Endoscopic internal hemorrhoid ligator

Abstract

The present application relates to the technical field of medical apparatus and instruments, and discloses an endoscopic internal hemorrhoid ligator. The present application comprises a ligator body, a conversion device, a release pulling device and an elastic ligature device. The ligator body has a suction cavity at one end and is used for connecting a lens of an endoscope at the other end. A telescopic structure at the front end is used for sleeving the elastic ligature device. The telescopic structure is connected with the release pulling device. Under the drive of the release pulling device, the ligator body can perform telescopic movement of the telescopic structure to complete the release operation of the elastic ligature device. The conversion device has a channel for the endoscope to pass through. The two ends are respectively connected with a channel port and a channel cap, thereby providing an operation channel and a support base for the whole ligator. The release pulling device is fixed on the conversion device. By controlling the movement stroke of the ligator body, the reliable release of the elastic ligature device is finally realized. The elastic ligature device is sleeved on the telescopic structure of the ligator body and is used for tightening and ligating internal hemorrhoids after being detached.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an endoscopic internal hemorrhoid ligator. BACKGROUND

[0002] With the development of endoscopic internal hemorrhoid treatment technology, it is found in clinical practice that the mucosal ball of the endoscopic rubber band ligation is small, and the endoscopic internal hemorrhoid loop ligature is easy to be removed early after treatment, affecting the treatment effect. The tightness of the rubber band cannot achieve the effect of ligation.

[0003] And currently, if internal hemorrhoid sclerotherapy or other operations are needed during endoscopic internal hemorrhoid loop ligation, the loop ligation device must be repeatedly disassembled and assembled, which is time-consuming and complicated, and the disassembly and assembly process is prone to ring loss.

[0004] To solve the above problems, the present application provides an endoscopic internal hemorrhoid ligator. SUMMARY

[0005] The present application provides an endoscopic internal hemorrhoid ligator to solve the above technical problems.

[0006] To achieve the above purpose, the present application adopts the following technical solution: including a ligator body, a conversion device, a release pulling device and a elastic ligation line device;

[0007] The ligator body has a working channel extending from front to back inside, the front end is a suction cavity, and a bearing part for bearing the elastic ligation line device is provided, and the rear end is used for connecting the lens of the endoscope;

[0008] The conversion device is used for connecting the forceps channel port and the forceps channel cap of the endoscope, and providing an operation channel for the endoscopic instrument;

[0009] The release pulling device is fixed on the conversion device and can be operatively connected to the bearing part of the ligator body, and is used to drive the bearing part to perform a release action, so that the elastic ligation line device is separated from the bearing part;

[0010] The elastic ligation line device is arranged on the bearing part and is used for ligating internal hemorrhoids after being separated.

[0011] Preferably, the ligator body is partially transparent or fully transparent, which greatly reduces the influence on the endoscopic vision.

[0012] Preferably, the bearing part is a movable member that can move relative to the ligator body, and the release pulling device drives the movable member to move to change the support state of the elastic ligation line device to complete the release.

[0013] Preferably, the front end of the ligator body is provided with a groove, and the movable member is a release baffle slidably arranged in the groove, and an elastic element is arranged between the release baffle and the bottom of the groove.

[0014] A specific structure of the bearing part, the front end of the ligator body is provided with a groove, and the groove is provided with a movable release baffle, and the internal space defined by the release baffle constitutes a region for accommodating the target internal hemorrhoids, the release baffle and the bottom of the groove are connected by a release spring, the upper part of the release baffle is used for sleeving the elastic ligature device, the bottom of the release baffle is connected to the release pulling device, and in the natural state, the release baffle remains in the position of extending out of the groove under the action of the release spring, at this time, the elastic ligature device sleeved outside the baffle is in a standby state; when the release pulling device is operated to apply a pulling force, the release baffle overcomes the elastic force of the release spring and shrinks back along the groove, and the retracting movement of the baffle causes the elastic ligature device sleeved thereon to be out of contact, so that the reliable release and ligation of the elastic ligature device on the internal hemorrhoids are realized.

[0015] Preferably, the release pulling device comprises a control part, a locking mechanism and a traction member.

[0016] The control part is movably arranged on the conversion device and can be selectively fixed in position by the locking mechanism.

[0017] One end of the traction member is connected to the control part, and the other end extends and is connected to the bearing part of the ligator body.

[0018] By operating the control part and fixing by the locking mechanism, the state of the bearing part is controlled by the traction member.

[0019] Specifically, the release pulling device, the control part is a fixer, the traction member is a pulling wire, and the locking mechanism is arranged on the fixer to fix the fixer. The release pulling device comprises a lead channel, a fixing groove, a pulling wire and a fixer. The lead channel and the fixing groove are arranged on one side of the conversion device close to the mouth of the forceps channel, and the fixer is movably arranged in the fixing groove. The fixer is connected to the pulling wire, the pulling wire passes out of the fixing groove, passes through the lead channel, passes out of the conversion device, passes through the mouth of the forceps channel and the forceps channel, and is connected to the ligator body. The fixing groove and the fixer are matched by the locking mechanism, so that the fixer can realize switchable movement state and fixed locking state in the fixing groove, so that the pulling of the ligator can be realized by adjusting the position of the fixer.

[0020] Preferably, the locking mechanism comprises a ratchet structure and a locking assembly matched therewith.

[0021] Preferably, the locking assembly comprises a pair of rotatable clamping arms and a driving member, movement of the driving member controls the opening and closing of the clamping arms, and the clamping arms are engaged with the ratchet structure in the closed state to achieve fixation.

[0022] Specifically, the ratchet structure is a sawtooth on both sides of the fixed slot, the clamping arms in the locking assembly are the fixed wing and the movable wing on the fixing device, and the driving member is a conical cap. The two sides of the fixed slot are sawtooth-shaped, which cooperates with the fixing device to achieve the position fixation of the fixing device. The fixing device comprises a movable bottom plate which slides in the fixed slot. The fixed wing and the movable wing are a triangular plate which is integrally rotated on the movable bottom plate. There is one fixed wing and one movable wing on each side of the triangular plate. A tension spring is connected between the two fixed wings in the middle. A cap core fixing column is designed in the center of the two movable wings. The cap core fixing column is connected with the conical cap through a rebound spring.

[0023] Preferably, the elastic ligation device comprises a pre-set elastic ligation loop and a guide connected thereto, which is used to guide and assist the tightening of the elastic ligation loop after it is detached.

[0024] Preferably, the elastic ligation loop adopts a pullable tightening knot.

[0025] Specifically, the elastic ligation device comprises an elastic ligation loop and a guide. The elastic ligation loop is knotted on the telescopic structure of the ligation device body, and the knot is a telescopic knot. By pulling one end of the knot, the knot is gradually tightened and cannot be loosened by itself. The guide is connected to the end of the knot which can be pulled to tighten the elastic ligation loop.

[0026] Preferably, the knot of the elastic ligation loop has an end which can be pulled and connected to the guide.

[0027] Specifically, the connection part is an elastic ligation ring, and a knot pushing auxiliary line is connected to the elastic ligation ring to facilitate the connection with the guide.

[0028] Preferably, the guide comprises an elongated rod body, and a functional part is arranged at the distal end of the rod body for capturing or connecting the elastic ligation loop.

[0029] Specifically, the guide is a knot pushing rod, which comprises a knot pushing rod outer sleeve and a knot pushing rod inner core. The knot pushing rod outer sleeve has a channel for the knot pushing rod inner core, the pullable end of the elastic ligation loop, and the knot pushing auxiliary line to pass through. One end of the knot pushing rod inner core is designed with a hook which can hook the knot pushing auxiliary line of the elastic ligation loop.

[0030] Preferably, the device further comprises an anal dilator, and the anal dilator has a channel for the endoscope to pass through, and an observation window is arranged at the distal end of the anal dilator.

[0031] Specifically, the anal dilator is used to dilate the anus in the initial stage and the operation stage, provide a clear view and facilitate the smooth entry of the endoscope into the anal area and the ligation of internal hemorrhoids, the internal anal dilator has a channel extending forward and backward for the endoscope to pass through, the anal dilator is designed as two parts, the anal canal part for extending into the anus and the hand-held part located outside for operation. The anal canal part is swollen. At present, the endoscopic internal hemorrhoid ligation basically uses the ligation device for treating esophageal and gastric varices, which is relatively small. Because the anal dilator is provided, the ligation device body can be made larger, and there are advantages in observation and accommodation space.

[0032] Preferably, a sealing member is arranged at the proximal end of the anal dilator.

[0033] Specifically, a ring-shaped sealing film is arranged at the inlet of the hand-held part, which is made of silica gel.

[0034] Preferably, one or more auxiliary ports with self-sealing function are arranged on the wall of the anal dilator.

[0035] Specifically, an auxiliary port is arranged between the anal canal part and the hand-held part of the anal dilator, which is made of silica gel and has a central channel for specific instruments to pass through. When no instrument is inserted, the auxiliary port is in a closed state, and after the instrument is inserted, the instrument blocks the auxiliary port to achieve the sealing effect.

[0036] Preferably, the anal dilator further comprises an inner core, which can be placed in the channel of the anal dilator, and the distal end of the inner core is provided with a inflatable fixing part.

[0037] Specifically, the inner core comprises an inner core main rod, the front end of the main rod is designed with an air bag, the rear end of the inner core main rod is provided with a piston device, the piston device is in communication with the air bag to realize the inflation and deflation of the air bag. When the air bag is inflated, it can fill the gap between the front end of the inner core and the internal channel of the anal dilator body, which is convenient for inserting into the anus; when the air bag is deflated, it is convenient to take out the inner core from the internal channel of the anal dilator to the outside direction or insert it from the outside to the inside direction.

[0038] The beneficial effects of the present application are:

[0039] (1) The present application can overcome the limitations of the current clinical endoscopic internal hemorrhoid treatment technology, facilitate endoscopic internal hemorrhoid treatment, ligate larger mucosal balls, and ligate more stably without easy ring shedding.

[0040] (2) The design of the present application can observe the internal hemorrhoid area more intuitively with the help of the anal dilator, and the observation window is convenient for endoscopic internal hemorrhoid treatment.

[0041] (3) The conversion device of the present application can pull and release without affecting the insertion of the instrument for auxiliary treatment.

[0042] (4) the present application designs release pulling device, through fixed and movable fixator, operation ligator body front end release baffle, achieve the purpose of release elastic ligation line device;

[0043] (5) the present application designs fixator and fixed slot, through press and release conical cap, reach the purpose of fixed and movable fixator;

[0044] (6) the present application designs elastic ligation line device, the device through one side push knot tight, will not loose, so as to achieve the purpose of ligating hemorrhoidal nucleus;

[0045] (7) the present application designs push knot auxiliary line, after completing elastic ligation line device push knot, can easily remove the auxiliary line, reduce the retention of intra-anal knot, reduce postoperative discomfort;

[0046] (8) the present application designs push knot rod, through the auxiliary treatment of anal dilator auxiliary mouth insertion. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 it is the whole structure schematic diagram of the present application endoscopic internal hemorrhoids ligator;

[0048] Figure 2 it is the structure schematic diagram of the present application endoscopic internal hemorrhoids ligator in anal dilator;

[0049] Figure 3 it is the structure schematic diagram of the present application ligator body cross section;

[0050] Figure 4 it is the structure schematic diagram of the present application conversion device and release pulling device;

[0051] Figure 5 it is the structure schematic diagram of the present application conversion device and release pulling device installation in endoscopic forceps channel mouth;

[0052] Figure 6 it is the structure schematic diagram of the present application fixator distraction;

[0053] Figure 7 it is the structure schematic diagram of the present application fixator folding;

[0054] Figure 8 it is the structure schematic diagram of the present application fixator cross section;

[0055] Figure 9 it is the structure schematic diagram of the present application fixator side view;

[0056] Figure 10 it is the structure schematic diagram of the present application fixator and fixed slot;

[0057] Figure 11 it is the structure schematic diagram of the present application elastic ligation line device;

[0058] Figure 12 Structure diagram of the knot pushing rod of the present application;

[0059] Figure 13 Structure diagram of the anal dilator of the present application;

[0060] Figure 14 Structure diagram of the anal dilator of the present application after inserting the inner core and the inner core is in the inflated state;

[0061] Figure 15 Structure diagram of the anal dilator of the present application after inserting the inner core and the inner core is in the deflated state;

[0062] Figure 16 Structure diagram of the inner core in the inflated state;

[0063] Figure 17 Structure diagram of the inner core in the deflated state;

[0064] Figure 18 Structure diagram of the inner core piston device;

[0065] Figure 19 Structure diagram of the knot tying of the elastic ligature body.

[0066] In the figure:

[0067] 1, ligature body; 11, suction port; 12, release baffle; 13, groove; 14, release spring; 15, release lead; 16, release lead ring; 17, lens connecting cap; 18, suction cap; 19, suction cavity; 110, release lead channel; 111, lens insertion port;

[0068] 2, conversion device; 21, conversion forceps channel cap; 22, conversion device body; 23, conversion device inner channel; 24, conversion forceps channel outer cap port; 25, conversion outer port; 26, conversion inner port;

[0069] 3, release pulling device; 31, lead channel; 32, fixed slot; 33, pulling line; 34, pulling ring;

[0070] 4, fixer; 41, connecting ring; 42, fixed wing; 43, movable wing; 44, fixed stake; 45, cap core fixed column; 46, conical cap; 47, expansion spring; 48, rebound spring; 49, movable bottom plate;

[0071] 5, elastic ligature device; 51, elastic ligature body; 52, elastic ligature knot; 53, pulling end; 54, elastic ligature ring; 55, tail end; 56, knot pushing auxiliary line; 57, knot pushing rod outer sleeve; 58, knot pushing rod inner core; 59, knot pushing end; 510, knot making ring; 511, knot tightening pulling end;

[0072] 6, anal dilator; 61, inner opening; 62, observation window; 63, anal canal portion; 64, auxiliary opening; 65, hand-held portion; 66, outer opening; 67, annular sealing membrane;

[0073] 7, endoscope; 71, channel opening; 72, lens; 73, scope; 74, channel;

[0074] 8, inner core; 81, inner core head end; 82, air bag; 83, air bag connecting tube; 84, inner core main rod; 85, fixed portion; 86, piston device; 861, device inner space; 862, piston; 863, piston hand rod; 864, baffle; 865, hand rod hand-held portion; 866, device inner piston inner side space; 867, device inner piston outer side space. DETAILED DESCRIPTION

[0075] The technical solutions of the present application are further specifically described below by examples and in conjunction with the drawings.

[0076] The endoscope 7 comprises a lens 72, a scope 73, a channel opening 71 and a channel 74.

[0077] Example 1: An internal hemorrhoid ligator for endoscope, used in conjunction with the endoscope 7, as shown in FIG. 1, comprising a ligator body 1, a conversion device 2, a release pulling device 3 and an elastic ligature device 5. Figures 1-11

[0078] The ligator body 1 is installed at the lens 72 and is fully transparent, as shown in FIG. 2, and the structure comprises: a suction opening 11, a release baffle 12, a groove 13, a release spring 14, a release lead 15, a release lead ring 16, a lens connecting cap 17, a suction cap 18, a suction cavity 19, a release lead passage 110 and a lens insertion opening 111. Figure 3

[0079] ​​Specifically, the ligator body 1 has a front and rear extending channel for gas and liquid to pass through, the front end of the ligator body 1 is provided with an enlarged suction cavity 19, the internal hemorrhoids are sucked into the suction cavity 19 through negative pressure suction, the rear end is designed with a lens connecting cap 17 matched with the lens 72, the lens connecting cap 17 is tightly sleeved on the lens 72 in use, the diameter of the suction cavity 19 is larger than that of the lens connecting cap 17, so that a larger suction space is obtained, the volume of the internal hemorrhoids mucosa sphere sucked in can be larger, the ligator body 1 is designed with a groove 13 at the front end, the groove 13 is designed with a release baffle 12, the depth of the groove 13 is greater than the length of the release baffle 12, the release baffle 12 is connected with the release spring 14 between the groove 13 and the bottom, the release baffle 12 is partially stretched out of the groove 13 due to the spring effect, and the release baffle 12 is connected with the release lead 15, when the release lead 15 receives pulling, the release baffle 12 can be retracted into the groove 13, at this time, the elastic ligature line body 51 on the release baffle 12 can be released, the release lead 15 passes through the lens insertion port 111, and the tail end is a release lead ring 16, so as to be connected with the pulling ring 34 of the release pulling device 3.

[0080] The conversion device 2 is connected at the forceps channel port 71, as shown in Figure 4 and Figure 5 , the structure comprises a conversion forceps channel cap 21, a conversion device body 22, a conversion device inner channel 23, a conversion forceps channel outer cap port 24, a conversion outer port 25 and a conversion inner port 26.

[0081] Specifically, the conversion device body 22 is provided with the conversion device inner channel 23 in the inside, the conversion device inner channel 23 is provided for the endoscope instrument, liquid and gas to pass through, the two ends of the conversion device inner channel 23 are respectively the conversion outer port 25 and the conversion inner port 26, the conversion outer port 25 is provided with the conversion forceps channel outer cap port 24, the conversion inner port 26 is provided with the conversion forceps channel cap 21, the lead channel 31 is designed near the conversion forceps channel cap 21, the conversion forceps channel cap 21 is matched with the forceps channel port 71, can sleeve the forceps channel port 71 of the endoscope and seal the connecting port, the conversion forceps channel outer cap port 24 is matched with the endoscope forceps channel cap, can plug the connecting port, the conversion device body 22 is designed with the release pulling device 3 at the side.

[0082] The release pulling device 3 is fixed on the conversion device 2, and is connected with the release baffle 12 of the ligator body 1 through the pulling line 33 and the release lead 15, as shown in Figures 4-10 , the structure comprises the lead channel 31, the fixed groove 32, the pulling line 33, the pulling ring 34 and the fixer 4.

[0083] Specifically, the fixed slot 32 and the lead channel 31 are arranged on the conversion device body 22, the fixer 4 is movably fixed on the fixed slot 32, the position of the fixer 4 can be adjusted, the fixer 4 is connected with the pull lead 33, the pull lead 33 passes through the fixed slot 32, the lead channel 31, the conversion inner channel 23, the conversion inner opening 26, the forceps channel opening 71 and the forceps channel 74. The end of the pull lead 33 is provided with a pull ring 34, the pull ring 34 is connected with the release lead ring 16 of the ligator body 1. The size of the pull ring 34 should be able to cover the ligator body 1, so that the ligator body 1 can pass through the pull ring 34 after the pull ring 34 passes through the release lead ring 16, and then the ligator body 1 can pass out of the pull ring 34, thereby realizing the connection between the pull ring 34 and the release lead ring 16.

[0084] Specifically, as shown in Figure 10 the two sides of the fixed slot 32 are sawtooth-shaped, which cooperates with the fixer 4 to realize the position fixation of the fixer 4; the length of the fixed slot 32 is longer than the straight distance between the ligator body 1 and the lens 72 after the release lead ring 16 is connected with the pull ring 34, the length of the exposed part of the release baffle 12 and the length of the part where the lead channel 31 is connected with the fixed slot 32, the center lines of which coincide with each other, and the other side is oblique, which leads to the conversion device inner channel 23, which is convenient for parallel movement of the fixer 4, thereby tensioning the pull lead 33, so as to achieve the purpose of releasing the elastic ligature body 51. The center of the fixed slot 32 is a channel for the fixer 4 to pass through, which has certain lubricity between the channel and the fixer 4, which is helpful for the movement of the fixer 4, and the sawtooth on both sides cooperates with the fixer 4 to clamp the fixer 4, so as to fix it.

[0085] The fixer 4, as shown in Figures 6-10 the structure includes a connecting ring 41, a fixed wing 42, a movable wing 43, a fixed stake 44, a cap core fixed column 45, a conical cap 46, a distraction spring 47, a rebound spring 48 and a movable bottom plate 49.

[0086] Specifically, the movable base plate 49 slides in the fixed groove 32, the tail end is provided with a connecting ring 41 for connecting the pulling line 33, the fixed wing 42 and the movable wing 43 are integrated triangular plates, the central movable wing is fixed to the fixed stake 44 and can rotate along the fixed stake 44, there is one fixed wing 42 on each side of the movable wing 43, there is one fixed stake 44 on each side of the central movable wing 43, the fixed stake 44 is arranged on the movable base plate 49, the central movable wing 43 is provided with a support spring 47, the support spring 47 supports the two fixed wings 42 to the two sides in the natural state, the two fixed wings 42 are clamped into the sawteeth on the two sides of the fixed groove 32, and the two fixed wings 42 play a role in fixing and limiting. The hat core fixing column 45 is designed in the central movable wing 43, the conical cap 46 is connected to the hat core fixing column 45 through the rebound spring 48, the rebound spring 48 pushes the conical cap 46 away in the natural state, the fixed wing 42 and the movable wing 43 are not in the same plane, when the conical cap 46 is pressed, the rebound spring 48 is pressed downward, the conical cap 46 gradually moves downward and supports the two movable wings 43, the two fixed wings 42 are retracted through the fixed stake 44 by using the principle of a lever, at this time, the fixed wing 42 is away from the sawteeth of the fixed groove 32, and the fixing device 4 can freely move. At the same time, under the cooperation of the sawteeth of the fixed groove 32 and the fixed wing 42, when the conical cap 46 is not pressed, the fixing device 4 can easily slide in the fixed groove 32 to the direction of the conversion outer port 25, and can be clamped to the direction of the conversion inner port 26.

[0087] The elastic ligation line device 5, as shown in Figure 11 and Figure 12 , the structure comprises: an elastic ligation line body 51, an elastic ligation line knot 52, a pulling end 53, an elastic ligation line ring 54, a tail end 55, a push knot auxiliary line 56, a push knot rod outer sleeve 57, a push knot rod inner core 58, a push knot end 59, a knot making ring 510, and a knot tightening pulling end 511.

[0088] Specifically, the elastic ligation line body 51 adopts a telescopic knot, and is one-way tight, and a manufacturing schematic diagram of the elastic ligation line body 51 is shown in Figure 19 , a elastic line (as shown by A in Figure 19 ) is taken; the thumb and index finger of the left hand are used to fix the A end and the middle part to form a ring (as shown by B in Figure 19 ); the B end is wound around the finger fixing part from the front in the arrow direction (as shown by B in Figure 19 , C in Figure 19 ), so that another ring (knot making ring 510) is formed, and then the B end is wound around the rear of the finger fixing part, and this is repeated for 2-3 times (when winding, the elastic line is pulled tight, the number of winding is determined according to the friction force of the elastic line, and it is ensured that the push knot can not be loose), and the elastic ligation line knot 52 is gradually formed (as shown by D in Figure 19 , E in Figure 19 , F in Figure 19 ); then the B end is passed through the knot making ring 510 (as shown by G in Figure 19 , H in Figure 19The B end and the tight knot pulling end 511 are pulled to the opposite tight knot, thereby forming the elastic ligature knot 52, and the AB ends are cut short to form the pulling end 53 and the tail end 55, respectively, and the pulling end 53 is fixedly connected to the elastic ligature ring 54, and the elastic ligature body 51 is completed.

[0089] The elastic ligature ring 54 is buckled with the push knot auxiliary line 56. The push knot rod outer sleeve 57 and the push knot rod inner core 58 form a set of push knot rods. The push knot rod outer sleeve 57 has a channel for the push knot rod inner core 58 and the elastic ligature ring 54, the pulling end 53, and the push knot auxiliary line 56 to pass through. The diameter of the elastic ligature knot 52 is greater than the inner diameter of the push knot rod outer sleeve 57. The length of the push knot rod inner core 58 is longer than the push knot rod outer sleeve 57. The length of the push knot rod outer sleeve 57 is longer than the total length of the anal dilator anal tube 63 and the auxiliary port 64. The push knot rod inner core 58 is designed with a hook at one end, which can hook the push knot auxiliary line 56. The push knot rod outer sleeve 57 is designed to be enlarged as the push knot end 59 near the hook side of the push knot rod inner core 58. The push knot rod (the push knot rod inner core 58 is completely inserted into the push knot rod outer sleeve 57, and the hook at one end of the push knot rod inner core 58 is completely exposed outside the push knot end 59) is inserted through the anal dilator auxiliary port 64. After the push knot rod inner core 58 hooks the push knot auxiliary line 56, it is pulled outwards. The length of the push knot auxiliary line 56 is required to be longer than the total length of the anal dilator anal tube 63 and the auxiliary port 64, and can be pulled out to the outside of the anal dilator auxiliary port 64. The push knot rod outer sleeve 57 is pushed inwards, bringing the push knot auxiliary line 56, the elastic ligature ring 54, and the pulling end 53 into the push knot rod outer sleeve 57. The elastic ligature knot 52 is clamped outside the push knot end 59. By pushing and pulling, the elastic ligature body 51 is tightened to achieve the purpose of ligating internal hemorrhoids.

[0090] Example 2: The endoscopic internal hemorrhoid ligator further comprises an anal dilator 6 for expanding the anus at the initial stage and the operation stage, providing a clear view and facilitating the smooth entry of the endoscope into the anal area and ligating internal hemorrhoids, as shown in Figure 13 The structure includes an inner port 61, an observation window 62, an anal tube 63, an auxiliary port 64, a hand-held part 65, an outer port 66, and a ring-shaped airtight film 67.

[0091] Specifically, the anal dilator 6 has a channel extending front to back for the endoscope to pass through, and the channel has an inner opening 61 and an outer opening 66 at both ends, and the inner opening 61 of the anal dilator 6 is designed with a viewing window 62, and the anal dilator 6 can be rotated to observe the hemorrhoids and lesions at different points of the anus, which is also beneficial to the operation under the endoscope (endoscopic internal hemorrhoid ligation, sclerotherapy, etc.). The outer opening 66 of the anal dilator 6 is designed with a ring-shaped sealing film 67 made of silicone material with a certain elasticity, and the central part has a channel for the endoscope 7 to pass through, and the diameter of the channel is smaller than that of the endoscope 7. After the endoscope 7 is inserted, the ring-shaped sealing film 67 is expanded by the endoscope 7 to achieve the effect of sealing the inner channel of the anal dilator 6 on one side, and also makes the endoscope 7 and the anal dilator 6 connected to a certain extent through the ring-shaped sealing film 67, while leaving a certain movement space for the endoscope 7. The anal dilator 6 is designed in two parts: an anal canal part 63 and a handheld part 65. The anal canal part 63 is enlarged to obtain a larger field of view and operation space, and the length of the anal canal part 63 can be clearly observed, preventing the anal dilator 6 from being inserted too deep and causing intestinal wall damage or the anal dilator 6 slipping into the intestinal cavity. The handheld part 65 is made of a slightly soft material and has a certain mobility, which is convenient for the operation and bending of the endoscope 7 after insertion, and also has a certain support, which is convenient for the operator and the assistant to hold the anal dilator 6. An auxiliary opening 64 is designed between the anal canal part 63 and the handheld part 65 of the anal dilator 6, which is directly opposite the viewing window 62. The auxiliary opening 64 is made of silicone material, and the central part has a channel for specific instruments to pass through. When no instrument is inserted, the auxiliary opening 64 is in a closed state. After a specific instrument is inserted, the auxiliary opening 64 is blocked by the instrument to achieve a sealing effect. In this application, the auxiliary opening 64 is used for inserting a knot pushing rod.

[0092] Example 3: The anal dilator 6 is matched with an inner core 8, as shown in Figures 13-18 The inner core 8 includes an inner core head end 81, an air bag 82, an air bag connecting pipe 83, an inner core main rod 84, a fixed part 85, and a piston device 86.

[0093] The inner core 8 is designed with an air bag 82 at the front end, which can fill the gap between the front end of the inner core 8 and the inner channel of the anal dilator 6 when inflated, which is convenient for insertion into the anus. When the air bag 82 is deflated, it is convenient to take out the inner core 8 from the inner channel of the anal dilator 6 to the outer opening 66 direction or insert it from the outer opening 66 to the inner opening 61 direction. The inner core main rod 84 and the fixed part 85 are designed with a piston device 86 inside, which can achieve the purpose of deflating or inflating the air bag 82 by pulling or pushing the device. The fixed part 85 has a channel in the center for the piston handle 863 to pass through.

[0094] Piston device 86, including device space 861, piston 862, piston hand lever 863, baffle 864, hand lever handle 865, device piston inner space 866, device piston outer space 867. The piston hand lever 863 passes through the central passage of the fixed part 85, one side connected with the piston 862, the other side connected with the hand lever handle 865; The device piston inner space 866 is communicated with the air bag 82 through the air bag connecting pipe 83; The piston 862 is just in close contact with the inner wall of the device, and the device piston inner space 866 is sealed by the piston 862; The device piston outer space 867 is communicated with the outside through the central passage of the inner core fixed part 85; The device space 861 includes the device piston inner space 866 and the device piston outer space 867; The device piston inner space 866 and the device piston outer space 867 change with the movement of the piston 862; The piston device 86 draws the gas in the air bag 82 to the device piston inner space 866 by pulling the piston hand lever 863, and the baffle 864 is designed outside the device, which is connected with the inner core fixed part 85. When the device space 861 and the air bag 82 are filled, the internal space volume is equal. When the piston hand lever 863 is blocked, the gas in the air bag 82 has been completely sucked into the device piston inner space 866, and the air bag 82 is in the state of deflation, which is convenient for inserting the inner core 8 into the anal dilator 6 or taking out from the anal dilator 6; By pushing the piston hand lever 863, the gas in the device piston inner space 866 passes through the air bag connecting pipe 83 into the air bag 82. When the piston hand lever 863 is blocked, it means that the gas in the device piston inner space 866 has been completely filled into the air bag 82, and the air bag 82 is in the state of inflation. After the inner core head 81 is smeared with lubricant, the anal dilator 6 with the inner core 8 is inserted into the anus.

[0095] The anal dilator 6 is used for endoscopic observation of the anus and endoscopic treatment of anal lesions. The deflated inner core 8 is inserted into the anal dilator 6 through the anal dilator outer port 66. When the inner core fixed part 85 is in contact with the anal dilator outer port 66, the inner core 8 is in place, and the inner core head 81 is just exposed outside the inner port 61 of the anal dilator 6. At this time, the hand lever handle 865 is pushed towards the inner core head 81, and the gas in the device piston inner space 866 is punched into the air bag 82 through the air bag connecting pipe 83 by the piston hand lever 863 and the piston 862. When the hand lever handle 865 cannot be pushed forward, the gas in the device piston inner space 866 has been completely punched into the air bag 82, and the air bag 82 reaches the state of inflation, just filling the gap between the front end of the inner core 8 and the anal canal part 63 of the anal dilator 6, so that the front end of the anal dilator 6 is bullet-shaped.

[0096] Further, the patient takes a left lateral position, the front end of the anal dilator 6 combined with the inflated inner core 8 is smeared with lubricant, the right hand holds the hand-held part 65 of the anal dilator 6, and the hand-held part 865 of the hand lever of the piston device 86 is pressed with the palm, the right hip is pulled apart with the thumb and index finger of the left hand, the anal orifice is exposed, the anal sphincter is relaxed by massaging the anal verge with the inner core head end 81 in the anal dilator 6, and then the anal canal part 63 of the anal dilator 6 and the inner core head end 81 and the air bag 82 are slowly inserted towards the navel direction, and when passing through the anal canal, the direction is changed to the sacral notch to enter the rectal ampulla, and attention is paid to the fact that the anal canal part 63 of the anal dilator 6 cannot be completely inserted into the anal canal at this time, so as to prevent deep insertion, damage to the intestinal wall, and even perforation, and also prevent the anal dilator 6 from sliding into the rectum.

[0097] The complete device is designed for endoscopic internal hemorrhoid ligation treatment.

[0098] The cap at the trocar port 71 is removed, the biopsy forceps are inserted retrograde from the lens biopsy port, and the biopsy forceps are extended from the trocar port 71, the release pull ring 34 of the release pulling device 3 is clamped with the biopsy forceps, is brought into the trocar 74, is taken out from the lens biopsy port, the conversion device 2 is installed at the trocar port 71, the trocar cap is installed on the conversion outer port 25 of the conversion device 2, the release pull ring 34 is passed through the release lead ring 16, and then the ligator body 1 is pulled out from the release pull ring 34, the ligator body 1 is pulled straight away from the lens direction, the release pull ring 34 and the release lead ring 16 are connected, the lens 72 is inserted into the lens connection cap 17 of the ligator body 1 through the lens insertion port 111, the fixer 4 conical cap 46 is pushed towards the conversion outer port 25, the release baffle 12 is completely retracted into the groove 13 after the surface mark position of the fixing groove 32, the fixer 4 conical cap 46 is continuously pushed slightly towards the conversion outer port 25, the fixing wing 42 is loosened after the fixing groove 32, the conical cap 46 is pressed, the conical cap 46 gradually moves downwards to open the two sides of the movable wing 43, the two sides of the fixing wing 42 are retracted by the fixed stake 44 by using the lever principle, at this time, the fixer 4 is in a free state, the fixer 4 is moved towards the conversion inner port 26, the release pull ring 34 is loosened, the release baffle 12 is popped out by using the release spring 14, the conical cap 46 is loosened, at this time, the rebounding force of the rebound spring 48 pops out the conical cap 46 from the center of the two sides of the movable wing 43, at this time, the two sides of the fixing wing 42 are popped open by using the elastic force of the opening spring 47, and at this time, the fixer 4 is loosened, the two sides of the fixing wing 42 are clamped in the fixing groove 32 again, and the fixing effect is achieved.

[0099] Next, install the elastic ligation device 5, install the elastic ligation body 51 and the push knot auxiliary line 56 on the release baffle 12, and hook the push knot auxiliary line 56 with the push knot rod inner core 58, and push it in the push knot rod outer sleeve 57, gently pull the push knot rod inner core 58 out, so that the elastic ligation body 51 is gently fixed on the release baffle 12. At this time, the endoscope 7 and the ligator body 1, the elastic ligation body 51, the conversion device 2, and the release pulling device 3 are placed aside for use.

[0100] Next, insert the anal dilator 6 into the anus with the inner core 8 for observation, and after removing the inner core 8 according to the steps, the assistant holds the anal dilator 6, the operator inserts the endoscope 7 with the pre-connected ligator body 1 and elastic ligation body 51 into the anal dilator inner opening 61, then slowly withdraws the mirror to the anal canal part 63 and the hand-held part 65, at this time the push knot auxiliary line 56 can be seen, at this time the operator holds the mirror body and the hand-held part 65 of the anal dilator 6 with the right hand, and the assistant first inserts the push knot rod inner core 58 into the push knot rod outer sleeve 57, and then completely exposes the hook at one end of the push knot rod inner core 58 outside the push knot end 59, then inserts the push knot rod through the auxiliary opening 64 of the anal dilator 6, hooks the push knot auxiliary line 56 and pulls it out of the anus through the auxiliary opening 64, and takes off the push knot auxiliary line 56 from the hook of the push knot rod inner core 58. At this time, the operator holds the hand-held part 65 of the anal dilator 6 and the mirror body of the endoscope 7 with the right hand, rotates the anal dilator 6, and rotates the required internal hemorrhoids to the observation window 62.

[0101] Next, the operator continues to advance the scope, using the suction port 11 of the ligator body 1 to fully suction the internal hemorrhoids within the observation window 62. When the scope screen displays a full view, the mirror body is relatively stable due to the negative pressure suction state, and the operator can release the mirror body with the right hand to push the fixator 4 towards the conversion outer port 25. When the push is blocked, the fixator 4 reaches the front recording position. At this time, the release flap 12 is completely retracted into the groove 13, and the elastic ligature body 51 is released. The operator's right hand simultaneously holds the mirror body of the endoscope 7 and the hand-held portion 65 of the anal dilator 6. The assistant hooks the push knot auxiliary line 56 outside the auxiliary port 64 with the push knot rod, gradually pulls the push knot rod inner core 58 outward, and slowly pushes the push knot rod outer sleeve 57 through the push knot end 59 from the auxiliary port 64 inward. When the push knot rod outer sleeve 57 has resistance, the push knot rod inner core 58 is appropriately pulled outward at this time, which can tighten the elastic ligature body 51. Then, the push knot rod inner core 58 is loosened from the push knot auxiliary line 56, the push knot rod outer sleeve 57 is taken out along the auxiliary port 64, the push knot auxiliary line 56 is cut outside the auxiliary port 64 with scissors, and a single strand is pulled out from the auxiliary port 64. At this time, the internal hemorrhoid ligation is completed. The endoscopic injection needle is inserted from the conversion outer port 25, passes through the conversion device inner channel 23 of the conversion device 2, and is inserted into the endoscopic forceps channel 74. The endoscopic biopsy port of the endoscope 7 is extended to perform sclerotherapy on the internal hemorrhoid ligation mucosa ball. At this time, the internal hemorrhoid ligation operation is completed. If further ligation and sclerotherapy of other internal hemorrhoids are needed, the above operation can be repeated.

[0102] Next, when the internal hemorrhoid ligation operation is completed, the anal dilator 6 and the endoscope 7 are removed from the anus. The fixator 4 conical cap 46 is slightly pushed towards the conversion outer port 25. When the fixing wing 42 is loosened from the fixing groove 32, the conical cap 46 is pressed and gradually moves downward to spread the two side movable wings 43. Through the fixing post 44, the two side fixing wings 42 are retracted using the lever principle. At this time, the fixator 4 is in a free state, and the fixator 4 is moved towards the conversion inner port 26 to the position closest to the conversion inner port 26. The conical cap 46 is released, and the rebounding force of the rebound spring 48 causes the conical cap 46 to pop out from the center of the two side movable wings 43. At this time, the two side fixing wings 42 are popped open by the elastic force of the spreading spring 47. When the fixator 4 is loosened, the two side fixing wings 42 are again clamped in the fixing groove 32, serving as a fixing function. The ligator body 1 is removed from the lens 72, the pull ring 34 is reversely sleeved out of the ligator body 1, and the release lead ring 16 and the pull ring 34 are separated. Further, the conversion device 2 is removed from the forceps port 71. At this time, the operation is completed.

[0103] The above is a further detailed description of the provided technical solutions in combination with the preferred embodiments of the present application, and cannot be deemed as a limitation on the specific implementation of the present application. For those skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or replacements can be made, which shall be deemed as falling within the protection scope of the present application.

Claims

1. An endoscopic internal hemorrhoid ligator characterized by: The device comprises a ligator body, a conversion device, a release pulling device and a elastic ligature device; The ligator body is at least partially transparent, has a working channel inside, and is provided with a movable component at the front end for bearing the elastic ligature device, the movable component being movable relative to the ligator body, and the rear end of the ligator body being used for connecting an endoscope; The conversion device is used for connecting a channel port and a channel cap of the endoscope, and provides an operation channel for the endoscope instrument; The release pulling device is fixed on the conversion device, and is operatively connected to the movable component of the ligator body, and is used for driving the movable component to perform a release action, so that the elastic ligature device is separated from the movable component; The release pulling device comprises a lead channel, a fixing groove, a pulling wire and a fixator, the lead channel and the fixing groove are arranged on one side of the conversion device close to the channel port, the fixator is movably arranged in the fixing groove, and the fixator is connected to the pulling wire, The pulling wire passes out of the fixing groove, passes through the lead channel, passes out of the conversion device, passes through the channel port and the channel, and is connected to the ligator body, the fixing groove and the fixator are matched with each other through a locking mechanism, so that the fixator can realize a switchable moving state and a fixed locking state in the fixing groove, so that the pulling of the movable component can be realized by adjusting the position of the fixator; The elastic ligature device is arranged on the movable component, and is used for ligating internal hemorrhoids after being separated.

2. The internal hemorrhoid ligator for endoscope according to claim 1, characterized in that: The front end of the ligator body is provided with a groove, the movable component is a release baffle which is slidably arranged in the groove, and an elastic element is arranged between the release baffle and the bottom of the groove.

3. The internal hemorrhoid ligator for endoscope according to claim 1, characterized in that: The locking mechanism comprises a sawtooth structure and a locking assembly which are matched with each other, the sawtooth structure is arranged on the fixing groove, and the locking assembly is arranged on the fixator.

4. The internal hemorrhoid ligator for endoscope according to claim 3, characterized in that: The locking assembly comprises a pair of rotatable clamping arms and a driving member, the movement of the driving member can control the opening and closing of the clamping arms, and the clamping arms are engaged with the sawtooth structure in the closing state to realize fixation.

5. The internal hemorrhoid ligator for endoscope according to claim 1, characterized in that: The elastic ligature device comprises a preset elastic ligature loop and a push knot rod connected thereto, and the push knot rod is used for guiding and assisting the elastic ligature loop to be tightened after being separated.

6. The internal hemorrhoid ligator for endoscope according to claim 5, characterized in that: The elastic ligature loop adopts a knot which can be pulled and tightened.

7. The internal hemorrhoid ligator for endoscope according to claim 6, characterized in that: One end of the knot of the elastic ligature loop is provided with a connecting part which is convenient for being connected to the push knot rod.

8. The internal hemorrhoid ligator for endoscope according to claim 5, characterized in that: The push knot rod comprises an elongated rod body, and a functional part is arranged at the distal end of the rod body for capturing or connecting the elastic ligature loop.

9. The internal hemorrhoid ligator for endoscope according to claim 1, characterized in that: The anus dilator also comprises an inner core which can be placed in the channel of the anus dilator, and a fillable fixing part is arranged at the distal end of the inner core.

10. The internal hemorrhoid ligator for endoscope according to claim 9, characterized in that: The proximal end of the anus dilator is provided with a sealing element.

11. The internal hemorrhoid ligator for endoscope according to claim 9, characterized in that: ​ 12. The internal hemorrhoid ligator for endoscope according to claim 9, characterized in that: ​

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