A snare for gastroenteroscopy which facilitates accurate control of the degree of tightening

Abstract

The application discloses a snare device for gastroenterological examination, which is convenient for accurately controlling the tightening degree and relates to the related field of medical devices, and comprises an outer pipe, a rotating pipe is rotatably installed on the left side of the outer pipe, an insertion pipe is installed on the left side port pipeline of the rotating pipe, an adjusting device is arranged on the top end of the outer pipe, which is favorable for controlling the tightening of the snare through rack transmission, and is helpful for accurately controlling the tightening degree of the snare; an auxiliary device is arranged on the left end of the adjusting device, which is favorable for improving the installation and dismounting speed of the snare, and is helpful for reducing the maintenance time and cost; a wire fixing device is arranged on the left side of the walking rack, which is favorable for temporarily fixing the snare; a guide device is arranged on the left side of the bottom plate, which is favorable for limiting and guiding the moving snare, and effectively improves the stability and smoothness of movement.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically a glove device for gastrointestinal endoscopy that allows for precise control of the tightening degree. Background Technology

[0002] A snare is a medical device primarily used for the endoscopic removal of various polyps and excess lesions in conjunction with high-frequency electrical stimulation. For example, during a colonoscopy, a medical snare can be used to remove polyps in the GI tract. In the case of pedunculated polyps, the snare passes through the polyp and is pulled taut around the neck of the polyp, which is then cut and removed. The cutting process can be performed or enhanced by passing radiofrequency (RF) current through the biological tissue. The current can also aid in ablation. Pedicled polyps can be removed in a similar manner.

[0003] Prior art application number CN201922364983.8 discloses a snare device for gastrointestinal endoscopy, including a core rod, a slip ring, a snare insertion rod, a snare rope, and a rotating rod, and also includes a protective mechanism. The protective mechanism includes a sealing cover, a snare rope inlet, a rotating rod outlet, a protruding rod, a rotating shaft, and a rotating cylinder. The protective mechanism is fixedly connected to the top of the snare insertion rod, and the protective mechanism includes a sealing cover disposed on the top of the snare insertion rod.

[0004] The existing gastrointestinal endoscopy ring tightening device tightens the ring by pulling a slip ring. This control method is not precise enough and it is difficult to accurately control the tightening state.

[0005] Replacing or repairing the loops of the gastrointestinal endoscope requires disassembling the equipment, which greatly increases the time and cost of the maintenance work.

[0006] When replacing or repairing the bearings, it is necessary to install and adjust them. However, the equipment lacks a device to temporarily fix the bearings, which can easily cause them to slip off.

[0007] In existing technologies, the rings are moved by direct displacement, which easily leads to increased wear and wrinkles on the rings. Summary of the Invention

[0008] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a glove device for gastrointestinal endoscopy that facilitates precise control of the tightening degree.

[0009] This invention is implemented as follows: A glove device for gastrointestinal endoscopy, facilitating precise control of tightening, is constructed. The device includes an outer tube, a rotating tube rotatably mounted with an opening on the left side of the outer tube, an insertion tube installed at the left end of the rotating tube, and a glove slidably mounted on the inner side of the insertion tube; an adjustment device located at the top of the outer side of the outer tube; and an auxiliary device located at the left end of the adjustment device. The adjustment device includes: a knob rotatably mounted with an opening at the top of the outer side of the outer tube; a slide platform fixedly connected to the bottom of the inner side of the outer tube; and a traveling rack. The slide table has a sliding rack slidably mounted on its top inner groove; a first bevel gear, which is welded to the bottom of the knob via a crossbar; a second bevel gear, whose outer left end tooth groove meshes with the first bevel gear; a worm, which is welded and fixed to the center of the left end of the second bevel gear; a worm wheel, whose outer side meshes with the top tooth groove of the outer side of the worm wheel, and the worm wheel is rotatably mounted on the rear end of the inner side of the outer tube via a connecting rod; and a wire-fixing device, which is provided on the left side of the sliding rack; wherein the worm is rotatably mounted on the top end of the inner side of the outer tube via a connecting plate.

[0010] Preferably, the cable fixing device includes: a cable fixing box, which is welded and fixed to the left side of the traveling rack; a pressure plate, which is slidably disposed on the inner side of the cable fixing box; a pad, which is glued to the bottom of the cable fixing box; a semi-cylinder, which is disposed at the bottom of the pressure plate; a friction-increasing sleeve, which is glued to the outer side of the semi-cylinder; a pad block, which is grooved and glued to the left end of the bottom of the pressure plate; and a partition, which is glued to the bottom of the pad block and the bottom of the partition, and a semi-cylinder is welded to the bottom of the partition; wherein, the pad is made of rubber.

[0011] Preferably, the auxiliary device includes: a base plate, which is bolted to the top of the pressure plate; support rods, which are welded to the left and right ends of the top of the base plate; a connecting plate, which is welded to the top of the support rods; a damping spring, which is elastically installed on the top of the base plate; a top plate, which is fixedly installed on the top of the damping spring; a lifting rod, which is welded to the right end of the top of the connecting plate; and a guiding device, which is provided on the left side of the base plate; wherein the top of the top plate is slidably connected to the inner side of the outer tube.

[0012] Preferably, the guiding device includes: a rotating ring, which is rotatably mounted with an opening at the left end of the inner side of the outer tube; a smoothing rod, which is welded to the right side of the rotating ring; and a smoothing block, wherein the smoothing rod is fixedly connected to the top of the smoothing block; wherein the bottom of the smoothing block is in contact with the collar.

[0013] Preferably, the guiding device further includes: a base, the inner side of the rotating ring being welded to the top of the base; a guide wheel, the guide wheel being rotatably mounted in the inner groove of the base; wherein, the outer side of the guide wheel has a groove at its middle end that contacts the collar.

[0014] Preferably, the guiding device further includes: a buffer ring, wherein the buffer ring is grooved and glued to the middle of the outer side of the guide wheel; and an OPP film, wherein an OPP film is glued and fixed to the outer side of the buffer ring.

[0015] Preferably, the opposing surfaces of the pad and the friction-enhancing sleeve are provided with 0.8 mm corrugations.

[0016] Preferably, a limiting block is welded to the left end of the rotating ring, and the limiting block is slidably connected to the grooved left end of the inner side of the outer tube.

[0017] Preferably, the outer surface of the traveling rack is provided with a wear-resistant layer, and the wear-resistant layer is made of silicon carbide ceramic.

[0018] Preferably, the thicknesses of the friction-enhancing sleeve and the pad are two millimeters and three millimeters, respectively.

[0019] The present invention has the following advantages: The present invention provides an improved gastrointestinal endoscopy ring device that facilitates precise control of tightening, and compared with similar devices, it has the following improvements:

[0020] The present invention provides a gastrointestinal endoscopy ring device that facilitates precise control of tightness. An adjustment device is located at the top of the outer side of the outer tube. A knob drives a traveling rack to extend or tighten the ring for cutting operations. This rack-and-pinion transmission allows for precise control of the ring's tightness, effectively improving work accuracy and ensuring the smooth progress of both the examination and cutting procedures.

[0021] The present invention provides a gastrointestinal endoscopy ring device that facilitates precise control of tightening. By incorporating an auxiliary device at the left end of the adjustment device, and by using a lifting rod to compress the damping spring via the base plate, the ring can be quickly disassembled and installed. This improves the speed of ring installation and disassembly, effectively reduces the hassle of maintenance work, and helps to reduce maintenance time and costs.

[0022] The present invention provides a gastrointestinal endoscopy ring device that facilitates precise control of tightening. By setting a fixing device on the left side of the traveling rack, the ring can be temporarily fixed by the fixing box and the semi-cylinder. This facilitates temporary fixation of the ring and, with the addition of increased friction, effectively reduces the possibility of the ring slipping off, greatly increasing the efficiency of maintenance work.

[0023] The present invention provides a gastrointestinal endoscopy ring device that facilitates precise control of tightening. By setting a guide device on the left side of the base plate, the ring can be guided and wrinkles smoothed by guide wheels and smoothing blocks. This facilitates the limiting and guidance of the moving ring, effectively improving the stability and smoothness of movement, and can greatly avoid the generation of static electricity, thus helping to reduce the wear and wrinkles of the ring. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the adjusting device and the fixing device of the present invention;

[0026] Figure 3 This is a partially exploded structural diagram of the adjusting device of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the wire fixing device of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the outer tube of the present invention;

[0029] Figure 6 This is the invention Figure 1 Enlarged structural diagram at point A in the diagram;

[0030] Figure 7 This is a schematic diagram of the internal structure of the junction box of the present invention;

[0031] Figure 8 This is the invention Figure 5 Enlarged structural diagram at point B in the diagram;

[0032] Figure 9 This is a partial exploded structural diagram of the guiding device of the present invention.

[0033] The components include: outer tube-1, rotating tube-2, insertion tube-3, collar-4, adjusting device-5, auxiliary device-6, knob-51, slide table-52, traveling rack-53, first bevel gear-54, second bevel gear-55, worm gear-56, worm wheel-57, wire fixing device-58, wire fixing box-581, pressure plate-582, pad plate-583, semi-cylinder-584, friction-enhancing sleeve-585, pad block-586, partition plate-587, base plate-61, support rod-62, connecting plate-63, damping spring-64, top plate-65, lifting rod-66, guiding device-67, rotating ring-671, smoothing rod-672, smoothing block-673, base-674, guide wheel-675, buffer ring-676, and OPP film-677. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-9 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0035] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0036] 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 invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Please see Figures 1-9 The present invention provides a gastrointestinal endoscopy ring device for easy and precise control of tightening, comprising an outer tube 1, a rotating tube 2 rotatably mounted on the left side of the outer tube 1 with an opening, an insertion tube 3 installed on the left end of the rotating tube 2, and a ring 4 slidably disposed on the inner side of the insertion tube 3.

[0038] The adjusting device 5 is located at the top of the outer side of the outer tube 1, and the auxiliary device 6 is located at the left end of the adjusting device 5. The adjusting device 5 includes a knob 51 rotatably installed at the top of the outer side of the outer tube 1 through an opening. The bottom of the inner side of the outer tube 1 is fixedly connected to the slide table 52. The inner groove at the top of the slide table 52 is slidably provided with a traveling rack 53, which is beneficial for the traveling rack 53 to move in the inner groove at the top of the slide table 52.

[0039] A first bevel gear 54 is welded to the bottom of the knob 51 via a crossbar. The tooth groove on the left end of the outer side of the first bevel gear 54 meshes with the second bevel gear 55. The first bevel gear 54, which helps to rotate, drives the second bevel gear 55 to rotate. A worm 56 is welded and fixed to the center hole on the left end of the second bevel gear 55. The outer side of the worm 56 meshes with the tooth groove at the top of the outer side of the worm wheel 57. The worm 56, which helps to rotate, drives the worm wheel 57 to rotate.

[0040] The worm gear 57 is rotatably mounted on the rear end of the inner side of the outer tube 1 via a connecting rod. A wire fixing device 58 is provided on the left side of the traveling rack 53, which facilitates the movement of the traveling rack 53 and drives the collar 4 to move. The worm 56 is rotatably mounted on the top end of the inner side of the outer tube 1 via a connecting plate. A wear-resistant layer is provided on the outer side of the traveling rack 53, and the material of the wear-resistant layer is silicon carbide ceramic, which reduces the wear of the traveling rack 53 and helps to extend the service life of the traveling rack 53.

[0041] The working principle of a gastrointestinal endoscopy snare based on Embodiment 1, which facilitates precise control of tightness, is as follows:

[0042] First, when using this device, place it in the work area, and then connect it to an external power source to provide the power required for its operation.

[0043] Second, during the resection, the user observes the device to see if the collar 4 is fully extended or retracted. Then, the user inserts the insertion tube 3 into the stomach and works with the help of a gastroscopy. When the growth is within the range of the collar 4 of the device, the user turns the knob 51 by hand. The knob 51 drives the first bevel gear 54 and the second bevel gear 55 to rotate. Then, the rotating second bevel gear 55 drives the worm 56 and the worm wheel 57 to rotate. Then, the rotating worm wheel 57 drives the traveling rack 53 to move.

[0044] Third, the moving walking rack 53 will gradually retract the collar 4 into the interior. At this time, the collar 4, which gradually shrinks in size, will tighten the growth. During this process, the user can stop the operation and make appropriate adjustments. Then, the collar 4, which continues to shrink, will cut off the growth.

[0045] Fourth, after the travel rack 53 reaches its travel length, the travel rack 53 stops moving. After the growth is removed, the insertion tube 3 is taken out and the growth is recycled. This is beneficial for controlling the tightening of the collar 4 through the rack transmission, which helps to accurately control the tightness of the collar 4, effectively improves the accuracy of the work, and helps to ensure the smooth progress of inspection and cutting work.

[0046] Example 2:

[0047] Please see Figures 1-9 The present invention provides a gastrointestinal endoscopy ring device for precise control of tightening. Compared with Embodiment 1, this embodiment further includes: a wire fixing device 58 including a wire fixing box 581 welded and fixed on the left side of a traveling rack 53, a pressure plate 582 slidably disposed on the inner side of the wire fixing box 581, the pressure plate 582 contacting the ring 4, a pad 583 adhesively installed at the bottom of the wire fixing box 581, a semi-cylinder 584 disposed at the bottom of the pressure plate 582, and the outer side of the semi-cylinder 584 adhesively connected to the friction-enhancing sleeve 585;

[0048] A pad 586 is glued and fixed to the bottom left end of the pressure plate 582. The pad 586 facilitates the temporary fixation of the collar 4. The bottom of the pad 586 is glued to the bottom of the partition plate 587. A semi-cylinder 584 is welded to the bottom of the partition plate 587. The pad 583 is made of rubber. The opposing surfaces of the pad 583 and the friction-enhancing sleeve 585 are provided with 0.8 mm corrugations. The friction-enhancing sleeve 585 and the pad 583 can increase the friction between the wire box 581 and the semi-cylinder 584 and the collar 4. The thickness of the friction-enhancing sleeve 585 and the pad 583 is two mm and three mm respectively, which is helpful to express the limiting value of the friction-enhancing sleeve 585 and the pad 583.

[0049] In this embodiment:

[0050] When it is necessary to temporarily fix the collar 4, the user lifts the pressure plate 582 and inserts the collar 4 into the cable box 581. Then, the pressure plate 582 is lowered. With the help of the pad 586, the semi-cylinder 584 and the partition 587 will temporarily fix the collar 4. Moreover, the friction-increasing sleeve 585 and the pad 583 can increase the friction between the cable box 581, the semi-cylinder 584 and the collar 4. Then, the next step of the work on the collar 4 can begin. This is conducive to the temporary fixation of the collar 4 and, with the increase of friction, effectively reduces the possibility of the collar 4 slipping off, greatly increasing the efficiency of the maintenance work.

[0051] Example 3:

[0052] Please see Figures 1-9 This invention provides a gastrointestinal endoscopy ring device for precise control of tightening. Compared to Embodiment 1, this embodiment further includes: an auxiliary device 6 comprising a pressure plate 582 with a base plate 61 bolted to its top. The base plate 61 provides a platform for installing other components. Support rods 62 are welded to the left and right ends of the top of the base plate 61, and a connecting plate 63 is welded to the top of the support rods 62. A damping spring 64 is elastically installed on the top of the base plate 61, serving as a power source for compression and fixation. A top plate 65 is fixedly installed on the top of the damping spring 64. A lifting rod 66 is welded to the right end of the top of the connecting plate 63, which facilitates quick disassembly and installation of the ring 4 via the lifting rod 66. A guide device 67 is provided on the left side of the base plate 61, and the top of the top plate 65 is slidably connected to the inner side of the outer tube 1.

[0053] In this embodiment:

[0054] First, when preparing to replace the collar 4, the moving walking rack 53 will drive the auxiliary device 6 to move. Then, the user will lift the lifting rod 66 by hand. The rising lifting rod 66 will drive the base plate 61 and the connecting plate 63 to move and compress the damping spring 64. At this time, the pressure applied to the pressure plate 582 will disappear, and then the user will pull out the collar 4.

[0055] Secondly, the user inserts the new collar 4 into the cable box 581 and adjusts it. Then the user releases the lifting rod 66, and the elastic potential energy of the damping spring 64 will press and fix the collar 4. This helps to improve the speed of installing and removing the collar 4, effectively reduce the trouble of maintenance work, and help reduce the time and cost of maintenance work.

[0056] Example 4:

[0057] Please see Figures 1-9 The present invention provides a gastrointestinal endoscopy ring device for precise control of tightening. Compared with Embodiment 1, this embodiment further includes: a guiding device 67 including a rotating ring 671 rotatably mounted with an opening at the left end of the inner side of the outer tube 1, a smoothing rod 672 welded to the right side of the rotating ring 671, the smoothing rod 672 being fixedly connected to the top of the smoothing block 673, which helps the smoothing rod 672 to support the smoothing block 673, and the bottom of the smoothing block 673 is in contact with the ring 4;

[0058] The inner side of the swivel ring 671 is welded to the top of the base 674. A guide wheel 675 is rotatably installed in the inner groove of the base 674. The outer side of the guide wheel 675 has a groove at the middle end that contacts the collar 4. The guide wheel 675 facilitates the guidance of the moving collar 4. A buffer ring 676 is glued to the groove at the middle end of the outer side of the guide wheel 675.

[0059] An OPP film 677 is glued to the outer side of the buffer ring 676, which helps to reduce the generation of static electricity. A limiting block is welded to the left end of the rotating ring 671, and the limiting block is slidably connected to the grooved left end of the inner side of the outer tube 1, which helps to limit the rotation of the rotating ring 671 and improve the stability of the rotation of the ring 671.

[0060] In this embodiment:

[0061] First, when the user tightens or extends the collar 4, the collar 4 will come into contact with the guide wheel 675. The smoothing block 673 can smooth the collar 4 and reduce the formation of wrinkles, which helps to reduce the collar 4 from folding due to wrinkles. The guide wheel 675 can also increase the stability and smoothness of the collar 4 when it moves.

[0062] Secondly, the OPP film 677 can reduce the occurrence of static electricity, and then the tightening or extension of the collar 4 is completed. This is beneficial for limiting and guiding the moving collar 4, effectively improving the stability and smoothness of movement, and can greatly avoid the generation of static electricity, which helps to reduce the wear and wrinkles of the collar 4.

[0063] This invention provides an improved gastrointestinal endoscope ring device that facilitates precise control of tightening. An adjustment device 5 is located at the top of the outer side of the outer tube 1. A knob 51 drives a traveling rack 53 to move, causing the ring 4 to extend or tighten for cutting. This rack-and-pinion transmission allows for precise control of the ring 4's tightening, improving accuracy and ensuring smooth inspection and cutting operations. An auxiliary device 6 is located at the left end of the adjustment device 5. A lifting rod 66 drives a base plate 61 to compress a damping spring 64, enabling quick installation and removal of the ring 4. This increases the speed of installation and removal, reducing maintenance work. The ease of maintenance reduces the time and cost of repair work. A wire fixing device 58 is installed on the left side of the traveling rack 53. The ferrule 4 can be temporarily fixed by the wire fixing box 581 and the semi-cylinder 584. This facilitates the temporary fixation of the ferrule 4 and, with the addition of increased friction, effectively reduces the chance of the ferrule 4 slipping off, greatly increasing the efficiency of maintenance work. A guide device 67 is installed on the left side of the base plate 61. The ferrule 4 can be guided and the wrinkles smoothed by the guide wheel 675 and the smoothing block 673. This facilitates the limiting and guiding of the moving ferrule 4, effectively improving the stability and smoothness of movement, and greatly avoiding the generation of static electricity, which helps to reduce the wear and wrinkles of the ferrule 4.

[0064] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0065] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A snare for gastrointestinal endoscopy that facilitates precise control of tightness, comprising an outer tube (1), a rotating tube (2) rotatably installed on the left side of the outer tube (1), an insertion tube (3) installed on the left end of the rotating tube (2), and a snare (4) slidably disposed on the inner side of the insertion tube (3). Its features are: It also includes an adjustment device (5), which is located at the top of the outer side of the outer tube (1); and an auxiliary device (6), which is located at the left end of the adjustment device (5). The regulating device (5) includes: A knob (51) is rotatably mounted on the top of the outer side of the outer tube (1). The slide (52) is fixedly connected to the bottom end of the inner side of the outer tube (1); The traveling rack (53) is slidably provided in the inner groove at the top of the slide table (52); The first bevel gear (54) is welded to the bottom of the knob (51) via a crossbar; The second bevel gear (55) is meshed with the tooth groove at the left end of the outer side of the first bevel gear (54); the worm (56) is welded and fixed to the center hole at the left end of the second bevel gear (55); the worm wheel (57) is meshed with the tooth groove at the top end of the outer side of the worm (56) and the worm wheel (57) is rotatably mounted on the rear end of the inner side of the outer tube (1) through a connecting rod; the wire fixing device (58) is provided on the left side of the traveling rack (53). The worm (56) is rotatably mounted on the top of the inner side of the outer tube (1) via a connecting plate; The wire fixing device (58) includes: The cable box (581) is welded and fixed to the left side of the traveling rack (53). Pressure plate (582), the inner side of the wire box (581) is slidably provided with pressure plate (582); Pad (583), a pad (583) is glued to the bottom of the wire box (581); A semi-cylinder (584) is provided at the bottom of the pressure plate (582); Friction-enhancing sleeve (585), the outer side of the semi-cylinder (584) is bonded to the friction-enhancing sleeve (585); pad (586), the pad (586) is fixedly bonded to the bottom left end of the pressure plate (582); partition (587), the bottom of the pad (586) is bonded to the bottom of the partition (587), and the semi-cylinder (584) is welded to the bottom of the partition (587); The pad (583) is made of rubber; The auxiliary device (6) includes: The base plate (61) is bolted to the top of the pressure plate (582); Support rod (62), the left and right ends of the top of the base plate (61) are respectively welded with support rod (62); A connecting plate (63) is welded to the top of the support rod (62); Damping spring (64), the bottom plate (61) is elastically mounted on the top of the damping spring (64); Top plate (65), the top of the damping spring (64) is fixedly installed on the top of the top plate (65); lifting rod (66), the top right end of the connecting plate (63) is welded with the lifting rod (66); guiding device (67), the bottom plate (61) is provided with the guiding device (67) on the left side. The top of the top plate (65) is slidably connected to the inner side of the outer tube (1).

2. The gastrointestinal endoscopy ring device according to claim 1, which facilitates precise control of tightening, is characterized in that: The guiding device (67) includes: Rotary ring (671), a rotating ring (671) is rotatably installed on the left end of the inner side of the outer tube (1). Smoothing bar (672), the smoothing bar (672) is welded and installed on the right side of the swivel (671); Smoothing block (673), wherein the smoothing rod (672) is fixedly connected to the top of the smoothing block (673); The bottom of the smoothing block (673) is in contact with the collar (4).

3. The gastrointestinal endoscopy ring device according to claim 2, which facilitates precise control of tightening, is characterized in that: The guiding device (67) further includes: The base (674) has its inner side of the rotating ring (671) welded to the top of the base (674); The guide wheel (675) is rotatably mounted in the inner groove of the base (674); The guide wheel (675) has a groove at the middle of its outer side that contacts the collar (4).

4. The gastrointestinal endoscopy ring device according to claim 3, which facilitates precise control of tightening, is characterized in that: The guiding device (67) further includes: A buffer ring (676) is attached to the outer side of the guide wheel (675) by a groove at the middle. OPP film (677), the outer side of the buffer ring (676) is adhered and fixed with OPP film (677).

5. The gastrointestinal endoscopy ring device according to claim 1, which facilitates precise control of tightening, is characterized in that: The opposing surfaces of the pad (583) and the friction-enhancing sleeve (585) are both provided with 0.8 mm corrugations.

6. The gastrointestinal endoscopy ring device according to claim 2, which facilitates precise control of tightening, is characterized in that: The left end of the rotating ring (671) is welded with a limiting block, and the limiting block is slidably connected to the left end of the inner side of the outer tube (1).

7. The gastrointestinal endoscopy ring device according to claim 1, which facilitates precise control of tightening, is characterized in that: The outer surface of the walking rack (53) is provided with a wear-resistant layer, and the material of the wear-resistant layer is silicon carbide ceramic.

8. The gastrointestinal endoscopy ring device according to claim 1, which facilitates precise control of tightening, is characterized in that: The thicknesses of the friction-enhancing sleeve (585) and the pad (583) are two millimeters and three millimeters, respectively.

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