Disposable full-automatic electric hemorrhoid ligation anastomat

Abstract

The application discloses a disposable full-automatic electric hemorrhoid ligation anastomat, and relates to the technical field of hemorrhoid treatment. The anastomat comprises an anastomat body for holding and operation, an inner sleeve for generating negative pressure and sucking hemorrhoid tissue, an outer sleeve, a tightening device and a negative pressure device. The negative pressure end of the inner sleeve is provided with a protruding part, and a through hole is arranged in the protruding part. A ligation line is arranged in the through hole, and the ligation line is formed with a knot at one end and a ligation ring at the other end. The tightening device is arranged in the anastomat body and is in transmission connection with the ligation line, and is used for tightening the ligation ring. The negative pressure device is connected with the inner sleeve and is used for generating negative pressure to suck the hemorrhoid tissue. The automatic tightening of the ligation ring is realized through the tightening device, and manual knotting and line cutting are not needed, so that the anastomat is convenient to use and can complete the coherent process of one-time sucking of tissue, automatic tightening and automatic cutting of the line.

Description

Technical Field

[0001] This invention relates to the field of hemorrhoid treatment technology, and in particular to a disposable fully automatic electric hemorrhoid ligation stapler. Background Technology

[0002] Hemorrhoids are a chronic disease characterized by one or more soft venous masses formed by varicose veins in the venous plexus at the bottom of the rectum and anal mucosa. In clinical treatment, banding therapy is a widely used non-surgical treatment for internal hemorrhoids, mixed hemorrhoids, etc. Its basic principle is to use instruments to band the root of the hemorrhoid with small rubber bands or sutures. The elastic contraction force of the rubber band or suture knot blocks the blood and oxygen supply to the hemorrhoid, causing it to gradually become ischemic, necrotized, and fall off, ultimately achieving a cure.

[0003] Currently, routine hemorrhoid ligation procedures in clinical practice, especially when using non-disposable instruments or certain traditional ligation methods, often involve using a negative pressure suction device to draw the hemorrhoid tissue into the ligation tube. Subsequently, the doctor needs to manually ligate the base of the hemorrhoid with sutures. This usually means that the doctor needs to use a needle holder to hold the suture and, in the narrow and limited field of vision of the anus, tie a surgical knot through complex operations to secure the suture to the root of the hemorrhoid. Then, surgical scissors or suture cutters are used to cut off the excess suture ends.

[0004] Performing knot-tying and suture-cutting within the narrow anal canal demands extremely high surgical skill from the surgeon, is incredibly inconvenient, and time-consuming. Secondly, due to the limited operating space, the tightness of the knot is difficult to control precisely; too loose a knot may lead to ligation failure or postoperative bleeding, while too tight a knot may cause severe pain or premature suture dislodgement. Manual knot-tying and suture-cutting involve two separate steps, making the process cumbersome and increasing the complexity of the surgery and the risk of infection. Summary of the Invention

[0005] To overcome the problems mentioned in the background art, the present invention adopts the following technical solution: A disposable fully automatic electric hemorrhoid ligation stapler includes: The stapler body has a head end and a gripping part, and the stapler body has a receiving cavity inside; An inner tube extends along an extension direction and has a negative pressure end and a connecting end. The connecting end of the inner tube extends into the receiving cavity at the head end of the stapler. The negative pressure end of the inner tube is provided with a protrusion. The protrusion is provided with at least one through hole in the same direction as the extension direction. Each through hole is provided with a ligation suture. One end of the ligation suture is provided with a knot. The other end of the ligation suture passes through the knot to form a ligation loop and is fitted around the outer periphery of the negative pressure end of the inner tube. The knot is configured such that the ligation suture can move within the knot under the action of external force so that the ligation loop is tightened. An outer sleeve is fitted over the inner sleeve. The outer sleeve has a fixed end and an installation end. The fixed end of the outer sleeve is fixedly installed at the head end of the stapler body, and the installation end of the outer sleeve is fixedly connected to the negative pressure end of the inner sleeve. A tightening device is disposed within a receiving cavity. The tightening device is configured to tighten the ligature wire so that the ligature wire moves within the knot and tightens the ligature loop. After tightening to a certain tightness, the rear end of the ligature wire automatically breaks under the action of tension. A negative pressure device is disposed in the receiving cavity and is connected to the connecting end of the inner sleeve, for generating negative pressure at the negative pressure end of the inner sleeve to suck up hemorrhoid tissue.

[0006] Optionally, the ligation thread is an elastic thread, and a non-elastic thread is connected to one end of the ligation thread away from the knot. The breaking limit of the non-elastic thread is less than that of the elastic thread, so that the non-elastic thread breaks before the elastic thread under a predetermined tension. After the non-elastic thread breaks, the ligation ring is in the optimal tightness state.

[0007] Optionally, the protrusion is provided with at least two through holes in the same direction as the extension direction. Each through hole is provided with a ligation wire. The ligation wire connected to the ligation ring away from the negative pressure end passes through the radial inner side of the ligation ring near the negative pressure end and enters the corresponding through hole of the protrusion.

[0008] Optionally, the tightening device includes a geared motor and a winding wheel. The geared motor is fixedly installed in the receiving cavity inside the anastomosis device body. The output shaft of the geared motor is connected to the winding wheel for transmission. A tightening line is fixedly installed on the winding wheel. A connecting line is provided on the non-elastic line and the connecting line is fixedly connected to the tightening line.

[0009] Optionally, a plurality of wire retaining rings are provided along the circumferential direction of the inner sleeve, the wire retaining rings being movably mounted on the inner sleeve and configured to secure redundant tightening wires.

[0010] Optionally, after the aforementioned ligature is tightened and the non-elastic cord is broken, the adjacent subsequent non-elastic cord is in an unstretched state.

[0011] Optionally, the negative pressure device includes a negative pressure pump, which is fixedly installed in the receiving cavity. The output end of the negative pressure pump is connected to a first negative pressure pipe, and the end of the first negative pressure pipe opposite to the output end of the negative pressure pump is connected to the connection end of the inner sleeve.

[0012] Optionally, the negative pressure device further includes a negative pressure sensor, which is fixedly installed in the receiving cavity. A second negative pressure tube is connected to the negative pressure sensor, and one end of the second negative pressure tube away from the negative pressure sensor is connected to the first negative pressure tube. The negative pressure sensor is used to detect the negative pressure generated by the negative pressure pump.

[0013] Optionally, the negative pressure device further includes a pressure relief valve, which is fixedly installed in the receiving cavity. A third negative pressure pipe is connected to the pressure relief valve, and one end of the third negative pressure pipe opposite to the pressure relief valve is connected to the first negative pressure pipe. The pressure relief valve is used to release the negative pressure in the inner sleeve after the ligation is completed.

[0014] Optionally, a power supply is also fixedly installed inside the receiving cavity, a main switch is provided on the side of the stapler body, and a motor switch and a pressure relief button are provided on the inner side of the gripping part of the stapler.

[0015] Optionally, a display screen is fixedly installed on the top of the anastomosis device body, a control board and a buzzer are fixedly installed inside the receiving cavity, the control board is electrically connected to the display screen, the power supply is electrically connected to the display screen and the control board respectively, the geared motor and the power supply are electrically connected through a motor switch, the negative pressure sensor is electrically connected to the control board, and the control board is configured to control the buzzer to emit a sound when the negative pressure sensor detects a set negative pressure value.

[0016] In summary, the present invention has at least one of the following beneficial technical effects: 1. By setting up a tightening device to automatically pull the ligation line, the complex steps of manually tying knots and cutting lines in the narrow anal space of traditional surgery are replaced. Doctors only need to start the motor to achieve automatic tightening of the ligation ring. There is no need to use auxiliary instruments such as needle holders and surgical scissors for surgical knotting, which greatly shortens the operation time and lowers the technical threshold caused by limited operating space.

[0017] 2. The ligation suture structure combines elastic and non-elastic threads, and the breaking limit of the non-elastic thread is set to be less than that of the elastic thread. When the tightening device applies a predetermined tension, the non-elastic thread will automatically break when the ligation ring reaches the optimal tightness. This avoids the problems of manual knotting leading to ligation failure and postoperative bleeding due to being too loose, or causing severe pain and premature suture loosening due to being too tight.

[0018] 3. It integrates automatic tightening and negative pressure release functions, and achieves suture separation by automatic breakage of non-elastic threads after tightening, eliminating the need for doctors to cut the sutures. At the same time, it completes the continuous process of tissue aspiration, automatic tightening and automatic suture breakage in one go, reducing the patient's pain and discomfort. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 For this application Figure 1 Enlarged structural diagram at point A; Figure 3 This is a cross-sectional view of the overall structure of this application; Figure 4 This is a schematic diagram of the structure of the negative pressure device and the inner sleeve in this application; Figure 5 For this application Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the structure of the collection device and the inner sleeve in this application; Figure 7 For this application Figure 6 Enlarged structural diagram at point C; Figure 8 This is a schematic diagram of the ligation suture connection structure in this application; Figure 9 For this application Figure 8 Enlarged structural diagram at point D; Reference numerals: 100, Anastomosis device body; 110, Head end; 120, Holding part; 130, Receiving cavity; 140, Power supply; 150, Main switch; 160, Motor switch; 170, Pressure relief button; 180, Display screen; 190, Control panel; 200, Inner sleeve; 210, Negative pressure end; 220, Connecting end; 230, Protrusion; 240, Through hole; 250, Ligating suture; 251, suture knot; 252, Ligating ring ; 253, Non-elastic wire; 254, Connecting wire; 260, Wire clamping ring; 300, Outer tube; 310, Fixed end; 320, Mounting end; 400, Tightening device; 410, Gear motor; 420, Winding reel; 430, Tightening wire; 500, Negative pressure device; 510, Negative pressure pump; 520, First negative pressure pipe; 530, Second negative pressure pipe; 540, Third negative pressure pipe; 550, Negative pressure sensor; 560, Pressure relief valve. Detailed Implementation

[0020] It should be understood that all descriptions are given for illustrative purposes only and should not be construed as limiting the invention in any way. In this document, the technical terms "first" and "second" are used for distinguishing purposes only and are not intended to indicate their order or relative importance. The technical term "connection (or linking, etc.)" covers a specific component being directly connected to another component and / or indirectly connected to another component. Furthermore, unless otherwise expressly specified and limited, the dimensions, directions, or positional relationships indicated by technical terms such as "length," "width," "height," "upper," "top," and "bottom" are based on the dimensions, orientations, or positional relationships shown in the accompanying drawings and are used only for the convenience and simplicity of describing the invention, and should not be construed as limiting the invention.

[0021] The following combination Figures 1-9 The present invention will be described in further detail below.

[0022] This embodiment discloses a disposable fully automatic electric hemorrhoid ligation stapler. In this embodiment, it can only be used once. Figures 1-9 As shown, the device includes a stapler body 100 for holding and operating, an inner cannula 200 for generating negative pressure and aspirating hemorrhoid tissue, an outer cannula 300, a tightening device 400, and a negative pressure device 500. The negative pressure end 210 of the inner cannula 200 has a protrusion 230, and a through hole 240 is provided in the protrusion 230. A ligation suture 250 is passed through the through hole 240. One end of the ligation suture 250 forms a knot 251, and the other end passes through the knot 251 to form a ligation ring 252. The tightening device 400 is disposed in the stapler body 100 and is connected to the ligation suture 250 for tightening the ligation ring 252. The negative pressure device 500 is connected to the inner cannula 200 and is used to generate negative pressure to aspirate hemorrhoid tissue. The tightening device 400 realizes the automatic tightening of the ligation ring 252 without the need for manual knotting and suture cutting, which is convenient to use and can complete the continuous process of aspirating tissue, automatically tightening, and automatically cutting sutures in one go.

[0023] Reference Figures 1-3In this embodiment, the stapler body 100 has a head end 110 and a gripping part 120. The gripping part 120 is disposed at the lower part of the stapler body 100 and extends downward. The head end 110 is provided with an installation port and a receiving cavity 130 is provided inside. The inner sleeve 200 extends along an extension direction X and has a negative pressure end 210 and a connecting end 220. The connecting end 220 of the inner sleeve 200 extends from the head end 110 of the stapler body 100 into the receiving cavity 130. Six through holes 240 are evenly opened circumferentially in the protrusion 230, which are in the same direction as the extension direction X. The projection of the through holes 240 in the extension direction X is located between the outer sleeve 300 and the inner sleeve 200. Each through hole A ligation suture 250 is inserted inside the inner sleeve 200. The ligation suture 250 extends into the space between the outer sleeve 300 and the inner sleeve 200. In this embodiment, the ligation suture 250 is a medical-grade elastic thread. One end of the ligation suture 250 is pre-formed into a knot 251. The other end of the ligation suture 250 passes through the knot 251 to form a retractable ligation ring 252. The ligation ring 252 is fitted around the outer periphery of the negative pressure end 210 of the inner sleeve 200. The knot 251 is configured such that the ligation suture 250 can slide unidirectionally within the knot 251 under the action of external force, thereby tightening the ligation ring 252. After the ligation ring 252 is tightened, it can cut off the blood supply to the hemorrhoid tissue, and the hemorrhoid tissue will slowly fall off.

[0024] Reference Figure 3 The outer sleeve 300 is fitted over the inner sleeve 200. The fixed end 310 of the outer sleeve 300 is fixedly installed at the head end 110 of the stapler body 100 by a snap-fit ​​structure. The mounting end 320 of the outer sleeve 300 is fixedly connected to the negative pressure end 210 of the inner sleeve 200 by a thread or snap-fit ​​method to ensure that there is no relative displacement between the inner sleeve 200 and the outer sleeve 300 when aspirating tissue.

[0025] Reference Figure 3 , Figures 6-9 The tightening device 400 is disposed in the receiving cavity 130. It includes a geared motor 410 and a winding wheel 420. The geared motor 410 is fixedly installed in the receiving cavity 130 through a motor bracket. Its output shaft is connected to the winding wheel 420 for transmission. A tightening line 430 is wound and fixed on the winding wheel 420. One end of the ligation line 250 is connected to a non-elastic line 253 behind the knot 251. Specifically, the non-elastic line 253 is a medical suture, such as a polypropylene suture, whose breaking limit is less than that of an elastic line. One end of the non-elastic line 253 is connected to the ligation line 250 by knotting or integral setting. The other end of the non-elastic line 253 is fixedly connected to the tightening line 430 through a connecting line 254. In this way, under a predetermined tension, the non-elastic line 253 will break before the elastic line. After the breakage, the ligation ring 252 is in the optimal tightness state, which can be obtained through the breakage test of the non-elastic line 253.

[0026] Reference Figures 3-4 , Figure 6 In some embodiments, to prevent redundant tightening wires 430 from affecting the operation of the internal mechanism, five wire retaining rings 260 are provided along the circumferential direction of the inner sleeve 200. The wire retaining rings 260 are movably installed on the outer wall of the inner sleeve 200 to organize and fix the excess length of tightening wires 430. The connecting wires 254 between the wire retaining rings 260 can be bent and passed between the wire retaining rings 260 and the inner sleeve 200 to achieve fixation.

[0027] Reference Figures 3-4 The negative pressure device 500 includes a negative pressure pump 510, which is fixedly installed in the receiving cavity 130 at the grip portion 120. Its output end is connected to a first negative pressure tube 520. The end of the first negative pressure tube 520 away from the output end of the negative pressure pump 510 is sealed to the connection end 220 of the inner sleeve 200. In order to accurately control the negative pressure, this embodiment also includes a negative pressure sensor 550 and a pressure relief valve 560. Both the negative pressure sensor 550 and the pressure relief valve 560 are fixedly installed in the receiving cavity 130. A second negative pressure tube 530 is connected to the negative pressure sensor 550. The end of the second negative pressure tube 530 away from the negative pressure sensor 550 is connected to the first negative pressure tube 520. The pressure relief valve 560 is connected to a third negative pressure pipe 540. The end of the third negative pressure pipe 540 away from the pressure relief valve 560 is also connected to the first negative pressure pipe 520. The first negative pressure pipe 520, the second negative pressure pipe 530 and the third negative pressure pipe 540 all have a certain degree of hardness and will not deform under internal negative pressure.

[0028] It should be understood that electrical equipment such as electric reducer and negative pressure pump 510 can be installed with screws or fixed by a fastener inside the stapler body 100. The stapler body 100 can be disassembled and includes two opposing split structures, which are fixedly connected by multiple bolts.

[0029] Reference Figure 3This embodiment also integrates electronic control components. A power supply 140 is fixedly installed inside the receiving cavity 130, such as multiple power supplies 140. A main switch 150 is provided on the side of the stapler body 100, and a motor switch 160 and a pressure relief button 170 are provided on the inner side of the gripping part 120. A display screen 180 is fixedly installed on the top of the stapler body 100, and a control board 190 and a buzzer are fixedly installed inside the receiving cavity 130. The control board 190 is electrically connected to the display screen 180. The power supply 140 is electrically connected to both the display screen 180 and the control board 190. The geared motor 410 and the power supply 140 are electrically connected via a motor switch 160. The negative pressure sensor 550 is electrically connected to the control board 190. The control board 190 is configured to control a buzzer to sound when the negative pressure sensor 550 detects a set negative pressure value, such as -0.08 MPa, indicating that the negative pressure has reached the specified value and has attracted the hemorrhoid tissue, allowing for ligation.

[0030] Reference Figure 1 , Figure 5 The protrusion 230 has six through holes 240 to allow for the ligation of multiple hemorrhoid tissues. When multiple hemorrhoid tissues need to be ligated simultaneously, a ligation suture 250 is installed in each through hole 240. To prevent the multiple ligation rings 252 from tangling, the ligation suture 250 connected to the ligation ring 252 furthest from the negative pressure end 210 passes radially inward from the ligation ring 252 closest to the negative pressure end 210 and then enters the corresponding through hole 240 of the protrusion 230. In this way, when each ligation ring 252 is tightened sequentially, the outer ligation suture 250 will not interfere with the already tightened inner ligation ring 252.

[0031] The implementation principle of this embodiment is as follows: First, turn on the main switch 150. Power supply 140 supplies power to all electronic components, and the display screen 180 lights up. The control board 190 controls the negative pressure pump 510 to generate negative pressure. The negative pressure is transmitted through the first negative pressure tube 520 to the connection end 220 of the inner sleeve 200, causing negative pressure to be generated at the negative pressure end 210 of the inner sleeve 200. The operator holds the grip part 120 and aligns the negative pressure end 210 of the inner sleeve 200 with the hemorrhoid tissue. After the hemorrhoid tissue is partially sucked into the lumen of the inner sleeve 200, the negative pressure sensor 550 monitors the pressure value in real time and displays it on the display screen 180. When the negative pressure reaches the preset value, it indicates that the hemorrhoid tissue has been fully sucked in. The control board 190 triggers the buzzer to sound, prompting the doctor to proceed to the next step. At this time, the negative pressure pump 510 stops working.

[0032] Then, press the motor switch 160, the reduction motor 410 starts, driving the winding wheel 420 to rotate, thereby tightening the winding line 430. The tightening line 430 pulls the non-elastic line 253 through the connecting line 254. The diameter of the knot 251 is larger than the diameter of the through hole 240. The knot 251 is stuck in the through hole 240 of the negative pressure end 210 of the inner sleeve 200. As the winding wheel 420 rotates, the ligation ring 252 slides down outside the negative pressure end 210 of the inner sleeve 200, thereby pulling the ligation line 250 to slide inside the knot 251, causing the ligation ring 252 to gradually contract and tightly constrict the root of the hemorrhoid. As the tension increases, because the breaking limit of the non-elastic line 253 is smaller, when the ligation ring 252 reaches the designed optimal tightness, that is, when it exerts enough pressure on the root of the hemorrhoid to block the blood supply but not to cut the tissue, the non-elastic line 253 automatically breaks. At this time, the ligation ring 252 remains in the optimal tightness state, while the connection at the rear end of the ligation line 250 is disconnected. The doctor completes the procedure by observation.

[0033] Finally, press the pressure relief button 170 to activate the pressure relief valve 560, releasing the negative pressure in the inner cannula 200 to zero. The ligated hemorrhoid tissue is then removed from the negative pressure end 210 of the inner cannula 200. The doctor then withdraws the entire stapler from the anus, leaving the ligation ring 252 at the root of the hemorrhoid.

[0034] For multiple hemorrhoid tissues, after ligating the first hemorrhoid, there is no need to change the instrument. Since the previous non-elastic suture 253 has been broken, the adjacent subsequent non-elastic suture 253 is still in the initial state of not being stretched. The doctor can then re-align the stapler with the next hemorrhoid tissue and repeat the above steps. One person can complete the entire operation, which greatly improves the efficiency of treatment and reduces the patient's pain.

[0035] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A disposable fully automatic electric hemorrhoid ligation stapler, characterized in that, include: The stapler body (100) has a head end (110) and a gripping part (120), and the stapler body (100) has a receiving cavity (130) inside. An inner tube (200) extends in an extending direction and has a negative pressure end (210) and a connecting end (220). The connecting end (220) of the inner tube (200) extends into the receiving cavity (130) at the head end (110) of the stapler. The negative pressure end (210) of the inner tube (200) is provided with a protrusion (230), and the protrusion (230) is provided with at least one through hole (240) in the same direction as the extending direction. Each of the through holes... A ligation wire (250) is provided inside the hole (240). One end of the ligation wire (250) is provided with a knot (251). The other end of the ligation wire (250) passes through the knot (251) to form a ligation ring (252) and is sleeved on the outer periphery of the negative pressure end (210) of the inner sleeve (200). The knot (251) is configured such that the ligation wire (250) can move within the knot (251) under the action of external force, so that the ligation ring (252) is tightened. The outer sleeve (300) is fitted over the inner sleeve (200). The outer sleeve (300) has a fixed end (310) and an installation end (320). The fixed end (310) of the outer sleeve (300) is fixedly installed at the head end (110) of the stapler body (100). The installation end (320) of the outer sleeve (300) is fixedly connected to the negative pressure end (210) of the inner sleeve (200). A tightening device (400) is disposed in a receiving cavity (130). The tightening device (400) is configured to tighten the ligature (250) so that the ligature (250) moves within the knot (251) and tightens the ligature ring (252). After tightening to a certain tightness, the rear end of the ligature (250) automatically breaks under the action of tension. A negative pressure device (500) is provided in the receiving cavity (130). The negative pressure device (500) is connected to the connecting end (220) of the inner sleeve (200) to generate negative pressure at the negative pressure end (210) of the inner sleeve (200) to absorb hemorrhoid tissue.

2. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 1, characterized in that, The ligation suture (250) is an elastic suture. One end of the ligation suture (250) away from the knot (251) is connected to a non-elastic suture (253). The breaking limit of the non-elastic suture (253) is less than that of the elastic suture, so that the non-elastic suture (253) breaks before the elastic suture under a predetermined tension. After the non-elastic suture (253) breaks, the ligation ring (252) is in the optimal tightness state.

3. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 1, characterized in that, The protrusion (230) is provided with at least two through holes (240) in the same direction as the extension direction. Each through hole (240) is provided with a ligation wire (250). The ligation wire (250) connected to the ligation ring (252) away from the negative pressure end (210) passes through the radial inner side of the ligation ring (252) near the negative pressure end (210) and enters the corresponding through hole (240) of the protrusion (230).

4. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 2, characterized in that, The tightening device (400) includes a geared motor (410) and a winding wheel (420). The geared motor (410) is fixedly installed in the receiving cavity (130) inside the anastomosis device body (100). The output shaft of the geared motor (410) is connected to the winding wheel (420) for transmission. A tightening line (430) is fixedly installed on the winding wheel (420). A connecting line (254) is provided on the non-elastic line (253). The connecting line (254) is fixedly connected to the tightening line (430).

5. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 4, characterized in that, A plurality of wire retaining rings (260) are provided along the circumferential direction of the inner sleeve (200). The wire retaining rings (260) are movably mounted on the inner sleeve (200) and are configured to secure redundant tightening wires (430). Preferably, after the first described ligature (252) is tightened and the non-elastic cord (253) is broken, the adjacent second non-elastic cord (253) is in an unstretched state.

6. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 4, characterized in that, The negative pressure device (500) includes a negative pressure pump (510), which is fixedly installed in the receiving cavity (130). The output end of the negative pressure pump (510) is connected to a first negative pressure pipe (520), and the end of the first negative pressure pipe (520) away from the output end of the negative pressure pump (510) is connected to the connection end (220) of the inner sleeve (200).

7. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 6, characterized in that, The negative pressure device (500) also includes a negative pressure sensor (550), which is fixedly installed in the receiving cavity (130). A second negative pressure tube (530) is connected to the negative pressure sensor (550), and one end of the second negative pressure tube (530) away from the negative pressure sensor (550) is connected to the first negative pressure tube (520). The negative pressure sensor (550) is used to detect the negative pressure generated by the negative pressure pump (510).

8. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 6, characterized in that, The negative pressure device (500) also includes a pressure relief valve (560), which is fixedly installed in the receiving cavity (130). A third negative pressure pipe (540) is connected to the pressure relief valve (560), and one end of the third negative pressure pipe (540) away from the pressure relief valve (560) is connected to the first negative pressure pipe (520). The pressure relief valve (560) is used to release the negative pressure in the inner sleeve (200) after the ligation is completed.

9. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 7, characterized in that, A power supply (140) is also fixedly installed in the receiving cavity (130). A main switch (150) is provided on the side of the stapler body (100). A motor switch (160) and a pressure relief button (170) are provided on the inner side of the gripping part (120) of the stapler body (100).

10. The disposable fully automatic electric hemorrhoid ligation stapler according to claim 9, characterized in that, A display screen (180) is fixedly installed on the top of the stapler body (100). A control board (190) and a buzzer are fixedly installed in the receiving cavity (130). The control board (190) is electrically connected to the display screen (180). The power supply (140) is electrically connected to the display screen (180) and the control board (190) respectively. The geared motor (410) and the power supply (140) are electrically connected through a motor switch (160). The negative pressure sensor (550) is electrically connected to the control board (190). The control board (190) is configured to control the buzzer to make a sound when the negative pressure sensor (550) detects a set negative pressure value.

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