Anti-bleeding loop ligature assembly and gastrointestinal endoscope equipment for polyp resection operation

Abstract

The utility model provides an anti-bleeding loop ligature assembly and gastrointestinal endoscope equipment used in polyp resection surgery. The loop ligature assembly comprises a sleeve, an extractor, a loop ligature device and a control end. The sleeve comprises a first containing cavity and a second containing cavity, the suction device comprises a suction cup, a first pipeline and a supporting rod, the suction cup communicates with the first pipeline, and at least part of the first pipeline is located in the first containing cavity. The loop ligature device comprises a loop ligature connector and a second pipeline which are connected with each other, at least part of the second pipeline is located in the second containing cavity, and the loop ligature connector comprises an annular loop ligature rope. The control end is connected with the end, away from the suction cup, of the first pipeline and connected with the end, away from the loop ligature connector, of the second pipeline, and the control end is configured to extract gas from the first pipeline. The first pipeline comprises a first side wall facing the loop ligature device and a second side wall away from the loop ligature device, the supporting rod is connected with the first side wall and is of an elastic structure, and the section, connected with the supporting rod, of the first pipeline is a flexible pipeline.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of medical devices, in particular, to a bleeding-preventing ligation assembly for use in polyp resection surgery and a gastrointestinal endoscope. BACKGROUND

[0002] Polyp refers to an abnormal growth of tissue protruding from the mucosal surface, which is called polyp without determining pathological nature. Generally speaking, polyp is formed by the growth and aggregation of cells originating from the mucosa. Polyp is a common clinical disease, and most polyps are benign lesions that do not endanger life, but some polyps have a tendency to cancer and need to be removed in time.

[0003] In the current polyp removal collection, the application of high-frequency electrocoagulation resection is the most widely used. In the process of removing pedunculated polyps or narrow pedunculated polyps, the heat effect generated by high-frequency current is used to promote tissue coagulation and necrosis to achieve the purpose of removing polyps. When cutting the root of the polyp, the polyp is soft and prone to collapse, making it difficult to retrieve the root, resulting in close contact between the polyp and the electric wire, damaging the structure of the polyp, especially for smaller polyps. In addition, some polyps grow near blood vessels, and direct removal of the polyp may cause bleeding. Therefore, before removing the polyp, the polyp needs to be ligated. However, in the case of polyp collapse, it is difficult for the ligation rope to snare the polyp to complete the ligation operation, thereby making it difficult to reduce the difficulty and risk of polyp removal surgery in this situation. SUMMARY

[0004] The first aspect of the present disclosure provides a bleeding-preventing ligation assembly for use in polyp resection surgery. The ligation assembly includes a sleeve, a suction device, a ligation device, and a control end. The sleeve includes a first accommodating cavity and a second accommodating cavity. The suction device includes a suction disc, a first pipeline, and a support rod. The suction disc is in communication with the first pipeline, and at least a portion of the first pipeline is located in the first accommodating cavity. The ligation device includes a ligation connector and a second pipeline. The ligation connector is connected to the second pipeline, and at least a portion of the second pipeline is located in the second accommodating cavity. The ligation connector includes a ring-shaped ligation rope, and the ligation rope is a flexible rope. The control end is connected to an end of the first pipeline away from the suction disc and an end of the second pipeline away from the ligation connector. The control end is configured to extract gas from the first pipeline. The first pipeline includes a first side wall facing the ligation device and a second side wall away from the ligation device. The support rod is connected to the first side wall. The support rod is a flexible structure, and a section of the first pipeline connected to the support rod is a flexible pipeline. When a negative pressure is generated in the first pipeline, the second side wall of the first pipeline is contracted, the support rod and the first pipeline are bent towards the side where the second side wall is located, and the suction disc is away from the ligation rope.

[0005] In the above scheme, after encountering the fallen polyp, the ligation rope of the ligation device can be sleeved on the periphery of the polyp, and then the suction disc of the suction device is attached to the polyp. After that, the control end is used to extract gas from the first pipeline, so that the suction disc is attached to the polyp. In this process, the flexible pipeline part of the first pipeline will shrink due to negative pressure, but under the support of the support rod, the first pipeline bends towards the second side wall, so that the suction disc extends away from the ligation rope, thereby making the polyp stand up. Then, the ligation device can be operated to complete the binding of the polyp root by the ligation rope, thereby avoiding bleeding at the position of the polyp in the subsequent polyp removal operation.

[0006] In one specific embodiment of the first aspect of the present disclosure, the second side wall of the first pipeline is provided with a pleated structure. In this way, the contraction capability of the second side wall of the first pipeline can be improved, so as to improve the bending amplitude of the first pipeline.

[0007] In one specific embodiment of the first aspect of the present disclosure, the ligation rope comprises an insulating material. In this way, in the subsequent operation of removing the polyp, the ligation rope can be prevented from being electrified and losing the binding function.

[0008] In one specific embodiment of the first aspect of the present disclosure, the ligation rope is a nylon rope.

[0009] In one specific embodiment of the first aspect of the present disclosure, the suction device can further comprise a propulsion chamber, a baffle and a third pipeline. The propulsion chamber is located in the first accommodating cavity and comprises a propulsion cavity. The baffle is located in the propulsion chamber and divides the propulsion cavity into a first sub-propulsion cavity and a second sub-propulsion cavity. The first sub-propulsion cavity is located on the side of the second sub-propulsion cavity facing the suction disc. The first pipeline penetrates the propulsion cavity and the baffle. The baffle is in sliding connection with the propulsion chamber, and the first pipeline is in fixed connection with the baffle. The end of the propulsion chamber facing the suction disc is in sliding connection with the first pipeline. The third pipeline is located in the first accommodating cavity. One end of the third pipeline is in communication with the second sub-propulsion cavity, and the other end is in connection with the control end. The control end is configured to input or extract gas into or from the third pipeline.

[0010] In the above scheme, by controlling the input or extraction of gas into or from the third pipeline, the pressure difference between the first sub-propulsion cavity and the second sub-propulsion cavity can be controlled, so that the baffle can be moved to make the suction disc retract or extend relative to the entire sleeve. In this way, in the case where no fallen polyp is encountered, the suction device can be retracted into the sleeve to avoid interference with the operation of other devices such as the ligation device. Correspondingly, in the case where a fallen polyp is encountered, the suction disc of the suction device can be extended out of the sleeve for the operation of adsorbing the polyp.

[0011] In one embodiment of the first aspect of the present disclosure, the portion of the support rod distal to the suction cup extends to the propulsion chamber to be fixedly connected with the baffle. In this way, the force generated by the movement of the baffle can be fully applied to the first pipe to drive the movement of the suction cup.

[0012] In one embodiment of the first aspect of the present disclosure, the portion of the first pipe located in the second sub-propulsion chamber is a wave pipe. In this way, the stretching capacity of the portion of the first pipe located in the second sub-propulsion chamber can be increased to facilitate the movement of the baffle.

[0013] In one embodiment of the first aspect of the present disclosure, the end of the propulsion chamber distal to the suction cup is fixedly connected with the first pipe.

[0014] In one embodiment of the first aspect of the present disclosure, the portion of the first pipe located in the first sub-propulsion chamber has an opening to allow the first pipe to communicate with the first sub-propulsion chamber. In this way, when the second sub-propulsion chamber is filled with gas through the third pipe to increase the gas pressure, the gas extracted from the first pipe will also extract the gas from the second sub-propulsion chamber at the same time, thereby reducing the gas pressure of the second sub-propulsion chamber. In this way, the pressure difference between the first sub-propulsion chamber and the second sub-propulsion chamber can be increased to facilitate the movement of the baffle.

[0015] The second aspect of the present disclosure provides a gastrointestinal endoscope device, which comprises the ligation assembly of the first aspect described above. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the ligation assembly provided by an embodiment of the present disclosure is shown.

[0017] Figure 2 The end structure of the ligation assembly is shown. Figure 1 The cross-sectional view of a part of the ligation assembly is shown.

[0018] Figure 3 The end structure of the ligation assembly is shown. Figure 1 The enlarged view of the end structure of the ligation assembly is shown.

[0019] Figure 4 The structure of the suction cup in the ligation assembly is shown. Figure 1 The structure of the suction cup in the ligation assembly is shown.

[0020] Figures 5A to 5C The operation principle of the ligation assembly to ligate a polyp is shown. Figure 1 The operation principle of the ligation assembly to ligate a polyp is shown.

[0021] Figure 6 The structure of a part of the ligation assembly provided by an embodiment of the present disclosure is shown.

[0022] REFERENCE SIGNS

[0023] 10 - polyp;

[0024] 100 - cannula; 101 - first accommodating cavity; 102 - second accommodating cavity;

[0025] 200 - suction device; 210 - suction cup; 220 - first pipe; 230 - support rod; 240 - propulsion chamber; 241 - first sub-propulsion cavity; 242 - second sub-propulsion cavity; 250 - baffle; 260 - third pipe;

[0026] 300 - ligator; 310 - ligature; 320 - second pipe;

[0027] 400 - control end. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present specification will be described clearly and completely in combination with the drawings in the embodiments of the present specification. Obviously, the described embodiments are only part of the embodiments of the present specification, rather than all the embodiments. Based on the embodiments in the present specification, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present specification.

[0029] In the polyp removal operation through a gastrointestinal endoscope, the polyp is ligated (through the ligator described below) for sensitive areas (such as near blood vessels) to avoid bleeding after the polyp is removed. Based on the requirement of tightness of ligation, the rope (such as the ligature described below) used for ligation must be a flexible rope. However, in the case of a polyp that is inverted, the flexible ligature cannot apply force to the polyp, making it difficult to set on the root of the polyp and complete the ligation of the polyp.

[0030] The embodiments of the present disclosure provide a bleeding-preventing ligation assembly and a gastrointestinal endoscope device in a polyp removal operation to at least solve the above technical problems. As shown in FIG. 1, the bleeding-preventing ligation assembly comprises a ligator 300 and a ligature 310. Figures 1 to 3As shown, the ligation assembly can include a sleeve 100, a suction device 200, a ligation device 300, and a control end 400. The sleeve 100 includes a first accommodating cavity 101 and a second accommodating cavity 102, the suction device 200 includes a suction disc 210, a first pipeline 220, and a support rod 230, the suction disc 210 is in communication with the first pipeline 220, and at least part of the first pipeline 220 is located in the first accommodating cavity 101. The ligation device 300 includes a ligation joint and a second pipeline 320, the ligation joint is connected with the second pipeline 320, at least part of the second pipeline 320 is located in the second accommodating cavity 102, the ligation joint includes a loop-shaped ligation rope 310, and the ligation rope 310 is a flexible rope. The control end 400 is connected with an end of the first pipeline 220 away from the suction disc 210 and an end of the second pipeline 320 away from the ligation joint, and the control end 400 is configured to extract gas from the first pipeline 220. The first pipeline 220 includes a first side wall facing the ligation device 300 and a second side wall away from the ligation device 300, the support rod 230 is connected with the first side wall, the support rod 230 is a flexible structure, and a section of the first pipeline 220 connected with the support rod 230 is a flexible pipeline, so that the second side wall of the first pipeline 220 is contracted after a negative pressure is generated in the first pipeline 220, so that the support rod 230 and the first pipeline 220 are bent to the side where the second side wall is located, and the suction disc 210 is away from the ligation rope 310. In the ligation assembly, after encountering a prolapsed polyp, the ligation rope 310 of the ligation device 300 can be sleeved on the periphery of the polyp, then the suction disc 210 of the suction device 200 is attached to the polyp, and then the control end 400 extracts gas from the first pipeline 220 to make the suction disc 210 attached to the polyp. In this process, the flexible pipeline section of the first pipeline 220 will contract due to the negative pressure, but under the support of the support rod 230, the first pipeline 220 is bent to the second side wall, so that the suction disc 210 extends away from the ligation rope 310, so that the polyp stands up, and then the ligation device 300 can be operated to make the ligation rope 310 complete the binding of the root of the polyp, thereby avoiding bleeding at the position of the polyp in subsequent polyp removal operations.

[0031] In the embodiments of the present disclosure, as shown in the drawings, Figure 2 The sleeve 100 can not be limited to including the first accommodating cavity 101 and the second accommodating cavity 102, and can also be provided with other accommodating cavities. For example, the other accommodating cavities can be used to accommodate components such as endoscopes (probes, cameras), snare devices, etc.

[0032] For example, the snare device is used to remove the polyp, for example, after the ligation rope 310 of the ligation device 300 is used to ligate the polyp, high-frequency current is used by the snare device to cut the polyp tissue.

[0033] In embodiments of the present disclosure, the structure of the control end 400 is not limited as long as it can perform operations such as inflating and deflating on the first pipe 220. For example, the control end 400 can include a gas cavity and a piston, the gas cavity being in communication with the first pipe 220, and the piston being pushed to control the air pressure of the first pipe 220.

[0034] In at least one embodiment of the present disclosure, as shown in Figure 4 , the second side wall of the first pipe 220 is provided with a pleated structure 221. In this way, the contraction capability of the second side wall of the first pipe 220 can be improved to increase the bending amplitude of the first pipe 220.

[0035] For example, as shown in Figure 4 , after the gas is extracted from the first pipe 220 to present a negative pressure, the pleated structure 221 contracts, so that the first pipe 220 and the support rod 230 are bent upward.

[0036] In at least one embodiment of the present disclosure, the ligation rope 310 includes an insulating material. In this way, in the subsequent operation of removing the polyp, the high-frequency current of the snare can be prevented from entering the ligation rope 310, so that the ligation rope 310 is electrified to burn and remove the root of the polyp, so that the ligation rope 310 loses the function of binding the blood vessels where the polyp is located.

[0037] In at least one embodiment of the present disclosure, the ligation rope 310 is a nylon rope.

[0038] In embodiments of the present disclosure, the operation process of the ligation assembly can be as shown in Figures 5A to 5C . For example, as shown in Figure 5A , after the target polyp 10 to be removed is found, the snare 300 can be driven to make the ligation rope 310 wrap around the periphery of the polyp 10; then, as shown in Figure 5B , the suction device 200 is driven to make the suction disc 210 contact and adhere to the polyp 10; then, as shown in Figure 5C , the air pressure in the first pipe 220 is extracted to make the suction disc 210 adsorb the polyp 10 while making the first pipe 220 arch upward, so that the polyp 10 is pulled up under the driving of the suction disc 210. After the above process is implemented, the snare 300 can be continuously operated to make the ligation rope 310 tighten to realize the ligation of the root of the polyp 10.

[0039] In at least one embodiment of the present disclosure, as shown in Figure 3 and Figure 6As shown, the suction device 200 can further include a propelling chamber 240, a baffle 250 and a third conduit 260. The propelling chamber 240 is located in the first accommodating cavity 101 and includes a propelling cavity. The baffle 250 is located in the propelling chamber 240 and divides the propelling cavity into a first sub-propelling cavity 241 and a second sub-propelling cavity 242, the first sub-propelling cavity 241 is located at a side of the second sub-propelling cavity 242 facing the suction disc 210, the first conduit 220 penetrates the propelling cavity and the baffle 250, the baffle 250 is in sliding connection with the propelling chamber 240, the first conduit 220 is in fixed connection with the baffle 250, and an end of the propelling chamber 240 facing the suction disc 210 is in sliding connection with the first conduit 220. The third conduit 260 is located in the first accommodating cavity 101, one end of the third conduit 260 is in communication with the second sub-propelling cavity 242, and the other end is in connection with a control end 400 configured to input or extract gas into the third conduit 260. In this way, by controlling the input or extraction of gas into the third conduit 260 through the control end 400, the pressure difference between the first sub-propelling cavity 241 and the second sub-propelling cavity 242 can be controlled, so that the baffle 250 can be moved to make the suction disc 210 retract or extend relative to the entire sleeve 100. In this way, in the case of not encountering a prolapsed polyp, the suction device 200 can be retracted into the sleeve 100 to avoid interference with the operation of other devices such as the ligator 300. Correspondingly, in the case of encountering a prolapsed polyp, the suction disc 210 of the suction device 200 can be extended out of the sleeve 100 for polyp suction operation.

[0040] In at least one embodiment of the present disclosure, as shown in Figure 6 The part of the support rod 230 away from the suction disc 210 extends to the propelling chamber 240 to be in fixed connection with the baffle 250. In this way, the force generated when the baffle 250 moves can be fully applied to the first conduit 220 to drive the movement of the suction disc 210.

[0041] In at least one embodiment of the present disclosure, as shown in Figure 6 The part of the first conduit 220 located in the second sub-propelling cavity 242 is a wave tube. In this way, the stretching ability of the part of the first conduit 220 located in the second sub-propelling cavity 242 can be increased to facilitate the movement of the baffle 250.

[0042] In at least one embodiment of the present disclosure, as shown in Figure 6 An end of the propelling chamber 240 away from the suction disc 210 is in fixed connection with the first conduit 220.

[0043] In at least one embodiment of the present disclosure, as shown in Figure 6As shown, the portion of the first conduit 220 located in the first sub-propelling chamber 241 has an opening to enable the first conduit 220 to communicate with the first sub-propelling chamber 241. Thus, when the first conduit 220 is used to draw gas while the second sub-propelling chamber 242 is filled with gas through the third conduit 260 to increase the air pressure, the gas in the second sub-propelling chamber 242 is also drawn, thereby reducing the air pressure in the second sub-propelling chamber 242. Thus, the air pressure difference between the first sub-propelling chamber 241 and the second sub-propelling chamber 242 can be increased to facilitate the movement of the baffle 250.

[0044] The present disclosure also provides a gastrointestinal endoscope device comprising the ligation assembly of any of the above embodiments. For example, the gastrointestinal endoscope device can further comprise the snare mentioned above. For example, the gastrointestinal endoscope device can further comprise a functional component such as an endoscope (probe, camera) and the like.

[0045] The above only shows the preferred embodiments of the present disclosure and is not intended to limit the present disclosure. Any modification, equivalent replacement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A bleeding prevention ligation assembly for polyp removal surgery, characterized in that, The ligation assembly comprises: a sleeve including a first accommodating cavity and a second accommodating cavity; a suction device including a suction disc, a first pipe and a supporting rod, wherein the suction disc is in communication with the first pipe, and at least a part of the first pipe is located in the first accommodating cavity; a ligation device including a ligation joint and a second pipe, wherein the ligation joint is connected with the second pipe, at least a part of the second pipe is located in the second accommodating cavity, the ligation joint includes a loop-shaped ligation rope, and the ligation rope is a flexible rope; and a control end connected with an end of the first pipe away from the suction disc and an end of the second pipe away from the ligation joint, wherein the control end is configured to extract gas from the first pipe; wherein the first pipe includes a first side wall facing the ligation device and a second side wall away from the ligation device, the supporting rod is connected with the first side wall, the supporting rod is a resilient structure, and a section of the first pipe connected with the supporting rod is a flexible pipe, so that, after negative pressure is generated in the first pipe, the second side wall of the first pipe is contracted, the supporting rod and the first pipe are bent towards the side where the second side wall is located, and the suction disc is away from the ligation rope.

2. The ligating banding assembly of claim 1, wherein, The second side wall of the first pipe is provided with a pleated structure.

3. The ligating banding assembly of claim 1, wherein, The ligation rope includes an insulating material.

4. The ligating banding assembly of claim 3, wherein, The ligation rope is a nylon rope.

5. The ligating banding assembly of any one of claims 1 to 4, wherein, The suction device further comprises: a propulsion chamber located in the first accommodating cavity and including a propulsion cavity; a baffle located in the propulsion chamber and dividing the propulsion cavity into a first sub-propulsion cavity and a second sub-propulsion cavity, wherein the first sub-propulsion cavity is located on a side of the second sub-propulsion cavity facing the suction disc, the first pipe penetrates through the propulsion cavity and the baffle, the baffle is in sliding connection with the propulsion chamber, the first pipe is in fixed connection with the baffle, and an end of the propulsion chamber facing the suction disc is in sliding connection with the first pipe; and a third pipe located in the first accommodating cavity, wherein one end of the third pipe is in communication with the second sub-propulsion cavity, and the other end is connected with the control end, and the control end is configured to input or extract gas into or from the third pipe.

6. The ligating banding assembly of claim 5, wherein, A part of the supporting rod away from the suction disc extends to the propulsion chamber to be in fixed connection with the baffle.

7. The ligating bandolier of claim 5 wherein, A part of the first pipe located in the second sub-propulsion cavity is a wave pipe.

8. The ligating banding assembly of claim 7, wherein, An end of the propulsion chamber away from the suction disc is in fixed connection with the first pipe.

9. The ligating banding assembly of claim 5, wherein, A part of the first pipe located in the first sub-propulsion cavity has an opening to make the first pipe in communication with the first sub-propulsion cavity.

10. A gastrointestinal scope apparatus, characterized by, The ligation assembly comprises any one of claims 1 to 9.

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