Telescopic enteroscope assembly

Abstract

The invention relates to the technical field of medical diagnosis, in particular to a telescopic enteroscope assembly which comprises a sleeve and two air bags, the sleeve is further provided with an auxiliary air bag, the auxiliary air bag comprises three air bag rings, and the three air bag rings are the middle air bag ring and the two side air bag rings; a first communicating air channel and a second communicating air channel are formed in the side wall of the cannula, one end of the first communicating air channel is communicated with the middle air bag ring, and the other end of the first communicating air channel is disconnected from the communicating air bag after the communicating air bag is squeezed by small intestine peristalsis; one of three ports of the three-way pipeline is communicated with the communicating air bag after the communicating air bag is squeezed by small intestine peristalsis, the other two ports of the three-way pipeline are communicated with the side air bag rings all the time, and after the air bag is squeezed by small intestine peristalsis, the two side air bag rings are higher than the middle air bag ring; the cross section of the auxiliary air bag is of a sucker structure with two high sides and a concave middle. Connection between the cannula and the intestinal tract is enhanced, cannula displacement is reduced, and the operation difficulty is lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of medical diagnosis, and particularly relates to a telescopic enteroscope assembly. Background Art

[0002] In the technical field of medical diagnosis, enteroscopy can assist doctors in more comprehensively diagnosing digestive system diseases. For small intestine endoscopy, due to the long and curved small intestine, push-type small intestine endoscopy is usually adopted, and it is necessary to rely on an airbag to support the inner wall of the small intestine to achieve fixation. As disclosed in the utility model patent with the authorization announcement number CN219578847U, a small intestine endoscope outer tube includes a tube, the tube is used for inserting into the body cavity, and an endoscope is inserted into the tube; a first airbag and a second airbag are sequentially arranged on the outer wall of the tube, and a first air supply pipeline, a second air supply pipeline and a water injection pipeline are also arranged on the side wall of the tube. The first air supply pipeline extends along the outer wall of the tube to the first airbag and is used for inflating and deflating the first airbag. The second air supply pipeline extends along the outer wall of the tube to the second airbag and is used for inflating and deflating the second airbag. The water injection pipeline is used for injecting water into the body cavity to lubricate the inner wall of the intestine. When this small intestine endoscope outer tube is in use, the first airbag and the second airbag are alternately inflated and deflated. After inflation, the first airbag and the second airbag respectively fix the small intestine and pull it back to straighten the intestine, reducing the operation time.

[0003] After the existing small intestine endoscope assembly extends into the small intestine, due to the intermittent strong peristalsis of the small intestine, the small intestine endoscope assembly will shift in the small intestine. Although double airbags are used for fixation in the prior art, under the peristaltic action of the small intestine in waves, the airbags cannot fix the small intestine endoscope assembly well, and there is still a problem of great difficulty in examination. Summary of the Invention

[0004] To overcome the deficiencies of the prior art, the present invention provides a telescopic enteroscope assembly to solve the technical problem that the small intestine endoscope assembly in the prior art is prone to shift due to the peristalsis of the small intestine, resulting in great difficulty in examination.

[0005] The telescopic enteroscope assembly of the present invention adopts the following technical solutions: A telescopic colonoscopy component includes a sleeve, a first airbag and a second airbag that are spaced apart and arranged on the sleeve. A water injection pipeline, a first air supply pipeline and a second air supply pipeline are provided in the sleeve. The first air supply pipeline is used for inflating and deflating the first airbag, and the second air supply pipeline is used for inflating and deflating the second airbag. An auxiliary airbag is further provided on the sleeve. The auxiliary airbag is composed of three airbag rings. The three airbag rings are arranged side by side and closely attached to the outer wall of the sleeve, forming a structure with a "mountain" - shaped cross - section in the initial state. The three airbag rings are respectively a middle airbag ring located in the middle position and side airbag rings located on both sides of the middle airbag ring. The side walls of the three airbag rings are not connected to each other; at least one of the first airbag and the second airbag is a communicating airbag that inflates the auxiliary airbag when being squeezed by small intestine peristalsis. The auxiliary airbag is located on one side of the communicating airbag. A first communicating air passage and a second communicating air passage are opened on the side wall of the sleeve. One end of the first communicating air passage is connected to the middle airbag ring, and the other end is connected to the communicating airbag when the communicating airbag is not squeezed by small intestine peristalsis, and is disconnected from the communicating airbag after the communicating airbag is squeezed by small intestine peristalsis. The second communicating air passage is a three - way pipeline. The three - way pipeline has three ports that are interconnected. One of the three ports is connected to the communicating airbag after the communicating airbag is squeezed by small intestine peristalsis, and the other two ports are always connected to the two side airbag rings respectively. After the communicating airbag is squeezed by small intestine peristalsis, the gas inside enters the side airbag rings through the second communicating air passage, making the height of the two side airbag rings greater than that of the middle airbag ring, so that the cross - section of the auxiliary airbag presents a sucker structure with high sides and a sunken middle, and the sucker structure sucks the inner wall of the small intestine.

[0006] Further, one end of the communicating airbag is fixedly connected to the outer wall of the sleeve, and the other end is movably connected to the outer wall of the sleeve. When the inflated communicating airbag is squeezed by small intestine peristalsis, the end of the communicating airbag movably connected to the outer wall of the sleeve can move along the extension direction of the sleeve.

[0007] Further, a moving sleeve is fixedly connected in a sealed manner to one end of the communicating airbag that is movably connected to the outer wall of the sleeve. One end of the communicating airbag is movably connected to the outer wall of the sleeve through the moving sleeve. The moving sleeve is movably sleeved on the outer wall of the sleeve and can reciprocate along the extending direction of the sleeve. An air passage is provided inside the moving sleeve. One end of the air passage communicates with the inside of the communicating airbag, and the other end is used to communicate with the first communicating air passage or the second communicating air passage. When the inflated communicating airbag is not squeezed by intestinal peristalsis, the moving sleeve is located at the initial position, and the air passage communicates with the first communicating air passage. The communicating airbag communicates with the intermediate airbag ring through the first communicating air passage. When the inflated communicating airbag is squeezed by intestinal peristalsis, the moving sleeve moves towards the auxiliary airbag, the first communicating air passage is blocked by the moving sleeve, and the air passage communicates with the second communicating air passage, so that the communicating airbag communicates with the side airbag ring through the second communicating air passage, and the gas inside the communicating airbag enters the side airbag ring through the second communicating air passage.

[0008] Further, internal threads are provided on the inner wall of the moving sleeve, external threads are provided on the outer wall of the sleeve, and the moving sleeve is screwed onto the sleeve through the cooperation of the internal threads and the external threads. An annular air chamber coaxial with the moving sleeve is provided inside the moving sleeve. The air passage is formed by the annular air chamber. Blades are provided inside the annular air chamber. When the inflated communicating airbag is squeezed by intestinal peristalsis, the gas inside the communicating airbag will drive the moving sleeve to rotate relative to the sleeve through the blades when passing through the annular air chamber, and the moving sleeve rotates and moves along the length direction of the sleeve at the same time.

[0009] Further, an arc-shaped support bar is fixed to the end surface of the end of the moving sleeve connected to the communicating airbag. There are multiple support bars, which are evenly spaced along the circumferential direction of the moving sleeve.

[0010] Further, a sealed membrane sleeve is connected between the end of the moving sleeve away from the support bar and the auxiliary airbag. One end of the sealed membrane sleeve is fixedly connected to the outside of the auxiliary airbag, and the other end is fixedly connected to the moving sleeve.

[0011] Further, diaphragms are provided on the outer periphery of the auxiliary airbag. There are multiple diaphragms, which are evenly spaced along the circumferential direction of the auxiliary airbag. An adjacent two diaphragms and the outer peripheral surface of the auxiliary airbag enclose a groove.

[0012] Further, there are two auxiliary airbags, namely a first auxiliary airbag and a second auxiliary airbag. There are also two communicating airbags, namely a first communicating airbag and a second communicating airbag. The first airbag is the first communicating airbag for inflating the first auxiliary airbag, and the second airbag is the second communicating airbag for inflating the second auxiliary airbag. The first auxiliary airbag is located on one side of the first airbag, and the second auxiliary airbag is located on one side of the second airbag. The structures of the two auxiliary airbags are the same. Two first communicating air passages and two second communicating air passages are respectively provided on the inner wall of the sleeve.

[0013] Further, the sleeve includes an inner tube and an outer tube sleeved together. The inner tube is movably inserted through the outer tube. The first airbag and the first auxiliary airbag are arranged on the inner tube, and the second airbag and the second auxiliary airbag are arranged on the outer tube.

[0014] Further, the first air supply pipeline and the water injection pipeline are respectively arranged in the inner tube, the second air supply pipeline is arranged in the outer tube, a camera is provided at the end of the inner tube, and a connecting wire connected to the camera is arranged in the inner tube.

[0015] The beneficial effect of the present invention is as follows: For a telescopic colonoscopy component of the present invention, by arranging an auxiliary airbag on at least one side of the first airbag and the second airbag, and utilizing the peristaltic extrusion of the intestinal circular muscle, the gas in the first airbag or the second airbag is pushed into the auxiliary airbag. The first communication air path and the second communication air path are respectively communicated with the middle airbag ring and the side airbag ring of the auxiliary airbag in sequence, and then the height of the two side airbag rings is made greater than that of the middle airbag ring, so that the cross-section of the auxiliary airbag presents a suction cup structure with two high sides and a concave middle. The suction cup structure sucks the inner wall of the small intestine, thereby increasing the connection strength between the intestines, reducing the displacement of the sleeve in the intestine, and lowering the operation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0017] Figure 1 Stereoscopic schematic diagram of an embodiment of a telescopic colonoscopy component of the present invention; Figure 2 Another stereoscopic schematic diagram of an embodiment of a telescopic colonoscopy component of the present invention (state where the inner tube and the outer tube are separated); Figure 3 Schematic diagram of the cooperation between the second airbag and the second auxiliary airbag and the outer tube in an embodiment of a telescopic colonoscopy component of the present invention; Figure 4 Another schematic diagram of the cooperation between the second airbag and the second auxiliary airbag and the outer tube in an embodiment of a telescopic colonoscopy component of the present invention (the moving sleeve rotates and drives the second airbag to twist); Figure 5 For Figure 3 Cross-sectional schematic diagram along the length direction of the outer tube; Figure 6 is Figure 5 an enlarged schematic view of local A in Figure 7 is Figure 6 another state schematic view (after the moving sleeve moves towards the second auxiliary airbag); Figure 8 is Figure 3 another cross-sectional schematic view along the length direction of the outer tube in Figure 9 is Figure 8 an enlarged schematic view of local D in Figure 10 is a schematic view of the second airbag exhausting through the second air supply pipeline in an embodiment of a telescopic colonoscope assembly of the present invention; Figure 11 is a three-dimensional schematic view (partially sectioned) of the moving sleeve in an embodiment of a telescopic colonoscope assembly of the present invention; Figure 12 is a three-dimensional schematic of the inner tube in an embodiment of a telescopic colonoscope assembly of the present invention.

[0018] In the figure: 200, sleeve; 201, first air supply pipeline; 202, biopsy pipeline; 2021, biopsy port; 203, water injection pipeline; 2031, water injection hole; 204, connecting line; 2041, camera; 205, first airbag; 206, inner tube; 300, outer tube; 301, second airbag; 302, second air supply pipeline; 3021, air outlet hole; 303, auxiliary airbag; 304, socket hole; 305, middle airbag ring; 306, diaphragm; 307, side airbag ring; 308, second communication air path; 3081, first communication air path; 309, sealing film sleeve; 310, moving sleeve; 311, support strip; 312, sealing ring; 313, internal thread; 314, blade; 315, support rib; 316, external thread. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] An embodiment of a telescopic colonoscope assembly of the present invention, as Figures 1 to 12As shown in the figure, the telescopic colonoscopy assembly includes a sleeve 200, and further includes a first airbag 205 and a second airbag 301 which are arranged on the outer wall of the sleeve 200 at intervals along the extending direction of the sleeve 200. The sleeve 200 is used to extend into the intestine for examining the interior of the intestine. The sleeve 200 includes an inner tube 206 and an outer tube 300 which are sleeved together. The outer tube 300 has a socket hole 304 inside, and the inner tube 206 movably passes through the socket hole 304 of the outer tube 300. Both the inner tube 206 and the outer tube 300 are flexible hoses that can be bent and deformed, so that they can be bent and deformed as the intestine bends. It should be noted here that since the lengths of the inner tube 206 and the outer tube 300 are relatively long, only a section of the lengths of the inner tube 206 and the outer tube 300 are shown in the drawings of the present invention. The first airbag 205 is arranged on the outer side wall of the inner tube 206, and the second airbag 301 is arranged on the outer side wall of the outer tube 300. Here, it is set that the first airbag 205 is located in front of the second airbag 301, then the inner tube 206 is arranged at the front end of the first airbag 205. During endoscopic examination, the rear end of the inner tube 206 is inserted into the outer tube 300, the first airbag 205 and the second airbag 301 approach each other, and then the front end of the inner tube 206 is inserted into the intestine from the anus. The front ends of the first airbag 205 and the inner tube 206 will enter the intestine prior to the second airbag 301 and the outer tube 300. A water injection pipeline 203, a first air supply pipeline 201 and a second air supply pipeline 302 are arranged inside the sleeve 200. The water injection pipeline 203 is used to inject water into the intestine to lubricate the interior of the intestine. The first air supply pipeline 201 is used to inflate and deflate the first airbag 205. The second air supply pipeline 302 is used to inflate and deflate the second airbag 301. During endoscopic examination, the first airbag 205 and the second airbag 301 are alternately inflated and deflated. When the first airbag 205 and the second airbag 301 are inflated, they support the inner wall of the intestine, thereby connecting the sleeve 200 with the intestine. When the sleeve 200 is pulled back, the bent intestine can be straightened to facilitate a comprehensive examination of the intestinal fold position.

[0021] In the present invention, an auxiliary airbag 303 is further arranged on the sleeve 200. In this embodiment, there are two auxiliary airbags 303, which are respectively arranged in one-to-one correspondence with the first airbag 205 and the second airbag 301. The two auxiliary airbags 303 are respectively a first auxiliary airbag and a second auxiliary airbag. The first auxiliary airbag is located on one side of the first airbag 205, and the second auxiliary airbag is located on one side of the second airbag 301. The first airbag 205 and the second airbag 301 respectively constitute a communicating airbag for inflating the two auxiliary airbags 303. Among them, the first airbag 205 is a first communicating airbag for inflating the first auxiliary airbag, and the second airbag 301 is a second communicating airbag for inflating the second auxiliary airbag. In this embodiment, the structures of the two auxiliary airbags 303 are the same, and both of the two auxiliary airbags 303 are composed of three airbag rings. Taking the second auxiliary airbag as an example, as Figures 2 to 11As shown, the three airbag rings of the second auxiliary airbag are arranged side by side and closely attached to the outer wall of the outer tube 300. The three airbag rings are respectively an intermediate airbag ring 305 located in the middle position and side airbag rings 307 located on both sides of the intermediate airbag ring 305. The three airbag rings form a structure with a "mountain" - shaped cross - section, and the side walls of the three airbag rings are not connected to each other. A first communication air path 3081 and a second communication air path 308 are provided on the side wall of the outer tube 300. One end of the first communication air path 3081 is connected to the intermediate airbag ring 305, and the other end is connected to the second airbag 301 when the second airbag 301 is not squeezed by intestinal peristalsis, and is disconnected from the second airbag 301 after the second airbag 301 is squeezed by intestinal peristalsis. The second communication air path 308 is a three - way pipeline. The three - way pipeline has three interconnected ports. One of the three ports is connected to the second airbag 301 after the second airbag 301 is squeezed by intestinal peristalsis, and the other two ports are always connected to the side airbag rings 307 respectively. After the inflated second airbag 301 is squeezed by intestinal peristalsis, the gas inside will flow along Figure 7 the direction of arrow B in Figure 7 and enter the side airbag rings 307 through the second communication air path 308, making the height of the two side airbag rings 307 greater than that of the intermediate airbag ring 305, so that the cross - section of the second auxiliary airbag presents a sucker structure with two high sides and a concave middle, and the sucker structure sucks the inner wall of the small intestine.

[0022] In this embodiment, one end of the second airbag 301 is fixedly connected to the outer wall of the outer tube 300, and the other end is movably connected to the outer wall of the outer tube 300. When the inflated second airbag 301 is squeezed by intestinal peristalsis, the end of the second airbag 301 that is movably connected to the outer wall of the outer tube 300 can move along Figure 7It moves in the direction indicated by arrow C towards the second auxiliary airbag. In this embodiment, one end of the second airbag 301 that is movably connected to the outer wall of the outer tube 300 is fixedly connected in a sealed manner with a moving sleeve 310. One end of the second airbag 301 is movably connected to the outer wall of the sleeve 200 through the moving sleeve 310. The moving sleeve 310 is movably sleeved on the outer wall of the sleeve 200 and can reciprocate along the extension direction of the sleeve 200. In this embodiment, an internal thread 313 is provided on the inner wall of the moving sleeve 310, and an external thread 316 is provided on the outer wall of the sleeve 200. The moving sleeve 310 is screwed onto the sleeve 200 by the cooperation of the internal thread 313 and the external thread 316. An annular air chamber coaxial with the moving sleeve 310 is provided inside the moving sleeve 310. The annular air chamber constitutes an air passage for communicating the auxiliary airbag 303 and the second airbag 301. In this embodiment, a blade 314 is provided inside the annular air chamber. When the inflated second airbag 301 is squeezed by intestinal peristalsis and the gas inside the second airbag 301 passes through the annular air chamber, it will drive the moving sleeve 310 to rotate relative to the outer tube 300 through the blade 314. The moving sleeve 310 at the end of the second airbag 301 can move along the length direction of the outer tube 300 while rotating. When the moving sleeve 310 rotates relative to the outer tube 300, since one end of the second airbag 301 far from the moving sleeve 310 is fixedly connected to the outer tube 300, one end of the second airbag 301 connected to the moving sleeve 310 will be twisted relative to the other end under the drive of the moving sleeve 310, as Figure 4 shown in the state. Since the second airbag 301 is made of a material that can shrink and deform, when a period of intestinal peristalsis ends, under the action of the self-resetting elasticity of the second airbag 301, one end of the second airbag 301 connected to the moving sleeve 310 will drive the moving sleeve 310 to rotate in the reverse direction and reset.

[0023] In this embodiment, one end of the air duct is in communication with the interior of the second airbag 301, and the other end is used to communicate with the first communication air path 3081 or the second communication air path 308. When the inflated second airbag 301 is not squeezed by intestinal peristalsis, the moving sleeve 310 is in the initial position, the air duct is in communication with the first communication air path 3081, and the second airbag 301 is in communication with the intermediate airbag ring 305 through the first communication air path 3081. When the inflated second airbag 301 is squeezed by intestinal peristalsis, the blades 314 in the annular air chamber are pushed by the gas in the second airbag 301, causing the moving sleeve 310 to rotate relative to the outer tube 300. As a result, the moving sleeve 310 moves a certain distance towards the second auxiliary airbag, blocking the first communication air path 3081 with the moving sleeve 310. At this time, the air duct in the moving sleeve 310 is in communication with the second communication air path 308, enabling the second airbag 301 to be in communication with the side airbag ring 307 through the second communication air path 308. The gas inside the second airbag 301 enters the side airbag ring 307 through the second communication air path 308, making the height of the two side airbag rings 307 greater than that of the intermediate airbag ring 305, and causing the cross-section of the second auxiliary airbag to be in the shape of a suction cup with a high middle and a concave middle, and the suction cup structure adheres to the inner wall of the small intestine.

[0024] Having the same structure as the above-mentioned second auxiliary airbag, the three airbag rings of the first auxiliary airbag are arranged side by side and closely attached to the outer wall of the inner tube 206. The three airbag rings are respectively the intermediate airbag ring 305 located in the middle position and the side airbag rings 307 located on both sides of the intermediate airbag ring 305. In the initial state, the three airbag rings form a structure with a cross-section in the shape of a "mountain", and the side walls of the three airbag rings are not in communication with each other. The side wall of the inner tube 206 is also provided with a first communication air path 3081 and a second communication air path 308. One end of the first communication air path 3081 is in communication with the intermediate airbag ring 305 of the first auxiliary airbag, and the other end is in communication with the first airbag 205 when the first airbag 205 is not squeezed by intestinal peristalsis, and is disconnected from the first airbag 205 after the first airbag 205 is squeezed by intestinal peristalsis. The second communication air path 308 is a three-way pipeline, and the three-way pipeline has three ports that are in communication with each other. One of the three ports is in communication with the first airbag 205 after the first airbag 205 is squeezed by intestinal peristalsis, and the other two ports are always in communication with the side airbag rings 307 respectively. After the first airbag 205 is squeezed by intestinal peristalsis, the gas inside enters the side airbag rings 307 through the second communication air path 308, making the height of the two side airbag rings 307 greater than that of the intermediate airbag ring 305, and causing the cross-section of the first auxiliary airbag to be in the shape of a suction cup with a high middle and a concave middle, and the suction cup structure adheres to the inner wall of the small intestine.

[0025] In this embodiment, on the end face of each moving sleeve 310 that is connected to the first airbag 205 and the second airbag 301 respectively, an arc-shaped support bar 311 is fixed. There are multiple support bars 311, and the multiple support bars 311 are evenly spaced along the circumferential direction of the moving sleeve 310, and are used to support the inner walls of the first airbag 205 and the second airbag 301. A sealing film sleeve 309 is connected between each moving sleeve 310 away from the support bar 311 and the first auxiliary airbag and the second auxiliary airbag respectively. One end of the sealing film sleeve 309 located between the first airbag 205 and the first auxiliary airbag is fixedly connected to the outside of the first auxiliary airbag, and the other end is fixedly connected to the moving sleeve 310 at the end of the first airbag 205. One end of the sealing film sleeve 309 located between the second airbag 301 and the second auxiliary airbag is fixedly connected to the outside of the second auxiliary airbag, and the other end is fixedly connected to the moving sleeve 310 at the end of the second airbag 301.

[0026] Diaphragms 306 are provided on the outer peripheries of the first auxiliary airbag and the second auxiliary airbag. There are multiple diaphragms 306 on each auxiliary airbag 303, and the multiple diaphragms 306 are evenly spaced along the circumferential direction of the corresponding auxiliary airbag 303 respectively. An adjacent two diaphragms 306 on each auxiliary airbag 303 and the outer peripheral surface of this auxiliary airbag 303 enclose a groove. In order to improve the sealing effect, sealing rings 312 are respectively provided on both sides of the outlet of the annular air chamber on the inner wall of the moving sleeve 310. In order to improve the strength of the moving sleeve 310, support ribs 315 are provided at the outlet position of the annular air chamber inside the moving sleeve 310. There are multiple support ribs 315, and they are evenly spaced along the circumferential direction of the moving sleeve 310.

[0027] In this embodiment, a water injection hole 2031 and a biopsy port 2021 are provided at the front end of the inner tube 206. The first air supply pipeline 201 and the water injection pipeline 203 are respectively arranged in the inner tube 206, and the water injection pipeline 203 is communicated with the water injection hole 2031 at the front end of the inner tube 206. The inner tube 206 is further provided with a biopsy pipeline 202, and the biopsy pipeline 202 is communicated with the biopsy port 2021. The second air supply pipeline 302 is arranged in the outer tube 300. One end of the first air supply pipeline 201 extending into the inner tube 206 and one end of the second air supply pipeline 302 extending into the outer tube 300 respectively penetrate through the outer walls of the inner tube 206 and the outer tube 300 to form air outlet holes 3021. A camera 2041 is provided at the front end of the inner tube 206. In this embodiment, the camera 2041 is a CMOS camera, and a connection line 204 connected to the camera 2041 is provided in the inner tube 206.

[0028] When a telescopic colonoscopy assembly of the present invention is in use, the sleeve 200 together with the first airbag 205 and the second airbag 301 are inserted into the intestine from the back to the front. At this time, neither the first airbag 205 nor the second airbag 301 is inflated and is in a contracted state. When the first airbag 205 and the second airbag 301 reach the small intestine position, first, the second airbag 301 is inflated through the second air supply pipeline 302, so that the second airbag 301 expands and presses against the inner wall of the intestine. Then, while keeping the position of the outer tube 300 unchanged, the inner tube 206 is pushed forward, so that the inner tube 206 drives the first airbag 205 to move forward. The first airbag 205 gradually moves away from the second airbag 301. When the first airbag 205 moves forward a certain distance, the forward pushing of the inner tube 206 is stopped. Then, the first air supply pipeline 201 inflates the first airbag 205, so that the first airbag 205 expands and presses against the inner wall of the intestine. Then, the gas in the second airbag 301 is pumped out through the second air supply pipeline 302, so that the second airbag 301 is in a contracted state. At this time, the first airbag 205 remains inflated and presses against the inner wall of the intestine. Then, while keeping the position of the inner tube 206 unchanged, the outer tube 300 is pushed forward. The outer tube 300 and the second airbag 301 move forward together and approach the first airbag 205. When the second airbag 301 approaches the first airbag 205, the pushing of the outer tube 300 is stopped. Then, the second airbag 301 is inflated through the second air supply pipeline 302, so that both the second airbag 301 and the first airbag 205 are inflated and press against the inner wall of the intestine. Then, the inner tube 206 and the outer tube 300 are simultaneously pulled back, so that the first airbag 205 and the second airbag 301 straighten the inner wall of the intestine backward. Then, the first air supply pipeline 201 aspirates the gas in the first airbag 205, so that the first airbag 205 contracts, and the second airbag 301 remains inflated. Then, the inner tube 206 is pushed forward again. The inner tube 206 drives the first airbag 205 to move forward, and the above operations are repeated, so that the first airbag 205 and the second airbag 301 are alternately inflated and deflated, and alternately pushed forward, and then synchronously pulled back. The camera 2041 at the front end of the inner tube 206 takes pictures of the inside of the intestine and is connected to an external display device through the connection line 204.

[0029] Since there will be continuous peristalsis in the small intestine, when the first airbag 205 and the second airbag 301 are in a contracted state, the first airbag 205 and the second airbag 301 will not be squeezed by intestinal peristalsis. When the first airbag 205 and the second airbag 301 are in an inflated state, the first airbag 205 and the second airbag 301 will be squeezed by intestinal peristalsis. In this way, the gas in the first airbag 205 and the second airbag 301 will respectively pass through the annular air chambers in the corresponding moving sleeves 310 and enter the first auxiliary airbag and the second auxiliary airbag. Specifically, taking the second auxiliary airbag as an example, when the second airbag 301 is not squeezed by intestinal peristalsis, the position of the moving sleeve 310 connected to the second airbag 301 is as Figure 5 andFigure 6 As shown, at this time, the movable sleeve 310 blocks the second communication air passage 308, and the second airbag 301 communicates with the middle airbag ring 305 of the second auxiliary airbag through the first communication air passage 3081. When the inflated second airbag 301 is squeezed by intestinal peristalsis, the air pressure in the second airbag 301 will instantaneously increase, causing the gas in the second airbag 301 to flow towards the second auxiliary airbag. The blade 314 in the annular air chamber of the movable sleeve 310 is pushed by the gas from the second airbag 301, causing the movable sleeve 310 to rotate relative to the outer tube 300. Furthermore, the movable sleeve 310 moves a certain distance towards the second auxiliary airbag, causing the first communication air passage 3081 to be blocked by the movable sleeve 310. At this time, the annular air chamber in the movable sleeve 310 communicates with the second communication air passage 308, enabling the second airbag 301 to communicate with the side airbag ring 307 through the second communication air passage 308. The gas inside the second airbag 301 enters the side airbag ring 307 through the second communication air passage 308, thereby making the height of the two side airbag rings 307 greater than that of the middle airbag ring 305, and making the cross-section of the second auxiliary airbag in the shape of a suction cup structure with high sides and a sunken middle. The suction cup structure adheres to the inner wall of the small intestine. When the first airbag 205 is squeezed by peristalsis, the change process of the first auxiliary airbag is the same as that of the second auxiliary airbag described above. The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A telescopic colonoscope assembly, comprising a sleeve (200), a first airbag (205) and a second airbag (301) spaced apart on the sleeve (200). A water injection pipeline (203), a first air supply pipeline (201) and a second air supply pipeline (302) are provided inside the sleeve (200). The first air supply pipeline (201) is used for inflating and deflating the first airbag (205), and the second air supply pipeline (302) is used for inflating and deflating the second airbag (301). Characterized in that, an auxiliary airbag (303) is further provided on the sleeve (200). The auxiliary airbag (303) is composed of three airbag rings. The three airbag rings are arranged side by side and closely attached to the outer wall of the sleeve (200), forming a structure with a "mountain"-shaped cross-section in the initial state. The three airbag rings are respectively an intermediate airbag ring (305) located in the middle position and side airbag rings (307) located on both sides of the intermediate airbag ring (305). The side walls of the three airbag rings are not connected to each other; at least one of the first airbag (205) and the second airbag (301) is a communicating airbag. When the communicating airbag is squeezed by intestinal peristalsis, it inflates the inside of the auxiliary airbag (303). The auxiliary airbag (303) is located on one side of the communicating airbag. A first communicating air passage (3081) and a second communicating air passage (308) are provided on the side wall of the sleeve (200). One end of the first communicating air passage (3081) is connected to the intermediate airbag ring (305), and the other end is connected to the communicating airbag when the communicating airbag is not squeezed by intestinal peristalsis, and is disconnected from the communicating airbag after the communicating airbag is squeezed by intestinal peristalsis. The second communicating air passage (308) is a three-way pipeline. The three-way pipeline has three ports that are interconnected. One of the three ports is connected to the communicating airbag after the communicating airbag is squeezed by intestinal peristalsis, and the other two ports are respectively always connected to the two side airbag rings (307). After the communicating airbag is squeezed by intestinal peristalsis, the gas inside enters the side airbag rings (307) through the second communicating air passage (308), making the height of the two side airbag rings (307) greater than that of the intermediate airbag ring (305), so that the cross-section of the auxiliary airbag (303) is a sucker structure with two high sides and a middle depression, and the sucker structure sucks the inner wall of the small intestine.

2. The telescopic colonoscope assembly according to claim 1, wherein: One end of the communicating airbag is fixedly connected to the outer wall of the sleeve (200), and the other end is movably connected to the outer wall of the sleeve (200). When the inflated communicating airbag is squeezed by intestinal peristalsis, the end of the communicating airbag movably connected to the outer wall of the sleeve (200) can move along the extension direction of the sleeve (200).

3. The telescopic colonoscope assembly according to claim 2, wherein: One end of the connecting airbag, which is movably connected to the outer wall of the sleeve (200), is fixedly connected in a sealed manner with a movable sleeve (310). One end of the connecting airbag is movably connected to the outer wall of the sleeve (200) through the movable sleeve (310). The movable sleeve (310) is movably sleeved on the outer wall of the sleeve (200) and can reciprocate along the extending direction of the sleeve (200). An air passage is arranged inside the movable sleeve (310). One end of the air passage is communicated with the inside of the connecting airbag, and the other end is used to be communicated with the first connecting air passage (3081) or the second connecting air passage (308). When the inflated connecting airbag is not squeezed by intestinal peristalsis, the movable sleeve (310) is located at the initial position, and the air passage is communicated with the first connecting air passage (3081). The connecting airbag is communicated with the intermediate airbag ring (305) through the first connecting air passage (3081). When the inflated connecting airbag is squeezed by intestinal peristalsis, the movable sleeve (310) moves towards the auxiliary airbag (303), the first connecting air passage (3081) is blocked by the movable sleeve (310), and the air passage is communicated with the second connecting air passage (308), so that the connecting airbag is communicated with the side airbag ring (307) through the second connecting air passage (308), and the gas inside the connecting airbag enters the side airbag ring (307) through the second connecting air passage (308).

4. The telescopic colonoscope assembly according to claim 3, wherein: Internal threads (313) are arranged on the inner wall of the movable sleeve (310), external threads (316) are arranged on the outer wall of the sleeve (200), and the movable sleeve (310) is screwed onto the sleeve (200) through the cooperation of the internal threads (313) and the external threads (316). An annular air chamber coaxial with the movable sleeve (310) is arranged inside the movable sleeve (310). The air passage is formed by the annular air chamber. Blades (314) are arranged inside the annular air chamber. When the inflated connecting airbag is squeezed by intestinal peristalsis, the gas inside the connecting airbag will drive the movable sleeve (310) to rotate relative to the sleeve (200) through the blades (314) when passing through the annular air chamber, and the movable sleeve (310) rotates and moves along the length direction of the sleeve (200) at the same time.

5. The telescopic colonoscope assembly according to claim 4, wherein: Arc-shaped support bars (311) are fixed on the end surface of the end of the movable sleeve (310) connected to the connecting airbag. There are multiple support bars (311), and they are evenly spaced along the circumferential direction of the movable sleeve (310).

6. The telescopic colonoscope assembly according to claim 5, wherein: A sealing membrane sleeve (309) is connected between one end of the movable sleeve (310) far from the support bar (311) and the auxiliary airbag (303). One end of the sealing membrane sleeve (309) is fixedly connected to the outside of the auxiliary airbag (303), and the other end is fixedly connected to the movable sleeve (310).

7. The telescopic colonoscope assembly according to claim 6, wherein: A diaphragm (306) is arranged on the outer periphery of the auxiliary airbag (303). There are multiple diaphragms (306), and multiple diaphragms (306) are evenly spaced along the circumferential direction of the auxiliary airbag (303). A groove is formed between two adjacent diaphragms (306) and the outer peripheral surface of the auxiliary airbag (303).

8. The telescopic colonoscope assembly according to any one of claims 1-7, characterized in that: There are two auxiliary airbags (303), namely a first auxiliary airbag and a second auxiliary airbag. There are also two connecting airbags, namely a first connecting airbag and a second connecting airbag. The first airbag (205) is the first connecting airbag for inflating the first auxiliary airbag, and the second airbag (301) is the second connecting airbag for inflating the second auxiliary airbag. The first auxiliary airbag is located on one side of the first airbag (205), and the second auxiliary airbag is located on one side of the second airbag (301). The structures of the two auxiliary airbags (303) are the same. Two first connecting air paths (3081) and two second connecting air paths (308) are respectively provided on the inner wall of the sleeve (200).

9. The telescopic colonoscope assembly according to claim 8, wherein: The sleeve (200) includes an inner tube (206) and an outer tube (300) sleeved together. The inner tube (206) is movably inserted through the outer tube (300). The first airbag (205) and the first auxiliary airbag are arranged on the outer side wall of the inner tube (206), and the second airbag (301) and the second auxiliary airbag are arranged on the outer side wall of the outer tube (300).

10. The telescopic colonoscope assembly according to claim 9, characterized in that: The first air supply pipeline (201) and the water injection pipeline (203) are respectively arranged in the inner tube (206), and the second air supply pipeline (302) is arranged in the outer tube (300). There is a camera (2041) at the end of the inner tube (206), and a connecting wire (204) connected to the camera (2041) is arranged in the inner tube (206).

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