Ligation device, anorectal ligation stapler and ligation method

Abstract

This invention relates to the field of medical device technology and discloses a rectal ligation stapler. The rectal ligation stapler includes a first suture body and one or more second suture bodies. One end of each second suture body has a loop, and the other end is connected to the first suture body. Multiple second suture bodies are arranged along the extension direction of the first suture body. The rectal ligation stapler includes the aforementioned ligation device and a suture support. The suture support includes a tube connected to a housing and a through hole in the tube. The loop at one end of each of the one or more second suture bodies passes through the outer wall of the tube and the other end passes through the through hole and connects to the first suture body. The ligation method uses the aforementioned ligation device. This rectal ligation stapler allows for continuous ligation actions within a confined space.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a ligation device, an anorectal ligation stapler and a ligation method. Background Art

[0002] In clinical applications, methods for treating excess soft tissue or growths in the human body include using surgical instruments to tighten the soft tissue or growths, causing it to become ischemic and necrotic and eventually fall off, such as using a polyp snip to ligate nasal polyps, ear polyps, etc., using a tonsil ligate to ligate growths in the tonsils, using an endoscopic ligation device to ligate esophageal varicose veins, etc., and using an anorectal ligation stapler to ligate hemorrhoids.

[0003] In the application of the prior art, it is difficult to achieve continuous ligation by the ligation methods of surgical instruments. Even if continuous ligation can be achieved, it is difficult for a single person to complete the operation, and at least two people are required to perform the continuous ligation action. For example, the automatic elastic wire ligation device disclosed by Chinese patent CN201420390920.4 is a relatively advanced hemorrhoid ligation stapler on the market, which can perform continuous ligation actions. However, when performing the ligation of a hemorrhoid, it is necessary to release the wire push tube, and another operator assists in holding the stapler. The operator completes the tightening action of the elastic wire by pulling the wire push tube, and finally releases the elastic wire and the wire push tube, and then performs the ligation action of the next hemorrhoid. It can be seen that the stapler cannot complete the continuous ligation action by a single person, and the ligation action is relatively cumbersome and time-consuming. At the same time, the structure of the stapler is relatively complex and the production cost is relatively high.

[0004] Based on the defects in the prior art, the present application provides a ligation device, an anorectal ligation stapler and a ligation method to solve the problems in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a ligation device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A ligation device comprises: a first wire body; and one or more second wire bodies, wherein a loop is formed at one end of the second wire body and the other end is connected to the first wire body, and the plurality of second wire bodies are arranged along the extension direction of the first wire body.

[0008] Preferably, the tensile shear strength of the second wire body is greater than the tensile shear strength of the first wire body; or the ligation device includes a cutter for applying a shear force to the second wire body.

[0009] Preferably, the tensile shear strength of the second wire body is twice that of the tensile shear strength of the first wire body.

[0010] Preferably, the second wire body is an elastic wire, and the aperture size of the ring sleeve is adjustable.

[0011] Preferably, the ligation device is any one of a polyp coil cutter, a tonsil cutter, an endoscopic ligation device, and an anorectal ligation stapler.

[0012] The present invention also provides the following technical solutions:

[0013] An anorectal ligation stapler comprises the aforementioned ligation device, and also comprises: a shell; and a wire body support, wherein the wire body support comprises a pipe connected to the shell, and a through hole opened on the pipe, wherein a ring sleeve at one end of one or more second wire bodies is sleeved on the outer wall of the pipe, and the other end passes through the through hole and is connected to the first wire body, and when a pulling force is applied to one end of the first wire body, the ring sleeve of the second wire body is separated from the pipe under the action of the pulling force; and a negative pressure tube, wherein one end of the negative pressure tube is connected to an end of the pipe away from the ring sleeve, and the other end is used to connect to a negative pressure machine.

[0014] Preferably, the loops of the plurality of second wire bodies are sequentially inserted onto the pipe fitting, and the loop of the second wire body closest to the force-applying end of the first wire body is inserted onto the pipe fitting last.

[0015] Preferably, the plurality of rings are arranged along the extension direction of the pipe, and the ring that is last inserted on the pipe is closest to the end of the pipe away from the shell.

[0016] Preferably, the anorectal ligation stapler further comprises: a handle connected to an end of the housing away from the wire support; and a wire winding disk rotatably connected to the handle, the first wire body is wound around the wire winding disk, and the force-applying end thereof is connected to the wire winding disk;

[0017] and a gear connected to the winding drum; and a firing rod rotatably connected to the handle; and a sector gear connected to the firing rod and meshing with the gear.

[0018] Preferably, the anorectal ligation stapler also includes: a shaft body, which is fixedly connected to the winding drum and rotatably connected to the handle; and a one-way bearing, a gear sleeve is arranged on the shaft body and is connected to the shaft body through the one-way bearing; and a stop tooth, which is connected to the handle and meshes with the one-way teeth arranged on the winding drum to make the winding drum rotate in one direction.

[0019] Preferably, the negative pressure tube extends to pass through the shell and the handle in sequence, and the anastomosis device also includes: a three-way tube, which is arranged in the handle, and its first end and second end are both connected to the negative pressure tube; and a negative pressure switch, which is rotatably connected to the handle, and one end of which is provided with a plug to close the third end of the three-way tube.

[0020] Preferably, the anorectal ligation stapler also includes: a knife holder, which is rotatably connected to the shell, and the knife is mounted on the knife holder, and a curved groove is provided on the knife holder; and a firing button, which is arranged on the handle; and a connecting rod, one end of the connecting rod is connected to the firing button, and the other end is hung in the curved groove; when force is applied to the firing button, the knife holder is driven to rotate through the connecting rod, so that the knife provides shear force to the second wire body.

[0021] Preferably, the anorectal ligation stapler also includes an elastic member, one end of which abuts against the end of the firing button, and the other end of which abuts against the handle, and is used to provide a reset elastic force to the firing button after the firing button completes one firing.

[0022] The present invention also provides the following technical solutions:

[0023] A ligation method, using the aforementioned ligation device, comprises the following steps:

[0024] S1. The loop of the second wire body closest to one end of the first wire body is set on the object to be ligated;

[0025] S2. Applying a tensile load to the other end of the first wire body to drive the second wire body to be in a straight state;

[0026] S3. Apply a shearing force to the second wire body, and the tool provides the shearing force to separate the second wire body from the first wire body, or apply a tensile load to the first wire body, and the first wire body provides the shearing force to separate the second wire body from the first wire body.

[0027] Preferably, the ligation method further comprises the step: S4. Repeating steps S1 to S3 multiple times to allow the multiple second wire bodies to be separated from the first wire body in sequence.

[0028] Preferably, step S1 further comprises applying a tensile load to the first wire body to tighten the loop of the second wire body.

[0029] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0030] 1. The present invention discloses a ligation device, which uses the same pulling wire to control a plurality of elastic wires to complete the continuous ligation action of the plurality of elastic wires. Specifically, in the first embodiment of the ligation device, it is only necessary to apply a continuous tensile load to the first wire body to realize the tightening action of the loop, the straightening action of the second wire body, and the separation action of the second wire body from the first wire body, and the above three actions can be repeated to realize the continuous ligation action, that is, in the entire continuous ligation action, it is only necessary to apply a repeated tensile load to the first wire body. The device can be applied to various soft tissue ligation instruments in clinical practice, and truly realizes the continuous ligation action, significantly reduces the difficulty of executing the ligation action, and significantly improves the execution efficiency;

[0031] 2. In the second embodiment of the ligation device, only a continuous tensile load is applied to the first wire body to achieve the tightening action of the loop and the straightening action of the second wire body, and then the second wire body and the first wire body are broken by the cutter, and the above three actions are repeated to achieve a continuous ligation action, that is, in the entire continuous ligation action, only a repeated tensile load is applied to the first wire body and power is provided to the cutter to achieve a continuous ligation action. Compared with the ligation method in the prior art, the execution difficulty can be reduced and the execution efficiency can be improved;

[0032] 3. The anorectal ligation stapler disclosed in the present invention is provided with a specific actuator on the basis of the ligation device, so that hemorrhoids can be ligated continuously. Specifically, in the first embodiment of the anorectal ligation stapler, a continuous tensile load is applied to the first wire body, and the action of making the ring sleeve detach from the wire body support can also be realized, that is, the first wire body is continuously pulled to complete the detachment of the ring sleeve, the tightening of the ring sleeve, the straightening of the ring sleeve, and the detachment of the second wire body. Then, continuous pulling action can be performed to achieve continuous ligation. Compared with the anorectal ligation stapler in the prior art, only one person is required to hold the device, which is a subversive technological innovation in the field and can also reduce the manufacturing cost of the device.

[0033] 4. In the second embodiment of the anorectal ligation stapler, the first thread is continuously pulled to complete the detachment, tightening and straightening of the cuff, and then the second thread is detached by a cutter to achieve sequential ligation of the hemorrhoids, and continuous pulling is then performed to achieve continuous ligation, which is also a significant innovation compared to the prior art;

[0034] 5. The ligation method disclosed in the present invention can be used in the scenario of performing continuous ligation on the closed objects in a narrow space, and it also has guiding significance for other industrial applications besides the medical field. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 It is a structural schematic diagram of a first embodiment of the ligation device of the present invention;

[0037] Figure 2 It is a structural schematic diagram of a second embodiment of the ligation device of the present invention;

[0038] Figure 3 is a front view of a first embodiment of an anorectal ligation stapler of the present invention;

[0039] Figure 4It is an internal structure diagram of the first embodiment of the anorectal ligation stapler of the present invention;

[0040] Figure 5 is an exploded view of the first embodiment of the anorectal ligation stapler of the present invention and an internal view of the handle at position A;

[0041] Figure 6 is a three-dimensional diagram of a ligation device and a support member in a first embodiment of an anorectal ligation stapler of the present invention;

[0042] Figure 7 is a front view of a second embodiment of the anorectal ligation stapler of the present invention;

[0043] Figure 8 It is an internal structure diagram of the second embodiment of the anorectal ligation stapler of the present invention;

[0044] Fig. 9 is an exploded view of the second embodiment of the anorectal ligation stapler of the present invention and an internal view of the handle at position A;

[0045] Fig.10 is a three-dimensional diagram of a ligation device and a support member in a second embodiment of an anorectal ligation stapler of the present invention;

[0046] In the figure:

[0047] The ligation device 1-100, 2-100, the first thread body 1-110, 2-110, the second thread body 1-120, 2-120, the ring sleeve 1-121, 2-121, and the knife 2-130;

[0048] Support member 1-200, 2-200, housing 1-210, 2-210, handle 1-220, 2-220;

[0049] Line support 1-300, 2-300, pipe fittings 1-310, 2-310, through holes 1-311, 2-311;

[0050] Negative pressure components 1-400, 2-400, negative pressure tubes 1-410, 2-410, three-way tubes 1-420, 2-420, negative pressure switches 1-430, 2-430, plugs 1-431, 2-431;

[0051] Firing assembly 1-500, 2-500, winding reel 1-510, 2-510, one-way teeth 1-511, 2-511, gear 1-520, 2-520, firing rod 1-530, 2-530, fan gear 1-540, 2-540, shaft 1-550, 2-550, one-way bearing 1-560, 2-560, stop tooth 1-570, 2-570, return torsion spring 1-580, 2-580;

[0052] Cutting assembly 2-600, knife seat 2-610, curved groove 2-611, firing button 2-620, connecting rod 2-630, elastic member 2-640. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0054] The present invention provides a first embodiment of a ligation device, comprising: Figure 1 , which is a schematic structural diagram of a first embodiment of a ligation device;

[0055] like Figure 1 The ligation device 1-100 provided in this embodiment specifically includes a first wire body 1-110 and four second wire bodies 1-120, one end of the second wire body 1-120 is formed with a loop 1-121, and the other end is knotted and connected to the first wire body 1-110, and the four second wire bodies 1-120 are arranged along the extension direction of the first wire body 1-110; wherein the loop 1-121 is used for ligating the object to be ligated, when the loop 1-121 of a second wire body 1-120 is completed After the ligation action, a tensile load can be applied to the first wire body 1-110, so that the second wire body 1-120 is in a stretched state through the first wire body 1-110, so as to provide a shear force to the second wire body 1-120, thereby making the second wire body 1-120 detach from the first wire body 1-110, and then the next loop 1-121 is used to perform the ligation action until the four second wire bodies 1-120 are detached from the first wire body 1-110, thereby completing four consecutive ligation actions.

[0056] Furthermore, in order to achieve the ligation of soft tissue or the ligation of the closing object, the second wire body 1-120 of the ligation device 1-100 is specifically an elastic wire, and the aperture size of the loop 1-121 is adjustable. Specifically, the loop 1-121 is formed by knotting the elastic wire itself, and the aperture is adjustable through a slipknot. The tightening action of the loop 1-121 can be achieved by applying tension to the first wire body 1-110.

[0057] In another embodiment of the ligation device, the ring may be a rubber ring, and the elasticity of the rubber ring itself may be used to adjust the aperture size, and the elasticity of the rubber ring itself may be used to achieve a tightening action.

[0058] Furthermore, in the present ligation device 1-100, the tensile shear strength of the second wire body 1-120 is set to be twice that of the tensile shear strength of the first wire body 1-110, so that the shear force can come from the first wire body 1-110. Specifically, a tensile load is provided to the first wire body 1-110, so that part of the tensile force of the first wire body 1-110 is converted into shear force acting on the second wire body 1-120, so that the second wire body 1-120 breaks, thereby completing the action of detaching from the first wire body 1-110; based on this, under this tensile strength, the applicant conducted an experiment of ligation action on simulated soft tissue and found that the action of detaching the second wire body 1-120 from the first wire body 1-110 can be achieved relatively stably.

[0059] In another embodiment of the ligation device, the tensile shear strength of the second thread body is set to be 1.1 times that of the first thread body. It is found that the second thread body is difficult to separate from the first thread body, and the elastic properties of the second thread body are damaged to a certain extent after separation.

[0060] In another embodiment of the ligation device, the tensile shear strength of the second wire body is 1.5 times that of the first wire body, so that the second wire body can be detached, but the operator has more effort;

[0061] In another embodiment of the ligation device, the tensile shear strength of the second wire body is set to be 6 times that of the first wire body, so that the second wire body can be stably detached.

[0062] In another embodiment of the ligation device, the tensile shear strength of the second wire body is set to be 10 times that of the first wire body, so that the stable detachment of the second wire body can be achieved.

[0063] Furthermore, the ligation device 1-100 is specifically used in scenarios where continuous ligation is required. Therefore, when the ligation device 1-100 is used in the medical field, it can be any one of a polyp coiler, a tonsil device, an endoscopic ligation device, and anorectal ligation stapler, that is, it can be used to achieve continuous ligation of soft tissue in a relatively narrow space.

[0064] Based on the above, the ligation device 1-100 only needs to apply continuous tensile load to the first wire body 1-110 to realize the tightening action of the loop 1-121, the straightening action of the second wire body 1-120, and the breaking action of the second wire body 1-120 and the first wire body 1-110, and repeating the above three actions can realize continuous ligation action, which can be applied to various soft tissue ligation instruments in clinical practice, which will significantly reduce the execution difficulty and significantly improve the execution efficiency; in addition, the ligation device 1-100 can also be used in other fields, such as continuous ligation of closing objects in a narrow space, wherein in order to facilitate the delivery of the second wire body 1-120 into the narrow space, the loop 1-121 can be sequentially sleeved on the outer wall of the pipe, the first wire body 1-110 is placed in the pipe, extended at the other end of the pipe, the second wire body 1-120 is delivered through the pipe, and the first wire body 1-110 is operated at the other end of the pipe.

[0065] The present invention also provides a second embodiment of the ligation device, comprising Figure 2 FIG. 2 is a schematic diagram of the structure of the second embodiment of the ligation device; Figure 2 , in this embodiment:

[0066] The ligation device 2-100 corresponds to the ligation device 1-100 in the first embodiment;

[0067] The first line body 2-110 corresponds to the first line body 1-110 in the first embodiment;

[0068] The second line body 2-120 corresponds to the second line body 1-120 in the first embodiment;

[0069] The ring sleeve 2-121 corresponds to the ring sleeve 1-121 in the first embodiment;

[0070] The difference between this embodiment and the ligation device 1-100 in the first embodiment is that the tensile shear strength of the first wire body 2-110 and the second wire body 2-120 is not specifically limited. Figure 2 The ligation device 2-100 includes a tool 2-130 for applying a shearing force to the second thread body 2-120. When the shearing force is provided by the tool 2-130, in clinical applications, the length of the second thread body 2-120 retained in the body can be shortened as much as possible, which is beneficial for later discharge and reduces the pain of the patient.

[0071] The present invention also provides a first embodiment of an anorectal ligation stapler, comprising Figure 3 , which is a front view of the anorectal ligation stapler;

[0072] This embodiment includes a ligation device 1-100;

[0073] Further, such as Figures 3 to 5In order to facilitate the smooth placement of the ring 1-121 of the second line body 1-120 at the hemorrhoids, the anorectal ligation stapler also includes a support member 1-200. Specifically, the support member includes a shell 1-210. In the present embodiment, the shell 1-210 is specifically a pipe. The ligation device 1-100 is placed in the shell 1-210. The ring 1-121 can approach the hemorrhoids by passing through the shell 1-210.

[0074] Further, in order to facilitate the wearing of the ring 1-121 on the hemorrhoids, as Figures 4-5 The anorectal ligation stapler also includes a wire body support 1-300 and a negative pressure assembly 1-400. The wire body support 1-300 includes a pipe 1-310 connected to the housing 1-210, and a through hole 1-311 opened on the pipe 1-310. The ring sleeve 1-121 at one end of the four second wire bodies 1-120 is sleeved on the outer wall of the pipe 1-310, and the other end passes through the through hole 1-311 and is connected to the first wire body 2-110; the negative pressure assembly 1-400 includes a negative pressure tube 1-410, one end of the negative pressure tube 1-410 is connected to the pipe 1-31 0 is connected to one end away from the ring sleeve 1-121, and the other end is used to connect to a negative pressure machine for providing negative pressure. When negative pressure is provided, the hemorrhoids are attracted into the end of the tube 1-310 under the action of the negative pressure, and then a pulling force is applied to one end of the first wire body 1-110. The ring sleeve 1-121 of the second wire body 1-120 will be separated from the tube 1-310 and put on the hemorrhoids under the action of the pulling force. Therefore, the present anorectal ligation stapler does not need to set an additional structure to make the ring sleeve 1-121 separate from the tube 1-310, and it only needs to provide a tensile load to the first wire body 1-110.

[0075] Further, such as Figure 6 In order to avoid mutual interference between the four second wire bodies 1-120, four through holes 1-311 are set. The four through holes 1-311 are set one by one corresponding to the four second wire bodies 1-120. At the same time, the opening direction of the through holes 1-311 is in the same direction as the axial direction of the pipe 1-310.

[0076] Furthermore, since the four second wire bodies 1-120 are all sleeved on the pipe 1-310, if they are arranged in disorder, the second wire body 1-120 that is first subjected to the tension of the first wire body 1-110 may be pressed by the second wire body 1-120 that is subjected to the tension later, resulting in the first ring 1-121 being unable to detach from the pipe 1-310. Therefore, the ring 1-121 of the second wire body 1-120 that is first subjected to the tension must be located at the top of all the rings 1-1 21 is the outermost layer, and the remaining ring sleeves 1-121 are arranged in sequence from the outer layer to the inner layer. Based on this, in this embodiment, the ring sleeves 1-121 of the four second wire bodies 1-120 are sequentially inserted into the pipe 1-121, and the second wire body 1-120 closest to the force-applying end of the first wire body 2-110, its ring sleeve 1-121 is finally inserted into the pipe 1-310, that is, the ring sleeve 1-121 is located in the outermost layer of all the ring sleeves 1-121.

[0077] Furthermore, when the four second wire bodies 1-120 are detached from the tube 1-310, they may interfere with each other in the axial direction of the tube 1-310. Therefore, the ring 1-121 closest to the hemorrhoids needs to be detached first. Based on this, in the present embodiment, the four rings 1-121 are arranged along the extension direction of the tube 1-310, and the ring 1-121 that is last inserted into the tube 1-310 is closest to the end of the tube 1-310 away from the shell 1-210, that is, the ring 1-121 that is first subjected to force is closest to the hemorrhoids and detaches from the tube 1-310 first, thereby completely avoiding interference between the four second wire bodies 1-120.

[0078] Further, such as Figures 3 to 5 The support member 1-200 also includes a handle 1-220, and the handle 1-220 is connected to the shell 1-210 at one end away from the wire support 1-300, so as to facilitate manual grasping 2 to operate the anorectal ligation stapler.

[0079] Furthermore, it can be seen from the above introduction that a tensile load needs to be applied to the second wire body 1-120. Based on this, Figures 4-5The anorectal ligation stapler also includes a firing assembly 1-500. Specifically, the firing assembly 1-500 includes a wire winding drum 1-510, which is rotatably connected to the handle 1-220, and the first wire body 1-110 is wound on the wire winding drum 1-510, and its force-applying end is connected to the wire winding drum 1-510; it also includes a gear 1-520, and the gear 1-520 is connected to the wire winding drum 1-510; it also includes a firing rod 1-530, and the firing rod 1-530 is rotatably connected to the handle 1-220 through a pin, and a reset torsion spring 1-5 80 abutment, and also includes a fan-shaped gear 1-540, which is fixedly connected to or integrally formed with the firing rod 1-530, and meshes with the gear 1-520. When a force is applied to the firing rod 1-530 located outside the handle 1-220, the fan-shaped gear 1-540, the gear 1-520, and the winding disk connection 1-510 can be driven to rotate in sequence, so that the first wire body 1-110 is wound around the winding disk 1-510, which is equivalent to applying a pulling force to the first wire body 1-110.

[0080] Furthermore, a continuous tensile load needs to be applied to the second wire body 1-120 to achieve a continuous tying effect, that is, the winding drum 1-510 can only rotate in the same direction. Figure 5 The firing assembly 1-500 also includes a shaft 1-550, which is fixedly connected to the winding reel 1-510 and rotatably connected to the handle 1-220; a one-way bearing 1-560, a gear 1-520 is sleeved on the shaft 1-550 and connected to the shaft 1-550 through the one-way bearing 1-560; and a stopper 1-570, which is connected to the handle 1-220 and meshes with the one-way teeth 1-511 provided on the winding reel 1-510 to enable the winding reel 1-5 10 One-way rotation; specifically, after completing a tying action and disengaging from a second wire body 1-120, the force applied to the firing rod 1-530 is canceled, and the firing rod 1-530 is reset with the assistance of the reset torsion spring 1-580 and the one-way bearing 1-560. The winding drum 1-510 stops rotating under the limiting action of the one-way teeth 1-511 and the blocking teeth 1-570, and then continues to apply force to the firing rod 1-530 to enter the next cycle. The winding drum 1-510 continues to rotate, and the first wire body 1-110 is subjected to continuous pulling force in the same direction.

[0081] Further, after completing a ligation action and detaching from a second line body 1-120, it is necessary to release the suction of the negative pressure on the hemorrhoids and then find the next hemorrhoid. Based on this, Figure 5A negative pressure tube 1-410 is provided to extend through the shell 1-210 and the handle 1-220 in sequence. The negative pressure assembly 1-400 also includes a three-way tube 1-420. The three-way tube 1-420 is arranged in the handle 1-220, and its first end and second end are connected to the negative pressure tube handle 1-220; it also includes a negative pressure switch 1-430. The negative pressure switch 1-430 is rotatably connected to the handle 1-220, and a plug 1-431 is provided at one end to close the third end of the three-way tube 1-430; when it is necessary to release the suction of the negative pressure, the negative pressure switch 1-430 is pressed to disengage the plug 1-431 from the third end of the three-way tube 1-430, and the third end of the three-way tube 1-430 is opened, and the negative pressure disappears. When entering the next ligation action, the negative pressure switch 1-430 is pressed again to close the third end of the three-way tube 1-430.

[0082] The present invention also provides a second embodiment of an anorectal ligation stapler, comprising Figure 7 As shown, it is a front view of the anorectal ligation stapler; Figures 7-10 , in this embodiment:

[0083] The support member 2-200, the housing 2-210, and the handle 2-220 correspond to the support member 1-200, the housing 1-210, and the handle 1-220 in the first embodiment, respectively;

[0084] The wire support 2-300, the pipe 2-310, and the through hole 2-311 correspond to the wire support 1-300, the pipe 1-310, and the through hole 1-311 in the first embodiment respectively;

[0085] The negative pressure assembly 2-400, the negative pressure tube 2-410, the three-way tube 2-420, the negative pressure switch 2-430, and the plug 2-431 correspond to the negative pressure assembly 1-400, the negative pressure tube 1-410, the three-way tube 1-420, the negative pressure switch 1-430, and the plug 1-431 in the first embodiment respectively;

[0086] The firing assembly 2-500, the winding reel 2-510, the one-way teeth 2-511, the gear 2-520, the firing rod 2-530, the sector gear 2-540, the shaft 2-550, the one-way bearing 2-560, and the stop gear 2-570 correspond to the firing assembly 1-500, the winding reel 1-510, the one-way teeth 1-511, the gear 1-520, the firing rod 1-530, the sector gear 1-540, the shaft 1-550, the one-way bearing 1-560, and the stop gear 1-570 in the first embodiment, respectively;

[0087] The difference between the anorectal ligation stapler in this embodiment and the first embodiment is that:

[0088] The ligation device 1-100 in the first embodiment is replaced by a ligation device 2-100;

[0089] Further, in order to achieve control of the tool 2-130, such as Figures 8-9 The anorectal ligation stapler also includes a cutting assembly 2-600, which specifically includes a knife seat 2-610, wherein the knife seat 610 is rotatably connected to the housing 2-210 through an arc groove and a pin, and the cutter 2-130 is mounted on the knife seat 2-610, forming a 90-degree angle with the second wire body 2-120, so as to facilitate cutting the second wire body 2-120 in a straight state, and a curved groove 2-611 is also provided on the knife seat 2-610; It includes a firing button 2-620, which is arranged on the handle 2-220; it also includes a connecting rod 2-630, one end of the connecting rod 2-630 is connected to the firing button 2-630, and the other end is hung in the curved groove 2-611; when force is applied to the firing button connecting rod 2-630, the knife seat 2-610 is driven to rotate through the action of the connecting rod 2-630 and the curved groove 2-611, so that the knife 2-130 provides a shear force to the second wire body 2-120.

[0090] Furthermore, in order to reset the knife 2-130 and thus continuously provide shearing force, the cutting assembly 2-600 also includes an elastic member 2-640, which is specifically a spring. One end of the elastic member 2-640 abuts against the end of the firing button 2-620 and extends into the firing button 2-620 to prevent the firing button 2-620 from falling, and the other end abuts against the handle 2-220. After the firing button 2-620 completes a firing, the elastic member 2-640 is used to provide a reset elastic force to the firing button 2-620.

[0091] The present invention also provides a first embodiment of a ligation method, which uses a first embodiment of a ligation device to achieve continuous ligation of a closed object in a narrow space, and specifically includes the following steps:

[0092] S1. The loop 1-121 of the second wire 1-120 closest to one end of the first wire 1-110 is disposed on the object to be ligated, and a tensile load is applied to the other end of the first wire 1-110 to tighten the loop 1-121 of the second wire 1-120;

[0093] S2. Then apply a tensile load to the other end of the first wire body 1-110, driving the second wire body 1-120 in a straight state;

[0094] S3. Applying a tensile load to the first wire body 1-110, the first wire body 1-110 provides a shear force to separate the second wire body 1-120 from the first wire body 1-110;

[0095] S4. Repeat steps S1 to S3 multiple times to allow multiple second wire bodies 1-120 to be separated from the first wire body 1-110 in sequence.

[0096] The present invention also provides a second embodiment of the ligation method, which uses the second embodiment of the ligation device to achieve continuous ligation of the closed object in a narrow space, and specifically includes the steps of:

[0097] S1. The loop 2-121 of the second wire body 2-120 closest to one end of the first wire body 2-110 is disposed on the object to be ligated, and a tensile load is applied to the other end of the first wire body 2-110 to tighten the loop 2-121 of the second wire body 2-120;

[0098] S2. Then apply a tensile load to the other end of the first wire body 2-110, driving the second wire body 2-120 in a straight state;

[0099] S3. The cutter 2-130 provides a shearing force to separate the second wire body 2-120 from the first wire body 2-110;

[0100] S4. Repeat steps S1 to S3 multiple times to allow multiple second wire bodies 2-120 to be separated from the first wire body 2-110 in sequence.

[0101] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0102] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anorectal ligation stapler, characterized in that: include: First line body; and a plurality of second wire bodies, one end of the second wire body is formed with a loop, the other end of the second wire body is connected to the first wire body, and the plurality of second wire bodies are arranged along the extension direction of the first wire body; The second wire body is an elastic wire, and the aperture size of the loop is adjustable, and further comprises: a shell; wherein the loop is used for tying an object to be tyed, and when the loop of a second wire body completes the tying action, a tensile load can be applied to the first wire body, so that the second wire body is in a straightened state through the first wire body, so as to provide a shear force to the second wire body, so that the second wire body is separated from the first wire body, and then the next loop is used to perform the tying action, until multiple second wire bodies are separated from the first wire body, and multiple continuous tying actions can be completed; and a wire support, wherein the wire support includes a pipe connected to the shell, and a through hole opened on the pipe, a plurality of loops at one end of the second wire are sleeved on the outer wall of the pipe, and the other end passes through the through hole and is connected to the first wire, and when a pulling force is applied to one end of the first wire, the loop of the second wire is separated from the pipe under the action of the pulling force; specifically, the loop is formed by knotting the elastic wire itself, and the aperture is adjustable through a slipknot, and the tightening action of the loop can be achieved by applying a pulling force to the first wire; and a negative pressure tube, one end of which is connected to an end of the pipe far away from the ring sleeve, and the other end is used to connect to a negative pressure machine, the ring sleeves of the plurality of second wire bodies are sequentially sleeved on the pipe, and the ring sleeve of the second wire body closest to the force-applying end of the first wire body is sleeved on the pipe last, the plurality of ring sleeves are arranged along the extension direction of the pipe, and the ring sleeve sleeved on the pipe last is closest to the end of the pipe far away from the shell, and also includes: a handle, the handle is connected to the end of the shell far away from the support of the wire body; and a wire winding drum, the wire winding drum is rotatably connected to the handle, the first wire body is wound around the wire winding drum, and the force-applying end thereof is connected to the wire winding drum; and a gear connected to the winding drum; and a firing rod, the firing rod being rotatably connected to the handle; and a sector gear connected to the firing rod and meshing with the gear, and further comprising: a shaft body fixedly connected to the winding disk and rotatably connected to the handle; and a one-way bearing, wherein the gear is sleeved on the shaft and connected to the shaft through the one-way bearing; and a stopper tooth, the stopper tooth being connected to the handle and meshing with the one-way teeth arranged on the winding disk to make the winding disk rotate in one direction, the negative pressure tube extending to pass through the shell and the handle in sequence, the stapler further comprising: a three-way tube, the three-way tube being arranged in the handle, the first end and the second end of which are both connected to the negative pressure tube; and a negative pressure switch, wherein the negative pressure switch is rotatably connected to the handle and one end of the negative pressure switch is provided with a plug to seal the third end of the three-way pipe, comprising the steps of: S1. Place the loop of the second wire body closest to one end of the first wire body on the object to be ligated; S2. Apply a tensile load to the other end of the first wire body to drive the second wire body into a straight state; S3. Applying a tensile load to the first wire body, and providing a shear force by the first wire body to separate the second wire body from the first wire body; Also includes the steps: S4. Repeat steps S1 to S3 multiple times to make the second wire bodies detach from the first wire body in sequence; The step S1 further comprises applying a tensile load to the first wire body to tighten the loop of the second wire body; Only by applying continuous tensile load to the first wire body, the ring can be tightened, the second wire can be straightened, and the second wire and the first wire can be broken. Repeating the above three actions can achieve continuous ligation.

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