A cleaning brush assembly for a digestive endoscope

Abstract

The present application provides a cleaning brush assembly for a digestive endoscope, belonging to the field of endoscope cleaning, including a connecting pipe and a clamp. A cleaning component is arranged in the slot of the connecting pipe. The cleaning component includes a sleeve, a connecting shaft, a brush strip, a pressing component and a cleaning component. The two ends of the sleeve are open and communicated with the two side walls of the connecting pipe. In the present invention, by providing the connecting shaft, the brush strip, the pressing component and the cleaning component, through the continuous rotation of the connecting shaft, the brush strip is driven to rotate reciprocally relative to the outer surface of the snake tube. Through the frictional force between the brush strip and the snake tube, the outer side wall of the snake tube is cleaned. At the same time, under the organic cooperation of the connecting shaft, the pressing component and the cleaning component, through the extrusion of the snake tube by the cleaning component, the cleaning effect on the snake tube is further improved. The linear motion of the cleaning component relative to the connecting shaft and the frictional force between the cleaning component and the snake tube can achieve a good cleaning effect.

Description

Technical Field

[0001] The present application relates to the technical field of endoscope cleaning, and particularly relates to a cleaning brush assembly for a digestive tract endoscope. Background Art

[0002] The digestive tract endoscope is a key tool for diagnosing and treating digestive tract diseases, with both precision and minimally invasive characteristics. The endoscope is equipped with a slender flexible tube, and the front end contains a high-definition camera and a strong light source, which can transmit images to the screen in real time and can penetrate deep into the esophagus, stomach, duodenum, or colon and rectum. During use, the endoscope directly contacts the digestive tract mucosa and may be contaminated with the patient's blood, body fluids, secretions, food residues, and even pathogenic microorganisms. If not thoroughly cleaned, these pollutants may be transmitted to other patients during subsequent use. After use, it needs to be cleaned immediately, and a cleaning brush is also used;

[0003] In the existing endoscope cleaning solutions, a cleaning device for an endoscope with the publication number CN117770989A moves a clamping cleaner on a moving block vertically through a moving mechanism, and a spraying mechanism sprays water on the endoscope to wet it, so that the clamping cleaner cleans the snake tube and the probe under the endoscope, replacing manual cleaning. The operation is simple and standardized, avoiding the contact between medical staff and germs, reducing the risk of infection, and protecting the health of medical staff;

[0004] However, in the actual use process, the cleaning effect is achieved through the relative movement of the cleaning brush relative to the endoscope snake tube, but the displacement direction of the cleaning brush is relatively single, so the cleaning efficiency is poor;

[0005] Therefore, we propose a new cleaning brush assembly for a digestive tract endoscope. Summary of the Invention

[0006] In view of this, the purpose of the present application is to provide a cleaning brush assembly for a digestive tract endoscope to improve the cleaning effect on the endoscope snake tube, while reducing the consumption of cleaning liquid and saving resources.

[0007] To solve the above technical problems, the present application provides the following technical solutions:

[0008] A cleaning brush assembly for a digestive tract endoscope includes a communicating pipe and a fixture. A cleaning component is provided in the groove of the communicating pipe. The cleaning component includes a sleeve, a connecting shaft, a brush strip, a pressing member, and a cleaning member. The two ends of the sleeve are open and communicate with the two side walls of the communicating pipe. A strip-shaped water injection port is provided at the top of the sleeve. The hollow connecting shaft penetrates through the sleeve. A strip-shaped hole is provided on the outer side wall of the connecting shaft. The brush strip fits on the inner wall of the connecting shaft. The pressing member including an inclined surface is arranged outside the connecting shaft. The cleaning member is movably arranged inside the sleeve;

[0009] A transmission assembly is also provided at the end of the communicating pipe. The transmission assembly includes a bracket, a servo motor, and a crankshaft. The bracket is provided at the end of the communicating pipe. The servo motor is installed outside the communicating pipe. The crankshaft has a transmission relationship with the servo motor. One end of the connecting shaft is connected to the end face of the crankshaft.

[0010] A spraying assembly is also provided at the top of the communicating pipe.

[0011] Preferably, the communicating pipe is in a "U" shape. The sleeve is arranged above the position between the two vertical parts of the communicating pipe. Both ends of the sleeve penetrate through the side wall of the communicating pipe. The connecting shaft penetrates through both sides of the communicating pipe.

[0012] Preferably, the side of the brush strip facing the central axis of the connecting shaft is a concave arc surface. There are two brush strips, and the two brush strips are symmetrically arranged on both sides of the axis of the connecting shaft. The length of the brush strip is equal to the length of the connecting shaft.

[0013] Preferably, the pressing member is spiral in shape. The outer diameter of the pressing member is the same as the inner diameter of the sleeve. The inner circle of the pressing member fits against the outer side wall of the connecting shaft.

[0014] Preferably, the diameter of the cleaning member is larger than the opening width of the strip-shaped hole of the connecting shaft. The cleaning member is spherical in structure.

[0015] Preferably, the spraying assembly includes: a water tank, a cylinder block, a water suction pipe, a piston, a water outlet pipe, and a spray pipe. The water tank is arranged on one side of the communicating pipe. The cylinder block is arranged on the top of the bracket. The first end of the water suction pipe is connected to the top of the cylinder block. The second end of the water suction pipe penetrates through the water tank. The piston is slidably arranged inside the cylinder block. The other end of the piston is clamped to the journal part of the crankshaft. The first end of the water outlet pipe is connected to the top of the cylinder block. The spray pipe is arranged at the top strip-shaped water injection port of the sleeve. The second end of the water outlet pipe is connected to the end of the spray pipe. Spray holes are opened at the bottom of the spray pipe.

[0016] One-way valves are provided on both the water suction pipe and the water outlet pipe. The end of the water suction pipe penetrating through the water tank extends to the lower part inside the water tank.

[0017] Preferably, one end of the spray pipe extends above the fixture.

[0018] Preferably, the bottom of the spray pipe is provided with equally spaced spray holes. The diameter of the spray holes at the bottom of the spray pipe is smaller than the diameter of the cleaning member.

[0019] Preferably, a strip-shaped hole is opened at the bottom of the piston. The strip-shaped hole at the bottom of the piston is sleeved on the journal part of the crankshaft.

[0020] Preferably, the fixture includes a connecting seat, a clamping block and a spring. A groove is formed at the top of the connecting seat. The clamping block penetrates through the two vertical side walls of the top groove of the connecting seat. The spring is arranged between the inner wall of the connecting seat and the clamping block.

[0021] In the present invention, by providing a connecting shaft, a brush strip, an extrusion member and a cleaning member, through the continuous rotation of the connecting shaft, the brush strip is driven to rotate reciprocally relative to the outer surface of the coiled tube. Through the friction force between the brush strip and the coiled tube, the outer side wall of the coiled tube is cleaned. At the same time, under the organic cooperation of the connecting shaft, the extrusion member and the cleaning member, through the extrusion of the cleaning member on the coiled tube, the cleaning effect on the coiled tube is further improved. The linear motion of the cleaning member relative to the connecting shaft and the friction force between the cleaning member and the coiled tube can achieve a good cleaning effect.

[0022] In the present invention, by providing a spraying assembly, the cleaning liquid sprayed out of the spray pipe can wash the coiled tube and the cleaning member, helping to reduce the impurity residue on the cleaning member and achieving a good cleaning effect. When using the enzymatic solution to dissolve organic impurities, under the organic cooperation of the cleaning member and the extrusion member, the enzymatic solution can be promoted to play a dissolving role. The enzymatic solution can be in full contact with the impurities. At the same time, the dosage of the medicament can be reduced through the cleaning member, saving resources.

[0023] In the present invention, by providing a fixture and a connecting shaft, the endoscope is clamped and fixed by the fixture. Under the organic cooperation of the brush strip and the connecting shaft, the coiled tube can be kept straight, and at the same time, the force on the coiled tube is uniform, not easy to shake, and not easy to bend and deform during cleaning, having a good protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0025] Figure 1 It is a schematic diagram of the overall structure in the present application;

[0026] Figure 2 It is a schematic diagram of the structure of the connecting pipe in the present application;

[0027] Figure 3 It is a schematic diagram of the structure of the connecting shaft in the present application;

[0028] Figure 4 It is a schematic diagram of the sectional structure of the connecting pipe in the present application;

[0029] Figure 5 It is a schematic diagram of the structure of the extrusion member in the present application;

[0030] Figure 6 It is a schematic diagram of the structure of the brush strip in the present application;

[0031] Figure 7 Schematic diagram of the casing profile structure in this application;

[0032] Figure 8 Schematic diagram of the crankshaft structure in this application;

[0033] Figure 9 Schematic diagram of the fixture structure in this application;

[0034] [Reference numerals]

[0035] 1. Connecting pipe; 2. Fixture; 201. Connecting seat; 202. Clamping block; 203. Spring; 3. Casing; 301. Connecting shaft; 302. Brush strip; 303. Extrusion member; 304. Cleaning member; 4. Bracket; 401. Servo motor; 402. Crankshaft; 5. Spraying assembly; 501. Water tank; 502. Cylinder block; 503. Water suction pipe; 504. Piston; 505. Water outlet pipe; 506. Nozzle. Detailed implementation manners

[0036] A cleaning brush assembly for a digestive endoscope provided by this application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0037] As Figures 1 - 6 shown, a cleaning brush assembly for a digestive endoscope provided by an embodiment of this application includes a connecting pipe 1 and a fixture 2. A cleaning assembly is provided in the slot of the connecting pipe 1. The cleaning assembly includes a casing 3, a connecting shaft 301, a brush strip 302, an extrusion member 303 and a cleaning member 304. The two ends of the casing 3 are open and communicate with the two side walls of the connecting pipe 1. A strip-shaped water injection port is provided at the top of the casing 3. The hollow connecting shaft 301 penetrates through the casing 3. A strip-shaped hole is opened on the outer side wall of the connecting shaft 301. The brush strip 302 fits on the inner wall of the connecting shaft 301. The extrusion member 303 including an inclined surface is arranged on the outside of the connecting shaft 301. The cleaning member 304 is movably arranged inside the casing 3;

[0038] A transmission assembly is further provided at the end of the connecting pipe 1. The transmission assembly includes a bracket 4, a servo motor 401 and a crankshaft 402. The bracket 4 is arranged at the end of the connecting pipe 1. The servo motor 401 is installed on the outside of the connecting pipe 1. The crankshaft 402 has a transmission relationship with the servo motor 401. One end of the connecting shaft 301 is connected to the end face of the crankshaft 402;

[0039] A spraying assembly 5 is further provided at the top of the connecting pipe 1;

[0040] During actual use, the flexible tube part of the endoscope is inserted into the connecting shaft 301 from one side of the clamp 2, so that the outer wall of the flexible tube contacts the brush strip 302. The endoscope is clamped and fixed by the clamp 2. Driven by the servo motor 401, the crankshaft 402 rotates continuously, driving the connecting shaft 301 to rotate continuously. The brush strip 302 rotates reciprocally relative to the outer surface of the flexible tube. Through the frictional force between the brush strip 302 and the flexible tube, the outer side wall of the flexible tube is cleaned;

[0041] The connecting shaft 301 is provided with a strip-shaped hole, which can discharge the impurities brushed off by the brush strip 302. When the connecting shaft 301 rotates, the brush strip 302 and the impurities inside it are affected by the centrifugal force. When the centrifugal force is greater than the adhesion force of the impurities to the brush strip 302, they can be thrown out, thus accelerating the discharge of impurities;

[0042] The cleaning member 304 is pre-filled in the sleeve 3, and the cleaning member 304 fills the inner cavity of the sleeve 3, so that the cleaning member 304 can fit the outer side wall of the connecting shaft 301. During the rotation of the connecting shaft 301, the cleaning member 304 is driven to rotate. The cleaning member 304 can be embedded in the strip-shaped hole of the connecting shaft 301 and contact the flexible tube. Through the extrusion of the cleaning member 304 on the flexible tube, the cleaning effect on the flexible tube is further improved;

[0043] During the rotation of the connecting shaft 301, the pressing member 303 is driven to rotate reciprocally. The pressing member 303 has an inclined surface. During the rotation of the pressing member 303, the cleaning member 304 is extruded through the inclined surface, so that the cleaning member 304 generates a linear motion relative to the connecting shaft 301. The frictional force between the cleaning member 304 and the flexible tube can achieve a good cleaning effect;

[0044] At the same time, a water injection port is opened at the top of the sleeve 3, and cleaning liquid can be poured in to wash the cleaning member 304 and the flexible tube, further improving the cleaning effect. A water tank is arranged outside the connecting pipe 1 to collect the cleaning liquid, improving safety and environmental hygiene.

[0045] In this embodiment, as Figures 2 - 9 shown, the connecting pipe 1 is of a "U" - shaped structure. The sleeve 3 is arranged above the position between the two vertical parts of the connecting pipe 1. Both ends of the sleeve 3 penetrate through the side wall of the connecting pipe 1, and the connecting shaft 301 penetrates through both sides of the connecting pipe 1;

[0046] The end of the sleeve 3 is communicated with the vertical part of the connecting pipe 1. When the pressing member 303 continuously extrudes the cleaning member 304 to one side, the cleaning member 304 continuously moves relative to the inside of the sleeve 3 until the cleaning member 304 enters the connecting pipe 1. With the continuous progress of the above operations, the cleaning member 304 continuously displaces inside the connecting pipe 1 until it moves back into the sleeve 3 again. In this way, the cleaning member 304 is recycled.

[0047] One side of the brush strip 302 facing the central axis of the connecting shaft 301 is a concave arc surface. There are two brush strips 302, and the two brush strips 302 are symmetrically arranged on both sides of the axis of the connecting shaft 301. The length of the brush strip 302 is equal to the length of the connecting shaft 301.

[0048] The concave arc surface of the brush strip 302 can fit the outer peripheral surface radian of the coiled pipe, so as to ensure the contact area between the brush strip 302 and the coiled pipe. At the same time, there are two brush strips 302, and the two brush strips 302 are symmetrically arranged. Therefore, the two relatively arranged concave arc surfaces can clamp the outer side wall of the coiled pipe. With the organic cooperation of the brush strip 302 and the connecting shaft 301, the coiled pipe can be kept straight, and at the same time, the force on the coiled pipe is uniform, it is not easy to shake, and it is not easy to bend and deform during cleaning, having a good protection effect. And the length of the brush strip 302 is equal to the length of the connecting shaft 301. When the brush strip 302 rotates one week around the central axis of the connecting shaft 301, a 360° cleaning of the outer side wall of the coiled pipe can be completed, having good cleaning efficiency and cleaning effect.

[0049] The two brush strips 302 are distributed on both sides of the strip-shaped hole on the outer side wall of the connecting shaft 301. Therefore, the strip-shaped hole still has a good effect of discharging impurities, and can prevent the impurities from being re-adsorbed on the outer surface of the coiled pipe.

[0050] The extrusion part 303 is in a spiral shape. The outer diameter of the extrusion part 303 is the same as the inner diameter of the sleeve 3. The inner circle of the extrusion part 303 fits on the outer side wall of the connecting shaft 301.

[0051] The spiral structure of the extrusion part 303 has a continuous inclined surface, which can continuously extrude the cleaning part 304 during the rotation of the extrusion part 303, so as to make the cleaning part 304 keep rotating and moving in a straight line at the same time, so that a good cleaning effect on the outer side wall of the coiled pipe can be achieved through the cleaning part 304.

[0052] With the extrusion of the extrusion part 303 on the cleaning part 304, the cleaning parts 304 filled in the sleeve 3 can be closely arranged with each other. The extrusion force of the extrusion part 303 on the cleaning part 304 can be converted into the extrusion force of the cleaning part 304 on the outer side wall of the coiled pipe, and the stubborn stains can be refined and separated.

[0053] Because the cleaning parts 304 are closely arranged with each other, even if a part of the cleaning parts 304 do not contact the connecting shaft 301, they can rotate due to the friction force between the two-by-two contacting cleaning parts 304. The impurities discharged through the strip-shaped holes of the connecting shaft 301 can be transferred to a position far from the connecting shaft 301 by the relative movement between the cleaning parts 304. The friction force between two adjacent cleaning parts 304 has an effect of extruding, crushing and refining the impurities. Therefore, an enzyme solution can be used in combination to dissolve the organic impurities. The refined impurities are more easily dissolved, and the cleaning efficiency is thus improved.

[0054] The diameter of the cleaning member 304 is greater than the opening width of the strip-shaped hole of the connecting shaft 301, and the cleaning member 304 is a spherical structure;

[0055] Prevent the cleaning member 304 from passing through the strip-shaped hole of the connecting shaft 301, prevent the connecting shaft 301 from being blocked by the cleaning member 304, and at the same time prevent the cleaning member 304 from excessively squeezing the coiled pipe, achieving the effect of protecting the coiled pipe;

[0056] The spherical structure of the cleaning member 304 has a low rolling resistance and can move smoothly relative to the sleeve 3. There is a point contact between two adjacent cleaning members 304, so there is a gap. This gap can accommodate impurities, making the position of the impurities controllable. The impurities are discharged from the sleeve 3 together with the cleaning member 304 by the pressing member 303;

[0057] The spraying assembly 5 includes: a water tank 501, a cylinder block 502, a water suction pipe 503, a piston 504, a water outlet pipe 505 and a spray pipe 506. The water tank 501 is arranged on one side of the communication pipe 1, the cylinder block 502 is arranged on the top of the bracket 4, the first end of the water suction pipe 503 is connected to the top of the cylinder block 502, the second end of the water suction pipe 503 penetrates through the water tank 501, the piston 504 is slidably arranged inside the cylinder block 502, the other end of the piston 504 is clamped to the journal part of the crankshaft 402, the first end of the water outlet pipe 505 is connected to the top of the cylinder block 502, the spray pipe 506 is arranged at the top strip-shaped water injection port of the sleeve 3, the second end of the water outlet pipe 505 is connected to the end of the spray pipe 506, and spray holes are opened at the bottom of the spray pipe 506;

[0058] Check valves are arranged on both the water suction pipe 503 and the water outlet pipe 505, and the end of the water suction pipe 503 passing through the water tank 501 extends to the lower part inside the water tank 501;

[0059] Driven by the servo motor 401, the crankshaft 402 rotates continuously. With the organic cooperation of the crankshaft 402 and the piston 504, the piston 504 is driven to move reciprocally inside the cylinder block 502. When the piston 504 moves downward relative to the cylinder block 502, the check valve on the water suction pipe 503 opens, and the check valve on the water outlet pipe 505 closes. Under the action of the negative pressure inside the cylinder block 502, the cleaning liquid in the water tank 501 can be sucked into the inside of the cylinder block 502. As the piston 504 moves upward relative to the cylinder block 502, the check valve on the water suction pipe 503 closes, and the check valve on the water outlet pipe 505 opens. Under the action of the positive pressure inside the cylinder block 502, the cleaning liquid in the cylinder block 502 is transported to the inside of the spray pipe 506 through the water outlet pipe 505 and sprayed out. The cleaning liquid sprayed out from the spray pipe 506 can wash the coiled pipe and the cleaning member 304, helping to reduce the impurity residue on the cleaning member 304 and achieving a good cleaning effect;

[0060] The gaps between multiple cleaning parts 304 are densely distributed, and the cleaning liquid can flow along the gaps to the surface of the connecting shaft 301 and the coiled pipe. Especially when using an enzymatic solution to dissolve organic impurities, under the organic cooperation of the cleaning part 304 and the extrusion part 303, it can promote the enzymatic solution to play a dissolving role, and the enzymatic solution can fully contact the impurities.

[0061] One end of the spray pipe 506 extends above the fixture 2;

[0062] By arranging the spray pipe 506 above the fixture 2, the endoscope at the position of the fixture 2 can be flushed and cleaned, expanding the cleaning range.

[0063] The bottom of the spray pipe 506 is provided with spray holes distributed at equal intervals, and the diameter of the spray holes at the bottom of the spray pipe 506 is smaller than the diameter of the cleaning part 304;

[0064] The spray pipe 506 is connected to the strip-shaped water injection port at the top of the sleeve 3. The multiple spray holes at the bottom of the spray pipe 506 can spray the cleaning part 304, the connecting shaft 301, the brush strip 302 and the coiled pipe from different positions, so as to achieve a good cleaning effect;

[0065] Under the action of the inclined surface of the extrusion part 303, the cleaning liquid in the sleeve 3 is also squeezed, which can promote the flow of the cleaning liquid and improve the flushing effect. At the same time, the cleaning part 304 is arranged in the sleeve 3, so the volume in the sleeve 3 is occupied by the cleaning part 304, and the corresponding amount of cleaning liquid can be reduced, having a saving effect.

[0066] The bottom of the piston 504 is provided with a strip-shaped hole, and the strip-shaped hole at the bottom of the piston 504 is sleeved on the journal part of the crankshaft 402;

[0067] The piston 504 slides relative to the bracket 4, and the journal part of the crankshaft 402 slides in the strip-shaped hole of the piston 504, so as to realize the straight up and down movement of the piston 504.

[0068] The fixture 2 includes a connecting seat 201, clamping blocks 202 and a spring 203. The top of the connecting seat 201 is provided with a groove. The clamping blocks 202 penetrate through the two vertical side walls of the top groove of the connecting seat 201, and the spring 203 is arranged between the inner wall of the connecting seat 201 and the clamping blocks 202;

[0069] The connecting seat 201 is attached to the end face of the communicating pipe 1. Under the extrusion action of the spring 203 on the clamping blocks 202, the two clamping blocks 202 can move relative to each other to realize the clamping work of the endoscope.

Claims

1. A cleaning brush assembly for a digestive endoscope, comprising a connecting tube (1) and a clamp (2), characterized in that, A cleaning component is provided in the slot of the connecting pipe (1). The cleaning component includes a sleeve (3), a connecting shaft (301), a brush strip (302), an extrusion member (303) and a cleaning member (304). The two ends of the sleeve (3) are open and communicate with the two side walls of the connecting pipe (1). A strip-shaped water injection port is provided at the top of the sleeve (3). The hollow connecting shaft (301) is arranged through the sleeve (3). A strip-shaped hole is provided on the outer side wall of the connecting shaft (301). The brush strip (302) is attached to the inner wall of the connecting shaft (301). The extrusion member (303) including an inclined surface is arranged on the outside of the connecting shaft (301). The cleaning member (304) is movably arranged inside the sleeve (3); A transmission component is further provided at the end of the connecting pipe (1). The transmission component includes a bracket (4), a servo motor (401) and a crankshaft (402). The bracket (4) is arranged at the end of the connecting pipe (1). The servo motor (401) is installed on the outside of the connecting pipe (1). A transmission relationship is established between the crankshaft (402) and the servo motor (401). One end of the connecting shaft (301) is connected to the end surface of the crankshaft (402); A spraying component (5) is further provided at the top of the connecting pipe (1). The connecting pipe (1) is of a "U" - shaped structure. The sleeve (3) is arranged above the position between the two vertical parts of the connecting pipe (1). Both ends of the sleeve (3) penetrate through the side wall of the connecting pipe (1). The connecting shaft (301) penetrates through both sides of the connecting pipe (1); The side of the brush strip (302) facing the central axis of the connecting shaft (301) is a concave arc surface. There are two brush strips (302). The two brush strips (302) are symmetrically arranged on both sides of the axis of the connecting shaft (301). The length of the brush strip (302) is equal to the length of the connecting shaft (301); The extrusion member (303) is spiral in shape. The outer diameter of the extrusion member (303) is the same as the inner diameter of the sleeve (3). The inner circle of the extrusion member (303) is attached to the outer side wall of the connecting shaft (301); The diameter of the cleaning member (304) is larger than the opening width of the strip - shaped hole of the connecting shaft (301). The cleaning member (304) is of a spherical structure; The spray assembly (5) includes: a water tank (501), a cylinder block (502), a water suction pipe (503), a piston (504), a water outlet pipe (505) and a spray pipe (506). The water tank (501) is arranged on one side of the connecting pipe (1). The cylinder block (502) is arranged on the top of the bracket (4). The first end of the water suction pipe (503) is connected to the top of the cylinder block (502). The second end of the water suction pipe (503) penetrates through the water tank (501). The piston (504) is slidably arranged inside the cylinder block (502). The other end of the piston (504) is clamped to the journal part of the crankshaft (402). The first end of the water outlet pipe (505) is connected to the top of the cylinder block (502). The spray pipe (506) is arranged at the top strip-shaped water injection port of the sleeve (3). The second end of the water outlet pipe (505) is connected to the end of the spray pipe (506). The bottom of the spray pipe (506) is provided with spray holes; One-way valves are arranged on both the water suction pipe (503) and the water outlet pipe (505). The end of the water suction pipe (503) penetrating through the water tank (501) extends to the lower part inside the water tank (501).

2. The cleaning brush assembly for a digestive endoscope according to claim 1, wherein: One end of the spray pipe (506) extends above the fixture (2).

3. The cleaning brush assembly for a digestive endoscope according to claim 1, characterized in that: The bottom of the spray pipe (506) is provided with spray holes evenly distributed. The diameter of the spray holes at the bottom of the spray pipe (506) is smaller than the diameter of the cleaning part (304).

4. The cleaning brush assembly of the digestive tract endoscope according to claim 1, wherein: A strip-shaped hole is opened at the bottom of the piston (504). The strip-shaped hole at the bottom of the piston (504) is sleeved on the journal part of the crankshaft (402).

5. The cleaning brush assembly for a digestive endoscope according to claim 1, wherein: The fixture (2) includes a connecting seat (201), a clamping block (202) and a spring (203). A groove is opened at the top of the connecting seat (201). The clamping block (202) penetrates through the two vertical side walls of the top groove of the connecting seat (201). The spring (203) is arranged between the inner wall of the connecting seat (201) and the clamping block (202).

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