Multi-continuous-shooting anorectum loop ligature device

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a multi-continuous-shooting anorectum loop ligature device which comprises a shell, a negative pressure device, a take-up mechanism and a line switching mechanism are arranged in the shell, the shell is connected with a line breaking mechanism, the front end of the line breaking mechanism is connected with a loop ligature head, and the outer surface of the loop ligature head is used for being sleeved with an elastic line knot. A loop ligature cavity used for containing focus tissue is formed in the loop ligature head and communicated with a negative pressure device, the negative pressure device is used for enabling the loop ligature cavity to form negative pressure, two or more threading holes allowing elastic threads to penetrate through are formed in the loop ligature head, and one end of each threading hole is opened in the front end face of the loop ligature head. More than two elastic threads can penetrate through the loop ligature head, after loop ligature of one focus tissue is completed, the multiple elastic threads can be continuously replaced, loop ligature operation can be conducted on multiple focus tissues under the condition that the loop ligature device is not replaced, consumption of medical instruments is reduced, and medical cost is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a multi-shot anorectal ligation device. Background Art

[0002] Anorectal ligation is an important medical device used to treat diseases such as hemorrhoids. The main working principle of anorectal ligation is to form a tight ring ligation on the lesion tissue through the ligation head to block the blood flow of the lesion tissue, causing it to necrotize and eventually fall off. The advantages of using this device for surgery are simple operation and low chance of complications.

[0003] A variety of solutions for anorectal ligation devices have been disclosed in the prior art. For example, the invention patent with authorization announcement number CN112971927B discloses an elastic wire automatic controlled ligation device, including a main body, a suction tube, an elastic wire, a ring sleeve and a tightening device; the suction tube is arranged on the main body, one end of the elastic wire is arranged as a ring sleeve, the ring sleeve is arranged at the front end of the suction tube, the other end of the elastic wire is arranged on the tightening device, the tightening device is arranged on the main body, the tightening device is used to wind the elastic wire and tighten the ring sleeve, the ring sleeve is provided with a slipknot, the slipknot is against the force point, and is tightened toward the center of the ring sleeve under the pulling action of the elastic wire, so as to be suitable for controlling the ligation effect of the ring sleeve on hemorrhoids.

[0004] The elastic wire automatic control ligation device provided by the invention is provided with a tightening device on the ligation device body, and the winding shaft is driven by a motor to tighten the elastic wire loop. At the same time, the tightening device obtains the tension of the elastic wire through a pressure sensor until a preset tension threshold is reached. By controlling the tension, the degree of ligation of the hemorrhoids by the loop is determined to prevent the loop from loosening and falling off. The device has a simple structure and is easy to operate. However, the hemorrhoid ligation device is a disposable product, and only one elastic wire is provided. After the ligation of a lesion tissue is completed, it cannot be used again. Moreover, if the patient has multiple lesions that need to be ligated, multiple ligation devices need to be replaced, which is cumbersome to operate and consumes a lot of medical equipment. Therefore, it is necessary to improve the existing technology. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-shot anorectal ligation device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention is: A multi-shot anorectal ligation device comprises a shell, a negative pressure device, a wire collection mechanism and a wire switching mechanism are arranged in the shell, the shell is connected to a wire breaking mechanism, the front end of the wire breaking mechanism is connected to a ligation head, the outer surface of the ligation head is used to set an elastic wire knot, the ligation head is provided with a ligation cavity for accommodating lesion tissue, the ligation cavity is connected to the negative pressure device, the negative pressure device is used to form a negative pressure in the ligation cavity, the ligation head is provided with more than two threading holes for the elastic wire to pass through, and one end of the threading hole is opened on the front end surface of the ligation head; The wire-winding mechanism is used to tighten the elastic wire, the wire-breaking mechanism is used to cut off the tightened elastic wire, and the wire-switching mechanism is used to switch the elastic wire.

[0007] As a further improvement, the line switching mechanism includes a line hanging mounting plate slidably mounted on the shell, the line hanging mounting plate is connected to the third driving mechanism, and more than two line hanging parts are provided on the line hanging mounting plate. The line taking-up mechanism is located below the line hanging parts and cooperates with the line hanging parts.

[0008] As a further improvement, the wire taking-up mechanism includes a wire winding roller rotatably mounted on the inner wall of the shell, the wire winding roller is connected to a second driving mechanism, the wire winding roller is provided with a wire winding groove, a wire hooking member is provided in the wire winding groove, and the wire hooking member is located below the wire hanging member and cooperates with the wire hanging member.

[0009] As a further improvement, the wire breaking mechanism includes a connecting tube fixedly connected to the shell, the connecting tube is connected to the sleeve head, a rotating part is rotatably installed in the connecting tube, a cutter is connected to one end of the rotating part close to the sleeve head, and the other end of the rotating part is connected to the first driving mechanism, and the cutter cooperates with the threading hole.

[0010] As a further improvement, the threading hole passes through the side wall of the tying head from the front end to the rear end of the tying head, one end of the threading hole opens to the inside of the connecting tube, the outer part of the rear end surface of the tying head is provided with a rotary cut surface, the threading hole opens on the rotary cut surface, and the cutter slidably cooperates with the rotary cut surface.

[0011] As a further improvement, the cutter comprises a blade and a blade holder, one end of the blade holder is fixedly connected to the end wall of the rotating member, and the other end of the blade holder is fixedly connected to the blade; The blade is provided with a first end face and a second end face, the first end face is parallel to the rotary cutting surface and abuts against the rotary cutting surface, the second end face is fixedly connected to the tool holder, the first end face and the second end face intersect to form a blade, and the blade is slidably matched with the rotary cutting surface.

[0012] As a further improvement, the negative pressure device comprises a negative pressure tube, one end of which is connected to the ligation cavity of the ligation head; The negative pressure device also includes a pressure relief switch, which includes an adapter, which is fixed on the inner wall of the shell, and the adapter includes a main air duct and a bronchial duct connected to the main air duct. One end of the main air duct is connected to the negative pressure mechanism through the trachea, and the other end is connected to the other end of the negative pressure pipe through the trachea. A sealing plug is provided at the pipe mouth of the bronchial duct, and the sealing plug is connected to a fourth driving mechanism.

[0013] As a further improvement, the fourth driving mechanism includes a rotating rod, the middle part of which is rotatably connected to the inner side wall of the shell, one end of which is fixedly connected to the sealing plug, and the other end of which is perpendicular to its rotation plane and protrudes downward to form a connecting shaft, and the connecting shaft is connected to a pressure relief button; The pressure relief button includes a rod body, one end of the rod body passes through the shell and is located outside the shell, the other end of the rod body is provided with an elliptical first slot hole, the length extension direction of the first slot hole is perpendicular to the axial direction of the rod body, the connecting shaft is slidably matched with the first slot hole, a stopper is fixedly provided on the side wall of the rod body, the end face of the stopper is abutted against the inner wall of the shell, a baffle is fixedly provided on the inner wall of the shell, the rod body passes through the baffle, and a spring is connected between the baffle and the stopper.

[0014] As a further improvement, an elastic line is passed through each threading hole of the tying head, one end of the elastic line is provided with a tying knot, the tying knot is sleeved on the outer surface of the tying head, the other end of the elastic line is provided with a hanging line knot, the hanging line knot is hung on the hanging line piece, and the elastic line passes through the threading hole and is connected to the switching line mechanism.

[0015] The present invention also provides a method for using the multi-shot anorectal ligation device. The method comprises: Hang the hanging rope knot at one end of the elastic line on the hanging piece of the line switching mechanism, pass the other end of the elastic line through the threading hole and put the tying rope knot on the outer surface of the tying head; Control the operation of the negative pressure device to make the set negative pressure value reach inside the tying head and pipeline; Control the line switching mechanism to move the line hanging part of the line switching mechanism to the line hooking position. Control the operation of the line-retrieving mechanism so that the line-hooking member hooks the tying knot on the line-hanging member and continues to reel in the line; During the process of winding, the degree of tightening of the elastic line is monitored. When the elastic line reaches the set degree of tightening, the line breaking mechanism is controlled to operate to cut off the elastic line. Control the negative pressure device to stop running and open the pressure relief switch; Move the ligature head to other lesion locations and repeat the above steps.

[0016] Due to the adoption of the above technical solution, the beneficial technical effects of the present invention are: The invention provides a multi-shot anorectal ligation device, wherein the ligation head is provided with more than two threading holes, through which more than two elastic wires can be threaded. When in use, the ligation head is brought close to the lesion tissue, the negative pressure device is operated, so that negative pressure is formed in the ligation cavity of the ligation head, the lesion tissue is sucked in, and then the elastic wire is tightened by the wire-retracting mechanism, the ligation rope knot of the elastic wire slides off the outer surface of the ligation head and is ligated on the lesion tissue. As the elastic wire is further tightened, the ligation rope knot is tightened on the lesion tissue, and then the elastic wire is cut off by the wire-breaking mechanism, and the ligation operation on one lesion tissue is completed. At this time, the negative pressure device is controlled to restore the ligation cavity of the ligation head to normal pressure, the ligation head is detached from the lesion tissue after the ligation is completed, the ligation head is moved to make it close to other lesion tissues that need to be ligated, the new elastic wire is connected to the wire-retracting mechanism by the wire-switching mechanism, and then the negative pressure device is operated, and the above steps are repeated to perform the ligation operation, so that the ligation operation of multiple lesion tissues can be achieved without changing the anorectal ligation device.

[0017] The anorectal ligation device used in the prior art is only provided with one elastic line, which can only ligature one lesion tissue. If there are other lesion tissues, a new anorectal ligation device needs to be replaced. The present application can provide more than two elastic lines. Compared with the prior art, the elastic lines can be continuously replaced without replacing the ligation device, and ligation operations can be performed on multiple lesion tissues, thereby reducing the consumption of medical equipment and saving medical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the external structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic structural diagram of the negative pressure device of the present invention; Figure 4 It is a structural schematic diagram of the pressure relief switch of the present invention; Figure 5 It is a structural schematic diagram of the rotating rod of the present invention; Figure 6 It is a structural schematic diagram of the pressure relief button of the present invention; Figure 7 It is a structural schematic diagram of the wire take-up mechanism of the present invention; Figure 8 It is a structural schematic diagram of the wire breaking mechanism of the present invention; Fig. 9 It is a schematic diagram of the assembly of the tying head and the cutter of the present invention; Fig.10It is a schematic diagram of assembling the elastic thread snap button and the tying head of the present invention; Fig.11 It is a schematic diagram of the structure of the cutter of the present invention; Fig.12 It is a structural schematic diagram of the switching line mechanism of the present invention; Fig.13 It is a structural schematic diagram of the line hooking member and the line hanging member of the present invention.

[0019] Wherein: 1-shell, 101-baffle, 2-negative pressure device, 201-negative pressure tube, 202-negative pressure mechanism, 203-sleeve head, 2031-suction end, 2032-connection end, 2033-sleeve cavity, 2034-threading hole, 2035-rotary cutting surface, 3-receiving mechanism, 301-winding roller, 3011-winding groove, 302-hook wire member, 4-switching wire mechanism, 401-hanging wire installation plate, 402-hanging wire member, 4021-first notch, 5-breaking wire mechanism, 501-rotating member, 502-connecting tube, 503-cutter, 5031-blade, 50311-first end face, 50312-second end face, 5032-knife holder, 6-second driving mechanism, 601 -first bevel gear, 602-second motor, 603-second bevel gear, 7-elastic line, 701-hanging line knot, 702-tying knot, 8-first driving mechanism, 801-first motor, 802-first gear, 803-second gear, 9-pressure relief switch, 901-adapter, 9011-main air duct, 9012-bronchial duct, 902-sealing plug, 903-fourth driving mechanism, 9031-rotating rod, 9032-connecting shaft, 9033-pressure relief button, 90331-rod body, 90332-first slot, 9034-block, 9035-spring, 10-third driving mechanism, 1001-rack, 1002-third motor, 1003-third gear. DETAILED DESCRIPTION

[0020] The technical scheme of the present invention will be clearly and completely described below in conjunction with specific embodiments, but it will be appreciated by those skilled in the art that the following described embodiments are part of embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work, all belong to the scope of protection of the present invention. If specific conditions are not indicated in the embodiments, they are carried out according to normal conditions or conditions recommended by the manufacturer. If the manufacturer is not indicated in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0021] like Figure 1-13As shown, a multi-shot anorectal ligation device includes a shell 1, a negative pressure device 2, a wire collection mechanism 3 and a wire switching mechanism 4 are arranged in the shell 1, the shell 1 is connected to the wire breaking mechanism 5, the front end of the wire breaking mechanism 5 is connected to the ligation head 203, the outer surface of the ligation head 203 is used to set the elastic line knot, specifically, one end of the elastic line 7 is provided with a ligation knot 702, and the other end is provided with a hanging line knot 701, the ligation knot 702 is set on the outer surface of the ligation head 203, and the ligation head 203 is provided with a ligation knot 702 for accommodating the lesion. The ligation head 203 is a ligation cavity 2033 for accommodating the tissue, specifically, the front end of the ligation head 203 is a suction end 2031, and the other end is a connection end 2032. The end surface of the suction end 2031 is provided with a ligation cavity 2033 for accommodating the lesion tissue, the ligation cavity 2033 is connected to the negative pressure device 2, and the negative pressure device 2 is used to form a negative pressure in the ligation cavity 2033. The ligation head 203 is provided with more than two threading holes 2034 for the elastic wire 7 to pass through, and one end of the threading hole 2034 is opened on the suction end surface of the ligation head 203; The wire-winding mechanism 3 is used for tightening the elastic wire 7 , the wire-breaking mechanism 5 is used for cutting off the tightened elastic wire 7 , and the wire-switching mechanism 4 is used for switching the elastic wire 7 .

[0022] The ligature head 203 of the present embodiment is provided with more than two threading holes 2034, through which more than two elastic lines 7 can be threaded. The ligature knot 702 of the elastic line 7 is sleeved on the outer surface of the ligature head 203. When in use, the ligature head 203 is brought close to the lesion tissue, and the negative pressure device 2 is operated to form a negative pressure in the ligature cavity 2033 of the ligature head 203. The ligature head 203 is brought close to and sucks the lesion tissue in. Then, the elastic line 7 is tightened by the take-up mechanism 3, and the ligature knot 702 of the elastic line 7 slides off the outer surface of the ligature head 203 and is sleeved on the lesion tissue. As the elastic line 7 is further tightened, the ligature knot 702 is 702 is tightened on the lesion tissue, and then the elastic line 7 is cut off by the wire breaking mechanism 5 to complete the ligation operation on one lesion tissue. At this time, the negative pressure device 2 is controlled to restore the ligation cavity 2033 of the ligation head 203 to normal pressure, and the ligation head 203 is detached from the lesion tissue after the ligation is completed. The ligation head 203 is moved to make it close to other lesion tissues that need to be ligated, and the new elastic line 7 is connected to the wire taking-up mechanism 3 by switching the wire mechanism 4, and then the negative pressure device 2 is operated, and the above steps are repeated to perform the ligation operation. The ligation operation of multiple lesions can be achieved without changing the anorectal ligation device.

[0023] In this embodiment, the switching line mechanism 4 includes a line hanging installation plate 401 slidably installed on the shell 1, the line hanging installation plate 401 is connected to the third driving mechanism 10, and more than two line hanging parts 402 are provided on the line hanging installation plate 401. The number of line hanging parts 402 corresponds to the number of elastic lines 7 and the number of threading holes 2034. The line taking-up mechanism 3 is located below the line hanging part 402 and cooperates with the line hanging part 402.

[0024] Specifically, a sliding groove is provided on the inner wall of the housing 1, the wire hanging installation plate 401 is connected to the rack 1001, the rack 1001 slides in the sliding groove, and the third driving mechanism 10 includes a third motor 1002 fixedly mounted on the housing 1, the third motor 1002 is connected to the third gear 1003, and the third gear 1003 is meshed with the rack 1001. The third motor 1002 drives the third gear 1003 to rotate, and the third gear 1003 drives the rack 1001 and the wire hanging installation plate 401 to move along the sliding groove.

[0025] In this embodiment, the wire taking-up mechanism 3 includes a wire winding roller 301 rotatably mounted on the inner wall of the shell 1, the wire winding roller 301 is connected to the second driving mechanism 6, the wire winding roller 301 is provided with a wire winding groove, and the wire winding groove is provided with a wire hooking member 302, the wire hooking member 302 is located below the wire hanging member 402 and cooperates with the wire hanging member 402.

[0026] One side of the wire hanging installation plate 401 is fixedly connected to the rack 1001, and the wire hanging member 402 is fixedly arranged at the bottom position of the other side of the wire hanging installation plate 401. The wire hanging member 402 is arranged vertically and arranged at intervals in front and back. The wire hanging member 402 and the wire hook member 302 both include a rod and a hook. The bottom of the rod of the wire hanging member 402 is provided with a first notch 4021 through the front and back, and the bottom of the rod of the wire hanging member 402 is located on both sides of the first notch 4021 and extends backward to provide hooks. The top of the rod of the wire hook member 302 is connected with a hook extending backward, and the top of the hook of the wire hook member 302 is lower than the top of the wire hanging member 402 and higher than the bottom of the wire hanging member 402, so that the wire hook member 302 of the wire hook member 302 can pass through the first notch 4021, and the width of the first notch 4021 gradually decreases from the bottom to the top, which is convenient for hooking.

[0027] When in use, one end of the elastic line 7 is knotted to form a hanging line knot 701 and is hooked by the hook line member 302, and the other end of the elastic line 7 is knotted to form a tying knot 702 which is sleeved on the outer surface of the tying head 203, and the third motor 1002 is controlled to drive the third gear 1003 to rotate, thereby driving the gear rack 1001 meshing with it to move, and further driving the hanging line mounting plate 401 and the hanging line member 402 thereon to move until they move to just above the winding roller 301, and controlling the second driving mechanism 6 to drive the winding roller 301 to rotate so that the hook line member 302 moves, and the hook portion of the hook line member 302 passes through the first notch 4021, so as to hook the hanging line knot 701 on the hook portion of the hook line member 302, and as the winding roller 301 rotates, the hook line member 302 drives the hanging line knot 701 to detach from the hanging line member 402, and as the winding roller 301 continues to rotate, The elastic line 7 is wound around the winding roller 301 circle by circle and gradually tightened until the ligation knot 702 slides off the outer surface of the ligation head 203 and ligates the root of the lesion tissue. As the elastic line 7 continues to be tightened, the ligation knot 702 tied at the root of the lesion tissue is tightened.

[0028] After the elastic line 7 that has been tied is cut off, the third driving mechanism 10 drives the line hanging installation plate 401 to move, so that the line hanging member 402 with the elastic line 7 is matched with the line hooking member 302, and the line hooking member 302 hooks the new elastic line 7 to complete the line switching operation.

[0029] In this embodiment, the second driving mechanism 6 includes a first bevel gear 601 fixedly connected to one end face of the winding roller 301, a second motor 602 is fixedly provided inside the housing 1, a second bevel gear 603 is fixedly connected to the output shaft of the second motor 602, and the first bevel gear 601 is meshed with the second bevel gear 603. The second motor 602 rotates to drive the second bevel gear 603 to rotate, and the second bevel gear 603 drives the first bevel gear 601 and the winding roller 301 to rotate.

[0030] Specifically, a current sensor and a relay are connected to the power line of the second motor 602, and the current sensor and the relay are connected to the controller respectively. The current sensor is used to detect the current passing through the second motor 602, and transmit the detection result to the controller. The controller sends relevant instructions to the relay according to the detection result of the current sensor, and the relay connects or disconnects the connection circuit of the second motor 602 according to the instruction of the controller, thereby realizing the control of the start and stop of the second motor 602.

[0031] Specifically, in the initial stage when the elastic wire 7 is tightened, the current inside the second motor 602 is within the normal value range. As the elastic wire 7 is further tightened, the load of the second motor 602 gradually increases, and the internal current gradually increases. When the elastic wire 7 is tightened to an ideal state, the current inside the second motor 602 also reaches a set value, and the controller sends a stop command to the second motor 602 to stop the second motor 602. The elastic wire 7 is tightened with this force and is sheathed at the root of the lesion tissue.

[0032] In this embodiment, the wire breaking mechanism 5 includes a connecting tube 502 fixedly connected to the shell 1, the connecting tube 502 is connected to the tying head 203, a rotating member 501 is rotatably installed in the connecting tube 502, one end of the rotating member 501 close to the tying head 203 is connected to a cutter 503, the other end of the rotating member 501 is connected to the first driving mechanism 8, and the cutter 503 cooperates with the threading hole 2034.

[0033] In this embodiment, the first driving mechanism 8 includes a first motor 801 fixedly mounted on the housing 1, a first gear 802 is fixedly connected to the output shaft of the first motor 801, a second gear 803 is fixedly sleeved on the outer wall of the rotating member 501 at one end close to the housing 1, and the first gear 802 is meshed with the second gear 803. The first motor 801 rotates to drive the first gear 802 to rotate, and the first gear 802 drives the second gear 803 and the rotating member 501 to rotate.

[0034] Specifically, the rotating member 501 is a metal tube with good rigidity. The rotating member 501 and the cutter 503 are integrally formed. The outer wall of the rotating member 501 rotates with the inner wall of the connecting tube 502. In addition, the elastic line 7 is arranged inside the rotating member 501, which can effectively reduce the external size of the connecting tube 502 and is more flexible to use.

[0035] The rotating member 501 made of metal has good mechanical properties, which prevents the rotating member 501 from bending and deforming during the process of cutting the elastic wire 7. The connecting pipe 502 plays a supporting and connecting role and limits the radial position of the rotating member 501.

[0036] In this embodiment, the threading hole 2034 passes through the side wall of the tying head 203 from the front end to the rear end, and one end of the threading hole 2034 opens to the inside of the connecting tube 502. The outer part of the rear end surface of the tying head 203 is provided with a rotary cut surface 2035, and the threading hole 2034 opens on the rotary cut surface 2035. The cutter 503 slides in cooperation with the rotary cut surface 2035.

[0037] In this embodiment, the cutter 503 includes a blade 5031 and a blade holder 5032, one end of the blade holder 5032 is fixedly connected to the end wall of the rotating member 501, and the other end of the blade holder 5032 is fixedly connected to the blade 5031; The blade 5031 is provided with a first end face 50311 and a second end face 50312. The first end face 50311 is parallel to the rotary cutting surface 2035 and abuts against the rotary cutting surface 2035. The second end face 50312 is fixedly connected to the tool holder 5032. The first end face 50311 and the second end face 50312 intersect to form a blade, and the blade slidably cooperates with the rotary cutting surface 2035.

[0038] The rotary cut surface 2035 serves to limit the axial position of the cutter 503 and provides force support for the cutter 503 to cut the elastic wire 7 .

[0039] In this embodiment, the negative pressure device 2 can use a device that is relatively common in the prior art and can generate a negative pressure environment. No specific limitation is made here, and only one specific structure that can be implemented is described. Specifically, the negative pressure device 2 used in this application includes a negative pressure tube 201, which is arranged inside the rotating member 501, and one end of the negative pressure tube 201 is connected to the negative pressure mechanism 202, and the other end is connected to the ligation cavity 2033 of the ligation head 203.

[0040] Specifically, the operation of the negative pressure mechanism 202 generates negative pressure in the ligation cavity 2033, thereby sucking the lesion tissue into the ligation cavity 2033. The negative pressure mechanism 202 is integrated into the housing 1, and specifically can be a negative pressure mechanism in the prior art such as a negative pressure pump or a vacuum pump, so that the anorectal ligation device can generate negative pressure without the aid of an external vacuum device, and can also avoid complicated and lengthy external pipes interfering with the ligation operation, making the entire device more convenient and flexible to use.

[0041] The negative pressure device 2 also includes a pressure relief switch 9, which includes an adapter 901, which is fixedly arranged on the inner wall of the housing 1, and includes a main gas pipeline 9011 and a bronchial pipeline 9012 connected to the main gas pipeline 9011. One end of the main gas pipeline 9011 is connected to the negative pressure mechanism 202 through the trachea, and the other end is connected to the negative pressure tube 201 through the trachea. A sealing plug 902 is provided at the mouth of the bronchial pipeline 9012, and the sealing plug 902 is connected to the fourth driving mechanism 903. The pressure relief switch 9 is used to eliminate the negative pressure in the ligation cavity 2033 so that the ligation head 203 can be separated from the ligated focus tissue.

[0042] When the elastic line 7 is cut off, the negative pressure mechanism 202 is closed, and the fourth driving mechanism 903 drives the sealing plug 902 to move and separate from the tube mouth of the bronchial duct 9012. The external air enters the ligation cavity 2033 from the bronchial duct 9012. After the negative pressure disappears, the ligation head 203 is separated from the ligated lesion tissue.

[0043] In this embodiment, the fourth driving mechanism 903 includes a rotating rod 9031, the middle part of the rotating rod 9031 is rotatably connected to the inner wall of the housing 1, one end of the rotating rod 9031 is fixedly connected to the sealing plug 902, and the other end of the rotating rod 9031 is perpendicular to its rotation plane and protrudes downward to form a connecting shaft 9032, and the connecting shaft 9032 is connected to a pressure relief button 9033. Figure 4 As shown, the pressure relief button 9033 is pressed to the right, and the pressure relief button 9033 drives the rotating rod 9031 to rotate counterclockwise, thereby driving the sealing plug 902 to separate from the tube opening of the bronchial tube 9012.

[0044] In this embodiment, the pressure relief button 9033 includes a rod body 90331, one end of the rod body 90331 passes through the shell 1 and is located outside the shell 1, and the other end of the rod body 90331 is provided with an elliptical first slot 90332, and the length extension direction of the first slot 90332 is perpendicular to the axial direction of the rod body 90331. The connecting shaft 9032 is slidably matched with the first slot 90332, and a stopper 9034 is fixedly provided on the side wall of the rod body 90331. The end face of the stopper 9034 is against the inner wall of the shell 1, and a baffle 101 is fixedly provided on the inner wall of the shell 1, and the rod body 90331 passes through the baffle 101, and a spring 9035 is connected between the baffle 101 and the stopper 9034.

[0045] The stopper 9034 is used to limit the moving position of the rod body 90331, and on the other hand, the baffle 101 and the stopper 9034 provide force support for the spring 9035. When the pressure relief button 9033 is manually pressed, the pressure relief button 9033 slides to the right as a whole, and the spring 9035 is compressed. After the pressure relief button 9033 is released, the pressure relief button 9033 returns to its original position under the elastic force of the spring 9035.

[0046] The sealing plug 902 is provided with a first chamfer at one end close to the orifice of the bronchial tube 9012, and a second chamfer is provided on the inner wall of the orifice of the bronchial tube 9012, and the first chamfer matches the second chamfer. The sealing plug 902 is made of a soft material, so that the sealing plug 902 and the bronchial tube 9012 are more closely matched to prevent leakage.

[0047] In this embodiment, an elastic line 7 is passed through each threading hole 2034 of the tying head 203, and the tying knot 702 at one end of the elastic line 7 is a slipknot, which is sleeved on the outer surface of the tying head 203, and the hanging line knot 701 at the other end of the elastic line 7 is hung on the hanging line member 402, and the elastic line 7 passes through the threading hole 2034 and is connected to the switching line mechanism 4.

[0048] The present invention also provides a method for using the multi-shot anorectal ligation device. The method for using the multi-shot anorectal ligation device includes: The hanging rope knot 701 at one end of the elastic line 7 is hung on the hanging rope member 402 of the switching line mechanism 4, and the other end of the elastic line 7 is passed through the gap between the negative pressure tube 201 and the rotating member 501 and the threading hole 2034 in sequence, and then the tying rope knot 702 is sleeved on the outer surface of the tying head 203. The tying rope knot 702 is a slipknot knot, and the tying order of the elastic line 7 and the tying rope knot 702 need to be reasonably arranged. Specifically, the tying rope knot of the elastic line 7 that is tied and tightened last is at the rearmost end on the outer surface of the tying head 203, and the tying rope knots 702 of the elastic line 7 that is tied and tightened later are tied in sequence, and the tying rope knot 702 of the elastic line 7 that is tied and tightened first is sleeved on the frontmost end of the tying head 203; The ligation head 203 is brought close to the lesion tissue to be ligated, and the negative pressure device 2 is controlled to operate so that the ligation head 203 and the pipeline reach the set negative pressure value. As the ligation head 203 moves, the lesion tissue is sucked into the ligation cavity 2033 of the ligation head 203; Controlling the line switching mechanism 4 to operate so that the line hanging member 402 of the line switching mechanism 4 moves to the line hooking position; The wire-winding mechanism 3 is controlled to operate. Specifically, the second motor 602 operates to drive the wire-winding roller 301 to rotate, thereby driving the wire-hooking member 302 to move to the position of the wire-hanging member 402, and hooking the wire-hanging knot 701 on the wire-hanging member 402. The wire-winding roller 301 continues to rotate to rewind the wire, tightening the elastic wire 7. As the elastic wire 7 is tightened, the ligature knot 702 of the elastic wire 7 moves from the outer surface of the ligature head 203 to the suction end 2031 and slides down to be ligated on the end surface of the suction end 2031 of the ligature head 203 corresponding to the lesion tissue. The further tightening of the elastic line 7 causes the ligature knot 702 to be tightened and tied to the lesion tissue. During the tightening process of the ligature knot 702, since the threading hole 2034 is opened on the suction end 2031 of the ligature head 203, corresponding to the position of the ligature knot 702 tied to the lesion tissue, the elastic line 7 at one end of the ligature knot 702 moves toward the threading hole 2034 along the radial direction of the ligature head 203, and does not generate a component force that drives the ligature knot 702 to move on the ligature position of the lesion tissue, thereby keeping the ligature position stable. During the wire-winding process, the tightening degree of the elastic wire 7 is monitored. When the elastic wire 7 reaches the set tightening degree, the wire-breaking mechanism 5 is controlled to operate to cut off the elastic wire 7. Specifically, the first motor 801 drives the rotating member 501 to rotate through the first gear 802 and the second gear 803, thereby driving the cutter 503 to rotate, and the cutter 503 cuts off the taut elastic wire 7. Specifically, the operation of the wire-breaking mechanism 5 can be controlled by sending a pulse signal. The negative pressure device 2 is controlled to stop running, the pressure relief switch is turned on, and the pressure relief button 9033 is pressed to restore the pressure in the ligation cavity 2033 of the ligation head 203 to normal pressure, and the ligation head 203 is separated from the lesion tissue; Move the multi-shot anorectal ligation device to another lesion location and repeat the above steps. Multiple lesions can be ligated without changing the ligation device.

[0049] In this embodiment, a controller is specifically configured to control the operation of the negative pressure device 2, the wire taking-up mechanism 3, the wire switching mechanism 4 and the wire breaking mechanism 5. The controller may specifically be a control circuit and a control chip used in the prior art, and a display screen is configured to display certain information during the operation, such as the pressure of the negative pressure device 2, the number of elastic wires 7 used, etc., to provide the operator with auxiliary information for easy operation.

[0050] A display screen is installed on the outside of the shell 1 for displaying information such as the negative pressure value in the ligation cavity 2033 so that the operator can understand the relevant parameters in real time. Specifically, a battery is arranged inside the shell 1 to provide power for the controller, the display screen, the negative pressure device 2, the wire taking-up mechanism 3, the wire switching mechanism 4 and the wire breaking mechanism 5.

[0051] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A multi-shot anorectal ligation device, comprising a housing, characterized in that: The shell is provided with a negative pressure device, a wire taking-up mechanism and a wire switching mechanism, the shell is connected to a wire breaking mechanism, the front end of the wire breaking mechanism is connected to a ligature head, the outer surface of the ligature head is used for sleeving an elastic wire knot, the ligature head is provided with a ligature cavity for accommodating lesion tissue, the ligature cavity is connected to the negative pressure device, the negative pressure device is used to form a negative pressure in the ligature cavity, the ligature head is provided with more than two threading holes for the elastic wire to pass through, one end of the threading hole is opened on the front end surface of the ligature head; The wire-taking mechanism is used to tighten the elastic wire, the wire-breaking mechanism is used to cut off the tightened elastic wire, and the wire-switching mechanism is used to switch the elastic wire; The line switching mechanism includes a line hanging installation plate slidably mounted on the shell, the line hanging installation plate is connected to the third driving mechanism, and more than two line hanging parts are arranged on the line hanging installation plate. The line taking-up mechanism is located below the line hanging parts and cooperates with the line hanging parts.

2. The multi-shot anorectal ligation device according to claim 1, characterized in that: The wire-reeling mechanism comprises a wire winding roller rotatably mounted on the inner wall of the shell, the wire winding roller is connected to a second driving mechanism, the wire winding roller is provided with a wire winding groove, a wire hooking member is provided in the wire winding groove, and the wire hooking member is located below the wire hanging member and cooperates with the wire hanging member.

3. The multi-shot anorectal ligation device according to claim 1, characterized in that: The wire breaking mechanism includes a connecting tube fixedly connected to the shell, the connecting tube is connected to the sleeve tying head, a rotating part is rotatably installed in the connecting tube, one end of the rotating part close to the sleeve tying head is connected to a cutter, the other end of the rotating part is connected to the first driving mechanism, and the cutter cooperates with the threading hole.

4. The multi-shot anorectal ligation device according to claim 3, characterized in that: The threading hole passes through the side wall of the tying head from the front end to the rear end, one end of the threading hole opens to the inside of the connecting tube, the outer part of the rear end surface of the tying head is provided with a rotary cut surface, the threading hole opens on the rotary cut surface, and the cutter slidably cooperates with the rotary cut surface.

5. The multi-shot anorectal ligation device according to claim 4, characterized in that: The cutter comprises a blade and a blade holder, one end of the blade holder is fixedly connected to the end wall of the rotating member, and the other end of the blade holder is fixedly connected to the blade; The blade is provided with a first end face and a second end face, the first end face is parallel to the rotary cutting surface and abuts against the rotary cutting surface, the second end face is fixedly connected to the tool holder, the first end face and the second end face intersect to form a blade, and the blade is slidably matched with the rotary cutting surface.

6. The multi-shot anorectal ligation device according to claim 1, characterized in that: The negative pressure device comprises a negative pressure tube, one end of which is connected to the ligation cavity of the ligation head; The negative pressure device also includes a pressure relief switch, which includes an adapter, which is fixed on the inner wall of the shell, and the adapter includes a main air duct and a bronchial duct connected to the main air duct. One end of the main air duct is connected to the negative pressure mechanism through the trachea, and the other end is connected to the other end of the negative pressure pipe through the trachea. A sealing plug is provided at the pipe mouth of the bronchial duct, and the sealing plug is connected to a fourth driving mechanism.

7. The multi-shot anorectal ligation device according to claim 6, characterized in that: The fourth driving mechanism comprises a rotating rod, the middle part of which is rotatably connected to the inner side wall of the housing, one end of which is fixedly connected to the sealing plug, and the other end of which is vertically protruding downward from its rotation plane to form a connecting shaft, and the connecting shaft is connected to a pressure relief button; The pressure relief button includes a rod body, one end of the rod body passes through the shell and is located outside the shell, the other end of the rod body is provided with an elliptical first slot hole, the length extension direction of the first slot hole is perpendicular to the axial direction of the rod body, the connecting shaft is slidably matched with the first slot hole, a stopper is fixedly provided on the side wall of the rod body, the end face of the stopper is abutted against the inner wall of the shell, a baffle is fixedly provided on the inner wall of the shell, the rod body passes through the baffle, and a spring is connected between the baffle and the stopper.

8. The multi-shot anorectal ligation device according to claim 1, characterized in that: An elastic line is passed through each threading hole of the tying head, one end of the elastic line is provided with a tying knot, the tying knot is sleeved on the outer surface of the tying head, the other end of the elastic line is provided with a hanging knot, the hanging knot is hung on the hanging piece, and the elastic line passes through the threading hole and is connected to the switching line mechanism.

9. A method for using a multi-shot anorectal ligation device, characterized in that: Using the multi-shot anorectal ligation device according to any one of claims 1 to 8, the method of using the device comprises: Hang the hanging rope knot at one end of the elastic line on the hanging piece of the line switching mechanism, pass the other end of the elastic line through the threading hole and put the tying rope knot on the outer surface of the tying head; Control the operation of the negative pressure device to make the set negative pressure value reach inside the tying head and pipeline; Control the line switching mechanism to move the line hanging part of the line switching mechanism to the line hooking position. Control the operation of the line-retrieving mechanism so that the line-hooking member hooks the tying knot on the line-hanging member and continues to reel in the line; During the process of winding, the degree of tightening of the elastic line is monitored. When the elastic line reaches the set degree of tightening, the line breaking mechanism is controlled to operate to cut off the elastic line. Control the negative pressure device to stop running and open the pressure relief switch; Move the ligature head to other lesion locations and repeat the above steps.

Images