Anorectal ligation device and use method thereof

Abstract

The invention discloses an anorectal ligation device, comprising a main unit, wherein a main unit control panel, a negative pressure pump and a radio frequency receiving module are arranged inside the main unit, and the negative pressure pump and the radio frequency receiving module are both electrically connected to the main unit control panel; a gun body, wherein the gun body is communicated with the negative pressure pump; a gun body control panel and a radio frequency transmitting module are arranged in the gun body, and the radio frequency transmitting module is electrically connected to the gun body control panel, and the radio frequency transmitting module is communicatively connected to the radio frequency receiving module; a gun barrel, wherein the gun barrel is detachably connected to the gun body; a ligation mechanism, wherein the ligation mechanism comprises an elastic line, an elastic line tightening device and a fuse device, wherein the elastic line tightening device is arranged on the gun body, wherein one end of the elastic line is sleeved on the end of the gun barrel in the form of a slipknot, and the other end is fixed to the elastic line tightening device, and the fuse device is arranged in the gun barrel and is suitable for cutting the elastic line; and the elastic line tightening device and the fuse device are both electrically connected to the gun body control panel.

Description

Technical Field

[0001] The invention relates to an anorectal ligation device and a use method thereof. Background Art

[0002] Anorectal ligation device is a medical device used to treat anorectal diseases such as hemorrhoids. Its working principle is to put a special rubber ring on the root of the internal hemorrhoids to block its blood supply, causing the hemorrhoids to necrotize and fall off, thereby achieving the purpose of treatment. This method has the advantages of simple operation, less bleeding, and quick recovery.

[0003] Existing anorectal ligation devices rely on manual operation by operators throughout the entire process in clinical applications, including every key step in the ligation process. For example, during hemorrhoid ligation surgery, doctors need to manually adjust the pressure of the negative pressure pump to ensure that the hemorrhoid tissue can be smoothly and safely sucked into the suction nozzle of the ligation device. During this process, doctors must accurately control the magnitude and duration of the pressure to avoid unnecessary pain or tissue damage to patients due to excessive pressure, or ligation failure due to insufficient pressure.

[0004] In addition, the operator needs to manually control the timing of releasing the ligature ring. After confirming that the hemorrhoidal tissue has been correctly sucked in and positioned, the doctor needs to quickly and accurately release the ligature ring so that it is tightly fixed at the root of the hemorrhoid, thereby cutting off the blood supply and causing the hemorrhoidal tissue to gradually shrink and fall off. This link also requires a high degree of manual dexterity and accuracy, and any slight deviation may affect the treatment effect.

[0005] Since the entire process is completely dependent on the operator's experience and feel, it places high demands on the operator's professional skills and experience. Long-term operation may cause doctor's hand fatigue, which in turn affects the stability and accuracy of the operation. At the same time, manual operation also increases the operation time and complexity, which may cause patients to endure longer surgical pain and risks. In order to improve surgical efficiency, reduce human errors, and improve patient comfort and safety. Summary of the invention

[0006] The purpose of the present invention is to provide an anorectal ligation device and a method of using the same to solve the technical problems mentioned in the above background technology.

[0007] The technical solution to achieve the purpose of the present invention is: an anorectal ligation device, comprising

[0008] A host, wherein a host control board, a negative pressure pump and a radio frequency receiving module are arranged inside the host, and the negative pressure pump and the radio frequency receiving module are both electrically connected to the host control board;

[0009] A gun body, the gun body is connected to a negative pressure pump; a gun body control board and a radio frequency transmitting module are arranged in the gun body, the radio frequency transmitting module is electrically connected to the gun body control board, and the radio frequency transmitting module is communicatively connected to the radio frequency receiving module;

[0010] A gun barrel, wherein the gun barrel is detachably connected to the gun body;

[0011] The tying mechanism comprises an elastic line, an elastic line tightening device and a fuse device, wherein the elastic line tightening device is arranged on the gun body, one end of the elastic line is sleeved on the end of the gun barrel in the form of a slipknot, and the other end is fixed to the elastic line tightening device, and the fuse device is arranged in the gun barrel and is suitable for cutting the elastic line;

[0012] The elastic line tightening device and the fuse device are both electrically connected to the gun body control panel.

[0013] Furthermore, a liquid storage bottle is arranged between the gun body and the negative pressure pump, the liquid storage bottle is arranged in the main machine, and the upper part of the liquid storage bottle is connected to the negative pressure pump and the gun body respectively through two exhaust pipes.

[0014] Furthermore, an opening is provided on the top of the liquid storage bottle, and a bottle cap is provided at the opening; the bottle cap is connected to two air suction hoses, and the air extraction pipe is connected to the air suction hoses.

[0015] Furthermore, the liquid storage bottle is detachably connected to the host.

[0016] Furthermore, the gun body is provided with a start button, which is connected to the gun body control panel when pressed, and the host is provided with a switch button and a stop button, which are suitable for switching the host on and off.

[0017] Furthermore, the elastic line tightening device includes a tightening drive device and a tightening wheel, the tightening drive device is arranged in the gun body, the tightening wheel is arranged at the output end of the tightening drive device, and the other end of the elastic line is fixed on the tightening wheel.

[0018] Furthermore, the elastic line tightening device also includes a torque sensor, which is electrically connected to the gun body control board, and the torque sensor detects the output torque of the tightening drive device.

[0019] Furthermore, the gun barrel includes a negative pressure tube, an elastic line tube and a gun head, the negative pressure tube and the elastic line tube are arranged in parallel, the gun head is connected to one end of the negative pressure tube, the gun head is "L" shaped, the elastic line passes through the elastic line tube, one end is sleeved on the end of the gun head, and the other end is fixed to the elastic line tightening device; when the elastic line tightening device tightens the elastic line, the elastic line detaches from the end of the gun head.

[0020] Furthermore, a puncture device is provided in the inner side wall of the end of the gun head.

[0021] A method for using an anorectal ligation device, comprising:

[0022] a: One end of the elastic line is connected to the end of the gun barrel in the form of a slipknot, and the other end is fixed to the elastic line tightening device. The gun barrel is fixed to the gun body, and the gun body is connected to the negative pressure pump through the air extraction pipe;

[0023] b: Press the switch button on the main unit and aim the gun tip at the tissue to be ligated;

[0024] c: Press the start button on the gun body, and the negative pressure pump starts the suction process;

[0025] d: When the pressure of the negative pressure pump reaches the set pressure value, the elastic line tightening device starts to tighten the elastic line, and the elastic line is separated from the end of the barrel;

[0026] e: When the output torque of the tightening drive device reaches the set torque value, the tightening of the elastic wire is stopped, and the elastic wire is cut off by the fuse device;

[0027] f: After the ligation is completed, press the switch button on the main unit, take out the liquid storage bottle and clean it.

[0028] By adopting the above technical solution, the present invention has the following beneficial effects:

[0029] (1) When the pressure of the negative pressure pump of the anorectal ligation device of the present invention reaches a certain value, the elastic wire tightening device will automatically tighten the elastic wire, and when the elastic wire is tightened to a set tension value, the elastic wire will be automatically cut off by the fuse device. The entire operation process is fully automatic, which improves surgical efficiency, reduces human operation errors, and enhances patient comfort and safety.

[0030] (2) The present invention is provided with a radio frequency transmitting module and a radio frequency receiving module for information communication. After the gun body sends out a command, the host can receive the command and perform subsequent operation procedures. Since liquid will enter the exhaust pipe, no cable is used for communication, which is also convenient for subsequent cleaning of the exhaust pipe.

[0031] (3) The present invention is provided with a torque sensor. When the output torque of the tightening drive device reaches the set torque value, the tightening of the elastic wire is stopped, and the elastic wire is cut off by a fuse device, thereby reducing the operating errors of the operator when tightening the elastic wire, resulting in over-tightening or over-loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0033] Figure 1 It is a schematic diagram of the structure of the present invention.

[0034] Figure 2 It is a schematic structural diagram of the gun body and the gun barrel of the present invention.

[0035] Figure 3 It is a structural schematic diagram of the gun head of the present invention.

[0036] Figure 4 It is a side structural schematic diagram of the gun barrel of the present invention.

[0037] Figure 5 It is a top view of the host of the present invention.

[0038] Figure 6 It is a schematic diagram of the internal structure of the host of the present invention.

[0039] The numbers in the accompanying drawings are: main unit 1, main unit control panel 1-1, negative pressure pump 1-2, switch button 1-3, stop button 1-4, gun body 2, gun body control panel 2-1, start button 2-2, gun barrel 3, negative pressure tube 3-1, elastic line tube 3-2, first support part 3-2-1, gun head 3-3, puncture device 3-3-1, tightening slope 3-3-2, anti-slip boss 3-3-3, elastic line passing groove 3-3-4, elastic line 4, elastic line tightening device 5, tightening drive device 5-1, tightening wheel 5-2, liquid storage bottle 6. DETAILED DESCRIPTION

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0046] (Example 1)

[0047] See Figure 1-6 The anorectal ligation device of this embodiment comprises

[0048] Host 1, wherein a host control board 1-1, a negative pressure pump 1-2 and a radio frequency receiving module are arranged inside the host 1, and the negative pressure pump 1-2 and the radio frequency receiving module are both electrically connected to the host control board 1-1;

[0049] The gun body 2 is connected to the negative pressure pump 1-2; the gun body 2 is provided with a gun body control board 2-1 and a radio frequency transmitting module, the radio frequency transmitting module is electrically connected to the gun body control board 2-1, and the radio frequency transmitting module is communicatively connected to the radio frequency receiving module;

[0050] A gun barrel 3, which is detachably connected to the gun body 2;

[0051] The tying mechanism comprises an elastic line 4, an elastic line tightening device 5 and a fuse device. The elastic line tightening device 5 is arranged on the gun body 2. One end of the elastic line 4 is set on the end of the gun barrel 3 in the form of a slipknot, and the other end is fixed to the elastic line tightening device 5. The fuse device is arranged in the gun barrel 3 and is suitable for cutting off the elastic line 4.

[0052] The elastic line tightening device 5 and the fuse device are both electrically connected to the gun body control board 2-1.

[0053] Specifically, the main machine 1 includes a casing and a negative pressure pump 1-2, a liquid storage bottle 6, a main machine control board 1-1 and a radio frequency receiving module arranged inside the casing. The negative pressure pump 1-2 and the radio frequency receiving module are electrically connected to the main machine control board 1-1. An air intake port is provided on the side wall of the casing. Two air intake hoses are connected to the liquid storage bottle 6, one of which is connected to the negative pressure pump 1-2, and the other is connected to the air intake port. The air intake port is connected to the gun body 2 at the rear end through a negative pressure tube 3-1.

[0054] A liquid storage chamber is provided in the housing, a liquid storage bottle 6 is provided in the liquid storage chamber, and a through hole for the suction hose to pass through is provided on the side wall of the liquid storage chamber. A cover plate is provided on the top of the liquid storage chamber, one end of the cover plate is hinged to the housing, and the other end is clamped to the housing, and the cover plate is rotated to open and close the liquid storage chamber, and the liquid storage bottle 6 is detachably provided in the liquid storage chamber, and the liquid storage bottle 6 can be taken out and cleaned after the cover plate is opened.

[0055] An opening is provided above the liquid storage bottle 6, and a bottle cap is provided at the opening; two air suction hoses are connected to the bottle cap. As a preferred solution of this embodiment, a sealing ring is provided between the bottle cap and the liquid storage bottle 6. The two air suction hoses pass through the bottle cap with the same length and only pass through a very short part to prevent the liquid in the liquid storage bottle from being sucked back into the negative pressure pump.

[0056] The bottom of both sides of the casing is provided with a hand-held part which is concave inwards, so as to facilitate the mobile carrying. A heat dissipation grille is provided on the hand-held part, which is beneficial to the heat dissipation of the negative pressure pump 1-2.

[0057] A power interface is provided on the side wall of the housing, and a switch button and a stop button are provided on the housing. The switch button and the stop button are electrically connected to the control main board. During surgery, the host is powered on and the switch button is pressed to turn on the power input. The stop button is pressed and the entire negative pressure pump is in standby mode. After the surgery is completed, the switch button is pressed again to turn off the power input. A status indicator light and a pressure gauge are provided on the housing. The status indicator light and the pressure gauge are electrically connected to the host control board 1-1, which can accurately indicate the current status and simplify the operator's work.

[0058] The elastic line tightening device 5 comprises a tightening drive device 5-1 and a tightening wheel 5-2. The tightening drive device 5-1 is arranged in the gun body 2, the tightening wheel 5-2 is arranged at the output end of the tightening drive device 5-1, and the other end of the elastic line 4 is fixed on the tightening wheel 5-2.

[0059] The elastic line tightening device 5 also includes a torque sensor, which is electrically connected to the gun body control board 2-1. The torque sensor detects the output torque of the tightening drive device 5-1.

[0060] The gun barrel 3 includes a negative pressure tube 3-1, a half-tube shell and a gun head 3-3. One end of the gun head 3 is connected to the negative pressure tube 3-1. The negative pressure tube 3-1 is hollow inside to form a negative pressure channel. The elastic wire 4 is arranged outside the negative pressure tube 3-1 along the length direction of the negative pressure tube 3-1. The half-tube shell and the negative pressure tube 3-1 are arranged in parallel. The half-tube shell and the side wall of the negative pressure tube jointly form an elastic wire tube 3-2. After passing through the elastic wire tube 3-2, one end of the elastic wire 4 is sleeved on the other end of the gun head 3-3. The other end of the elastic wire 4 is fixed to the elastic wire tightening device 5 on the subsequent gun body 2. The gun head 3-3 is provided with a puncture device 3-3-1.

[0061] The gun head 3-3 is "L"-shaped, and the puncture device 3-3-1 is a puncture cone arranged on the inner wall of the gun head. The tip of the puncture cone faces the opening at the end of the gun head 3-3. Compared with a straight gun head, the puncture cone is easier to set. Secondly, the shape of the gun head 3-3 is more convenient. When the elastic line 4 is tightened, the elastic line 4 falls off from the gun head 3-3 and is ligated on the diseased tissue.

[0062] In this embodiment, the length from the tip of the puncture cone to the end of the gun head 3-3 is greater than the radius of the end of the gun head 3-3, which prevents smaller diseased tissues from being adsorbed in the gun head and then punctured by the puncture cone.

[0063] The half-tube housing is detachably connected to the negative pressure tube 3-1, so that the elastic wire 4 can be easily replaced. A fuse device is provided in the elastic wire tube 3-2, so that the elastic wire 4 can be easily cut off.

[0064] Two slots along the length of the negative pressure tube 3-1 are provided on the outer wall of the negative pressure tube 3-1, and the two sides of the half-tube shell are respectively inserted into the two slots; a fixing portion is provided at one end of the half-tube shell, and a through hole for the negative pressure tube 3-1 to pass through is provided on the fixing portion. By passing one end of the negative pressure tube 3-1 through the through hole on the fixing portion, and the two sides of the half-tube shell are respectively inserted into the slots, the gun barrel 3 can be assembled conveniently. A guide groove is provided on the fixing portion to facilitate the subsequent installation of the gun barrel on the gun body. A stopper is provided on one side of the negative pressure tube, and the stopper cooperates with the fixing portion. When the installation is completed, the stopper abuts against the fixing portion.

[0065] The elastic wire tube 3-2 is provided with a first support portion 3-2-1 extending axially along the gun head 3-3, and the first support portion supports the elastic wire 4. One end of the elastic wire 4 is sleeved on the gun head 3-3, and the other end passes through the elastic wire tube 3-2 after passing through the first support portion 3-2-1, and is finally fixed on the tightening wheel 5-2. A tightening slope 3-3-2 is provided at the end of the gun head 3-3, and the tightening slope 3-3-2 is provided on the side of the gun head 3-3 away from the first support portion 3-2-1. The tightening slope 3-3-2 makes it easier for the elastic wire 4 to slide down along the tightening slope 3-3-2 after moving from the main part of the gun head 3-3 to the tightening slope 3-3-2. An anti-slip boss 3-3-3 is provided on the tightening slope 3-3-2 to prevent the elastic line 4 from being detached from the tightening slope 3-3-2 before it is initially placed in place and before it is tightened. After the anti-slip boss 3-3-3 is provided, the elastic line tightening device 5 needs to apply a certain force to make the elastic line 4 detach from the gun head 3-3.

[0066] An elastic line groove 3-3-4 is provided on one side of the gun head 3-3 close to the first support portion 3-2-1, and the bottom surface of the elastic line groove 3-3-4 matches the bottom of the tightening slope 3-3-2. When the elastic line 4 is initially put on the gun head, the elastic line 4 will not move too far away from the tightening slope 3-3-2, which is convenient for subsequent operations.

[0067] The length of the first support portion 3-2-1 extending axially along the gun head 3-3 is greater than the length from the bottom of the tightening slope 3-3-2 to the elastic line tube 3-2, and is less than the length from the end of the gun head 3-3 to the elastic line tube 3-2. During the tightening process of the elastic line 4, the elastic line 4 sleeved on the gun head 3-3 is subjected to partial force along the axial direction of the gun head 3-3, which facilitates the elastic line 4 to detach from the gun head 3-3.

[0068] A second supporting portion is also provided on one side of the gun head 3-3 close to the first supporting portion 3-2-1, and the second supporting portion is used to support the first supporting portion 3-2-1, so that the structure is more stable.

[0069] (Example 2)

[0070] A method for using an anorectal ligation device, comprising:

[0071] a: One end of the elastic line 4 is sleeved on the end of the gun barrel 3 in the form of a slipknot, and the other end is fixed on the elastic line tightening device 5, and the gun barrel 3 is fixed on the gun body 2, and the gun body 2 is connected to the negative pressure pump 1-2 through the exhaust pipe;

[0072] b: Press the switch button 1-3 on the main unit 1 and aim the gun tip 3-3 at the tissue to be ligated;

[0073] c: Press the start button 2-2 on the gun body 2, and the negative pressure pump 1-2 starts the suction process;

[0074] d: When the pressure of the negative pressure pump 1-2 reaches the set pressure value, the elastic line tightening device 5 starts to tighten the elastic line 4, and the elastic line 4 is separated from the end of the barrel 3;

[0075] e: When the output torque of the tightening driving device 5-1 reaches the set torque value, the tightening of the elastic wire 4 is stopped, and the elastic wire 4 is cut off by the fuse device;

[0076] f: After the ligation is completed, press the switch button 1-3 on the main unit 1, take out the liquid storage bottle 6 and clean it.

[0077] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anorectal ligation device, characterized in that: include A host (1), wherein a host control board (1-1), a negative pressure pump (1-2) and a radio frequency receiving module are arranged inside the host, and the negative pressure pump (1-2) and the radio frequency receiving module are both electrically connected to the host control board (1-1); A gun body (2), the gun body (2) being in communication with the negative pressure pump (1-2); a gun body control board (2-1) and a radio frequency transmitting module are arranged in the gun body (2), the radio frequency transmitting module is electrically connected to the gun body control board (2-1), and the radio frequency transmitting module is communicatively connected to the radio frequency receiving module; A gun barrel (3), wherein the gun barrel (3) is detachably connected to the gun body (2); A tying mechanism, the tying mechanism comprising an elastic line (4), an elastic line tightening device (5) and a fuse device, the elastic line tightening device (5) being arranged on the gun body (2), one end of the elastic line (4) being arranged on the end of the gun barrel (3) in the form of a slipknot, and the other end being fixed to the elastic line tightening device (5), the fuse device being arranged in the gun barrel (3) and being suitable for cutting off the elastic line (4); The elastic line tightening device (5) and the fuse device are both electrically connected to the gun body control panel (2-1).

2. An anorectal ligation device according to claim 1, characterized in that: A liquid storage bottle (6) is arranged between the gun body (2) and the negative pressure pump (1-2); the liquid storage bottle (6) is arranged in the main machine (1); and the upper part of the liquid storage bottle (6) is connected to the negative pressure pump (1-2) and the gun body (2) respectively through two exhaust pipes.

3. An anorectal ligation device according to claim 2, characterized in that: An opening is provided on the top of the liquid storage bottle (6), and a bottle cap is provided at the opening; two air suction hoses are connected to the bottle cap, and the air extraction pipe is connected to the air suction hoses.

4. An anorectal ligation device according to claim 2, characterized in that: The liquid storage bottle (6) is detachably connected to the main machine (1).

5. The anorectal ligation device according to claim 1, characterized in that: The gun body (2) is provided with a start button (2-2), and when pressed, the start button (2-2) is connected to the gun body control panel (2-1); the host (1) is provided with a switch button (1-3) and a stop button (1-4), and the switch button (1-3) and the stop button (1-4) are suitable for turning on and off the host (1).

6. The anorectal ligation device according to claim 1, characterized in that: The elastic line tightening device (5) comprises a tightening drive device (5-1) and a tightening wheel (5-2); the tightening drive device (5-1) is arranged in the gun body; the tightening wheel (5-2) is arranged at the output end of the tightening drive device (5-1); and the other end of the elastic line (4) is fixed on the tightening wheel (5-2).

7. An anorectal ligation device according to claim 6, characterized in that: The elastic line tightening device (5) also includes a torque sensor, which is electrically connected to the gun body control board (2-1) and detects the output torque of the tightening drive device (5-1).

8. The anorectal ligation device according to claim 1, characterized in that: The gun barrel (3) comprises a negative pressure tube (3-1), an elastic line tube (3-2) and a gun head (3-3); the negative pressure tube (3-1) and the elastic line tube (3-2) are arranged in parallel; the gun head (3-3) is connected to one end of the negative pressure tube (3-1); the gun head (3-3) is in an "L" shape; the elastic line (4) passes through the elastic line tube (3-2); one end is sleeved on the end of the gun head (3-3); and the other end is fixed to the elastic line tightening device (5); when the elastic line tightening device (5) tightens the elastic line (4), the elastic line (4) is separated from the end of the gun head (3-3).

9. An anorectal ligation device according to claim 8, characterized in that: A puncture device (3-3-1) is arranged in the inner side wall of the end of the gun head (3-3).

10. A method for using an anorectal ligation device, characterized in that: include: a: One end of the elastic line (4) is sleeved on the end of the gun barrel (3) in the form of a slipknot, and the other end is fixed to the elastic line tightening device (5), and the gun barrel (3) is fixed to the gun body (2), and the gun body (2) is connected to the negative pressure pump (1-2) through the exhaust pipe; b: Press the switch button (1-3) on the main unit (1) and aim the gun tip (3-3) at the tissue to be ligated; c: Press the start button (2-2) on the gun body (2), and the negative pressure pump (1-2) starts the suction process; d: When the pressure of the negative pressure pump (1-2) reaches the set pressure value, the elastic line tightening device (5) starts to tighten the elastic line (4), and the elastic line (4) is separated from the end of the gun barrel (3); e: When the output torque of the tightening driving device (5-1) reaches the set torque value, the tightening of the elastic wire (4) is stopped, and the elastic wire (4) is cut off by the fuse device; f: After the ligation is completed, press the switch button (1-3) on the main unit (1), take out the liquid storage bottle (6) and clean the liquid storage bottle (6).

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