Pressurized ligation assembly and gastrointestinal endoscope equipment

Abstract

The utility model provides a pressurizing type loop ligature assembly and gastrointestinal endoscope equipment. 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 first pipeline comprises a first sub-pipeline and a second sub-pipeline which are connected together in parallel, the suction cup communicates with the first sub-pipeline, and the supporting rod is located on the side, away from the second sub-pipeline, of the first sub-pipeline and connected with the first sub-pipeline. 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, at least part of the second pipeline is located in the second containing cavity, 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 sub-pipeline and inflate gas into the second sub-pipeline. The supporting rod 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] This disclosure relates to the field of medical devices, and more specifically, to a pressure-type ligation assembly and a gastrointestinal endoscopy device. Background Technology

[0002] A polyp is an abnormal growth of tissue protruding from the surface of a mucosa. Before its pathological nature is determined, it is generally referred to as a polyp. Typically, polyps are formed by the growth and aggregation of cells originating from the mucosa. Polyps are a common clinical condition; the vast majority are benign and do not endanger life. However, some polyps have a tendency to become cancerous and require timely removal.

[0003] Currently, high-frequency electrocoagulation is the most widely used method for polyp removal. In the removal of pedunculated or narrow-pedunculated polyps, the thermal effect of high-frequency current is used to coagulate and necrotize the tissue, thus removing the polyp. However, during the heating and coagulation process, the polyp is often soft and prone to collapsing, making it difficult to grasp the stalk. This results in the polyp coming into close contact with the electrical wire, damaging the polyp structure, especially for smaller polyps. Furthermore, some polyps grow near blood vessels, and direct removal may cause bleeding. Therefore, polyps need to be ligated before removal. However, when the polyp is collapsed, the ligation rope is difficult to loop around, making it difficult to reduce the difficulty and risk of polyp removal surgery in such cases. Summary of the Invention

[0004] This disclosure provides a pressurized bandaging assembly, comprising a cannula, a suction device, a bandaging device, and a control end. The cannula includes a first receiving cavity and a second receiving cavity. The suction device includes a suction cup, a first conduit, and a support rod. The first conduit includes a first sub-conduit and a second sub-conduit connected together. The suction cup communicates with the first sub-conduit. The support rod is located on the side of the first sub-conduit away from the second sub-conduit and is connected to the first sub-conduit. At least a portion of the first conduit is located in the first receiving cavity. The bandaging device includes a bandaging connector and a second conduit. The bandaging connector is connected to the second conduit, at least a portion of the second conduit is located in the second receiving cavity. The bandaging connector includes an annular bandaging cord, which is a flexible cord. The control end is connected to the end of the first conduit away from the suction cup and to the end of the second conduit away from the bandaging connector. The control end is configured to draw gas from the first sub-conduit and pressurize the second sub-conduit with gas. The support rod is an elastic structure, and the section of the first pipe connected to the support rod is a flexible pipe. When the first sub-pipe is under negative pressure and the second sub-pipe is under high pressure, the support rod and the first pipe bend away from the ligator, and the suction cup moves away from the ligating rope.

[0005] In the above procedure, upon encountering a collapsed polyp, the ligating cord of the ligator can be first placed around the polyp. Then, the suction cup of the suction device is placed against the polyp. Next, gas is extracted from the first sub-channel via the control end to ensure the suction cup adheres to the polyp. Gas is then introduced into the second sub-channel to cause it to expand. As the first sub-channel contracts, the second sub-channel expands, and the support rod provides support, the first channel bends towards the support rod, causing the suction cup to extend away from the ligating cord, thus lifting the polyp. The ligator can then be operated to secure the base of the polyp with the ligating cord, preventing bleeding at the polyp site during subsequent polyp removal.

[0006] In one specific embodiment of the first aspect of this disclosure, in the section of the first conduit connected to the support rod, at least a portion of the surface of the second sub-conduit away from the first sub-conduit is configured with a corrugated structure. This improves the expansion capacity of the second sub-conduit, thereby increasing the bending radius of the first conduit.

[0007] In one specific embodiment of the first aspect of this disclosure, the ligating cord includes an insulating material. This prevents the ligating cord from losing its binding function due to energization during subsequent polyp removal.

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

[0009] In one specific embodiment of the first aspect of this disclosure, the suction device may further include a propulsion chamber, a baffle, and a third conduit. The propulsion chamber is located in a first receiving cavity and includes 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 suction cup-facing side of the second sub-propulsion cavity. The first conduit passes through the propulsion cavity and the baffle. The baffle is slidably connected to the propulsion chamber, and the first conduit is fixedly connected to the baffle. One end of the propulsion chamber facing the suction cup is slidably connected to the first conduit. The third conduit is located in the first receiving cavity. One end of the third conduit communicates with the first sub-propulsion cavity, and the other end is connected to a control terminal. The control terminal is configured to input or extract gas into the third conduit.

[0010] In the above scheme, by inputting or extracting gas into the third pipe through the control terminal, the pressure difference between the first sub-propulsion chamber and the second sub-propulsion chamber can be controlled, thereby moving the baffle so that the suction cup can retract or extend relative to the entire sleeve. In this way, when no collapsed polyp is encountered, the suction device can be retracted into the sleeve to avoid interfering with the operation of other devices such as the ligator. Correspondingly, when a collapsed polyp is encountered, the suction cup of the suction device can be extended out of the sleeve to perform the operation of adsorbing the polyp.

[0011] In one specific embodiment of the first aspect of this disclosure, the portion of the support rod away from the suction cup extends into the propulsion chamber for fixed connection with a baffle. Thus, the force generated when the baffle moves can be applied entirely to the first conduit to drive the movement of the suction cup.

[0012] In one specific embodiment of the first aspect of this disclosure, a first sub-pipe and a second sub-pipe are connected in a first sub-propulsion chamber and spaced apart in a second sub-propulsion chamber, and the portions of the first and second sub-pipes located in the second sub-propulsion chamber are configured as corrugated pipes. This increases the tensile strength of the portion of the first pipe located in the second sub-propulsion chamber, facilitating the movement of the baffle.

[0013] In one specific embodiment of the first aspect of this disclosure, the end of the propulsion chamber furthest from the suction cup is fixedly connected to the first pipe.

[0014] In one specific embodiment of the first aspect of this disclosure, the portion of the second sub-pipe located in the second sub-propulsion chamber has an opening, thereby enabling communication between the second sub-pipe and the second sub-propulsion chamber. Thus, when gas is introduced into the second sub-pipe to increase the pressure, the gas introduced into the second sub-pipe simultaneously enters the second sub-propulsion chamber, thereby increasing the pressure in the second sub-propulsion chamber. This increases the pressure difference between the first and second sub-propulsion chambers, facilitating the movement of the baffle.

[0015] The second aspect of this disclosure provides a gastrointestinal endoscopy device, which includes the ligation component described in the first aspect above. Attached Figure Description

[0016] Figure 1 The diagram shown is a structural schematic of a ligation assembly provided in an embodiment of this disclosure.

[0017] Figure 2 for Figure 1 The diagram shows a cross-sectional view of a portion of the ligation assembly.

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

[0019] Figure 4 for Figure 1 A schematic diagram of a portion of the suction device in the ligation assembly is shown.

[0020] Figures 5A to 5C For example Figure 1 The diagram shows the operating principle of the ligation assembly for ligating polyps.

[0021] Figure 6 This disclosure provides a schematic diagram of the structure of a portion of a ligation assembly according to an embodiment.

[0022] Explanation of reference numerals in the attached figures

[0023] 10-Polyps;

[0024] 100 - Sleeve; 101 - First receiving cavity; 102 - Second receiving cavity;

[0025] 200 - Suction device; 210 - Suction cup; 220 - First pipe; 220a - First sub-pipe; 220b - Second sub-pipe; 230 - Support rod; 240 - Propulsion chamber; 241 - First sub-propulsion cavity; 242 - Second sub-propulsion cavity; 250 - Baffle; 260 - Third pipe;

[0026] 300 - Strapping device; 310 - Strapping rope; 320 - Second pipe;

[0027] 400 - Control Terminal. Detailed Implementation

[0028] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0029] During endoscopic polyp removal, in sensitive areas (such as near blood vessels), the polyp is ligated (using a ligator described below) to prevent bleeding after removal. Due to the need for tight ligation, the ligating cord (such as the ligating cord described below) must be flexible. However, when encountering a prolapsed polyp, a flexible ligating cord cannot apply force, making it difficult to secure it to the base of the polyp and thus hindering successful ligation.

[0030] Embodiments of this disclosure provide a pressure-filled ligation assembly and a gastrointestinal endoscopy device to at least solve the aforementioned technical problems. For example... Figures 1 to 3As shown, the ligation assembly may include a cannula 100, a suction device 200, a ligator 300, and a control end 400. The cannula 100 includes a first receiving cavity 101 and a second receiving cavity 102. The suction device 200 includes a suction cup 210, a first conduit 220, and a support rod 230. The suction cup 210 is connected to the first conduit 220. The first conduit 220 includes a first sub-conduit 220a and a second sub-conduit 220b connected together. The suction cup 210 is connected to the first sub-conduit 220a. The support rod 230 is located on the side of the first sub-conduit 220a away from the second sub-conduit 220b and is connected to the first sub-conduit 220a. At least a portion of the first conduit 220 is located in the first receiving cavity 101. The banding device 300 includes a banding connector and a second conduit 320, the banding connector being connected to the second conduit 320. At least a portion of the second conduit 320 is located in the first receiving cavity 102. The banding connector includes an annular banding rope 310, which is a flexible rope. A control end 400 is connected to the end of the first conduit 220 away from the suction cup 210 and to the end of the second conduit 320 away from the banding connector. The control end 400 is configured to extract gas from the first sub-conduit 220a and fill gas into the second sub-conduit 220b. The support rod 230 is an elastic structure, and the section of the first conduit 220 connected to the support rod 230 is a flexible conduit. When there is negative pressure in the first sub-conduit 220a and high pressure in the second sub-conduit 220b, the support rod 230 and the first conduit 220 bend away from the banding device 300, causing the suction cup 210 to move away from the banding rope 310. In this ligation assembly, upon encountering a prolapsed polyp, the ligation cord 310 of the ligator 300 is first placed around the polyp. Then, the suction cup 210 of the suction device 200 is attached to the polyp. Next, gas is extracted from the first sub-channel 220a through the control end 400 to make the suction cup 210 attach to the polyp. Then, gas is injected into the second sub-channel 220b through the control end 400 to expand the second sub-channel 220b. Under the contraction of the first sub-channel 220a, the expansion of the second sub-channel 220b, and the support of the support rod 230, the first channel 220 bends towards the side where the support rod 230 is located, thereby causing the suction cup 210 to extend away from the ligation cord 310, thus making the polyp stand up. Afterward, the ligator 300 can be operated to make the ligation cord 310 complete the binding of the polyp root, thereby avoiding bleeding problems at the polyp location during subsequent polyp removal operations.

[0031] It should be noted that under standard atmospheric pressure, negative pressure has a limit (the limit is vacuum, where the rate of pressure change is one atmosphere), while high pressure has no limit. Therefore, in actual operation, as long as the rate of pressure change in the second sub-pipe 220b is greater than the rate of pressure change in the first sub-pipe 220a, the expansion of the second sub-pipe 220b can offset the effect of the contraction of the first sub-pipe 220a, and cause the first pipe 220 to bend towards the side where the support rod 230 is located. The rate of pressure change in the first sub-pipe 220a is: the difference between the standard atmospheric pressure and the standard atmospheric pressure; the rate of pressure change in the second sub-pipe 220b is: the difference between the second sub-pipe 220b and the standard atmospheric pressure.

[0032] In embodiments of this disclosure, such as Figure 2 As shown, the cannula 100 may not be limited to including the first receiving cavity 101 and the second receiving cavity 102; it may also be provided with other receiving cavities. For example, these other receiving cavities may be used to accommodate components such as endoscopes (probes, cameras), snares, etc.

[0033] For example, a snare is used to remove polyps, such as after the polyp is ligated using the ligation cord 310 of the ligator 300, the polyp tissue is cut using a high-frequency current through the snare.

[0034] In the embodiments of this disclosure, the structure of the control terminal 400 is not limited, as long as it can perform operations such as inflation and deflation on the first pipe 220. For example, the control terminal 400 may include an air chamber and a piston, the air chamber being connected to the first pipe 220, and the air pressure in the first pipe 220 being controlled by pushing the piston.

[0035] In at least one embodiment of this disclosure, such as Figure 4 As shown, in the section of the first pipe 220 connected to the support rod 230, at least a portion of the surface of the second sub-pipe 220b away from the first sub-pipe 220a is configured with a pleated structure 221. This improves the expansion capacity of the second sub-pipe 220b, thereby increasing the bending radius of the first pipe 220.

[0036] For example, such as Figure 4 As shown, after gas is introduced into the second sub-pipe 220b to create a positive pressure (high pressure), the pleated structure 221 expands, causing the first pipe 220 and the support rod 230 to bend upwards.

[0037] In at least one embodiment of this disclosure, the ligating cord 310 includes an insulating material. Thus, during subsequent polyp removal, the high-frequency current of the snare can be prevented from entering the ligating cord 310, which would cause the ligating cord 310 to be energized and burn the base of the polyp, thereby causing the ligating cord 310 to lose its binding function on the blood vessels at the location of the polyp.

[0038] In at least one embodiment of this disclosure, the tying rope 310 is a nylon rope.

[0039] In embodiments of this disclosure, the operation of the ligation assembly can be as follows: Figures 5A to 5C As shown. For example, as Figure 5A As shown, after the target polyp 10 to be removed is located, the ligator 300 can be activated so that the ligation cord 310 is fitted around the periphery of the polyp 10; then, as... Figure 5B As shown, the suction device 200 is driven so that the suction cup 210 contacts and adheres to the polyp 10; then, as Figure 5C As shown, air pressure is extracted from the first sub-channel and injected into the second sub-channel, causing the suction cup 210 to adhere to the polyp 10 while simultaneously tilting the first channel 220 upwards. This, in turn, pulls the polyp 10 up under the influence of the suction cup 210. After completing the above process, the ligator 300 can be operated to tighten the ligation rope 310, thereby ligating the root of the polyp 10.

[0040] In at least one embodiment of this disclosure, such as Figure 3 and Figure 6As shown, the suction device 200 may further include a propulsion chamber 240, a baffle 250, and a third conduit 260. The propulsion chamber 240 is located in the first receiving cavity 101 and includes a propulsion cavity. The baffle 250 is located in the propulsion chamber 240 and divides the propulsion cavity into a first sub-propulsion cavity 241 and a second sub-propulsion cavity 242. The first sub-propulsion cavity 241 is located on the side of the second sub-propulsion cavity 242 facing the suction cup 210. The first conduit 220 passes through the propulsion cavity and the baffle 250. The baffle 250 is slidably connected to the propulsion chamber 240, and the first conduit 220 is fixedly connected to the baffle 250. One end of the propulsion chamber 240 facing the suction cup 210 is slidably connected to the first conduit 220. The third conduit 260 is located in the first receiving cavity 101. One end of the third conduit 260 communicates with the first sub-propulsion cavity 241, and the other end is connected to a control terminal 400. The control terminal 400 is configured to input or extract gas into the third conduit 260. Thus, by inputting or extracting gas into the third pipe 260 through the control terminal 400, the pressure difference between the first sub-propulsion chamber 241 and the second sub-propulsion chamber 242 can be controlled, thereby moving the baffle 250 so that the suction cup 210 can be retracted or extended relative to the entire sleeve 100. In this way, when no prolapsed polyp is encountered, the suction device 200 can be retracted into the sleeve 100 to avoid interfering with the operation of other devices such as the ligator 300. Correspondingly, when a prolapsed polyp is encountered, the suction cup 210 of the suction device 200 can be extended out of the sleeve 100 to perform the operation of adsorbing the polyp.

[0041] In at least one embodiment of this disclosure, such as Figure 6 As shown, the portion of the support rod 230 away from the suction cup 210 extends into the propulsion chamber 240 to be fixedly connected to 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 cup 210.

[0042] In at least one embodiment of this disclosure, such as Figure 6 As shown, the first sub-pipe 220a and the second sub-pipe 220b are connected in the first sub-propulsion chamber 241 and spaced apart in the second sub-propulsion chamber 242. The portions of the first sub-pipe 220a and the second sub-pipe 220b located in the second sub-propulsion chamber 242 are configured as corrugated pipes. In this way, the tensile strength of the portion of the first pipe 220 located in the second sub-propulsion chamber 242 can be increased to facilitate the movement of the baffle 250.

[0043] In at least one embodiment of this disclosure, such as Figure 6 As shown, the end of the propulsion chamber 240 away from the suction cup 210 is fixedly connected to the first pipe 220.

[0044] In at least one embodiment of this disclosure, such as Figure 6As shown, the portion of the second sub-pipe 220b located in the second sub-propulsion chamber 242 has an opening 221, allowing the second sub-pipe 220b to communicate with the second sub-propulsion chamber 242. Thus, while gas is being introduced into the second sub-pipe 220b to increase the pressure, the gas introduced into the second sub-pipe 220b simultaneously enters the second sub-propulsion chamber 242, thereby increasing the pressure in the second sub-propulsion chamber 242. This increases the pressure difference between the first sub-propulsion chamber 241 and the second sub-propulsion chamber 242, facilitating the movement of the baffle 250.

[0045] At least one embodiment of this disclosure also provides a gastrointestinal endoscopy device, which includes the ligation component of any of the above embodiments. For example, the gastrointestinal endoscopy device may also include the aforementioned snare. For example, the gastrointestinal endoscopy device may also include functional components such as an endoscope (probe, camera).

[0046] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Any modifications or equivalent substitutions made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A bleeding-prevention pressure-type ligation assembly for polyp removal surgery, characterized in that, include: The sleeve includes a first receiving cavity and a second receiving cavity; A suction device includes a suction cup, a first channel, and a support rod, wherein the first channel includes a first sub-channel and a second sub-channel connected together, the suction cup is in communication with the first sub-channel, the support rod is located on the side of the first sub-channel away from the second sub-channel and is connected to the first sub-channel, and at least a portion of the first channel is located in the first receiving cavity. A ligating device includes a ligating connector and a second conduit, wherein the ligating connector is connected to the second conduit, at least a portion of the second conduit is located in a second receiving cavity, and the ligating connector includes an annular ligating cord, the ligating cord being a flexible cord; and A control terminal is connected to the end of the first pipe away from the suction cup and to the end of the second pipe away from the ferrule, wherein the control terminal is configured to extract gas from the first sub-pipe and fill gas into the second sub-pipe. The support rod is an elastic structure, and the section of the first pipe connected to the support rod is a flexible pipe. When the first sub-pipe is under negative pressure and the second sub-pipe is under high pressure, the support rod and the first pipe bend away from the ligator, and the suction cup moves away from the ligating rope.

2. The ligation assembly according to claim 1, characterized in that, In the section of the first pipe connected to the support rod, at least a portion of the surface of the second sub-pipe away from the first sub-pipe is configured to have a pleated structure.

3. The ligation assembly according to claim 1, characterized in that, The binding rope includes insulating material.

4. The ligation assembly according to claim 3, characterized in that, The binding rope is a nylon rope.

5. The ligation assembly according to any one of claims 1 to 4, characterized in that, The suction device also includes: The propulsion chamber is located within the first receiving cavity and includes the propulsion chamber; A baffle, located within the propulsion chamber, divides the propulsion chamber into a first sub-propulsion chamber and a second sub-propulsion chamber. The first sub-propulsion chamber is located on the side of the second sub-propulsion chamber facing the suction cup. A first conduit passes through the propulsion chamber and the baffle. The baffle is slidably connected to the propulsion chamber, and the first conduit is fixedly connected to the baffle. The end of the propulsion chamber facing the suction cup is slidably connected to the first conduit. A third conduit is located in the first receiving cavity, wherein one end of the third conduit is connected to the first sub-propulsion cavity, and the other end is connected to the control terminal, which is configured to input or extract gas into the third conduit.

6. The ligation assembly according to claim 5, characterized in that, The portion of the support rod away from the suction cup extends into the propulsion chamber to be fixedly connected to the baffle.

7. The ligation assembly according to claim 5, characterized in that, The first sub-pipe and the second sub-pipe are connected in the first sub-propulsion chamber and spaced apart in the second sub-propulsion chamber, and the portions of the first sub-pipe and the second sub-pipe located in the second sub-propulsion chamber are configured as wave tubes.

8. The ligation assembly according to claim 7, characterized in that, The end of the propulsion chamber furthest from the suction cup is fixedly connected to the first pipe.

9. The ligation assembly according to claim 5, characterized in that, The portion of the second sub-pipe located in the second sub-propulsion chamber has an opening, thereby enabling the second sub-pipe to communicate with the second sub-propulsion chamber.

10. A gastrointestinal endoscopy device, characterized in that, The ligation assembly includes any one of claims 1 to 9.

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