Endoscopic incision device

Abstract

The present application relates to the technical field of medical devices, and discloses an endoscopic incision device, comprising a control handle, an endoscope tube, a catheter, a cutting wire, a control component and a positioning airbag; the control handle is connected to the proximal end of the endoscope tube, the endoscope tube is provided with a pipe for accommodating a catheter along its length direction, and an opening for extending the catheter is provided on the distal side wall of the endoscope tube; a first channel and a second channel are provided in the catheter, the cutting wire is provided in the first channel, and the cutting wire has a cutting section that can extend out of the outside of the catheter at the distal end of the catheter; the control component can control the cutting section to move in a direction away from the side wall of the catheter; the positioning airbag is provided on the outer wall of the distal end of the catheter away from the cutting section; the internal space of the positioning airbag is connected to the second channel, and the present application can accurately control the incision depth of the duodenal papilla sphincter.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an endoscopic incision device. Background Art

[0002] Endoscopic retrograde cholangiopancreatography (ERCP) refers to a surgical procedure in which a guidewire or related instruments are inserted into the common bile duct or pancreatic duct through the duodenal papilla. Endoscopic sphincterotomy (EST) is a clinical procedure that uses endoscopic retrograde cholangiopancreatography (ERCP) technology to cut the duodenal sphincter with a high-frequency electric knife under the endoscope to expand the bile duct opening. EST can expand the duodenal papilla opening to remove stones in the common bile duct or pancreatic duct.

[0003] During the stone removal operation, after the ERCP angiography is completed, the catheter with the cutting wire is passed through the endoscope and passed through the duodenal papilla; then the cutting wire is stretched outward to bend the front end of the catheter into an arch shape, exposing the cutting wire, and a high-frequency current is passed through the cutting wire, so that the front end of the catheter and the cutting wire form a cutter; then, the inner diameter is moved outward to cut the duodenal papilla sphincter. When cutting, by pulling out the endoscope, the cutter is driven in the direction of the cutting wire, that is, towards the side wall of the duodenal papilla sphincter, and its side wall is cut to a certain depth; so that the stone can pass smoothly through the opening of the duodenal papilla.

[0004] Regarding the above-mentioned related technologies, the method of moving the cutter by moving the endoscope is difficult to control and it is difficult to grasp the cutting depth, which places very high demands on the operator; in the process of moving the endoscope, it is also possible that the catheter may slip out of the duodenal papilla, causing the cutter to shift. Therefore, the existing cutting method is difficult to operate and the cutting depth is difficult to grasp. Summary of the invention

[0005] In order to accurately control the incision depth of the duodenal papillary sphincter, the present application provides an endoscopic incision device.

[0006] The present application provides an endoscopic incision device, which adopts the following technical solution:

[0007] An endoscopic cutting device comprises a control handle, an endoscope tube, a catheter, a cutting wire, a control component and a positioning airbag; the control handle is connected to the proximal end of the endoscope tube, the endoscope tube is provided with a pipe for accommodating a catheter along its length direction, and an opening for the catheter to extend out is provided on the distal side wall of the endoscope tube; a first channel and a second channel are provided in the catheter, the cutting wire is provided in the first channel, and the cutting wire has a cutting section that can extend out of the outside of the catheter at the distal end of the catheter; the control component can control the cutting section to move in a direction away from the side wall of the catheter; the positioning airbag is provided on the outer wall of the distal end of the catheter away from the cutting section; the internal space of the positioning airbag is connected to the second channel.

[0008] By adopting the above technical solution, the catheter can be inserted into the duodenal papilla with the cooperation of the endoscope tube; when the catheter is inserted to a certain depth, the cutting section reaches the duodenal papilla, that is, reaches the cutting position; then, the cutting section is moved to the outside of the catheter through the control component, so that the cutting section can contact the duodenal papilla sphincter, and the cutting wire is passed through a high-frequency current to cut the sphincter; at the same time, the catheter can be driven to move in the direction of the cutting wire by inflating the airbag in the slot positioning, thereby driving the cutting wire to continuously move in the direction of the sphincter, and deepening the incision;

[0009] The above method of controlling the incision depth by moving the cutting knife with the positioning air bag is more convenient and accurate in controlling the incision. In combination with the previous angiography, the size of the stones in the common bile duct or pancreatic duct can be judged and the inflation volume of the positioning air bag can be set accordingly, so that the incision depth can be as shallow as possible and the wound area can be reduced. At the same time, because the positioning air bag can squeeze the sphincter outward when it expands, it can also achieve the effect of cutting and expanding the sphincter at the same time.

[0010] Optionally, the control assembly includes a first control rod, a second control rod and a sliding block, and one end of the first control rod and the second control rod are each provided with a positioning ring, the cutting wire can pass through the two positioning rings in sequence, and the cutting section is located between the two positioning rings; a guide groove for the first control rod and the second control rod to slide horizontally is provided in the conduit, and a sliding groove for the sliding block to move vertically is provided in the conduit, and when the cutting section is located in the first channel, one end of the first control rod and the second control rod away from the positioning ring both extend into the sliding groove, and the sliding block is chamfered on one side facing the first control rod and the second control rod.

[0011] By adopting the above technical solution, the combination of the first control rod, the second control rod and the sliding block realizes effective control of the wire cutting section; the positioning ring ensures that the wire cutting can be driven to move stably, and the design of the guide groove and the sliding groove enables the control rod and the sliding block to move accurately, thereby controlling the extension and retraction of the cutting section.

[0012] Optionally, the sliding groove is opened at the distal end of the sliding block, and the control component also includes a return spring and a control wire, the return spring is arranged in the sliding groove and connected to the distal end of the sliding block, and a third channel is also opened in the catheter, the control wire is arranged in the third channel, and the control wire is connected to the proximal end of the sliding block.

[0013] By adopting the above technical solution and adding the reset spring and the control wire, the sliding block can be automatically reset and accurately controlled under the operation of the control handle.

[0014] Optionally, the control handle is provided with an opening connected to the pipe; one end of the conduit extending out of the opening is connected to the adjustment handle, and a third pipe opening connected to the third channel is provided on the side wall of the adjustment handle, and the control wire is passed through the third pipe opening and is connected to a third control plate.

[0015] By adopting the above technical solution, the opening on the control handle and the design of the adjustment handle allow the doctor to easily operate the entire device; the opening of the third tube opening provides an outlet for the control wire and is connected to the third control plate, thereby realizing remote control of the sliding block.

[0016] Optionally, the third pipe mouth end surface is provided with a slot for the third control piece to be plugged in, and the third pipe mouth end surface is also provided with a card slot for the third control piece to be plugged in. When the third control piece is plugged into the slot, the sliding block is located at the distal end of the sliding slot; when the control piece is plugged into the card slot, the sliding block is located at the proximal end of the sliding slot.

[0017] By adopting the above technical solution and the design of the slot and the card slot, the third control piece can be conveniently plugged in and fixed, thereby achieving precise control of the position of the sliding block.

[0018] Optionally, a first pipe opening connected to the first channel is provided on the side wall of the adjustment handle, and the cut wire passes through the first pipe opening and is connected to a first control sheet.

[0019] By adopting the above technical solution, the first control piece is connected to the cutting wire, so that the doctor can conveniently control the extension and retraction of the cutting wire; this design improves the controllability of the cutting operation.

[0020] Optionally, the positioning balloon is circumferentially arranged along the side wall of the catheter, and when the positioning balloon is inflated, the cross-section of the positioning balloon is arc-shaped.

[0021] By adopting the above technical solution, the positioning balloon is arranged circumferentially along the side wall of the catheter. When inflated, its cross-section is arc-shaped, which can better fit the tissue surface. At the same time, when it expands toward the arc, it can stably push the catheter toward the cutting section, thereby improving the stability and cutting accuracy of the device.

[0022] Optionally, the positioning airbag is arranged in a circumferential direction along the side wall of the guide tube, and the positioning airbag includes a power chamber located on the side of the catheter away from the cutting section, and also includes positioning chambers located on the other two sides of the catheter. The spaces in the two positioning chambers are connected to the second channel. There is a partition wall between the positioning chamber and the power chamber, and a vent hole is opened on the partition wall. When the positioning airbag is not inflated, the partition wall is wrinkled.

[0023] By adopting the above technical solution, the positioning airbag includes a power chamber and a positioning chamber. In this method, air is first inflated into the positioning chamber, and the position of the catheter can be preliminarily located through the two positioning chambers to limit the sliding and rotation of the catheter; then the air is continued to be inflated, and the cutting section is pushed in conjunction with the power chamber, which makes the cutting process more stable and accurate.

[0024] In summary, the present application includes at least one of the following beneficial effects:

[0025] 1. The positioning balloon pushes the catheter and cutting segment to move, and the incision depth of the sphincter can be accurately controlled;

[0026] 2. Through the coordination between the control wire and the cutting wire, the cutting section can be conveniently controlled to be separated from the catheter or stored on the catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of the structure of the duodenal papilla;

[0029] Figure 3 is a schematic diagram of the cross-sectional structure at the distal end of the catheter;

[0030] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0031] Figure 5 It is a schematic diagram of the structure of the adjustment handle;

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the first positioning airbag;

[0033] Figure 7 It is a schematic diagram of the cross-sectional structure of the second positioning airbag.

[0034] Explanation of the accompanying drawings: 101, duodenum; 102, common bile duct; 103, pancreatic duct; 104, intubation channel; 1, control handle; 2, endoscope tube; 3, catheter; 31, first channel; 32, second channel; 33, third channel; 4, shredded; 41, cutting section; 42, first control plate; 5, control assembly; 51, first control rod; 511, positioning ring; 52, second control rod; 53, sliding block; 54, control wire; 541, third control plate; 55, return spring; 6, positioning airbag; 61, power chamber; 62, positioning chamber; 63, partition wall; 64, vent; 7, adjustment handle; 71, first pipe opening; 72, second pipe opening; 73, third pipe opening; 731, slot; 732, card slot. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The embodiment of the present application discloses an endoscopic cutting device, which is mainly used to solve the problem that in the operation of cutting the sphincter of the duodenal papilla 101, the cutting knife is driven to move by controlling the endoscope tube 2, thereby controlling the position and depth of the sphincter cutting, and the operation is difficult and the cutting depth is difficult to control.

[0037] For ease of understanding, unless otherwise specified, in this application, “proximal end” refers to an end relatively close to an operator; and “distal end” refers to an end relatively far from an operator.

[0038] Reference Figure 1 The endoscopic cutting device comprises a control handle 1, an endoscope tube 2, a catheter 3, a shredder 4, a control component 5 and a positioning balloon 6. The control handle 1 is connected to the proximal end of the endoscope tube 2. The control handle 1 is provided with a handle for easy gripping and a plurality of operating parts for manipulating the endoscope tube 2. The endoscope tube 2 is a hose and can be inserted into the duodenum 101 from the oral cavity. A camera is generally provided at the distal end of the endoscope tube 2 to facilitate observation of the situation in the duodenum 101. A pipeline for accommodating the catheter 3 is provided inside the endoscope tube 2 along its length direction. An opening for the catheter 3 to extend is also provided on the distal side wall of the endoscope tube 2. When the endoscope tube 2 reaches the duodenum 101, the position of the duodenal papilla 101 is determined by observation, and then the opening at the distal end of the endoscope tube 2 is aligned with the opening of the duodenal papilla 101, and the catheter 3 is controlled to continuously insert the catheter 3 into the pipeline, and the catheter 3 can be inserted into the duodenal papilla 101 along the opening.

[0039] Reference Figure 2 In the human body structure, the duodenal papilla 101 is located on the side wall of the duodenum 101, the common bile duct 102 and the pancreatic duct 103 meet at the duodenal papilla 101, and form a common duct, which is hereinafter referred to as the cannula channel 104. The end of the cannula channel 104 away from the common bile duct 102 and the pancreatic duct 103 is inwardly contracted to form the duodenal papilla 101. When the catheter 3 is inserted into the duodenal papilla 101, its end enters the cannula channel 104.

[0040] Reference Figure 2 and Figure 3 In this embodiment, a first channel 31 and a second channel 32 are provided in the catheter 3. The first channel 31 is used to install the cutting wire 4, and the second channel 32 is used to deliver gas to the positioning airbag 6. Specifically, the cutting wire 4 is arranged in the first channel 31, and has a cutting section 41 that can extend out of the outside of the catheter 3 at the distal end of the catheter 3. The control component 5 can control the cutting section 41 to move away from the side wall of the catheter 3, so that the cutting section 41 is located on one side of the catheter 3 and forms a gap with the side wall of the catheter 3. When the cutting wire 4 is close to the papillary sphincter of the duodenum 101, the sphincter can be cut by applying a high-frequency current to the cutting wire 4.

[0041] Reference Figure 3 In this embodiment, the positioning airbag 6 is arranged on the outer wall of the pipe and is located on the side of the pipe away from the cutting section 41; the positioning airbag 6 is made of elastic material, and its inner side is connected to the second channel 32. When not inflated, the positioning airbag 6 is attached to the catheter 3 and can enter the intubation channel 104 along with the catheter 3. In other embodiments, in order to better install the positioning airbag 6, a groove for embedding the positioning airbag 6 can be provided on the outer wall of the catheter 3. Insert the catheter 3 into the insertion channel 104, then move the catheter 3 to the position where the positioning balloon 6 and the cutting segment 41 are facing the sphincter of the duodenal papilla 101, and extend the cutting segment 41 out of the catheter 3, thus preparing to cut the sphincter; then pass a high-frequency current through the cutting wire 4, and send gas into the second channel 32 to inflate the positioning balloon 6. After the positioning balloon 6 is inflated, it can push the catheter 3 in the opposite direction, that is, towards the direction of the cutting segment 41, so that the cutting segment 41 continues to cut the sphincter deeply; when the positioning balloon 6 is inflated, the cutting work of the duodenal papilla 101 is completed.

[0042] The positioning balloon 6 cooperates with the cutting section 41 of the shredder 4 to cut the duodenal papilla 101. Compared with the cutting method in the prior art, it avoids the difficulty in judging the cutting depth when moving the endoscope tube 2, and there is also the hidden danger of causing the catheter 3 to slip out of the cutting channel; at the same time, in conjunction with the previous angiography, the size of the stone in the common bile duct 102 or the pancreatic duct 103 can be judged, and the inflation volume of the positioning balloon 6 can be preset accordingly; so that the cutting depth of the sphincter can be accurately judged, and the surgical effect can be achieved with the smallest wound. Since the positioning balloon 6 can squeeze the sphincter outward when it expands, it can also play the effect of cutting and expanding the sphincter at the same time. When the cutting is completed and the stone is removed, since the sphincter has been expanded by the positioning balloon 6, the stone removal process is smoother.

[0043] Reference Figure 3 and Figure 4 In this embodiment, the control assembly 5 includes a first control rod 51, a second control rod 52 and a sliding block 53, wherein the first control rod 51 and the second control rod 52 are both arranged along the direction perpendicular to the conduit 3, and a positioning ring 511 is fixed to the end close to the cut wire 4, the first control rod 51 and the second control rod 52 are arranged at intervals along the length direction of the conduit 3, and the cut wire 4 passes through the two positioning rings 511 in sequence, and the cut wire 4 between the two positioning rings 511 is the cutting section 41. The conduit 3 is provided with a sliding groove for the sliding block 53 to slide along its length direction, and when the sliding block 53 slides to the side of the first control rod 51 and the second control rod 52 away from the cut wire 4, it can drive the ends of the first control rod 51 and the second control rod 52 to slide out of the conduit 3, that is, the cutting section 41 moves toward the outside of the conduit 3.

[0044] Correspondingly, a guide groove for the first control rod 51 and the second control rod 52 to slide horizontally is provided in the catheter 3; in order to ensure the stability of the first control rod 51 and the second control rod 52 when sliding, the shaft parts of the first control rod 51 and the second control rod 52 are preferably set as rectangular rods. The sliding block 53 is also set as a rectangular block, and a chamfer is provided on the side wall of one end of the sliding block 53 facing the first control rod 51 and the second control rod 52; in the initial state, the ends of the first control rod 51 and the second control rod 52 away from the positioning ring 511 are located in the sliding groove; when the sphincter needs to be cut, the sliding block 53 is controlled to slide, and the chamfered part of the sliding block 53 first abuts against the first control rod 51 and the second control rod 52, and drives it to move toward the positioning ring 511.

[0045] Reference Figure 3 and Figure 4In this embodiment, the control component 5 also includes a return spring 55 and a control wire 54. The return spring 55 is arranged in the sliding groove, and one end of the return spring 55 is fixed to the distal end of the sliding groove, and the other end is fixed to the side wall of the distal end of the sliding block 53; a third channel 33 for installing the control wire 54 is opened in the catheter 3, and the distal end of the control wire 54 is connected to the proximal end of the sliding block 53, so that the sliding block 53 can be driven to slide by pulling the control wire 54.

[0046] Reference Figure 1 and Figure 5 In this embodiment, the proximal end of the catheter 3 is connected to an adjustment handle 7, and the adjustment handle 7 is located outside the control handle 1. The side wall of the adjustment handle 7 is provided with a first pipe opening 71 connected to the first channel 31, a second pipe opening 72 connected to the second channel 32, and a third pipe opening 73 connected to the third channel 33. Among them, the wire cutter 4 extends out of the catheter 3 from the first pipe opening 71. In order to facilitate the movement and control of the wire cutter 4, one end of the first pipe opening 71 where the wire cutter 4 is passed can be connected to the first control plate 42, and the first control plate 42 is preferably made of insulating material. Optionally, in order to facilitate power supply, a connecting component for connecting to electricity (not shown in the figure) can also be provided on the wire cutter 4. The second pipe opening 72 is connected to the positioning airbag 6, and the second pipe opening 72 is preferably set to a structure that is convenient for connecting to an inflatable device.

[0047] Reference Figure 1 and Figure 5 In this embodiment, the third tube opening 73 is provided at the proximal end of the traction wire, and a third control piece 541 is connected to the outside of the third tube opening 73. The third control piece 541 includes a rectangular piece portion connected to the traction wire, and a handle portion for convenient operator control. The end surface of the third tube opening 73 is provided with a slot 731 for the rectangular piece portion of the third control piece 541 to be plugged in, and a card slot 732 is provided. The slot 731 and the card slot 732 are staggered in their opening positions, and the extension length of the slot 731 is greater than the card slot 732. When the third control piece 541 is inserted into the slot 731, the sliding block 53 connected to the distal end of the traction wire is located at the distal end of the sliding groove, and the end portions of the first control rod 51 and the second control rod 52 are located in the sliding groove; when the traction wire is slid outward through the third control piece 541, the sliding block 53 is driven to slide toward the proximal end of the sliding groove, driving the first control rod 51 and the second control rod 52 to slide outward; when the control piece is added to the slot 732, the sliding block 53 is still located at the proximal end of the sliding groove, and the slot 732 can play a role in positioning the control piece.

[0048] Reference Figure 1 and Figure 6The positioning balloon 6 can adopt different shapes and structures. In an optional embodiment, the positioning balloon 6 can adopt the first shape. Specifically, the positioning balloon 6 is arranged circumferentially along the side wall of the catheter 3. When the positioning balloon 6 is inflated, its cross section is arc-shaped, which can be inflated more stably and stably push the cutting section 41 toward the sphincter. This design has a simple structure and precise control, and can accurately grasp the cutting depth.

[0049] Reference Figure 7 In another optional embodiment, the positioning airbag 6 can adopt the second shape. Specifically, the positioning airbag 6 can adopt a multi-stage design. The positioning airbag 6 is arranged circumferentially along the side wall of the guide tube as a whole, and includes a power chamber 61 and a positioning chamber 62 inside. The power chamber 61 is located on the side of the catheter 3 away from the cutting section 41. The positioning members are located on both sides of the power chamber 61, and the second channel 32 is connected to the two positioning chambers 62. The second channel 32 is divided into two at the distal end of the catheter 3, and is respectively connected to the two positioning chambers 62. There is a partition wall 63 between the positioning chamber 62 and the power chamber 61, and a vent hole 64 is opened on the partition wall 63. When the airbag is not inflated, the partition wall 63 is in a wrinkled state. At the same time, the entire positioning airbag 6 fits on the side wall of the catheter 3, so that the catheter 3 can pass through the duodenal papilla 101 smoothly. When the airbag is inflated, the gas first enters the two positioning cavities 62 along the second channel 32, causing the airbag wall at the location of the positioning cavity 62 to expand and fit closely to the side wall of the duodenal papillary sphincter 101, thereby preliminarily positioning the entire catheter 3 to prevent the catheter 3 from rotating or slipping, thereby improving the stability of the cutting process; the inflation continues, and the wrinkled portion of the isolation wall 63 is stretched open, exposing the vent 64, and the gas enters the power cavity 61 from the vent 64, and the positioning cavity 62 and the power cavity 61 continue to expand, i.e., they can begin to push the catheter 3 toward the cutting section 41, thereby cutting the sphincter to a certain depth.

[0050] The implementation principle of an endoscopic cutting device in the embodiment of the present application is as follows: when cutting the duodenal papilla 101, first extend the endoscope tube 2 into the body and make it reach the duodenum 101; then find the location of the duodenal papilla 101 and align the opening on the side wall of the endoscope tube 2 with it; then continuously insert the catheter 3 into the channel so that the distal end of the catheter 3 is inserted into the duodenal papilla 101, and the cutting section 41 of the shredder 4 and the positioning balloon 6 are located opposite to the opening of the duodenal papilla 101; then pull The third control piece 541 is moved to drive the sliding block 53 to slide, so that the first control rod 51 and the second control rod 52 slide out, and drive the cutting section 41 to form a gap with the side wall of the catheter 3, and at the same time the third control piece 541 is inserted into the card slot 732 for positioning; finally, the cutting wire 4 can be passed through high-frequency electricity, and inflated toward the second pipe, and the specific inflation amount is determined according to the size of the stone measured during angiography; when the positioning balloon 6 is inflated, the cutting section 41 completes the incision of the duodenal papillary sphincter 101.

[0051] After the cutting is completed, it is only necessary to adjust the third control piece 541 and insert it into the slot 731. The sliding block 53 will slide back to the far end of the sliding slot under the action of the reset spring 55. Then, the cut wire 4 is pulled outward to make the cut wire 4 straight, and the first control rod 51 and the second control rod 52 can be simultaneously driven to slide into the catheter 3 for storage. At this time, the catheter 3 can be pulled out.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An endoscopic incision device, characterized in that: The invention comprises a control handle (1), an endoscope tube (2), a catheter (3), a cutting wire (4), a control component (5) and a positioning airbag (6); the control handle (1) is connected to the proximal end of the endoscope tube (2); the endoscope tube (2) is provided with a pipeline for accommodating the catheter (3) along its length direction; the distal side wall of the endoscope tube (2) is provided with an opening for the catheter (3) to extend out; the catheter (3) is provided with a first channel (31) and a second channel (32); the cutting wire (4) is arranged in the first channel (31); the cutting wire (4) has a cutting section (41) at the distal end of the catheter (3) that can extend out of the outside of the catheter (3); the control component (5) can control the cutting section (41) to move in a direction away from the side wall of the catheter (3); the positioning airbag (6) is arranged on the outer wall of the distal end of the catheter (3) away from the cutting section (41); the internal space of the positioning airbag (6) is connected to the second channel (32); The positioning airbag (6) is circumferentially arranged along the side wall of the catheter (3), and the positioning airbag (6) includes a power chamber (61) located on the side of the catheter (3) away from the cutting section (41), and also includes positioning chambers (62) located on the other two sides of the catheter (3). The spaces in the two positioning chambers (62) are both connected to the second channel (32). A partition wall (63) is provided between the positioning chamber (62) and the power chamber (61), and a vent hole (64) is provided on the partition wall (63). When the positioning airbag (6) is not inflated, the partition wall (63) is in a wrinkled shape.

2. An endoscopic incision device according to claim 1, characterized in that: The control assembly (5) comprises a first control rod (51), a second control rod (52) and a sliding block (53); one end of each of the first control rod (51) and the second control rod (52) is provided with a positioning ring (511); the cut wire (4) can pass through the two positioning rings (511) in sequence, and the cutting section (41) is located between the two positioning rings (511); a guide groove for the first control rod (51) and the second control rod (52) to slide horizontally is provided in the guide tube (3); a sliding groove for the sliding block (53) to move vertically is provided in the guide tube (3); when the cutting section (41) is located in the first channel (31), one end of each of the first control rod (51) and the second control rod (52) away from the positioning ring (511) extends into the sliding groove; and a chamfer is provided on one side of the sliding block (53) facing the first control rod (51) and the second control rod (51).

3. An endoscopic incision device according to claim 2, characterized in that: The sliding groove is opened at the distal end of the sliding block (53), and the control component (5) further includes a return spring (55) and a control wire (54). The return spring (55) is arranged in the sliding groove and is connected to the distal end of the sliding block (53). A third channel (33) is also opened in the catheter (3), and the control wire (54) is arranged in the third channel (33), and the control wire (54) is connected to the proximal end of the sliding block (53).

4. An endoscopic incision device according to claim 3, characterized in that: The control handle (1) is provided with an opening connected to the pipeline; one end of the conduit (3) extending through the opening is connected to an adjustment handle (7); a third pipe opening (73) connected to the third channel (33) is provided on a side wall of the adjustment handle (7); the control wire (54) passes through the third pipe opening (73) and is connected to a third control sheet (541).

5. An endoscopic incision device according to claim 4, characterized in that: The end surface of the third pipe opening (73) is provided with a slot (731) for the third control piece (541) to be inserted into, and the end surface of the third pipe opening (73) is also provided with a clamping slot (732) for the third control piece (541) to be inserted into. When the third control piece (541) is inserted into the slot (731), the sliding block (53) is located at the distal end of the sliding slot; when the control piece is inserted into the clamping slot (732), the sliding block (53) is located at the proximal end of the sliding slot.

6. An endoscopic incision device according to claim 4, characterized in that: A first pipe opening (71) in communication with the first channel (31) is provided on the side wall of the adjusting handle (7), and the cut wire (4) passes through the first pipe opening (71) and is connected to a first control sheet (42).

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