Cleaning device for endoscope lenses

Abstract

The application relates to a cleaning device for an endoscope lens. The application specifically comprises a cleaning tube inserted from a forceps insertion port of an endoscope, a cleaning brush arranged in the cleaning tube, and an operating part used for pushing the end part of the cleaning brush to extend out of or retract into the cleaning tube; when the operating part pushes the end part of the cleaning brush to extend out of the cleaning tube, the end part of the cleaning tube is opened; when the operating part pushes the end part of the cleaning brush to retract into the cleaning tube, the end part of the cleaning tube is closed, and the cleaning brush rotates when the operating part rotates. The application uses a channel provided by the endoscope itself for passing medical accessories to reach the end face of the front end part of the endoscope, and the end face is cleaned. The objective lens and the light guide lens on the end face of the front end part can be directly cleaned in the human body without taking the insertion part out of the human body after being contaminated, and the structure of the endoscope does not need to be changed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a cleaning device for endoscope lenses. Background Technology

[0002] An endoscope is a diagnostic instrument that integrates traditional optics, ergonomics, precision mechanics, modern electronics, mathematics, and software. It contains an image sensor, optical lens, light source, and mechanical devices, and can enter the stomach through the mouth or other natural orifices. Endoscopes can visualize lesions that X-rays cannot, thus they are widely used in the medical field. However, during endoscopic examinations and treatments, the objective lens and optical guide lens are easily contaminated by mucus and blood inside organs. This can affect the objective lens's ability to capture the organ's morphology and the optical guide's ability to provide illumination for medical instruments inside the body, thereby impacting the examination and treatment results. In existing technologies, when the objective lens and optical guide lens of an endoscope become contaminated with mucus and blood from inside organs, the endoscope's insertion part is usually removed from the body, the objective lens and optical guide lens are cleaned, and then the insertion part is reinserted into the body for examination and treatment. However, the repeated insertion and removal of the insertion part from the body poses risks to the patient's personal safety and makes the use of the endoscope cumbersome and time-consuming.

[0003] Chinese Patent CN111432707A, published on 2020-07-17, discloses an imaging endoscope system comprising a base unit, a manual controller, an umbilical portion releasably connecting the base unit and the manual controller, and an insertion portion. The insertion portion has a proximal end connected to the manual controller and a distal end for inserting into a subject, the distal end having a manipulating portion and a distal tip. The manual controller includes at least one manipulating controller for controlling the bending of the manipulating portion, and the distal tip includes a light source for illuminating a region of interest and an imaging chip for imaging the region of interest. The manual controller, umbilical portion, and insertion portion are all disposable. The base unit is configured for reusability. However, after the distal tip of this endoscope system is inserted into the subject, if the light source lens and imaging lens become contaminated with mucus and blood from inside the organs, the insertion portion must be removed from the subject. Repeated insertion and removal of the insertion portion into the subject not only poses a risk to the patient's safety but also makes the use of the endoscope cumbersome and time-consuming. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a cleaning device for endoscope lenses that can clean the objective lens and optical guide lens of the endoscope while it is in use inside the human body, without altering the structure of the endoscope.

[0005] This invention proposes a cleaning device for an endoscope lens, comprising a cleaning tube for insertion into the forceps insertion port of the endoscope and extension from the forceps exit port of the endoscope, a cleaning brush disposed in the cleaning tube, and an operating part for pushing the end of the cleaning brush to extend or retract from the cleaning tube; the operating part is disposed at the end of the cleaning tube protruding from the forceps insertion port of the endoscope, the end of the cleaning brush extends or retracts from the end of the cleaning tube protruding from the forceps exit port of the endoscope, when the operating part pushes the end of the cleaning brush to extend from the cleaning tube, the end of the cleaning tube opens; when the operating part pushes the end of the cleaning brush to retract in the cleaning tube, the end of the cleaning tube closes, and the cleaning brush rotates when the operating part rotates.

[0006] Furthermore, the cleaning brush includes a connecting rod connected at one end to the operating part, and a brush head disposed at the other end of the connecting rod. The brush head extends out of the cleaning tube under the push of the operating part and retracts into the cleaning tube under the push of the operating part.

[0007] Furthermore, the brush head includes two columns disposed opposite to each other at the other end of the connecting rod, two brush rods rotatably connected to the two columns respectively, and a torsion spring connected at one end to one of the brush rods and at the other end to the other brush rod.

[0008] Furthermore, the brush head also includes a limiting rod disposed between the two columns, and the torsion spring is sleeved on the limiting rod.

[0009] Furthermore, a flexible pad is provided on one side of the brush rod.

[0010] Furthermore, the cleaning tube includes a tube body that is inserted into the forceps insertion port of the endoscope and extends out of the forceps exit port of the endoscope, and a sleeve provided at the end of the tube body that protrudes from the forceps insertion port of the endoscope. When the operating part moves axially on the sleeve, it pushes the brush head to extend or retract from the tube body.

[0011] Furthermore, the outer wall of the sleeve is provided with a strip-shaped guide hole in the axial direction. The operating part includes a movable column disposed in the sleeve and connected to the connecting rod at the bottom, and a guide rod connected to the outer wall of the movable column. The guide rod extends out of the sleeve from the strip-shaped guide hole and cooperates with the strip-shaped guide hole.

[0012] Furthermore, the operating part also includes a movable sleeve fitted on the outside of the sleeve, and one end of the guide rod extending out of the strip-shaped guide hole is connected to the inner wall of the movable sleeve.

[0013] Furthermore, the operating part also includes two operating rings disposed opposite each other on the outer wall of the movable sleeve, and the end of the sleeve away from the tube body is disposed at a finger ring for limiting the finger.

[0014] Furthermore, the movable sleeve is provided with a through hole, the sleeve is provided with a threaded hole, and a bolt with one end inserted into the through hole is also included. When the brush head extends out of the cleaning tube and opens under the push of the operating part, one end of the bolt passes through the through hole and is screwed into the threaded hole.

[0015] The endoscope lens cleaning device of the present invention has the following beneficial effects:

[0016] (1) This cleaning device uses the channel provided by the endoscope itself for medical accessories to pass through to reach the end face of the end end of the endoscope and clean it. This means that if the objective lens and optical guide lens on the end face of the end end are contaminated by mucus and blood in the organs, the insertion part does not need to be removed from the human body. The objective lens and optical guide lens on the end face of the end end can be cleaned directly inside the human body without modifying the structure of the endoscope.

[0017] (2) The cleaning brush of this cleaning device includes a connecting rod connected to the operating part at one end and a brush head at the other end of the connecting rod. When the brush head is pushed out of the cleaning tube by the operating part, it opens to clean the entire end face of the end of the endoscope. When the brush head is pushed into the cleaning tube by the operating part, it closes up, so that this cleaning device can be pulled out from the endoscope through the channel for medical accessories to pass through, without affecting the operation of the endoscope, so that the endoscope can continue to work.

[0018] (3) The other end of the connecting rod of this cleaning device is provided with two opposing columns. Each column is rotatably connected to a brush rod. A torsion spring is provided between the two columns. The two ends of the torsion spring are connected to the two brush rods respectively. Thus, the brush rod automatically opens after the brush head extends out of the tube through the torsion spring. When the operating part applies force, the brush head can automatically retract into the tube.

[0019] (4) The end of the connecting rod of this cleaning device is provided with a limiting rod. The torsion spring is sleeved on the limiting rod to fix the torsion spring, so that the opening or closing movement of the two brush rods is more stable and accurate, and thus the structure of this cleaning device is more stable.

[0020] (5) A flexible pad is provided on one side of the brush rod of this cleaning device, which can make the brush rod fit more tightly with the end face of the end of the endoscope, thus making the cleaning effect of this cleaning device better, and can also prevent the brush rod from scratching the objective lens and the optical guide lens when cleaning the objective lens and the optical guide lens, thus affecting their use.

[0021] (6) The cleaning tube of this cleaning device includes a tube body and a sleeve. The tube body is inserted into the forceps insertion port of the endoscope and extends out from the forceps exit port of the endoscope. The sleeve is located at the end of the tube body that protrudes from the forceps insertion port. The operating part moves axially on the sleeve, thereby extending or retracting the brush head from the end of the tube body that protrudes from the forceps exit port of the endoscope via the connecting rod.

[0022] (7) The strip-shaped guide holes of this cleaning device are axially distributed along the outer wall of the sleeve. Therefore, when the guide rod moves through the strip-shaped guide holes, it moves axially along the sleeve. The axial movement of the guide rod along the sleeve drives the moving column to move axially within the sleeve, which in turn pushes the brush head to extend or retract from the tube through the connecting rod.

[0023] (8) The sleeve of this cleaning device is provided with a threaded hole. When the brush head is pushed out of the cleaning tube and opened by the operation part, the threaded hole on the sleeve is aligned with the center of the through hole on the movable sleeve. At this time, the bolt is inserted into one end of the through hole and then screwed into the threaded hole to fix the movable sleeve on the sleeve, so that the brush head is kept open outside the cleaning tube. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In these drawings, similar reference numerals are used to denote similar elements.

[0025] Figure 1 This is a schematic diagram of the structure of a cleaning brush end protruding from a cleaning device for an endoscope lens according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the retractable cleaning brush end of a cleaning device for an endoscope lens according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the structure of an endoscope for cleaning an endoscope lens according to an embodiment of the present invention;

[0028] Figure 4 This invention provides a cleaning device for an endoscope lens according to an embodiment of the present invention. Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the cleaning tube of an endoscope lens cleaning device according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram showing the connection between the operating part and the cleaning brush of an endoscope lens cleaning device according to an embodiment of the present invention.

[0031] Figure 7 This invention provides a cleaning device for an endoscope lens. Figure 6 Enlarged view of point B in the middle;

[0032] Figure 8 This is a schematic diagram of the operation section of an endoscope lens cleaning device according to an embodiment of the present invention.

[0033] In the diagram: 1. Endoscope; 11. Handheld part; 111. Pliers insertion port; 12. Insertion part; 13. Front end; 131. Objective lens; 132. Light guide lens; 133. Pliers exit jaw; 2. Cleaning tube; 21. Tube body; 22. Sleeve; 221. Strip guide hole; 222. Finger ring; 223. Threaded hole; 3. Cleaning brush; 31. Connecting rod; 32. Brush head; 321. Column; 322. Brush rod; 323. Torsion spring; 324. Limiting rod; 4. Operating part; 41. Moving column; 42. Guide rod; 43. Moving sleeve; 431. Operating ring; 432. Through hole; 5. Bolt. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0035] An endoscope lens cleaning device according to an embodiment of the present invention includes a cleaning tube 2 for insertion into a forceps insertion port 111 of an endoscope 1 and extension from a forceps exit port 133 of the endoscope 1, a cleaning brush 3 disposed in the cleaning tube 2, and an operating part 4 for pushing the end of the cleaning brush 3 to extend or retract from the cleaning tube 2. The operating part 4 is disposed at the end of the cleaning tube 2 that protrudes from the forceps insertion port 111 of the endoscope 1. The end of the cleaning brush 3 extends or retracts from the end of the cleaning tube 2 that protrudes from the forceps exit port 133 of the endoscope 1. When the operating part 4 pushes the end of the cleaning brush 3 to extend from the cleaning tube 2, the end of the cleaning tube 2 opens. When the operating part 4 pushes the end of the cleaning brush 3 to retract into the cleaning tube 2, the end of the cleaning tube 2 closes. The cleaning brush 3 rotates when the operating part 4 rotates. See [details omitted for brevity]. Figure 1 , Figure 2 , Figure 3 and Figure 4 .

[0036] When using endoscope 1 to examine or treat a human body, the insertion part 12 is inserted into the human body through the handheld part 11. A front end 13 is provided at the front end of the insertion part 12, containing an objective lens and a light guide. The end face of the front end 13 has an objective lens 131, a light guide lens 132, and a forceps exit jaw 133. When using endoscope 1 for examination, the objective lens in the front end 13 captures the morphology of organs in color images, and transmits the captured organ morphology to the color display of the main body of the video system. The morphology of the organs is observed through the color images viewed on the color display. When using endoscope 1 for treatment, the handheld part 11 has a forceps insertion port 111 for inserting medical instruments. Medical instruments from the operating part 4 are inserted through the forceps insertion port 111 and extend through the forceps exit jaw 133 on the front end 13 to process human organs.

[0037] When using endoscope 1 for examination and treatment, the insertion part 12 of endoscope 1 is inserted into the human body, and the front end 13 of the insertion part 12 is also located inside the human body. At this time, the objective lens 131 and the light guide lens 132 located on the end face of the front end 13 are easily contaminated by mucus and blood in the organs, which affects the objective lens's ability to capture the shape of the organs and the light guide's ability to provide supplementary light for the medical device's operation inside the human body, thus affecting the examination and treatment results. In the prior art, after the objective lens 131 and the light guide lens 132 on the end face of the front end 13 are contaminated by mucus and blood in the organs, the insertion part 12 is usually removed from the human body, the objective lens 131 and the light guide lens 132 on the end face of the front end 13 are cleaned, and then the insertion part 12 is inserted into the human body for examination and treatment. However, the repeated insertion and removal of the insertion part 12 inside the human body poses a risk to the patient's personal safety and makes the use of endoscope 1 cumbersome and wasteful of time and energy.

[0038] In this application, the cleaning tube 2 is inserted into the forceps insertion port 111 on the endoscope 1 and extends out from the forceps outlet 133. After the end of the cleaning tube 2 extends out from the forceps outlet 133, the end of the cleaning brush 3 is pushed out from the cleaning tube 2 by the operating part 4. The end of the cleaning brush 3 automatically opens after extending out of the cleaning tube 2. Since the operating part 4 is located at the end of the cleaning tube 2 that protrudes from the forceps insertion port 111 of the endoscope 1, and the end of the cleaning brush 3 extends from the end of the cleaning tube 2 that protrudes from the forceps outlet 133 of the endoscope 1, and the forceps outlet 133 is located on the end face of the front end 13, the opened end of the cleaning brush 3 is in contact with the end face of the front end 13. At this time, when the operating part 4 is rotated outside the operating part 4 of the endoscope 1, the cleaning brush 3 will be rotated, thereby cleaning the end face of the front end 13 of the endoscope 1 by the opened end of the cleaning brush 3. After cleaning is completed, the end of the cleaning brush 3 is pushed into the cleaning tube 2 by the operating unit 4. The open end of the cleaning brush 3 will automatically retract, so that the end of the cleaning brush 3 can pass through the exit jaw 133, and the cleaning device that has been cleaned can be pulled out from the channel for medical accessories in the endoscope 1.

[0039] This cleaning device utilizes the channel provided within the endoscope 1 itself for medical accessories to pass through, reaching and cleaning the end face of the front end 13 of the endoscope 1. This allows for cleaning of the objective lens 131 and optical guide lens 132 on the end face of the front end 13 from inside the body, even if they are soiled by mucus and blood from organs. Furthermore, it eliminates the need to remove the insertion part 12 from the body, allowing for direct cleaning of the objective lens 131 and optical guide lens 132 from within the body, without requiring any modifications to the structure of the endoscope 1. Since the endoscope 1 is a precision instrument and expensive, modifying its structure would incur significant manufacturing costs.

[0040] In this embodiment, the cleaning brush 3 includes a connecting rod 31 connected to the operating part 4 at one end, and a brush head 32 disposed at the other end of the connecting rod 31. The brush head 32 extends out of the cleaning tube 2 under the push of the operating part 4 and retracts into the cleaning tube 2 under the push of the operating part 4. See [link to specific details] for details. Figure 6The cleaning brush 3 includes a connecting rod 31 and a brush head 32. One end of the connecting rod 31 is connected to the operating part 4, and the other end is connected to the brush head 32. When the operating part 4 is moved, the force is applied to the brush head 32 through the connecting rod 31, thereby pushing the brush head 32 out of the cleaning tube 2 or retracting the brush head 32 into the cleaning tube 2. When the brush head 32 extends out of the cleaning tube 2, it automatically opens, allowing the brush head 32 to clean the entire end face of the anterior end portion 13 of the endoscope 1. When the brush head 32 needs to be retracted into the cleaning tube 2, the force of the operating part 4 is applied to the brush head 32 through the connecting rod 31, and at the same time, the inner wall of the cleaning tube 2 will squeeze the brush head 32, causing it to close and retract into the cleaning tube 2. This allows the brush head 32 to pass through the exit jaw 133 on the end face of the anterior end portion 13. After the cleaning work is completed, this cleaning device can be withdrawn from the channel for medical accessories to pass through the endoscope 1 without affecting the operation of the endoscope 1, allowing the endoscope 1 to continue working.

[0041] In this embodiment, the brush head 32 includes two columns 321 disposed opposite to each other at the other end of the connecting rod 31, two brush rods 322 rotatably connected to the two columns 321 respectively, and a torsion spring 323 connected at one end to one brush rod 322 and at the other end to the other brush rod 322. See below for specific effects. Figure 7 Two opposing columns 321 are provided at the other end of the connecting rod 31. A brush rod 322 is rotatably connected to each column 321. A torsion spring 323 is provided between the two columns 321, with its two ends connected to the two brush rods 322 respectively. When the brush head 32 retracts into the cleaning tube 2, the two brush rods 322 are compressed along the circumference of the cleaning tube 2 under the pressure of the inner wall of the cleaning tube 2, and the torsion spring 323 is in a compressed state. When the operating part 4 pushes the brush head 32 out of the cleaning tube 2, the torsion spring 323 pushes the two brush rods 322 to open along the circumference of the cleaning tube 2 under the elastic force of restoring its own deformation. This allows the brush rods 322 to clean the area of ​​the end face of the end face 13 beyond the diameter of the cleaning tube 2 when they are in close contact with the end face 13 of the end end of the endoscope 1. This allows the brush rods 322 to clean the objective lens 131 and the optical guide lens 132 on the end face 13 of the end end of the endoscope 1.

[0042] After cleaning is completed, the brush rod 322 is moved towards the inside of the cleaning tube 2 by moving the operating part 4. At this time, the inner wall of the cleaning tube 2 will squeeze the brush rod 322. When the squeezing force exceeds the elastic force of the torsion spring 323, the two brush rods 322 will retract around the cleaning tube 2 and compress the torsion spring 323, so that the two brush rods 322 can retract into the cleaning tube 2, making it convenient for them to pass through the jaws 133 on the end face of the front end 13.

[0043] In this embodiment, the brush head 32 also includes a limiting rod 324 disposed between the two uprights 321, and a torsion spring 323 sleeved on the limiting rod 324. See below for specific effects. Figure 7A limiting rod 324 is also provided between the two uprights. The torsion spring 323 is sleeved on the limiting rod 324, thereby limiting the position of the torsion spring 323 and preventing the position of the torsion spring 323 from changing during compression or opening, which would cause the opening or closing movement of the two brush rods 322 to be inaccurate and unstable. Therefore, in this application, a limiting rod 324 is provided at the end of the connecting rod 31, and the torsion spring 323 is sleeved on the limiting rod 324, thereby fixing the torsion spring 323, making the opening or closing movement of the two brush rods 322 more stable and accurate, and thus making the structure of this cleaning device more stable.

[0044] In this embodiment, a flexible pad is provided on one side of the brush rod 322. When the operating part 4 pushes the brush head 32 out of the cleaning tube 2, the torsion spring 323, under the elastic force of restoring its own deformation, pushes the two brush rods 322 to open circumferentially along the cleaning tube 2. At this time, one side of the brush rod 322 is in close contact with the end face of the front end 13 of the endoscope 1. The flexible pad is provided on this side of the brush rod 322. On the one hand, the elastic force of the flexible pad can make the brush rod 322 fit more tightly with the end face of the front end 13 of the endoscope 1, so that when the brush rod 322 rotates, it can better clean the front end. The objective lens 131 and the light guide lens 132 on the end face of the endoscope 13 can be cleaned better. On the other hand, a flexible pad is provided on the side where the brush rod 322 is in close contact with the end face of ...

[0045] In this embodiment, the cleaning tube 2 includes a tube body 21 that is inserted into the forceps insertion port 111 of the endoscope 1 and extends out of the forceps exit port 133 of the endoscope 1, and a sleeve 22 disposed at the end of the tube body 21 that protrudes from the forceps insertion port 111 of the endoscope 1. When the operating part 4 moves axially on the sleeve 22, it pushes the brush head 32 to extend or retract from the tube body 21. See [the specific effect description]. Figure 5 and Figure 6 The cleaning tube 2 includes a tube body 21 and a sleeve 22. The tube body 21 is inserted into the forceps insertion port 111 of the endoscope 1 and extends out from the forceps exit port 133 of the endoscope 1. The sleeve 22 is located at the end of the tube body 21 that protrudes from the forceps insertion port 111. The operating part 4 is moved axially on the sleeve 22, thereby extending or retracting the brush head 32 from the end of the tube body 21 that protrudes from the forceps exit port 133 of the endoscope 1 via the connecting rod 31.

[0046] The reason for axially moving the operating part 4 on the sleeve 22 to push the brush head 32 out or retract it from the tube body 21 is to facilitate the use of this cleaning device. If the operating part 4 only moves at the end of the cleaning tube 2 that protrudes from the endoscope 1 forceps insertion port 111, there is no limiting effect between the operating part 4 and the cleaning tube 2. When pushing or retracting the brush head 32 out of the cleaning tube 2 through the operating part 4, the cleaning tube 2 still needs to be fixed so that the brush head 32 can move relative to the cleaning tube 2. However, when the operating part 4 moves axially on the sleeve 22 of the cleaning tube 2, and the tube body 21 and the sleeve 22 are an integral structure, the brush head 32 can move relative to the tube body 21.

[0047] In this application, the endoscope 1 is actually inserted through the forceps insertion port 111. The tube body 21 and the connecting rod 31 extend out from the forceps outlet 133. When the endoscope 1 is used, the insertion part 12 may bend during the process of being inserted into the human body. Therefore, the tube body 21 and the connecting rod 31 need to pass through the channel in the insertion part 12 and also need to have a certain bending ability. Therefore, the tube body 21 and the connecting rod 31 need to be made of a material with a certain elasticity, such as plastic, elastic alloy, etc.

[0048] In this embodiment, the outer wall of the sleeve 22 is provided with a strip-shaped guide hole 221 in the axial direction. The operating part 4 includes a movable column 41 disposed in the sleeve 22 and connected to the connecting rod 31 at the bottom, and a guide rod 42 connected to the outer wall of the movable column 41. The guide rod 42 extends out of the sleeve 22 from the strip-shaped guide hole 221 and cooperates with the strip-shaped guide hole 221. For specific effects, see Figure 5 and Figure 8 The operating unit 4 includes a movable column 41 and a guide rod 42. The movable column 41 is disposed in the sleeve 22. One end of the connecting rod 31 is connected to the bottom of the movable column 41. A strip-shaped guide hole 221 is axially provided on the outer wall of the sleeve 22. One end of the guide rod 42 is connected to the side wall of the movable column 41, and the other end extends out of the strip-shaped guide hole 221 and engages with it. Since the strip-shaped guide hole 221 is axially distributed along the outer wall of the sleeve 22, the guide rod 42 moves axially along the sleeve 22 when it moves through the strip-shaped guide hole 221. The axial movement of the guide rod 42 along the sleeve 22 drives the movable column 41 to move axially within the sleeve 22, which in turn pushes the brush head 32 to extend or retract from the tube body 21 via the connecting rod 31.

[0049] In this application, to achieve axial movement along the sleeve 22 within the strip guide hole 221, pushing the brush head 32 to extend or retract from the tube body 21, the axial length of the strip guide hole 221 on the outer wall of the sleeve 22 can be configured in two ways: The first way is that the length of the strip guide hole 221 is equal to the sum of the length of the brush head 32 and the thickness of the guide rod 42. In this case, when the guide rod 42 moves to the bottom of the strip guide hole 221, the brush head 32 just extends out of the tube body 21. When the guide rod 42 moves to the top of the strip-shaped guide hole 221, the extended brush head 32 just retracts into the tube body 21. In the second case, the length of the strip-shaped guide hole 221 is greater than the sum of the length of the brush head 32 and the thickness of the guide rod 42. In this case, when the guide rod 42 moves to the bottom of the strip-shaped guide hole 221, a portion of the connecting rod 31 and the brush head 32 both extend out of the tube body 21. When the guide rod 42 moves to the top of the strip-shaped guide hole 221, the brush head 32 retracts into the tube body 21 and moves towards the inside of the tube body 21. In this application, the preferred length of the strip-shaped guide hole 221 axially distributed on the outer wall of the sleeve 22 is the first case.

[0050] In this embodiment, the operating part 4 also includes a movable sleeve 43 sleeved on the outside of the sleeve 22, and one end of the guide rod 42 extending out of the strip-shaped guide hole 221 is connected to the inner wall of the movable sleeve 43. See [link to specific details] for details. Figure 8 In this application, a movable sleeve 43 is also provided on the outer side of the sleeve 22. One end of the guide rod 42 is connected to the side wall of the movable column 41, and the other end extends out of the strip-shaped guide hole 221 and connects to the inner wall of the movable sleeve 43. Thus, when the movable sleeve 43 moves axially along the sleeve 22, the guide rod 42 drives the movable column 41 to move axially within the sleeve 22, which in turn drives the brush head 32 to extend or retract from the tube body 21 via the connecting rod 31. This arrangement is to further enhance the structural stability of this cleaning device. Compared to directly moving the guide rod 42 axially along the sleeve 22 within the strip-shaped guide hole 221, the axial movement along the sleeve 22 via the movable sleeve 43 fitted on the outer side of the sleeve 22 is more stable, thus making the movement of the brush head 32 extending or retracting from the tube body 21 more stable.

[0051] In this embodiment, the operating part 4 also includes two operating rings 431 disposed opposite to each other on the outer wall of the movable sleeve 43. The end of the sleeve 22 away from the tube body 21 is provided with a finger ring 222 for limiting the finger. See the specific effect below. Figure 5 and 8Two operating rings 431 are arranged opposite each other on the outer wall of the movable sleeve 43. A finger ring 222 is also provided at the end of the sleeve 22 away from the connection with the tube body 21. When it is necessary to push the brush head 32 out of the tube body 21 or retract it, one finger can pass through the finger ring 222 to fix the sleeve 22, while the other fingers act on the two operating rings 431, causing the movable sleeve 43 and the sleeve 22 to move relative to each other, thereby causing the brush head 32 to move relative to the tube body 21. This structure of the operating part 4 and the sleeve 22 allows for the extension or retraction of the brush head 32 from the tube body 21 with one hand, making the cleaning device more convenient to use.

[0052] In this embodiment, the movable sleeve 43 is provided with a through hole 432, and the sleeve 22 is provided with a threaded hole 223. It also includes a bolt 5 with one end inserted into the through hole 432. When the brush head 32 extends out of the cleaning tube 2 under the push of the operating part 4, one end of the bolt 5 passes through the through hole 432 and is screwed into the threaded hole 223. See [link to specific details] for details. Figure 5 , Figure 6 and Figure 8 A through hole 432 is provided on the movable sleeve 43, and one end of the bolt 5 is inserted into the through hole 432 from the outside of the movable sleeve 43. A threaded hole 223 is provided on the sleeve 22. When the brush head 32 is pushed out of the cleaning tube 2 and opened by the operating part 4, the threaded hole 223 on the sleeve 22 is aligned with the center of the through hole 432 on the movable sleeve 43. When the length of the strip guide hole 221 axially distributed on the outer wall of the sleeve 22 is in the first case, the guide rod 42 moves to the bottom of the strip guide hole 221, and the threaded hole 223 on the sleeve 22 is aligned with the center of the through hole 432 on the movable sleeve 43. At this time, one end of the bolt 5 is inserted into the through hole 432 and then screwed into the threaded hole 223, thereby fixing the movable sleeve 43 on the sleeve 22, so that the brush head 32 remains open outside the cleaning tube 2.

[0053] In order for the brush head 32 to effectively clean the objective lens 131 and the optical guide lens 132 on the front end face 13, one side of the brush head 32 must be kept in close contact with the front end face 13. At this time, while the side of the brush head 32 applies force to the front end face 13, the front end face 13 also generates a reaction force on the side of the brush head 32. Since the two brush heads 32 are opened under the force of the torsion spring 323, if the reaction force generated by the front end face 13 is greater than the elastic force of the torsion spring 323, the torsion spring 323 will be compressed, thus preventing the side of the brush head 32 from maintaining a tight contact with the front end face 13.

[0054] Therefore, in this application, when the brush head 32 extends out of the cleaning tube 2 and opens under the push of the operating part 4, the movable sleeve 43 is fixed on the sleeve 22 by screwing one end of the bolt 5 through the through hole 432 and the threaded hole 223. This makes the front end 13 face the side of the brush head 32 generate a reaction force that cannot compress the torsion spring 323, thereby keeping the brush head 32 in an open state outside the cleaning tube 2 and in close contact with the front end 13 face, thus making the cleaning effect of this cleaning device better.

[0055] The above-described contents can be implemented individually or in various combinations, and these variations are all within the protection scope of this invention.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cleaning device for an endoscope lens, characterized in that: The device includes a cleaning tube (2) for insertion through the forceps insertion port (111) of an endoscope (1) and extension through the forceps exit port (133) of the endoscope (1), a cleaning brush (3) disposed in the cleaning tube (2), and an operating part (4) for pushing the end of the cleaning brush (3) out of or retracting from the cleaning tube (2); the operating part (4) is disposed at the end of the cleaning tube (2) that protrudes from the forceps insertion port (111) of the endoscope (1), and the end of the cleaning brush (3) extends or retracts from the end of the cleaning tube (2) that protrudes from the forceps exit port (133) of the endoscope (1); when the operating part (4) pushes the end of the cleaning brush (3) out of the cleaning tube (2), the end of the cleaning tube (2) opens; when the operating part (4) pushes the end of the cleaning brush (3) to retract into the cleaning tube (2), the end of the cleaning tube (2) closes, and the cleaning brush (3) rotates when the operating part (4) rotates; The cleaning brush (3) includes a connecting rod (31) connected to the operating part (4) at one end, and a brush head (32) at the other end of the connecting rod (31). The brush head (32) extends out of the cleaning tube (2) under the push of the operating part (4); the brush head (32) retracts into the cleaning tube (2) under the push of the operating part (4). The brush head (32) includes two columns (321) arranged opposite to each other at the other end of the connecting rod (31), two brush rods (322) rotatably connected to the two columns (321) respectively, and a torsion spring (323) with one end connected to one brush rod (322) and the other end connected to the other brush rod (322). The two brush rods (322) are symmetrically arranged on the two columns (321). The cleaning tube (2) includes a tube body (21) that is inserted into the forceps insertion port (111) of the endoscope and extends out of the forceps exit port (133) of the endoscope, and a sleeve (22) provided at one end of the tube body (21) that protrudes from the forceps insertion port (111). When the operating part (4) moves axially on the sleeve (22), it pushes the brush head (32) to extend or retract from the tube body (21). The sleeve (22) has an axially oriented guide hole (221) on its outer wall. The operating part (4) includes a movable column (41) disposed in the sleeve (22) and connected to the connecting rod (31) at its bottom, and a guide rod (42) connected to the outer wall of the movable column (41). The guide rod (42) extends out of the sleeve (22) from the strip guide hole (221) and cooperates with the strip guide hole (221).

2. The endoscope lens cleaning device as described in claim 1, characterized in that: The brush head (32) also includes a limiting rod (324) disposed between the two columns (321), and the torsion spring (323) is sleeved on the limiting rod (324).

3. The endoscope lens cleaning device as described in claim 1, characterized in that: A flexible pad is provided on one side of the brush rod (322).

4. The endoscope lens cleaning device as described in claim 1, characterized in that: The operating part (4) also includes a movable sleeve (43) sleeved on the outside of the sleeve (22), and one end of the guide rod (42) extending out of the strip guide hole (221) is connected to the inner wall of the movable sleeve (43).

5. The endoscope lens cleaning device as described in claim 4, characterized in that: The operating part (4) also includes two operating rings (431) disposed opposite to each other on the outer wall of the movable sleeve (43), and the end of the sleeve (22) away from the connection with the tube body (21) is disposed at a finger ring (222) for limiting the finger.

6. The endoscope lens cleaning device as described in claim 5, characterized in that: The movable sleeve (43) is provided with a through hole (432), the sleeve (22) is provided with a threaded hole (223), and also includes a bolt (5) with one end inserted into the through hole (432). When the brush head (32) extends out of the cleaning tube (2) and opens under the push of the operating part (4), one end of the bolt (5) passes through the through hole (432) and is screwed into the threaded hole (223).

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