Automatic ligation device

Abstract

The present invention relates to the technical field of medical devices, and in particular to an automatic ligation device, comprising a shell, a ligation ring, an air pipe, a hollow adsorption tube, a push tube and a rotating block, wherein the adsorption tube is fixedly connected to the shell, one end of the adsorption tube protrudes from the outside of the shell, the air pipe is arranged on the shell and communicates with one end of the adsorption tube, the push tube is arranged on the shell, and the ligation ring is sleeved on the end of the adsorption tube located outside the shell. When the automatic ligation device of the present invention is in use, the push tube is controlled by a control mechanism to move back and forth on the shell, so that the ligation ring on the adsorption tube is sleeved on the internal hemorrhoids, and the displacement stroke of the push tube is changed by controlling the rotating block, thereby controlling the contact stroke with the ligation ring on the adsorption tube, and the rotating block can drive the rotating block to rotate while the push tube is displaced without manual operation, thereby preventing the phenomenon of staff's misoperation.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an automatic ligation device. Background Art

[0002] "Hemorrhoid band ligation (also known as hemorrhoid rubber band ligation, hemorrhoid suction ligation, etc.)" is a common method for treating hemorrhoids with a definite effect. Its principle is to tie a special rubber ring (such as a rubber ring, latex ring, silicone ring, etc.) to the root (or base) of the internal hemorrhoids, thereby using the elastic retraction force of the rubber ring to block the blood supply of the hemorrhoids, causing them to necrotize, shrink, and fall off, thereby achieving the purpose of healing. The traditional instruments used for band ligation surgery in the past were extremely simple, time-consuming, laborious, and prone to complications. In order to change this situation, an automated instrument that makes band ligation surgery simple and easy has appeared in the past decade, namely, the automatic hemorrhoid band ligation device (also known as a continuous hemorrhoid band ligation device, a continuous hemorrhoid suction ligation device, etc.). The advantages of using this instrument for band ligation surgery are: simple, fast, and accurate operation; a single person can complete the operation, which takes only 5 to 10 minutes; the probability of complications is low; patients generally do not need anesthesia and the pain is mild; most patients do not need to be hospitalized, and the cost of treatment is low.

[0003] The existing ligation device includes a push tube and an adsorption tube, the rubber ring is sleeved on the adsorption head, and the push tube is controlled to make the rubber ring detach from the adsorption tube. When the rubber ring is sleeved on the internal hemorrhoids, since the displacement distance of the existing push tube is manually controlled, the staff may easily make operating errors, resulting in multiple rubber rings being sleeved on the same internal hemorrhoid, which causes a waste of resources, makes it inconvenient for the staff to operate, increases the difficulty of the operation, and reduces the efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the existing ligation device includes a push tube and an adsorption tube, the rubber ring is sleeved on the adsorption tube, and the push tube is controlled to make the rubber ring detach from the adsorption tube. When the rubber ring is sleeved on the internal hemorrhoids, since the displacement distance of the existing push tube is manually controlled, the staff may easily make operating errors, resulting in multiple rubber rings being sleeved on the same internal hemorrhoid, which causes a waste of resources, makes it inconvenient for the staff to operate, increases the difficulty of the operation, and reduces the efficiency. An automatic ligation device is now provided.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an automatic ligation device, including a shell, a ligation ring, an air pipe, a hollow adsorption tube, a push tube and a rotating block, the adsorption tube is fixedly connected to the shell, one end of the adsorption tube protrudes from the outside of the shell, the air pipe is arranged on the shell and communicates with one end of the adsorption tube, the push tube is arranged on the shell, the ligation ring is sleeved on the adsorption tube at one end of the adsorption tube located outside the shell, the end of the push tube located outside the shell is located between the shell and the ligation ring, and the shell is provided with a device for controlling the push tube to move back and forth on the shell. The invention discloses a control mechanism for shifting and pushing the ligation ring out of the adsorption tube, wherein the rotating block is rotatably arranged on the push tube, and the housing is provided with a limit mechanism for limiting the rotation of the rotating block. When the push tube is displaced toward the ligation ring, the push tube pushes the rotating block out of the limit mechanism and realizes the telescopic mechanism for rotating the rotating block. At the same time, the rotating block rotates and controls the displacement distance of the push tube on the housing, thereby realizing the ligation rings at different positions being separated from the adsorption tube. An elastic element for restoring the push tube to the initial position is arranged between the housing and the push tube, and one end of the rotating block away from the telescopic mechanism is abutted against the push tube. The push tube is controlled to move back and forth on the housing by the control mechanism, so that the ligation ring on the adsorption tube is ligated on the internal hemorrhoids. By controlling the rotating block, the displacement stroke of the push tube is changed, and the contact stroke with the ligation ring on the adsorption tube is controlled. At the same time, the rotating block can drive the rotating block to rotate while the push tube is displaced without manual operation, thereby preventing the phenomenon of staff misoperation.

[0006] Further, the telescopic mechanism includes a telescopic protrusion arranged on the push tube, the rotation center axis of the rotating block is parallel to the center axis of the push tube, a plurality of rotating grooves are provided on the rotating block along the circumferential direction, the groove depths between the plurality of rotating grooves are increased successively, the rotating groove includes a rotating section and a rotation-stopping section, the rotating section is an inclined surface with an acute angle to the horizontal direction, the rotation-stopping section is an inclined surface with a right angle or an obtuse angle to the horizontal plane, the lower end of the rotation-stopping section is connected to the lower end of the rotating section, the high end of the rotating section on one rotating groove between two adjacent rotating grooves is connected to the high end of the rotation-stopping section on the other rotating groove, the telescopic protrusion matches the rotating groove, and the telescopic protrusion is clamped in one of the plurality of rotating grooves. By rotating the rotating block, the telescopic protrusion is clamped in the rotating grooves at different positions, and since the groove depths between the rotating grooves are increased successively, the spacing between the telescopic protrusion and the rotating groove is changed, thereby changing the displacement distance of the push tube.

[0007] In order to control the push tube to move back and forth on the shell and contact and push the ligation ring to separate from the adsorption tube, the control mechanism further includes a firing handle and a first spring, wherein the firing handle is rotatably arranged on the shell, one end of the firing handle protrudes from the shell, and the other end of the firing handle is abutted against the push tube, one end of the first spring is arranged on the firing handle, and the other end of the first spring is arranged on the shell. By toggling the firing handle, the firing handle rotates on the shell, so that the other end of the firing handle pushes the push tube to move on the shell, and at the same time, the push tube contacts the ligation ring and separates it from the adsorption tube. When the firing handle is released, the firing handle returns to its initial position under the action of the first spring, and the push tube returns to its original position under the action of the elastic element.

[0008] In order to prevent the rotating block from rotating when the push tube returns to the initial position, the limiting mechanism further includes a limiting block arranged on the housing, and the rotating block is provided with a limiting groove matching the limiting block, the limiting grooves are distributed along the circumferential direction of the rotating block, and the limiting grooves are arranged corresponding to the rotating grooves. By arranging the limiting grooves on the rotating block and cooperating with the limiting blocks on the housing, and the limiting grooves are distributed along the circumferential direction on the limiting block, and the limiting grooves are arranged corresponding to the rotating grooves.

[0009] In order to restore the push tube to its initial position, the elastic element is further a second spring, one end of the second spring is disposed on the housing, and the other end of the second spring is fixed on the push tube. By disposing one end of the second spring on the housing and the other end of the second spring on the push tube, the push tube is restored to its initial position under the action of the second spring.

[0010] In order to prevent the push tube from being displaced too far, the housing is further provided with a guide groove along the displacement direction of the push tube, and a guide block is provided on the push tube, and the guide block is slidably arranged in the guide groove. By providing the guide groove on the housing, the guide groove is the maximum stroke of the push tube, thus limiting the displacement of the push tube.

[0011] In order to meet the treatment of different internal hemorrhoids, further, one end of the adsorption tube is sleeved with an adsorption head, and the ligation ring is sleeved on the adsorption head. By arranging a limit groove on the shell, the limit groove is the maximum stroke of the push tube, so that the displacement of the push tube is limited.

[0012] In order to control the tying ring of the push tube within the corresponding stroke range, further, a spacer is included, and the adsorption head is provided with a plurality of tying rings, and the spacer is provided on the adsorption head, and the spacer and the tying ring are arranged alternately. By arranging the spacer between two adjacent tying rings, the spacing between the two adjacent tying rings can be controlled, and the telescopic protrusion on the push tube can be placed in the corresponding rotating groove, and the push tube can be displaced by the corresponding stroke, so that the push tube can separate the tying ring on the adsorption tube.

[0013] In order to facilitate the connection of one end of the air pipe with the external air source, further, a negative pressure joint is provided at one end of the air pipe away from the adsorption tube, and the negative pressure joint is fixed on the shell. By providing a negative pressure joint on the air pipe, the negative pressure joint and the external air source can be quickly connected, thereby improving work efficiency.

[0014] In order to make the ligation device suitable for elastic wire, it further includes a tightening tube, which is detachably arranged on the shell, the ligation ring is an elastic wire, one end of the elastic wire is wound with a slipknot ring, the middle part is passed through the tightening tube, the other end passes through the tightening tube and is provided with a tightening head for tightening the slipknot ring, the tightening tube is provided with a tightening joint at one end close to the slipknot ring, and a clamping joint at the other end. The elastic wire is sleeved on the adsorption tube of the ligation device and matched with the tightening tube detachably arranged on the shell, so that the slipknot ring of the elastic wire is sleeved and tightened on the internal hemorrhoids.

[0015] In order to facilitate the removal of the tightening tube from the housing, further, the housing is provided with a bayonet matched with the tightening tube, and the tightening tube is clamped in the bayonet. By clamping the tightening tube in the bayonet on the housing, the installation of the tightening tube is facilitated.

[0016] Because rubber rings were used to ligate internal hemorrhoids before, the displacement of the push rod was covered with the rotation of the rotating block. In order to enable the use of rubber rings and elastic lines on the ligation device, a stopper matching the limit groove is further provided on the housing for sliding, and a clamping mechanism for limiting the displacement of the stopper is provided between the stopper and the housing, so that the stopper is always against the rotating groove. By providing the stopper on the housing, the rotating block is limited to the distance that the push tube can be displaced, so that the elastic line set on the adsorption tube can be pushed to the internal hemorrhoids.

[0017] In order to limit the stopper on the housing, the clamping mechanism further includes a barb arranged at one end of the stopper, a clamping block matching the barb is arranged on the housing, and the barb is clamped on the clamping block. By arranging a clamping hook on the stopper, the clamping hook is clamped on the clamping block on the housing, thereby limiting the stopper.

[0018] In order to facilitate the hook to be clamped on the clamping block, further, the end of the hook close to the clamping section is provided with a first guide section in contact with the housing, and the first guide section is an inclined surface gradually inclined upward from the clamping block to the hook. The clamping block contacts the first guide section of the hook, so that the hook is clamped on the clamping block under the action of the first guide section.

[0019] In order to better enable the barb to be clamped to the clamping block, further, a second guide section in contact with the barb is provided on the housing between the clamping block and the barb, and the second guide section is an inclined surface gradually inclined upward from the clamping block to the barb. By providing the second guide section on the housing, the barb is clamped to the clamping block under the action of the second guide section.

[0020] In order to facilitate the barb to be separated from the block, the housing is further provided with a pressure plate for separating the barb from the block, the housing is provided with a channel matching the pressure plate, one end of the pressure plate is arranged in the channel, and a third spring is arranged between the housing and the pressure plate. When one end of the pressure plate contacts the barb, the barb is separated from the block, thereby achieving displacement of the stopper.

[0021] Furthermore, an easy sliding seat is sleeved on the push tube, one end of the second spring is against the easy sliding seat, one end of the rotating block is against the easy sliding seat, and the easy sliding seat is located between the second spring and the rotating block.

[0022] In order to better control the adsorption of the adsorption head, a sealing cap is further provided on the shell to separate the trachea from the outside, one end of the sealing cap is provided on the shell, and the other end of the sealing cap is inserted into the trachea. By providing the sealing cap on the trachea, the adsorption of the adsorption head can be controlled when operated by a single person, which is convenient and quick.

[0023] The beneficial effects of the present invention are as follows: when the automatic ligation device of the present invention is in use, the control mechanism controls the push tube to move back and forth on the shell, so that the ligation ring on the adsorption tube is ligated on the internal hemorrhoids, and the displacement stroke of the push tube is changed by controlling the rotating block, thereby controlling the contact stroke with the ligation ring on the adsorption tube. At the same time, the rotating block can drive the rotating block to rotate while the push tube is displaced without manual operation, thereby preventing the phenomenon of staff's misoperation, and thus avoiding the problem that the existing ligation device includes a push tube and an adsorption tube, the rubber ring is sleeved on the adsorption tube, and the push tube is controlled to make the rubber ring detach from the adsorption tube. When the rubber ring is ligated on the internal hemorrhoids, since the displacement distance of the existing push tube is manually controlled, the staff may easily make an operating error, resulting in multiple rubber rings being sleeved on the same internal hemorrhoid, which causes a waste of resources and makes it inconvenient for the staff to operate, thereby increasing the difficulty of the operation and reducing the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a front view of the present invention;

[0026] Figure 2 is a top view of the present invention;

[0027] Figure 3 yes Figure 1 A partial enlarged view of middle A;

[0028] Figure 4 yes Figure 2 Cross-sectional view of the middle BB;

[0029] Figure 5 is a half-section view of the present invention when tightening the tube;

[0030] Figure 6 is a front view of the tightening tube of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the housing in the present invention;

[0032] Figure 8 It is a front view of the push tube in the present invention;

[0033] Fig. 9 It is a front view of the rotating block in the present invention;

[0034] Fig.10 It is a left view of the rotating block in the present invention;

[0035] Fig.11 yes Fig. 9 Middle CC section view.

[0036] In the figure: 1, shell, 101, guide groove, 102, limit block, 103, bayonet, 104, channel, 105, second guide section, 2, ligation ring, 3, trachea, 4, adsorption tube, 5, push tube, 6, rotating block, 601, rotating groove, 602, limit groove, 7, rotating section, 8, anti-rotation section, 9, firing handle, 10, first spring, 11, second spring, 12, guide block, 13, adsorption head, 14, spacer, 15, negative pressure joint, 16, telescopic protrusion, 17, elastic line, 18, slipknot ring, 19, tensioning head, 20, tightening tube, 21, stopper, 22, clamping block, 23, barb, 24, first guide section, 25, pressure plate, 26, third spring, 27, tightening wire joint, 28, clamping wire joint, 29, easy sliding seat, 30, sealing cap. DETAILED DESCRIPTION

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0038] like Figure 1-11 As shown, an automatic ligation device includes a shell 1, and also includes a ligation ring 2, an air pipe 3, a hollow adsorption tube 4, a push tube 5 and a rotating block 6. The adsorption tube 4 is fixedly connected to the shell 1, one end of the adsorption tube 4 protrudes from the outside of the shell 1, and the other end of the adsorption tube 4 is arranged in the shell 1. The air pipe 3 is arranged on the shell 1 and is connected with one end of the adsorption tube 4 through a joint. The push tube 5 is slidably arranged on the shell 1, and the push tube 5 is sleeved on the outside of the adsorption tube 4. One end of the push tube 5 protrudes from the outside of the shell 1. The ligation ring 2 is sleeved on the adsorption tube 4 at one end of the adsorption tube 4 located outside the shell 1, and the end of the push tube 5 located outside the shell 1 is located between the shell 1 and the ligation ring 2. The shell 1 is provided with a device for controlling the push tube 5. The tube 5 moves back and forth on the shell 1 and pushes the ligation ring 2 to separate from the control mechanism of the adsorption tube 4. The rotating block 6 is rotatably set on the push tube 5. The shell 1 is provided with a limiting mechanism for limiting the rotation of the rotating block 6. When the push tube 5 is displaced toward the ligation ring 2, the push tube 5 pushes the rotating block 6 to separate from the limiting mechanism and realizes the telescopic mechanism of the rotation of the rotating block 6. At the same time, the rotating block 6 rotates and controls the displacement distance of the push tube 5 on the shell 1, thereby realizing the separation of the ligation ring 2 at different positions from the adsorption tube 4. An elastic element for restoring the push tube 5 to its initial position is provided between the shell 1 and the push tube 5. The end of the rotating block 6 away from the telescopic mechanism is abutted against the push tube 5, so that the rotating block 6 is limited on the push tube 5.

[0039] Corresponding marks are provided on the rotating block 6, and these marks correspond to rotating grooves 601 of different depths. The telescopic mechanism includes a telescopic protrusion 16 provided on the push tube 5. The rotation center axis of the rotating block 6 is parallel to the center axis of the push tube 5. A plurality of rotating grooves 601 are opened on the rotating block 6 along the circumferential direction, and the groove depths between the plurality of rotating grooves 601 increase successively. The rotating groove 601 includes a rotating section 7 and a rotation-stopping section 8. The rotating section 7 is an inclined surface with an acute angle to the horizontal direction, and the rotation-stopping section 8 is an inclined surface with a right angle or an obtuse angle to the horizontal plane. The lower end of the rotation-stopping section 8 is connected to the lower end of the rotating section 7, and the high end of the rotating section 7 on one of the rotating grooves 601 between two adjacent rotating grooves 601 is connected to the high end of the rotation-stopping section 8 on the other rotating groove 601. The telescopic protrusion 16 matches the rotating groove 601, and the telescopic protrusion 16 is clamped in one of the plurality of rotating grooves 601.

[0040] The control mechanism includes a firing handle 9 and a first spring 10. The firing handle 9 is rotatably arranged on the shell 1. One end of the firing handle 9 protrudes from the shell 1, and the other end of the firing handle 9 is abutted against the push tube 5. One end of the first spring 10 is arranged on the firing handle 9, and the other end of the first spring 10 is arranged on the shell 1.

[0041] The limiting mechanism includes a limiting block 102 disposed on the housing 1, and a limiting groove 602 matching the limiting block 102 is disposed on the rotating block 6, and the limiting groove 602 is distributed along the circumferential direction of the rotating block 6, and the limiting groove 602 is disposed corresponding to the rotating groove 601. The highest point of the protrusion between two adjacent rotating grooves 601 corresponds to the lowest point of the limiting groove 602, and the highest point of the protrusion between two adjacent rotating grooves 601 and the lowest point of the limiting groove 602 are staggered with each other.

[0042] The elastic element is a second spring 11 , one end of the second spring 11 is disposed on the housing 1 , and the other end of the second spring 11 is disposed on the push tube 5 .

[0043] The housing 1 is provided with a guide groove 101 along the displacement direction of the push tube 5 . The push tube 5 is provided with a guide block 12 , and the guide block 12 is slidably disposed in the guide groove 101 .

[0044] One end of the adsorption tube 4 is sleeved with an adsorption head 13 , and the ligation ring 2 is sleeved on the adsorption head 13 .

[0045] The adsorption head 13 further comprises a spacer 14, on which a plurality of ligating rings 2 are sleeved, and the spacer 14 is sleeved on the adsorption head 13, and the spacer 14 and the ligating rings 2 are alternately arranged. The spacer 14 is located at one end close to the push tube 5.

[0046] A negative pressure connector 15 is disposed at one end of the air pipe 3 away from the adsorption tube 4 , and the negative pressure connector 15 is fixed on the housing 1 .

[0047] It also includes a tightening tube 20, which is detachably arranged on the housing 1. The ligature ring 2 is an elastic line 17, one end of which is wound with a slipknot ferrule 18, the middle part of which is passed through the tightening tube 20, and the other end passes through the tightening tube 20 and is provided with a tightening head 19 for tightening the slipknot ferrule 18. One end of the tightening tube 20 close to the slipknot ferrule 18 is provided with a tightening wire joint 27, and the other end is provided with a clamping wire joint 28. The function of the tightening wire joint 27 is to prevent the elastic line 17 from passing through one end of the tightening tube 20, that is, to limit the displacement of the slipknot ferrule 18, and the function of the clamping wire joint 28 is to prevent the elastic line 17 from passing through the other end of the tightening tube 20, that is, to limit the displacement of the elastic line 17.

[0048] The housing 1 is provided with a bayonet 103 matching the tightening tube 20 , and the tightening tube 20 is clamped in the bayonet 103 .

[0049] The housing 1 is slidably provided with a stopper 21 matching the limit groove 602, and a clamping mechanism for limiting the displacement of the stopper 21 is provided between the stopper 21 and the housing 1, so that the stopper 21 is always abutted against the limit groove 602. The housing 1 is provided with a slide groove along the displacement direction of the stopper 21, and the stopper 21 is provided with a slider matching the slide groove, which is slidably provided in the slide groove, and one end of the stopper 21 protrudes from the outside of the housing 1.

[0050] The clamping mechanism comprises a barb 23 arranged at one end of the stopper 21 , and a clamping block 22 matching the barb 23 is arranged on the housing 1 , and the barb 23 is clamped on the clamping block 22 .

[0051] The end of the barb 23 close to the clamping section is provided with a first guide section 24 in contact with the housing 1 , and the first guide section 24 is an inclined surface gradually inclined upward from the clamping block 22 to the barb 23 .

[0052] The housing 1 is provided with a second guide section 105 in contact with the barb 23 between the clamping block 22 and the barb 23 . The second guide section 105 is a slope that is gradually inclined upward from the clamping block 22 to the barb 23 .

[0053] The housing 1 is provided with a pressing plate 25 for disengaging the barb 23 from the clamping block 22 . The housing 1 is provided with a channel 104 matching the pressing plate 25 . One end of the pressing plate 25 is arranged in the channel 104 . A third spring 26 is arranged between the housing 1 and the pressing plate 25 .

[0054] The push tube 5 is sleeved with an easy sliding seat 29 , one end of the second spring 11 is against the easy sliding seat 29 , one end of the rotating block 6 is against the easy sliding seat 29 , and the easy sliding seat 29 is located between the second spring 11 and the rotating block 6 .

[0055] The housing 1 is provided with a sealing cap 30 for isolating the trachea 3 . One end of the sealing cap 30 is provided on the housing 1 , and the other end of the sealing cap 30 is inserted into the trachea 3 .

[0056] When the automatic ligation device is used, the suction head 13 is found according to the need of the internal hemorrhoids, and then the number of ligation rings 2 to be used is selected according to the internal hemorrhoids. After the number of ligation rings 2 is determined, the number of spacers 14 is determined, and the spacers 14 and the ligation rings 2 are sequentially set on the suction head 13. At the same time, the negative pressure connector 15 at one end of the trachea 3 is connected to the external negative pressure device, and the external negative pressure device is controlled to open and close by the external controller. At this time, the preparation is completed;

[0057] When in use, the specific steps are as follows: first, align the suction head 13 with the internal hemorrhoids that need to be ligated, and then start the negative pressure device through the external controller. The negative pressure reaches the suction tube 4 through the trachea 3, and then reaches the suction head 13 from the suction tube 4. At this time, the suction head 13 absorbs the internal hemorrhoids, and the firing handle 9 is turned to make the firing handle 9 rotate on the shell 1, so that the other end of the firing handle 9 pushes the push tube 5 to move on the shell 1, so that the first spring 10 at one end of the firing handle 9 is stretched. At this time, the telescopic protrusion 16 on the push tube 5 corresponds to one of the rotating grooves 601. At the same time, the push tube 5 pushes the rotating block 6 and the easy sliding seat 29 to move on the shell 1, and makes The telescopic protrusion 16 is inserted into the rotating section 7 of the rotating groove 601. When the limit block 102 on the shell 1 is separated from the limit groove 602 of the rotating groove 601, the rotating block 6 rotates under the guiding action of the rotating section 7, so that the telescopic protrusion 16 is inserted into the rotating groove 601, and the second spring 11 located at one end of the easy sliding seat 29 is compressed. In addition, the push tube 5 can separate a ligation ring 2 from the displacement distance of the adsorption head 13. At the same time, the guide block 12 on the push tube 5 is displaced in the guide groove 101 on the shell 1. In addition, the second spring 11 between the push tube 5 and the shell 1 is compressed, and one end of the push tube 5 gradually moves toward the ligation ring 2. The push tube 5 contacts the ligation ring 2 and pushes the ligation ring 2 to move on the adsorption head 13 until the push tube 5 detaches a ligation ring 2 on the adsorption head 13 and ligates the internal hemorrhoid. At this time, the telescopic protrusion 16 on the push tube 5 is inserted into the limit groove 602 corresponding to the rotating block 6, that is, the push tube 5 is located at the current maximum stroke. Then, the negative pressure device is closed by external control to make the adsorption head 13 detach from the internal hemorrhoid, and the firing handle 9 is released. The firing handle 9 rotates under the action of the first spring 10, so that the firing handle 9 rotates on the shell 1 and returns to the initial position. At the same time, the push tube 5 is displaced on the shell 1 under the action of the second spring 11. , the telescopic protrusion 16 is separated from the rotating groove 601, and one end of the push tube 5 gradually moves away from the adsorption head 13. At this time, the limit block 102 and the limit groove 602 are staggered and do not correspond. When the telescopic protrusion 16 is separated from the rotating groove 601, the limit block 102 contacts the limit groove 602. Similarly, a corresponding rotating section 7 is provided on the limit groove 602. The limit block 102 contacts the rotating section 7 and forces the rotating block 6 to rotate, so that the limit block 102 is inserted into the corresponding limit groove 602. At the same time, the guide block 12 is displaced in the guide groove 101 on the shell 1, and the push tube 5 is restored to the initial displacement, and then the spacer 14 is removed, and the above steps are repeated until the operation is completed;

[0058] When the elastic line 17 is needed, the tightening tube 20 is first clamped into the bayonet 103 on the shell 1, and then the slipknot ring 18 of the elastic line 17 in the tightening tube 20 is sleeved on the adsorption head 13, and then the rotating block 6 is rotated to adjust to the maximum displacement of the push tube 5, so that the stopper 21 corresponds to the corresponding limit groove 602, and the stopper 21 is pushed to slide on the shell 1, and the barb 23 on the stopper 21 moves with the stopper 21, and the second guide section 105 on the shell 1 guides the barb 23, forcing the barb 23 gradually bends, and as the stopper 21 moves, the first guide section 24 on the barb 23 contacts and guides the housing 1, forcing the barb 23 to bend again until the barb 23 corresponds to the clamping block 22, and the barb 23 is automatically clamped on the clamping block 22. At this time, the stopper 21 is located in the limiting groove 602 of the rotating block 6, and the rotating block 6 also moves on the push tube 5 and squeezes the second spring 11 between the housing 1 and the rotating block 6, thereby realizing the displacement of the stopper 21 on the housing 1, and making the stopper 21 always against the limiting groove 602;

[0059] When the elastic line 17 is used for ligation, the suction head 13 is firstly aligned with the internal hemorrhoids to be ligated, and then the negative pressure device is started through the external controller. The negative pressure reaches the suction tube 4 through the trachea, and then reaches the suction head 13 from the suction tube 4. At this time, the suction head 13 absorbs the internal hemorrhoids, and the firing handle 9 is turned to make the firing handle 9 rotate on the shell 1, so that the other end of the firing handle 9 pushes the push tube 5 to move on the shell 1, so that the first spring 10 at one end of the firing handle 9 is stretched, and one end of the push tube 5 gradually moves toward the slipknot ring 18 of the elastic line 17. When the push tube 5 contacts and rotates with the slipknot ring 18 and The slipknot ferrule 18 is pushed to move on the adsorption head 13 until the push tube 5 disengages the slipknot ferrule 18 on the adsorption head 13 and ties the internal hemorrhoids, and the tightening tube 20 is disengaged from the bayonet 103 on the housing 1. At this time, the negative pressure device is closed, and the adsorption head 13 is disengaged from the internal hemorrhoids. By holding the tightening tube 20 and pulling the tensioning head 19 at one end of the tightening tube 20, the tightening tube 20 and the elastic line 17 are relatively displaced, so that the slipknot ferrule 18 at one end of the tightening tube 20 is tightened, and the internal hemorrhoids are tied. Finally, the elastic line 17 behind the slipknot ferrule 18 is shortened to complete the ligation of the internal hemorrhoids.

[0060] When the elastic wire 17 is not needed, the pressing plate 25 is pressed, the pressing plate 25 is displaced in the channel 104 and forces the third spring 26 to be compressed, one end of the pressing plate 25 contacts the barb 23 and drags the barb 23, so that the barb 23 is separated from the clamping block 22, and then the stopper 21 is controlled to move on the housing 1 and separate from the limiting groove 602 on the rotating block 6, and finally the pressing plate 25 is released, and the pressing plate 25 is restored to the initial position under the action of the third spring 26;

[0061] Before ligation, the sealing cap 30 is closed to ensure the air path is sealed. After ligation, the sealing cap 30 is opened to separate the hemorrhoid from the adsorption head 13. By controlling the sealing cap 30, the negative pressure of the negative pressure device can be connected or disconnected from the adsorption head 13.

[0062] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An automatic ligation device, comprising a housing (1), characterized in that: The invention also comprises a ligation ring (2), an air pipe (3), a hollow adsorption tube (4), a push tube (5) and a rotating block (6); the adsorption tube (4) is fixedly connected to the shell (1); one end of the adsorption tube (4) protrudes from the outside of the shell (1); the air pipe (3) is arranged on the shell (1) and communicates with one end of the adsorption tube (4); the push tube (5) is arranged on the shell (1); the ligation ring (2) is sleeved on the adsorption tube (4) at one end of the adsorption tube (4) located outside the shell (1); the end of the push tube (5) located outside the shell (1) is located between the shell (1) and the ligation ring (2); a push tube (5) is arranged on the shell (1) for controlling the push tube (5) to move back and forth on the shell (1) and to push the ligation ring (2) to be removed; The control mechanism for separating the ligation tube (4) from the adsorption tube (4) is provided, the rotating block (6) is rotatably arranged on the push tube (5), the shell (1) is provided with a limit mechanism for limiting the rotation of the rotating block (6), when the push tube (5) moves toward the ligation ring (2), the push tube (5) pushes the rotating block (6) to separate from the limit mechanism and realizes the telescopic mechanism for rotating the rotating block (6), and at the same time, the rotating block (6) rotates and controls the displacement distance of the push tube (5) on the shell (1), thereby realizing the separation of the ligation ring (2) at different positions from the adsorption tube (4), an elastic element for restoring the push tube (5) to the initial position is provided between the shell (1) and the push tube (5), and one end of the rotating block (6) away from the telescopic mechanism is abutted against the push tube (5); The telescopic mechanism comprises a telescopic protrusion (16) arranged on the push tube (5), the rotation center axis of the rotating block (6) is parallel to the center axis of the push tube (5), a plurality of rotating grooves (601) are opened on the rotating block (6) along the circumferential direction, the groove depths between the plurality of rotating grooves (601) are increased successively, the rotating groove (601) comprises a rotating section (7) and a rotation-stopping section (8), the rotating section (7) is an inclined surface with an acute angle to the horizontal direction, the rotation-stopping section (8) is an inclined surface with a right angle or an obtuse angle to the horizontal plane, the lower end of the rotation-stopping section (8) is connected to the lower end of the rotating section (7), the high end of the rotating section (7) on one rotating groove (601) between two adjacent rotating grooves (601) is connected to the high end of the rotation-stopping section (8) on the other rotating groove (601), the telescopic protrusion (16) matches the rotating groove (601), and the telescopic protrusion (16) is clamped in one of the plurality of rotating grooves (601); The control mechanism comprises a firing handle (9) and a first spring (10); the firing handle (9) is rotatably arranged on the housing (1); one end of the firing handle (9) protrudes from the housing (1); the other end of the firing handle (9) is abutted against the push tube (5); one end of the first spring (10) is arranged on the firing handle (9); and the other end of the first spring (10) is arranged on the housing (1).

2. The automatic ligation device according to claim 1, characterized in that: The limiting mechanism comprises a limiting block (102) arranged on the housing (1); a limiting groove (602) matching the limiting block (102) is arranged on the rotating block (6); the limiting groove (602) is distributed along the circumferential direction of the rotating block (6); and the limiting groove (602) is arranged corresponding to the rotating groove (601).

3. The automatic ligation device according to claim 1, characterized in that: The elastic element is a second spring (11), one end of the second spring (11) is abutted against the housing (1), and the other end of the second spring (11) is arranged on the push tube (5).

4. The automatic ligation device according to claim 1, characterized in that: The housing (1) is provided with a guide groove (101) along the displacement direction of the push tube (5); a guide block (12) is provided on the push tube (5); and the guide block (12) is slidably arranged in the guide groove (101).

5. The automatic ligation device according to claim 1, characterized in that: One end of the adsorption tube (4) is sleeved with an adsorption head (13), and the ligation ring (2) is sleeved on the adsorption head (13).

6. The automatic ligation device according to claim 5, characterized in that: It also comprises a spacer (14), a plurality of ligating rings (2) are sleeved on the adsorption head (13), the spacer (14) is sleeved on the adsorption head (13), and the spacer (14) and the ligating rings (2) are arranged alternately.

7. The automatic ligation device according to claim 1, characterized in that: A negative pressure joint (15) is provided at one end of the air pipe (3) away from the adsorption pipe (4), and the negative pressure joint (15) is fixed on the housing (1).

8. The automatic ligation device according to claim 1, characterized in that: The invention also comprises a tightening tube (20), wherein the tightening tube (20) is detachably arranged on the shell (1); the ligating ring (2) is an elastic wire (17); one end of the elastic wire (17) is wound with a slipknot ring (18); the middle part of the elastic wire (17) is passed through the tightening tube (20); the other end passes through the tightening tube (20) and is provided with a tightening head (19) for tightening the slipknot ring (18); one end of the tightening tube (20) close to the slipknot ring (18) is provided with a tightening wire joint (27); and the other end is provided with a clamping wire joint (28).

9. The automatic ligation device according to claim 8, characterized in that: The housing (1) is provided with a bayonet (103) matching the tightening tube (20), and the tightening tube (20) is clamped in the bayonet (103).

10. The automatic ligation device according to claim 8, characterized in that: A stopper (21) matching the limiting groove (602) is slidably disposed on the housing (1), and a clamping mechanism for limiting the displacement of the stopper (21) is disposed between the stopper (21) and the housing (1), so that the stopper (21) is always abutted against the rotating groove (601).

11. The automatic ligation device according to claim 10, characterized in that: The clamping mechanism comprises a barb (23) arranged at one end of a stopper (21); a clamping block (22) matching the barb (23) is arranged on the housing (1); and the barb (23) is clamped on the clamping block (22).

12. The automatic ligation device according to claim 11, characterized in that: A first guide section (24) in contact with the housing (1) is provided at one end of the barb (23) close to the clamping section, and the first guide section (24) is a slope that is gradually inclined upward from the clamping block (22) to the barb (23).

13. The automatic ligation device according to claim 11 or 12, characterized in that: A second guide section (105) in contact with the barb (23) is provided on the housing (1) between the clamping block (22) and the barb (23); the second guide section (105) is an inclined surface which is gradually inclined upward from the clamping block (22) toward the barb (23).

14. The automatic ligation device according to claim 13, characterized in that: The housing (1) is provided with a pressure plate (25) for disengaging the barb (23) from the clamping block (22); the housing (1) is provided with a channel (104) matching the pressure plate (25); one end of the pressure plate (25) is arranged in the channel (104); and a third spring (26) is arranged between the housing (1) and the pressure plate (25).

15. The automatic ligation device according to claim 3, characterized in that: The push tube (5) is sleeved with an easy sliding seat (29), one end of the second spring (11) is abutted against the easy sliding seat (29), one end of the rotating block (6) is abutted against the easy sliding seat (29), and the easy sliding seat (29) is located between the second spring (11) and the rotating block (6).

16. The automatic ligation device according to claim 1, characterized in that: The housing (1) is provided with a sealing cap (30) for isolating the air pipe (3) from the outside, one end of the sealing cap (30) is arranged on the housing (1), and the other end of the sealing cap (30) is inserted into the air pipe (3).

Images