Spiral brush for cleaning soft endoscope

Abstract

The invention relates to the technical field of cleaning devices, in particular to a spiral brush for cleaning a soft endoscope, which comprises a brush head assembly, a traction rod connected to the end part of the brush head assembly, a brush head rod and a protective head fixedly arranged at one end of the brush head rod, the material pushing plate, the inclined plate and the blocking plate which are integrally formed are arranged at the brush head assembly, drainage holes are reserved in the inclined plate and the material pushing plate, in the brushing process, disinfectant fluid can be added through the drainage holes, and under the cooperation of the spiral brush, the cleaning effect is good, and the cleaning effect is good. According to the device, viscous residual liquid can be rapidly removed and discharged through an outlet of the endoscope along with water flow in the forward movement process of the material pushing plate, and the situation that dirt and impurities are accumulated on the straight section of the endoscope and cannot be discharged can be avoided while the removing effect on the viscous residual liquid is improved.

Description

Technical Field

[0001] This invention relates to the field of cleaning device technology, and more particularly to a spiral brush for cleaning flexible endoscopes. Background Technology

[0002] The spiral brush used for cleaning flexible endoscopes is a medical tool specifically designed to clean the lumen of flexible endoscopes. Its core function is to use the bristles to reach deep into the endoscope channel and effectively remove contaminants such as residual body fluids, mucus, and tissue debris from the lumen, ensuring the cleanliness of the endoscope and reducing the risk of infection for patients.

[0003] Existing brush structures typically consist of a deformable alloy metal strip of a certain length and a brush head assembly installed at its end. The deformable alloy metal drives the brush head to slide and rotate into the endoscope, which can remove contaminants adhering to the endoscope. During operation, because flexible endoscopes are relatively long, they are placed in a spiral position during cleaning. As the brush head rotates and moves forward to clean, it can only scrape off the impurities adhering to the inner wall. This causes the scraped impurities, which have a certain density, to easily accumulate in the straight and curved sections of the endoscope channel, making it difficult to completely remove them in one go. Multiple operations are required, reducing the efficiency of endoscope cleaning. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a spiral brush for cleaning flexible endoscopes. It solves the problem that, due to the length of flexible endoscopes and their spiral placement during cleaning, the brush head can only scrape away impurities adhering to the inner wall. This results in the accumulation of dense impurities in the straight and curved sections of the endoscope channel, making complete removal difficult and requiring multiple passes, thus reducing cleaning efficiency. The invention improves the removal of viscous residues while preventing the accumulation of dirt and impurities in the straight sections of the endoscope.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a spiral brush for cleaning flexible endoscopes, including a brush head assembly and a traction rod connected to the end of the brush head assembly. A handle is fixedly installed at the end of the traction rod. The brush head assembly includes a brush head rod and a protective head fixedly installed at one end of the brush head rod. A spiral brush with an overall conical structure is fixedly installed on the brush head rod. An auxiliary cleaning component is fixedly installed at the other end of the brush head rod. The auxiliary cleaning component is detachably connected to the traction rod via a connecting component. The auxiliary cleaning component includes a pusher plate fixedly installed at the end of the brush head rod. The diameter of the pusher plate matches the inner diameter of the endoscope. An inclined plate for drainage is fixedly installed at the front end of the pusher plate. A barrier plate is fixedly installed at the front end of the inclined plate. The pusher plate, the inclined plate and the barrier plate are arranged in a coaxial ring. The pusher plate and the inclined plate are respectively provided with interconnected drainage holes, and the inner diameter of the top of the drainage hole is 1 / 3 of the inner diameter of its bottom end.

[0006] Preferably, the traction rod includes a spiral metal strip and an outer soft sheath covering it. The spiral metal strip is made of nickel-titanium alloy, and the outer soft sheath is made of PTFE (polytetrafluoroethylene).

[0007] Preferably, the spiral brush is made of medical-grade ultrafine nylon filaments, with the filament bundles arranged in a dense spiral, and the length of the top bristles of the spiral brush is shorter than that of the bottom bristles. The brush head rod is made of hard metal, and the spiral brush is embedded inside the brush head rod hole.

[0008] Preferably, the top bottom area of ​​the barrier plate and the inclined plate is smaller than their own bottom bottom area, the bottom bottom area of ​​the barrier plate is the same as the bottom bottom area of ​​the inclined plate, and the liquid outlet of the drainage hole is located on the inclined surface of the inclined plate.

[0009] Preferably, the multiple sets of drainage holes are evenly distributed on the inclined plate and inside with the brush head rod as the axis, and the two ends of the pusher plate are provided with concave rounded corners.

[0010] Preferably, the connecting assembly includes a first connecting pipe fixedly installed at the end of the traction rod and a second connecting pipe fixedly installed at the bottom of the pusher plate. The second connecting pipe is provided with a threaded sleeve, and an external thread corresponding to the internal thread of the threaded sleeve is formed on the outer periphery of the second connecting pipe.

[0011] Preferably, a drive ring is slidably connected to the rear end of the first connecting pipe, a connecting plate is rotatably connected to the outer circumference of the drive ring, and a threaded sleeve is fixedly installed on the front end face of the connecting plate.

[0012] By employing the above technical solution, the present invention provides a spiral brush for cleaning flexible endoscopes, which has at least the following beneficial effects: 1. This invention incorporates an integrally formed pusher plate, inclined plate, and barrier plate in the brush head assembly, with drainage holes pre-drilled in the inclined plate and pusher plate. During the cleaning process, disinfectant can be added through the drainage holes. With the assistance of the spiral brush, viscous residue can be quickly removed. As the pusher plate moves forward with the water flow, the residue is discharged through the endoscope's outlet. This improves the removal effect of viscous residue while preventing dirt and impurities from accumulating in the straight section of the endoscope and being unable to be discharged.

[0013] 2. By setting the bristles to be a spiral-shaped brush with a narrower front end, this invention can ensure that the spiral brush can be quickly inserted into the endoscope while gradually peeling it off by using a spiral propulsion method, avoiding blind spots of local scraping by the straight bristles. At the same time, the rotation of the spiral brush can drive the cleaning fluid to form a vortex flow, which enhances the flushing effect on the inner wall of the channel.

[0014] 3. This invention sets multiple sets of drainage holes in a conical shape. The conical drainage holes have a large bottom and a small top, forming a one-way flow channel. Disinfectant water can smoothly enter from the large bottom opening. The dirt and water scraped off by the spiral brush are difficult to flow back to the rear end of the inlet because the channel gradually narrows. Compared with the straight cylindrical inlet, the dirt backflow rate can be reduced, which can avoid the problem of the cleaned dirt flowing back to the other side of the push plate with the water flow and being difficult to be discharged in the horizontal section of the endoscope.

[0015] 4. This invention, through the cooperation of two sets of connecting pipes, threaded sleeves, drive rings, and connecting plates, enables the quick assembly and disassembly of the brush head assembly and the traction rod. On the one hand, it ensures the effectiveness of the brush head assembly, allowing the brush head assembly and the clogging cleaning assembly to be used with endoscopes of different inner diameters. On the other hand, it improves the utilization rate of the traction head and effectively reduces the cost of using the spiral brush.

[0016] 5. The present invention provides an outward protrusion and an inward concave cavity at each of the two sets of connecting pipes. The surfaces of the outward protrusion and the inward concave cavity are provided with granular protrusions. The outward protrusion is inserted into the inside of the inward concave cavity, which can effectively increase the surface roughness, thereby increasing the friction and making it more difficult for the second connecting pipe to be pulled out from the outside of the first connecting pipe, and further improving the stability of the connection between the two sets of connecting pipes. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the brush head assembly structure of the present invention; Figure 3 This is a schematic diagram of the auxiliary cleaning component structure of the present invention; Figure 4 This is a cross-sectional view of the auxiliary cleaning component and the second connecting pipe of the present invention. Figure 5 This is a cross-sectional view of the connection between the two sets of connecting pipes of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the two sets of connecting pipes of the present invention; Figure 7This is a schematic diagram of the first connecting pipe structure of the present invention; Figure 8 This is a schematic diagram of the traction rod structure of the present invention.

[0019] In the diagram: 1. Brush head assembly; 101. Brush head handle; 102. Protective head; 103. Spiral brush; 2. Traction rod; 201. Outer soft covering; 202. Spiral metal strip; 3. Handle; 4. Auxiliary cleaning components; 401, pusher plate; 4011, concave rounded corner; 402, inclined plate; 4021, drainage hole; 4022, barrier plate; 5. Connecting components; 501, First connecting pipe; 5011, Threaded sleeve; 5012, Drive ring; 5013, Connecting plate; 5014, Inner cavity; 502, Second connecting pipe; 5021, Outer protrusion. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] Addressing the current technical problem that, due to the length of flexible endoscopes, during cleaning, the endoscope is placed in a spiral position. As the brush head rotates and moves forward, it can only scrape away impurities adhering to the inner wall. This results in a buildup of dense impurities in the straight and curved sections of the endoscope channel, making complete removal difficult and requiring multiple passes, thus reducing cleaning efficiency. This embodiment provides a spiral brush for cleaning flexible endoscopes. This brush improves the removal of viscous residue while preventing the accumulation of dirt and impurities in the straight sections of the endoscope, thus avoiding the inability to drain them. Please refer to... Figure 1 - Figure 5This spiral brush for cleaning flexible endoscopes includes a brush head assembly 1 and a traction rod 2 connected to the end of the brush head assembly 1. The overall length of the traction rod 2 is 80-100cm, which can better adapt to the length of the endoscope. A handle 3 is fixedly installed at the end of the traction rod 2, including a brush head rod 101 and a protective head 102 fixedly installed at one end of the brush head rod 101. A spiral brush 103 with an overall conical structure is fixedly installed on the brush head rod 101. When rotating, the spiral brush 103 forms a continuous spiral scraping surface, and the contact area with the inner wall of the endoscope channel is relatively increased compared with the straight brush bristles, which can achieve scraping without dead angles, especially for mucus, tissue debris and other substances attached to the inner wall of the channel. Dirt can be gradually removed by spiral propulsion, avoiding blind spots of localized scraping by straight bristles. At the same time, the rotation of the spiral brush 103 can drive the cleaning liquid to form a vortex flow, enhancing the flushing effect on the inner wall of the channel. An auxiliary cleaning component 4 is fixedly installed at the other end of the brush head rod 101. The brush head component 1 and the auxiliary cleaning component 4 are integrally formed structures, and the diameter of the spiral brush 103 and the push plate 401 can be adapted to use with endoscopes of the same specification. The auxiliary cleaning component 4 is detachably set to the traction rod 2 through the connecting component 5. Before use, first select the brush head component 1 and the auxiliary cleaning component 4 that are compatible with the inner diameter of the endoscope, and install them with the traction rod 2 through the connecting component 5.

[0023] The auxiliary cleaning component 4 includes a pusher plate 401 fixedly installed at the end of the brush head rod 101. The diameter of the pusher plate 401 matches the inner diameter of the endoscope. A tilting plate 402 for drainage is fixedly installed at the front end of the pusher plate 401, and a barrier plate 4022 is fixedly installed at the front end of the tilting plate 402. The pusher plate 401, the tilting plate 402, and the barrier plate 4022 are arranged in a coaxial ring. It should be noted that the pusher plate 401 consists of two parts: a rigid plate in the middle, which facilitates the formation of drainage holes 4021, allowing water to enter the spiral brush 103 through the drainage holes 4021 and mix with the impurities protected inside the endoscope for easier cleaning. The outer ring of the pusher plate 401 is made of rubber, which allows the edges to better conform to the inner wall of the endoscope tube during cleaning, resulting in a more thorough cleaning of impurities inside the endoscope. For details, please refer to the appendix. Figure 3 During use, medical staff pick up the endoscope with one hand, align the inlet of the endoscope with the bottom of the faucet, and pick up the brush head assembly 1 with the other hand. They align the front end of the spiral metal strip 202 with the inlet of the endoscope and insert it inward to clean the impurities and dirt inside the endoscope. After the brush head assembly 1 extends out of the endoscope outlet, it is pulled back from inside the endoscope by the handle 3. This process is repeated to clean the inside of the endoscope.

[0024] Then, by rotating the handle 3, the spiral brush 103 at the front end slides and rotates to clean the inside of the endoscope. Although the water from the faucet can enter the endoscope inlet and work with the spiral brush 103 to remove dirt adhering to the inner wall, the endoscope is relatively long, and there are gaps between the brushes. This causes the cleaned impurities to easily accumulate in the straight section of the endoscope and cannot be discharged through the outlet. Figure 2 - Figure 4 As shown, the pusher plate 401 and the inclined plate 402 are respectively provided with interconnected drainage holes 4021. The inner diameter of the top of the drainage hole 4021 is 1 / 3 of the inner diameter of its bottom end. By setting the pusher plate 401 at the end of the brush head assembly 1, after the dirt adhering to it is removed by the spiral brush 103, the pusher plate 401 can directly move the removed dirt forward under the impact of the water flow, and finally discharge it through the outlet of the endoscope, thereby avoiding the accumulation of dirt and impurities in the straight section of the endoscope.

[0025] like Figure 8 As shown, the traction rod 2 includes a spiral metal strip 202 and an outer soft covering layer 201 wrapped around it. The spiral metal strip 202 is made of nickel-titanium alloy and has super elasticity, which can adapt to large-angle bending of the endoscope cavity. After deformation, there is no residual stress. Even if it is bent for a long time in the cavity, it can still return to a straight line after being removed, avoiding the traction rod 2 from getting tangled or stuck. At the same time, it has a certain strength to ensure the transmission efficiency of the brush head assembly 1. The outer soft covering layer 201 is made of PTFE polytetrafluoroethylene and has a certain degree of flexibility. It can deform synchronously with the spiral metal strip 202 and can protect the spiral metal strip 202.

[0026] Example 2

[0027] Based on Example 1, such as Figure 1 - Figure 4 As shown, through the meticulous design of the pusher plate 401, it is possible to ensure that the disinfectant can pass through the pusher plate 401 normally into the space between the front spiral brush 103 and the dirt. At the same time, during the movement of the pusher plate 401, it is possible to prevent the dirt and disinfectant that have been removed from flowing back to the other side of the pusher plate 401 in the opposite direction to the spiral brush 103 through the drainage hole 4021 at the pusher plate 401. The spiral brush 103 is made of medical-grade ultra-fine nylon filaments, and the filament bundles are arranged in a dense spiral. The length of the top bristles of the spiral brush 103 is shorter than that of the bottom bristles. The brush head rod 101 is made of hard metal, and the spiral brush 103 is embedded in the hole of the brush head rod 101. The tip of the spiral brush 103 can be accurately aligned with the endoscope channel entrance, avoiding the entrance jamming caused by the wide edge of the elliptical brush head, and ensuring the rapid insertion of the spiral brush 103.

[0028] Specifically, such as Figure 3 - Figure 4 As shown, the top bottom area of ​​the barrier plate 4022 and the inclined plate 402 is smaller than their own bottom bottom area, and the bottom bottom area of ​​the barrier plate 4022 is the same as that of the inclined plate 4022. The barrier plate 4022 has a cap-shaped bottom end, which can block multiple sets of drainage holes 4021. The outlet of the drainage hole 4021 is located on the inclined surface of the inclined plate 402. When the spiral brush 103 and the pusher plate 401 enter the endoscope, the water flows in through the inlet of the endoscope and flows through multiple sets of drainage holes 4021 into the port of the spiral brush 103. It mixes with the viscous residual liquid on the inner wall of the endoscope. With the cooperation of the spiral brush 103, the viscous residual liquid can be quickly removed and flow out with the water, improving the removal effect of viscous residual liquid.

[0029] Furthermore, by setting multiple sets of drainage holes 4021 into a conical shape, the conical drainage holes 4021 form a one-way flow channel with a large bottom and a small top. Disinfectant water can smoothly enter from the large bottom opening. The dirt and water scraped off by the spiral brush 103 are difficult to flow back to the rear end of the inlet due to the gradually narrowing channel. Compared with the straight inlet, the dirt backflow rate can be reduced, which can avoid the problem of the cleaned dirt flowing back to the other side of the push plate 401 with the water flow and being difficult to discharge in the horizontal section of the endoscope.

[0030] like Figure 3 As shown, multiple sets of drainage holes 4021 are evenly distributed around the brush head rod 101 as the axis in the inclined plate 402 and inside. The two ends of the pusher plate 401 are provided with concave rounded corners 4011. The circular structure of the pusher plate 401 can serve as a positioning reference to ensure that the spiral brush 103 is centered in the channel. At the same time, the rounded corner design at both ends of the pusher plate 401 can prevent scratching the end of the endoscope channel and can better insert the pusher plate 401 into the endoscope. The outer peripheral wall of the pusher plate 401 fits against the inner peripheral wall of the endoscope. When the spiral brush 103 moves axially, it can force the scraped dirt forward to avoid dirt remaining in the channel.

[0031] Example 3

[0032] Based on Embodiment 1, since the spiral brush 103 is prone to shedding or severe wear during long-term use, in order to improve the utilization rate of the traction rod 2, the brush head assembly 1 needs to be replaced in a timely manner to ensure the effective use of the spiral brush 103. Figure 4 - Figure 7As shown, the device also includes a connecting assembly 5 for easy disassembly of the brush head assembly 1 and the traction rod 2. The connecting assembly 5 includes a first connecting pipe 501 fixedly installed at the end of the traction rod 2 and a second connecting pipe 502 fixedly installed at the bottom of the pusher plate 401. The second connecting pipe 502 is provided with a threaded sleeve 5011, and an external thread corresponding to the internal thread of the threaded sleeve 5011 is formed on the outer circumference of the second connecting pipe 502. When disassembling the brush head assembly 1 to replace it with a new brush head assembly 1, first pick up the brush head assembly 1, accurately align the second connecting pipe 502 with the front end of the first connecting pipe 501, and then fit it onto the first connecting pipe 501. The outer peripheral wall of the first connecting pipe 501 is then pushed forward, and the threaded sleeve 5011 is pushed forward. When the threaded sleeve 5011 is connected to the second connecting pipe 502, the threaded sleeve 5011 is rotated to thread the threaded sleeve 5011 onto the outer peripheral wall of the second connecting pipe 502, thereby locking the two sets of connecting pipes after connection. This design avoids the problem that the brush head assembly 1 is small and the traction rod 2 is long, making it inconvenient to drive it to rotate. This design only requires rotating the threaded sleeve 5011 to lock the brush head assembly 1 and the traction rod 2, which is simple to operate and can improve the stability of the connection between the brush head assembly 1 and the traction rod 2.

[0033] To ensure that the brush head assembly 1 and auxiliary cleaning assembly 4 can be used with endoscopes of different inner diameters, the brush head assembly 1 and auxiliary cleaning assembly 4 can be replaced with those that are compatible with the inner diameter of the endoscope. This ensures that the replaced spiral brush 103 and pusher plate 401 are adapted to the inner diameter of the endoscope. Figure 5 As shown, a drive ring 5012 is slidably connected to the rear end of the first connecting pipe 501, and a connecting plate 5013 is rotatably connected to the outer circumference of the drive ring 5012. A threaded sleeve 5011 is fixedly installed on the front end face of the connecting plate 5013. In order to improve the utilization rate of the traction rod 2, the brush head assembly 1 at the front end of the traction rod 2 is designed to be detachable. A strip groove adapted to the drive ring 5012 is opened at the rear end of the first connecting pipe 501, so that the drive ring 5012 can drive the threaded sleeve 5011 to slide and realize the threaded connection with the second connecting pipe 502. The strip groove is not connected to the inner cavity 5014 at the front end, which can limit the position of the threaded sleeve 5011 after threaded connection.

[0034] Example 4

[0035] Based on Example 3, such as Figure 6 - Figure 7As shown, the first connecting pipe 501 and the second connecting pipe 502 are designed with greater detail to ensure the stability of their connection. Several protruding strips 5021 are fixedly installed on the inner circumference of the second connecting pipe 502 to increase the friction between the first connecting pipe 501 and the second connecting pipe 502. The front end of the first connecting pipe 501 has a concave cavity 5014 corresponding to the shape of the protruding strips 5021. The surfaces of the protruding strips 5021 and the concave cavity 5014 are provided with granular protrusions. After the two sets of connecting pipes are connected, the protruding strips 5021 are inserted into the concave cavity 5014, which can effectively increase the surface roughness, thereby increasing the friction and making it more difficult for the second connecting pipe 502 to be pulled out of the first connecting pipe 501, further improving the stability of the connection between the two sets of connecting pipes.

[0036] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A spiral brush for cleaning flexible endoscopes, comprising a brush head assembly (1) and an actuation rod (2) connected to the end of the brush head assembly (1), wherein a handle (3) is fixedly mounted on the end of the actuation rod (2), characterized in that: The brush head includes a brush head rod (101) and a protective head (102) fixedly installed at one end of the brush head rod (101). The brush head rod (101) is fixedly installed with a spiral brush (103) that has an overall conical structure. The other end of the brush head rod (101) is fixedly installed with an auxiliary cleaning component (4). The auxiliary cleaning component (4) is detachably connected to the traction rod (2) via a connecting component (5). The auxiliary cleaning component (4) includes a pusher plate (401) fixedly installed at the end of the brush head rod (101). The diameter of the pusher plate (401) matches the inner diameter of the endoscope. An inclined plate (402) for drainage is fixedly installed at the front end of the pusher plate (401). A barrier plate (4022) is fixedly installed at the front end of the inclined plate (402). The pusher plate (401), the inclined plate (402), and the barrier plate (4022) are arranged in a coaxial ring. The pusher plate (401) and the inclined plate (402) are respectively provided with interconnected drainage holes (4021), and the inner diameter of the top of the drainage hole (4021) is 1 / 3 of the inner diameter of its bottom end.

2. The spiral brush for cleaning flexible endoscopes according to claim 1, characterized in that: The traction rod (2) includes a spiral metal strip (202) and an outer soft covering layer (201) wrapped around it. The spiral metal strip (202) is made of nickel-titanium alloy, and the outer soft cladding layer (201) is made of PTFE polytetrafluoroethylene.

3. A spiral brush for cleaning flexible endoscopes according to claim 1, characterized in that: The spiral brush (103) is made of medical-grade ultrafine nylon filaments, with the filament bundles arranged in a dense spiral. The length of the top brush of the spiral brush (103) is shorter than that of the bottom brush. The brush head rod (101) is made of hard metal, and the spiral brush (103) is embedded in the hole of the brush head rod (101).

4. A spiral brush for cleaning flexible endoscopes according to claim 1, characterized in that: The top bottom area of ​​the barrier plate (4022) and the inclined plate (402) is smaller than their own bottom bottom area, the bottom bottom area of ​​the barrier plate (4022) is the same as the bottom bottom area of ​​the inclined plate (402), and the liquid outlet of the drainage hole (4021) is located on the inclined surface of the inclined plate (402).

5. A spiral brush for cleaning flexible endoscopes according to claim 1, characterized in that: Multiple sets of drainage holes (4021) are evenly distributed on the inclined plate (402) and inside with the brush head rod (101) as the axis, and the two ends of the pusher plate (401) are provided with concave rounded corners (4011).

6. A spiral brush for cleaning flexible endoscopes according to claim 1, characterized in that: The connecting assembly (5) includes a first connecting pipe (501) fixedly installed at the end of the traction rod (2) and a second connecting pipe (502) fixedly installed at the bottom of the pusher plate (401). The second connecting pipe (502) is provided with a threaded sleeve (5011), and an external thread corresponding to the internal thread of the threaded sleeve (5011) is opened on the outer periphery of the second connecting pipe (502).

7. A spiral brush for cleaning flexible endoscopes according to claim 6, characterized in that: The rear end of the first connecting pipe (501) is slidably connected to a driving ring (5012), and the outer circumference of the driving ring (5012) is rotatably connected to a connecting plate (5013). The threaded sleeve (5011) is fixedly installed on the front end face of the connecting plate (5013).

8. A spiral brush for cleaning flexible endoscopes according to claim 6, characterized in that: The inner circumference of the second connecting pipe (502) is fixedly equipped with a plurality of outward protruding strips (5021) for increasing the connecting friction between the first connecting pipe (501) and the second connecting pipe (502). The front end of the first connecting tube (501) has an inner cavity (5014) corresponding to the shape of the outer protrusion (5021) on its outer periphery, and the surfaces of the outer protrusion (5021) and the inner cavity (5014) are provided with granular protrusions.

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