A bronchoscope lens cleaning device

Abstract

The application provides a bronchoscope lens cleaning device, which comprises a bronchoscope end head, an observation lens and an operation hole arranged at the front end of the bronchoscope end head, a clasp ring, a rotating rod, a driving mechanism and a cleaning mechanism, the clasp ring is installed on the outer side of the bronchoscope end head, the rotating rod is rotationally connected to the front end of the clasp ring, one end of the rotating rod is located on the front side of the observation lens and is provided with a scraping part, the scraping part is in close contact with the front end surface of the bronchoscope end head, and rotating the rotating rod can make the scraping part sweep the surface of the observation lens; the driving mechanism is used for driving the rotating rod to swing back and forth; and the cleaning mechanism is used for cleaning the mucus on the surface of the scraping part. By repeatedly pressing the inflation part, the rotating rod can clean the mucus on the observation lens through swinging under the synergistic action of the driving bin and the back-pushing bin, the third push rod and the second push rod are linked through the connecting rod, the cleaning mechanism can repeatedly and continuously clean the mucus on the scraping part, the operation is simple, and the field of view of the observation lens can be kept clear.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fiber bronchoscope, and particularly relates to a fiber bronchoscope lens cleaning device. BACKGROUND

[0002] Fiber bronchoscopy is an important method for diagnosing and treating respiratory diseases. When a fiber bronchoscope is used to diagnose and treat lung diseases, the lens of the fiber bronchoscope is often attached with sputum or blood at the diagnosis and treatment site, causing the lens to be blurred and affecting the smooth progress of the diagnosis and treatment operation. At present, the lens is usually cleaned by repeatedly flushing the lens with saline through the operation hole of the fiber bronchoscope, or by rubbing the lens against the wall. If the sputum in front of the lens cannot be removed, the fiber bronchoscope needs to be pulled out, the lens needs to be wiped, and then the fiber bronchoscope needs to be inserted again. However, the above-mentioned methods are easy to stimulate and damage the mucosa of the trachea of the patient, increase the pain of the patient, and also cause the diagnosis and treatment time to be prolonged. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a fiber bronchoscope lens cleaning device to quickly remove the sputum attached to the lens of the fiber bronchoscope.

[0004] The object of the present application is achieved by the following technical solutions:

[0005] The fiber bronchoscope lens cleaning device provided by the present application comprises a fiber bronchoscope end, an observation lens and an operation hole arranged at the front end of the fiber bronchoscope end, and further comprises:

[0006] A clamping ring is mounted on the outer side of the fiber bronchoscope end.

[0007] A rotating rod is rotatably connected to the front end of the clamping ring. One end of the rotating rod is located on the front side of the observation lens and is provided with a scraping part. The scraping part is in contact with the front end surface of the fiber bronchoscope end. Rotating the rotating rod can make the scraping part sweep across the surface of the observation lens.

[0008] A driving mechanism is used to drive the rotating rod to swing back and forth.

[0009] A cleaning mechanism is used to clean the sputum on the surface of the scraping part.

[0010] Further, the driving mechanism comprises a pushing part, a driving chamber, a return pushing chamber and an inflation part. The pushing part is arranged at the other end of the rotating rod and located on the outer side of the clamping ring. The inflation part is used to inflate or suck gas into the driving chamber. The driving chamber and the return pushing chamber are mounted on the outer side of the clamping ring and located on both sides of the rotating direction of the pushing part, respectively, and are used to push the pushing part to rotate, respectively.

[0011] Further, a first push rod is slidably arranged on the driving chamber. One end of the first push rod is located in the driving chamber and is provided with a first piston. The other end of the first push rod extends towards the pushing part. The driving chamber is connected with the inflation part through a first pipe.

[0012] Further, the inflation part comprises an air bag connected with the first pipe body, and the first spring is arranged in the air bag.

[0013] Further, the second push rod is arranged on the back-pushing bin and extends towards the back-pushing part, and the other end of the second push rod is arranged in the back-pushing bin and connected with the inner wall of the back-pushing bin through the second spring, so that the second push rod is pushed outwards.

[0014] Further, the back-pushing part has an inner cavity, the cleaning mechanism comprises an absorbing bin and an absorbing part, the absorbing bin is arranged on the outer side of the clasp, the third push rod is arranged on the absorbing bin, one end of the third push rod is arranged in the absorbing bin and provided with a second piston, the other end of the third push rod is connected with the second push rod through a connecting rod, a single-in valve body and a single-out valve body are arranged on the end of the absorbing bin away from the third push rod, the single-in valve body is connected with the inner cavity of the back-pushing part through the second pipe body, the second pipe body is provided with an extension, and the absorbing part is connected with the inner cavity of the back-pushing part through the third pipe body.

[0015] Further, the inner part of the single-in valve body is provided with a first blocking ring, the first blocking ring is provided with a first leaflet blocking piece on the side close to the absorbing bin, the inner part of the single-out valve body is provided with a second blocking ring, and the second blocking ring is provided with a second leaflet blocking piece on the side away from the absorbing bin.

[0016] Further, the single-out valve body is connected with a liquid storage bin through a fourth pipe body, the liquid storage bin is arranged on the outer side of the clasp and provided with a constant-pressure port on one side, and the constant-pressure port is provided with a filter screen.

[0017] Further, the absorbing port is in a long row shape parallel to the scraping part, and the absorbing port is arranged on the side of the absorbing part facing the observation lens.

[0018] Further, the outer side of the clasp is provided with a blocking cover, and the back-pushing part, the driving bin, the back-pushing bin, the absorbing bin and the liquid storage bin are arranged in the blocking cover.

[0019] According to the above technical solution, the lens cleaning device for a bronchoscope provided by the application has the following advantages:

[0020] 1. By repeatedly pressing the inflation part, the rotating rod can clean the mucus on the observation lens through swinging under the cooperation of the driving bin and the back-pushing bin, the third push rod and the second push rod are linked through the connecting rod, the cleaning mechanism can continuously clean the mucus on the scraping part, the operation is simple, and the field of view of the observation lens can be kept clear.

[0021] 2、The air bag can provide power for the movement of the first push rod in the driving bin, and then drive the rotating rod to rotate and scrape off the mucus on the surface of the observation lens, so as to obtain a clear observation field of view. The second spring in the return bin provides elastic force for the second push rod, which can push the rotating rod back to the original position when the first push rod retreats, and then the surface of the observation lens can be cleaned by repeatedly pressing the air bag, which is convenient, fast and efficient, and the cleaning process will not irritate and damage the mucosa of the patient's trachea, which is helpful to alleviate the patient's pain;

[0022] 3、When the air bag is pressed to make the first push rod push the rotating rod to scrape off the mucus on the surface of the observation lens, the second push rod will also be pushed back to the return bin by the pushing part, and the third push rod will be pulled out of the absorption bin by the connecting rod, forming a negative pressure suction force in the absorption bin. The mucus attached to the scraping part will be sucked into the absorption port, and then pass through the third pipe body, the pushing part, the second pipe body and the single inlet valve body into the absorption bin, realizing the cleaning of the scraping part, which is helpful to clean the scraping part while cleaning the mucus on the surface of the observation lens, improving the cleaning efficiency of the mucus, and preventing the scraping part from accumulating too much mucus and reducing the cleaning effect. When the second push rod is pushed out of the return bin after the air bag is pressed, the third push rod will be pushed into the absorption bin by the connecting rod, and the mucus in the absorption bin will be discharged through the single outlet valve body, balancing the internal pressure of the absorption bin and preparing for the next cleaning of the mucus on the scraping part, which is helpful to the continuous cleaning of the scraping part. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application, the following will briefly introduce the drawings needed in the specific embodiments. In all the drawings, the elements or parts are not necessarily drawn according to the actual proportion.

[0024] Figure 1 It is a sectional structure schematic diagram of the embodiment of the present application for bronchoscope lens cleaning device without the cover;

[0025] Figure 2 It is a sectional structure schematic diagram of the embodiment of the present application for bronchoscope lens cleaning device without the cover; Figure 1 It is a sectional structure schematic diagram of the embodiment of the present application for bronchoscope lens cleaning device without the cover;

[0026] Figure 3 It is a sectional structure schematic diagram of the embodiment of the present application for bronchoscope lens cleaning device without the cover;

[0027] Figure 4 It is a sectional structure schematic diagram of the embodiment of the present application for bronchoscope lens cleaning device without the cover;

[0028] Figure 5 It is a sectional structure schematic diagram of the embodiment of the present application for bronchoscope lens cleaning device without the cover;

[0029] Figure 6It is the structure schematic view of the absorption bin in one embodiment of the bronchoscope lens cleaning device of the present application;

[0030] Figure 7 It is the structure schematic view of the inflation part in one embodiment of the bronchoscope lens cleaning device of the present application;

[0031] Figure 8 It is the structure schematic view of one embodiment of the bronchoscope lens cleaning device of the present application;

[0032] Reference signs:

[0033] Bronchoscope tip 1, observation lens 11, operation hole 12;

[0034] Snap ring 2, shield 21;

[0035] Rotating rod 3, scraping part 31;

[0036] Driving mechanism 4, pushing part 41, driving bin 42, first push rod 421, first piston 422, first tube 423, back pushing bin 43, second push rod 431, second spring 432, inflation part 44, air bag 441, first spring 442;

[0037] Cleaning structure 5, absorption bin 51, third push rod 511, second piston 512, connecting rod 513, single inlet valve 514, first blocking ring 5141, first leaf blocking piece 5142, single outlet valve 515, second blocking ring 5151, second leaf blocking piece 5152, second tube 516, extension 5161, fourth tube 517, absorption part 52, absorption port 521, third tube 522, liquid storage bin 53, constant pressure port 531, filter screen 532. DETAILED DESCRIPTION

[0038] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a lot of other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0039] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0041] As shown in Figures 1-8 The fibrobronchoscope lens cleaning device provided by the embodiment comprises a fibrobronchoscope end head 1, an observation lens 11 and an operation hole 12 arranged at the front end of the fibrobronchoscope end head 1, a clasp 2, a rotating rod 3, a driving mechanism 4 and a cleaning mechanism 5.

[0042] As shown in Figure 1 and Figure 8 The clasp 2 is arranged outside the fibrobronchoscope end head 1 and wraps around the outside of the fibrobronchoscope end head 1. Specifically, the clasp 2 can be fixedly connected with the fibrobronchoscope end head 1 or detachably connected with the fibrobronchoscope end head 1 through screwing or clamping.

[0043] As shown in Figures 1-3 The rotating rod 3 is rotatably connected to the front end of the clasp 2. One end of the rotating rod 3 is located at the front side of the observation lens 11 and is provided with a scraping part 31. The scraping part 31 abuts against the front end surface of the fibrobronchoscope end head 1, and rotating the rotating rod 3 can make the scraping part 31 sweep across the surface of the observation lens 11. Specifically, the scraping part 31 can be a brush, a silica gel strip or a rubber strip, which can sweep away the mucus on the surface of the observation lens 11.

[0044] The driving mechanism 4 is used to drive the rotating rod 3 to swing back and forth.

[0045] As shown in Figure 1 and Figure 2 In an embodiment, the driving mechanism 4 comprises a pushing part 41, a driving chamber 42, a return pushing chamber 43 and an inflation part 44. The pushing part 41 is arranged at the other end of the rotating rod 3 and located outside the clasp 2. The inflation part 44 is used to inflate or suck gas into the driving chamber 42. The driving chamber 42 and the return pushing chamber 43 are arranged outside the clasp 2 and located at both sides of the pushing part 41 in the rotating direction, respectively, and are used to push the pushing part 41 to rotate, respectively.

[0046] As shown in Figure 4As shown, in particular, the driving bin 42 is slidably provided with a first push rod 421, one end of the first push rod 421 is located in the driving bin 42 and is provided with a first piston 422, the first piston 422 is tightly attached to the inner wall of the driving bin 42, the other end of the first push rod 421 extends towards the pushing part 41, and the driving bin 42 is connected with the inflation part 44 through a first pipe body 423. By inflating or sucking gas into the driving bin 42 through the inflation part 44, the sliding of the first piston 422 in the driving bin 42 can be controlled, so that the first push rod 421 can push the pushing part 41 to move towards the return bin 43 or make the first push rod 421 retreat to the driving bin 42, so that the rotating rod 3 can scan the surface of the observation lens 11 in one way.

[0047] As shown, Figure 7 Further, the inflation part 44 includes an air bag 441 connected with the first pipe body 423, by pressing the air bag 441, gas can be filled into the driving bin 42 through the first pipe body 423 to drive the first push rod 421 to rotate the rotating rod 3 once in one way, so that the scraping part 31 sweeps away the mucus on the surface of the observation lens 11, and the first spring 442 is installed in the air bag 441, which can provide elastic force to lift the air bag 441 to expand, so that the air bag 441 can suck out the gas in the inflation part 44 after each time the air bag 441 is pressed, and then the first push rod 421 retreats to the driving bin 42.

[0048] It should be noted that the first pipe body 423 extends along the length direction of the bronchoscope to the external operation end and is connected with the inflation part 44, and the inflation part 44 is a manual pinch control.

[0049] As shown, Figure 5 Further, the return bin 43 is slidably provided with a second push rod 431, one end of the second push rod 431 extends towards the pushing part 41, and the other end is located in the return bin 43 and is connected with the inner wall of the return bin 43 through a second spring 432, which provides elastic force to make the second push rod 431 be pushed out, so that the second push rod 431 can always abut against the pushing part 41 and provide driving force for the pushing part 41 to move towards the driving bin 42, and at each time when the air bag 441 is pressed, the second push rod 431 can timely push the pushing part 41 close to the driving bin 42, so that the rotating rod 3 can rotate in reverse once in one way, to complete a swing period of the rotating rod 3, and facilitate the next driving of the rotating rod 3 to swing.

[0050] In specific use, the air bag 441 can provide power for the movement of the first push rod 421 in the driving bin 42, and in turn drive the rotation of the rotating rod 3 to scrape the mucus on the surface of the observation lens 11, so as to obtain a clear observation field of view. The second push rod 431 in the return bin 43 is provided with elastic force by the second spring 432, which can push the rotating rod 3 back to the original position when the first push rod 421 retreats, and in turn can clean the surface of the observation lens 11 by repeatedly pressing the air bag 441, which is convenient, fast and efficient, and the cleaning process will not irritate and damage the mucosa of the trachea of the patient, which is beneficial to alleviate the pain of the patient.

[0051] The cleaning mechanism 5 is used for cleaning the mucus on the surface of the scraping part 31, so as to keep the cleaning effect of the scraping part 31 at all times.

[0052] As shown in Figure 1 , Figure 2 and Figure 6 , in an embodiment, the pushing part 41 has an inner cavity, and the cleaning mechanism 5 includes an absorption bin 51 and an absorption part 52. The absorption bin 51 is installed on the outside of the buckle 2, and a third push rod 511 is slidably arranged on the absorption bin 51. One end of the third push rod 511 is located in the absorption bin 51 and is provided with a second piston 512, and the second piston 512 is tightly fitted with the inner wall of the absorption bin 51. The other end of the third push rod 511 is connected with the second push rod 431 through a connecting rod 513. The end of the absorption bin 51 away from the third push rod 511 is respectively provided with a single inlet valve body 514 and a single outlet valve body 515. The single inlet valve body 514 only allows substances to enter the absorption bin 51, and the single outlet valve body 515 only allows substances to exit the absorption bin 51. The single inlet valve body 514 is in communication with the inner cavity of the pushing part 41 through a second pipe body 516, and the second pipe body 516 is provided with an extension part 5161. The extension part 5161 is a bellows, which can stretch and contract with the movement of the pushing part 41. One side of the absorption part 52 is provided with an absorption port 521, and the absorption part 52 is in communication with the inner cavity of the pushing part 41 through a third pipe body 522.

[0053] In practical use, when the airbag 441 is pressed, causing the first push rod 421 to push the rotating rod 3 to scrape off the mucus on the surface of the observation lens 11, the second push rod 431 will also be pushed back to the return chamber 43 via the push part 41. This, in turn, will cause the third push rod 511 to pull out the absorption chamber 51 via the connecting rod 513. A negative pressure suction is then created within the absorption chamber 51, drawing the mucus adhering to the scraping part 31 into the absorption port 521. The mucus then passes sequentially through the third tube 522, the push part 41, the second tube 516, and the single-inlet valve body 514 into the absorption chamber 51, thus cleaning the scraping part 31 and providing a beneficial effect. While cleaning the surface of the observation lens 11 with mucus in the scraping part 31, the scraping part 31 is also cleaned, which improves the cleaning efficiency of the mucus and prevents excessive accumulation of mucus in the scraping part 31, which would reduce the cleaning effect. When the second push rod 431 is pushed back into the push chamber 43 after the airbag 441 is pressed, the third push rod 511 is driven by the connecting rod 513 to push into the absorption chamber 51, and the mucus in the absorption chamber 51 is discharged through the single outlet valve body 515. This balances the internal pressure of the absorption chamber 51 and prepares for the next cleaning of the mucus in the scraping part 31, which is beneficial for the continuous cleaning of the scraping part 31.

[0054] This invention only requires repeated pressing of the inflation part 44, which, under the coordinated action of the drive chamber 42 and the push chamber 43, causes the rotating rod 3 to swing and clean the mucus on the observation lens 11. At the same time, the connecting rod 513 links the third push rod 511 and the second push rod 431, so that the cleaning mechanism 5 can repeatedly and continuously clean the mucus on the scraping part 31. The operation is simple and helps to maintain a clear field of view of the observation lens 11.

[0055] like Figure 6 As shown, specifically, the single-inlet valve body 514 is provided with a first retaining ring 5141 inside, and a first hinged baffle 5142 is provided on the side of the first retaining ring 5141 near the absorption chamber 51. The single-outlet valve body 515 is provided with a second retaining ring 5151 inside, and a second hinged baffle 5152 is provided on the side of the second retaining ring 5151 away from the absorption chamber 51. The first hinged baffle 5142 and the second hinged baffle 5152 are respectively connected to the edges of the first retaining ring 5141 and the second retaining ring 5151 with one side edge. In the initial state, the first hinged baffle 5142 and the second hinged baffle 5152 can adhere to and block the openings of the first retaining ring 5141 and the second retaining ring 5151. The first hinged baffle 5142 and the second hinged baffle 5152 can be lifted by force. When the absorption chamber 51 is under negative pressure, the first hinged baffle 5142 will be lifted by force and the second hinged baffle 5152 will be pressed tightly against the second retaining ring 5151. Conversely, when the pressure in the absorption chamber 51 increases, the first hinged baffle 5142 will be pressed tightly against the first retaining ring 5141 and the second hinged baffle 5152 will be lifted by force. Of course, the single-inlet valve body 514 and the single-outlet valve body 515 can also be existing one-way valves sold on the market.

[0056] likeFigure 1 As shown in the drawings, in an embodiment, the single-out valve body 515 is connected with a liquid storage bin 53 through a fourth tube body 517, the liquid storage bin 53 is used to store the mucus discharged from the absorption bin 51, prevent the mucus from being reattached to the observation lens 11, the liquid storage bin 53 is installed on the outside of the buckle 2 and one side of the liquid storage bin 53 is provided with a constant pressure port 531, the constant pressure port 531 is used to balance the internal pressure of the liquid storage bin 53, and a filter screen 532 is arranged in the constant pressure port 531 to prevent the mucus from overflowing.

[0057] As shown in the drawings, preferably, the absorption port 521 is in a long row shape parallel to the scraping part 31, which is conducive to fully absorbing the mucus on the scraping part 31, and the absorption port 521 is located on the side of the absorption part 52 facing the observation lens 11, so as to prevent the suction force generated by the absorption port 521 from causing discomfort to the tracheal mucosa of the patient. Figure 3 As shown in the drawings, preferably, the outside of the buckle 2 is provided with a cover 21, and the pushing part 41, the driving bin 42, the back-pushing bin 43, the absorption bin 51 and the liquid storage bin 53 are all located in the cover 21, which is conducive to preventing the structures from scratching the airway mucosa of the patient and causing damage.

[0058] Figure 8 As shown in the drawings, preferably, the outside of the buckle 2 is provided with a cover 21, and the pushing part 41, the driving bin 42, the back-pushing bin 43, the absorption bin 51 and the liquid storage bin 53 are all located in the cover 21, which is conducive to preventing the structures from scratching the airway mucosa of the patient and causing damage.

[0059] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.​

Claims

1. A bronchoscope lens cleaning device, comprising a bronchoscope tip and an observation lens and an operation port disposed at the front end of the bronchoscope tip, characterized in that, Also includes: A buckle, which is installed on the outside of the end of the bronchoscope; A rotating rod is rotatably connected to the front end of the buckle. One end of the rotating rod is located in front of the observation lens and is provided with a scraping part. The scraping part abuts against the front end surface of the bronchoscope tip, and rotating the rotating rod can cause the scraping part to sweep across the surface of the observation lens. A drive mechanism for driving the rotating rod to swing back and forth; and A cleaning mechanism for cleaning the mucus from the surface of the scraping part; The driving mechanism includes a pushing part, a driving chamber, a return chamber, and an inflation part. The pushing part is located at the other end of the rotating rod and outside the buckle. The inflation part is used to fill or draw gas into the driving chamber. The driving chamber and the return chamber are installed outside the buckle and are located on both sides of the rotation direction of the pushing part, and are used to push the pushing part to rotate. A first push rod is slidably passed through the drive chamber. One end of the first push rod is located inside the drive chamber and is provided with a first piston. The other end extends toward the pushing part. The drive chamber is connected to the inflation part through a first tube. The inflation part includes an air bladder connected to the first tube, and a first spring is installed inside the air bladder; A second push rod is slidably mounted on the push chamber. One end of the second push rod extends toward the push part, and the other end is located inside the push chamber and connected to the inner wall of the push chamber via a second spring, so that the second push rod is pushed outward. The pushing part has an inner cavity. The cleaning mechanism includes an absorption chamber and an absorption part. The absorption chamber is installed on the outside of the buckle. A third push rod is slidably passed through the absorption chamber. One end of the third push rod is located inside the absorption chamber and is provided with a second piston. The other end is connected to the second push rod through a connecting rod. A single-inlet valve body and a single-outlet valve body are respectively provided at the end of the absorption chamber away from the third push rod. The single-inlet valve body is connected to the inner cavity of the pushing part through a second tube body. An extension part is provided on the second tube body. An absorption port is opened on one side of the absorption part, and the absorption part is connected to the inner cavity of the pushing part through the third tube body. The absorption port is arranged in a long row parallel to the scraping part, and the absorption port is located on the side of the absorption part facing the observation lens.

2. The bronchoscope lens cleaning device according to claim 1, characterized in that, The single-inlet valve body is provided with a first retaining ring inside, and a first hinged baffle is provided on the side of the first retaining ring near the absorption chamber. The single-outlet valve body is provided with a second retaining ring inside, and a second hinged baffle is provided on the side of the second retaining ring away from the absorption chamber.

3. The bronchoscope lens cleaning device according to claim 2, characterized in that, The single-outlet valve body is connected to a liquid storage tank through a fourth pipe. The liquid storage tank is installed on the outside of the buckle and a constant pressure port is provided on one side of it. A filter screen is provided inside the constant pressure port.

4. The bronchoscope lens cleaning device according to claim 3, characterized in that, A baffle is provided on the outside of the buckle, and the pushing part, driving chamber, pushing chamber, absorption chamber and liquid storage chamber are all located inside the baffle.

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