamber 46, and is discharged | emitted to the outside from the drain hole provided in the drain chamber.

The endoscope insertion opening 13 is connected to an exhaust pipe 48 extending from the first tank 32 in which the alkaline substance is accommodated, and chlorine gas generated on the alkaline substance side during electrolysis and flowing into the first tank 32. It is to be discharged into the endoscope insertion hole 13 through the exhaust pipe (48). Therefore, since the chlorine gas discharged into the endoscope insertion hole 13 is heavier than the specific gravity air, the chlorine gas overflows the first partition 43 and flows into the auxiliary chamber 44 like the cleaning liquid, and then again the second partition 45 ) Flows into the drainage chamber 46 and is discharged to the outside along the drain hole.

In addition, a bypass flow path 50 that connects the first end 12a side and the second end 12b side is connected to the cleaning tube 12. The bypass flow path 50 is composed of an outer conduit 50a connecting between the endoscope insertion opening 13 and the water supply port 26 and a pump 50b installed inside the outer conduit 50a. When the endoscope 1 is cleaned, the cleaning liquid inside the endoscope insertion port 13 is forced to circulate toward the second end 12b side through the bypass flow path 50, so that the inside of the cleaning tube 12 is removed. The circulation flow of the washing | cleaning liquid which circulates at high speed toward the endoscope insertion opening 13 side from the 2nd stage 12b side is produced | generated.

The cleaning tube 12 is further connected with bubble generating means 51 for blowing bubbles into the cleaning liquid and a vibrator 52 for vibrating the cleaning tube 12 in order to increase the cleaning efficiency.

The bubble generating means 51 is composed of an air supply device 51a for supplying air and a pump 51b for blowing air from the air supply device 51a into the cleaning tube 12. It is connected to the position of the 2nd end 12b side of the washing | cleaning tube 12. As shown in FIG. Therefore, by blowing bubbles into the cleaning liquid circulating inside the cleaning tube 12 at high speed, the stirring of the cleaning liquid is promoted and the cleaning effect is enhanced.

On the other hand, the vibrator 52 is installed in the casing 10 and the vibration output portion 52a is connected to a pipe portion where both sides of the cleaning pipe 12 bent in a loop state intersect, for example, about 140 cycles per minute. The cleaning tube 12 is caused to vibrate on a periodic basis. Therefore, the endoscope 1 relatively changes within the cleaning tube 12 due to the vibration of the cleaning tube 12 caused by the vibrator 52, thereby making sure that the cleaning tube 12 is not only in contact with the cleaning liquid. The part in contact with the inner surface is separated from the cleaning tube 12 and comes into contact with the cleaning liquid, thereby eliminating the inconvenience that the endoscope 1 does not clean the part in contact with the cleaning tube 12, thereby eliminating the external surface of the endoscope 1. It is possible to reliably wash the whole.

In addition, the cleaning tube 12 is sealed by the pipe portions intersecting with each other at the lower end of the loop by a small diameter passage (55). By shorting the cleaning tube 12 to the passage 55 at the lower end of the loop as described above, a part of the cleaning liquid is discharged from the drain port 20 to the pump 23 after the cleaning liquid inside the cleaning tube 12 is finished. It is possible to prevent it from being sucked up and remaining in the lower half of the loop. Here, it goes without saying that the cross-sectional area of the passage 55 is large enough not to cause an obstacle while generating a circulating flow of the cleaning liquid inside the cleaning tube 12.

Further, the cleaning device is provided with one or two or more sets of internal air-cleaning means 57 for cleaning internal air such as suction holes and water feed holes formed in the endoscope 1. The internal air cleaning means 57 is a tube 58 for connecting to a suction port connector 8 connected to the front end side connector portion 5 of the universal cord 4 of the endoscope 1, the air supply / water supply pipe connecting portion 9, and the like. ) And a cleaning pump 59 and a drying pump 60 connected to the tube 58 so as to be switched to the switching device 61. The tip of the tube 58 is a casing 10. It is connected to the inside of the endoscope insertion hole (13).

Therefore, when the tube 58 is connected to the suction port connector 8, the air inlet / water pipe connecting portion 9, and the like, the cleaning liquid inside the cleaning tube 12 is removed by the endoscope 1 using the cleaning pump 59. The inside of the endoscope is cleaned by suctioning from the suction, the air inlet, the water outlet, or the like connected to the distal end of the body insertion part 2 of the body. In this case, the cleaning liquid is pressurized from the tube 58 through the suction port connector 8, the air inlet / water pipe connecting portion 9, and the like into the suction hole or the water hole, and the pressure of the suction hole and the water hole is reduced. The interior may be cleaned.

In addition, after the cleaning is completed, the switching device 61 is switched to use the drying pump 60 to blow out the cleaning liquid remaining in the suction hole or the water supply hole by blowing compressed air, or discharge and dry it by suction. It is possible.

Next, an embodiment of a method for cleaning the endoscope 1 with the cleaning device having the above configuration will be described.

First, the body insertion part 2 of the endoscope 1 is inserted while bending along the loop from the endoscope insertion hole 13 of the upper surface of the casing 10 to the inside of the cleaning tube 12 curved in a loop state. In this case, even if the length of the body insertion part 2 is long, since the cleaning pipe 12 is curved in a loop state, it is possible to reliably accommodate the whole body insertion part 2 inside the cleaning pipe 12.

Next, the enzyme detergent is introduced into the cleaning tube 12 from the inlet 17 of the upper surface of the casing 10 through the endoscope insertion opening 13, and at the same time, tap water is discharged from the faucet 31 and the valve 36a. It feeds into the cleaning pipe 12 from the water supply port 26 through the inside. This supply is full of tap water and also inside the endoscope insertion hole 13 after the tapping pipe 12 fills the entire washing tube 12, and part of the second overflows the first partition 43 and flows into the auxiliary chamber 44. It is implemented until it overflows the partition 45 and flows out into an outlet.

When the supply of the tap water containing the enzyme detergent is finished, the valve 36a is closed to operate the pump 50b in the bypass flow path 50, and at the same time, the bubble generating means 51 and the vibrator 52 operate to operate the enzyme cleaner. The first washing process is performed by tap water. At this time, in the cleaning tube 12, the cleaning liquid is forced to circulate from the first end 12a side to the second end 12b side by the bypass flow path 50, thereby providing a second stage ( A high-speed circulating flow is generated from the side of 12b) toward the first end 12a, and foreign substances in a slippery or jerry state attached to the surface of the endoscope 1 are wiped off by contact with the circulating flow.

In addition, by blowing bubbles into the cleaning liquid by the bubble generating means 51, the stirring of the cleaning liquid is promoted, and the cleaning effect is further improved.

In addition, the endoscope 1 inside the cleaning tube 12 relatively shifts or vibrates due to the vibration of the cleaning tube 12 caused by the vibrator 52 so that the cleaning tube 12 is in reliably contacted with the cleaning liquid flow. Since the endoscope portion in contact with the inner surface is separated from the cleaning tube 12 to be easily in contact with the cleaning liquid, the endoscope 1 is brought into contact with the cleaning tube 12, thereby eliminating the inconvenience that the contact portion was not cleaned. The entire outer surface of the endoscope 1 is reliably cleaned.

In addition, cleaning of the suction hole, the water feed hole, and the like formed therein in parallel with the cleaning of the outer surface of the endoscope is performed using the internal cleaning means 57. At this time, the cleaning pump 59 is used by switching the switching device 61 so that the cleaning liquid in the cleaning tube 12 is removed from the suction, the air inlet, the water inlet or the like connected to the distal end of the body insertion part 2 of the endoscope 1. The inside of the endoscope is cleaned by being sucked into the suction hole or the water hole.

When the first washing process is completed by tap water containing the enzyme detergent, the valve 22 is opened and the pump 23 is operated to remove the washing liquid in the washing tube 12 by suction from the drain 20. do. At this time, since the lower end of the loop is short-circuited by the passage 55 having a small diameter, the inside of the cleaning tube 12 can be completely discharged without some of the cleaning liquid being sucked and not remaining in the lower half of the loop.

When discharge of the said washing | cleaning liquid is completed, a 2nd washing process is performed with a strong alkaline substance. That is, the alkaline substance in the first tank 32 is supplied into the cleaning tube 12 by the alkaline receiving tube passage 33 through the valve 36b, and then the pump 50b in the bypass flow passage 50 is Simultaneously with the operation, the bubble generating means 51 and the vibrator 52 are operated so that the washing with the alkaline substance is carried out in the same manner as with the tap water containing the enzyme detergent. Therefore, fat, blood, protein, etc. adhered to the endoscope 1 are dissolved and removed by the second washing process.

Also in this case, the inside of the endoscope 1 is cleaned at the same time by using the above-mentioned internal hole cleaning means 57, such as a suction hole and a water feed hole.

When the second washing step with alkaline compounds is finished, a third washing step with strong acids is performed. That is, the acid product in the second tank 34 is supplied into the cleaning pipe 12 through the valve 36c by the acid water pipe 35. Thereafter, the pump 50b in the bypass flow passage 50 is operated, and the bubble generating means 51 and the vibrator 52 are operated so that the cleaning by acidic products is performed in the same way as the alkaline ones. Is carried out. Therefore, the endoscope 1 is cleaned and sterilized by a third washing step using this acid.

In this case, too, sterilization and cleaning of the suction hole and the water-feeding hole and the like in the endoscope 1 are simultaneously performed using the above-described air-cleaning means 57.

When the third washing step with acidic water is finished, the fourth washing step with tap water is again performed. That is, tap water is supplied into the washing pipe 12 through the valve 36a by the tap water pipe 31, and then the pump 50 b in the bypass flow path 50 operates and bubble generating means ( 51) and the vibrator 52 are operated so that the rinse cleaning with tap water is carried out in exactly the same way as with the acid. Therefore, the acidic substance adhering to the endoscope 1 is completely washed out by the fourth washing process using the tap water, thereby preventing deterioration of the endoscope 1 by acid and simplifying post-treatment of the endoscope 1.

Also in this case, the rinse cleaning of the endoscope 1, the internal suction hole, the water-receiving hole, etc., is simultaneously performed using the internal hole cleaning means 57. FIG.

When the cleaning is completed, the switching device 61 of the internal air cleaning means 57 is switched and the drying pump 60 is used to blow or suck compressed air into the suction hole or the water supply hole, The cleaning liquid remaining in the ball or water hole is discharged, and the inside of the endoscope is dried.

The endoscope 1 thus cleaned is taken out from the cleaning tube 12, and the outer surface is dried or other necessary post-treatment is performed.

According to the endoscope cleaning apparatus and method of the present invention, it is possible to reliably clean a long endoscope with a small cleaning space and a small amount of cleaning liquid, and is excellent in economical cleaning effect.

Claims (14)

A casing having an insertion hole for inserting an endoscope at an upper portion thereof and a drain hole opened and closed by a valve at a bottom portion thereof; Formed by bending a flexible tube in a loop. A washing tube having a loop installed vertically inside the casing, the first end of which is connected to the endoscope insertion hole, and a second end of the opposite side connected to the drain hole; A cleaning liquid supply mechanism for supplying a cleaning liquid into the cleaning tube; It consists of an outer conduit combining the first end side and the second end side of the cleaning tube, and a pump provided in the outer conduit to forcibly circulate the cleaning liquid in the cleaning tube from the first end side to the second end side through the outer tube and the pump. A bypass flow path for generating a circulation flow of the cleaning liquid from the second end side in the cleaning tube to the first end side in the cleaning tube; and And a drainage pump connected to the drainage port via the valve. The method of claim 1, And a bubble generating means for blowing bubbles into the cleaning liquid in the cleaning tube at a position on the second end side of the cleaning tube. The method according to claim 1 or 2, Both end portions of the cleaning tube are fixedly supported by the casing, and the middle portion is provided to vibrate, and a vibrator for vibrating the cleaning tube is connected to the middle portion thereof. The method according to claim 1 or 2, The tubular portion intersecting the two sides of the cleaning tube curved in a loop state is in communication with each other by a small diameter passage at the lower end of the loop is sealed of the endoscope. The method of claim 3 The tubular portion intersecting the two sides of the cleaning tube curved in a loop state is in communication with each other by a small diameter passage at the lower end of the loop is sealed of the endoscope. The method according to claim 1, 2 or 5, The cleaning tube has a water supply port for a cleaning liquid at the end of the second end side, and the cleaning liquid supply mechanism is connected to the water supply port, and the cleaning liquid supply mechanism is an alkaline substance obtained by electrolysis of tap water and brine, Cleaning device for an endoscope, characterized in that the acidic material can be selectively supplied. The method of claim 3, wherein The cleaning tube has a water supply port for a cleaning liquid at the end of the second end side, and the cleaning liquid supply mechanism is connected to the water supply port, and the cleaning liquid supply mechanism is an alkaline substance obtained by electrolysis of tap water and brine, Cleaning device for an endoscope, characterized in that the acidic material can be selectively supplied. The method of claim 4, wherein The cleaning tube has a water supply port for a cleaning liquid at the end of the second end side, and the cleaning liquid supply mechanism is connected to the water supply port, and the cleaning liquid supply mechanism is an alkaline substance obtained by electrolysis of tap water and brine, Cleaning device for an endoscope, characterized in that the acidic material can be selectively supplied. The method according to claim 1, 2, 5, 7, or 8, And the cleaning device has an internal through-hole cleaning means for circulating the through-through cleaning liquid by suction or indentation into each of the through-holes inside the endoscope to clean the through-holes. The method of claim 3, wherein And the cleaning device includes internal through-hole cleaning means for circulating the cleaning liquid by suction or indentation into each of the through-holes within the endoscope, and for cleaning the through-holes. The method of claim 4, wherein And the cleaning device has an internal through-hole cleaning means for circulating the through-through cleaning liquid by suction or indentation into each of the through-holes inside the endoscope to clean the through-holes. The method of claim 6, And the cleaning device has an internal through-hole cleaning means for circulating the through-through cleaning liquid by suction or indentation into each of the through-holes inside the endoscope to clean the through-holes. The loop formed by bending the plastic tube in the loop state is installed in the vertical state, and the inside of the endoscope body is inserted into the body of the endoscope from the insertion hole in the cleaning tube connected to the drain port through which the first end is connected to the endoscope insertion port and the second end on the opposite side is opened and closed by the valve. Inserting the insertion portion while bending along the loop; Supplying an enzyme detergent and tap water into the cleaning tube; The tap water containing the enzyme detergent in the cleaning tube is forced to circulate from the first end side to the second end side through a bypass flow path provided outside, so that the tap water is moved from the second end side in the cleaning tube toward the first end side. A first washing step of generating a circulation flow to clean the endoscope; Discharging the tap water in the cleaning tube from the drain port; Supplying an alkaline substance produced by electrolysis of brine into the washing tube; By circulating the alkaline substance in the cleaning tube from the first end side to the second end side through the bypass flow path, the circulation flow of the cleaning liquid is generated from the second end side in the cleaning tube toward the first end side. A second washing step of cleaning the; Discharging the alkaline substance in the cleaning tube; Supplying an acid product produced by electrolysis of brine into the cleaning tube; By forcibly circulating the acid product in the cleaning tube from the first end side to the second end side through the bypass flow path, the circulation flow of the cleaning liquid is generated from the second end side in the cleaning tube toward the first end side. A third washing step of cleaning the; Discharging the acid product in the cleaning tube; Supplying tap water into the cleaning tube; By forcibly circulating the tap water in the cleaning tube from the first end side to the second end side through the bypass flow path, a circulation flow of the cleaning liquid is generated from the second end side in the cleaning tube toward the first end side. A fourth washing step of washing; and And a step of draining tap water in the cleaning tube. The method of claim 13, At least one of the steps of blowing bubbles into the cleaning liquid in the cleaning tube, and vibrating the cleaning tube to prevent the body insertion portion of the endoscope from contacting the inner surface of the cleaning tube. Endoscope cleaning method characterized in that.