Auxiliary clip for mucous membrane dissection under endoscope

Abstract

The invention discloses an endoscopic mucous membrane dissection auxiliary clamp which comprises an outer sheath tube, and a dissection mechanism used for automatically winding a mucous membrane is arranged on one side of the outer sheath tube; the stripping mechanism comprises a tool bit, a clamping arm assembly used for clamping and locking the mucous membrane is arranged in the tool bit, a connecting rod is arranged on one side of the tool bit and rotationally arranged in a mounting opening, the mounting opening is formed in a release ring, a volute spiral spring is arranged on the outer surface of the connecting rod, one end of the volute spiral spring is connected with the mounting opening, and the other end of the volute spiral spring is connected with the release ring. The release ring is arranged in the outer sheath tube, and the release ring can be detachably connected with the outer sheath tube; a multi-stage operation mechanism used for adjusting the clamping force and the rotary winding force of the clamping arm assembly is further arranged in the outer sheath tube, mucous membranes around a focus can be clamped and fixed, meanwhile, the mucous membranes can be automatically wound and stripped, the mucous membranes around the focus can be completely stripped through release of the multiple stripping mechanisms, and the operation efficiency is improved. And the maximization of the surgical field is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an auxiliary clip for endoscopic mucosal dissection. Background Art

[0002] ESD (endoscopic submucosal dissection) surgery is a procedure that uses special surgical tools and electrocautery forceps to remove cancerous lesions and their surrounding mucosa and submucosal layers under the guidance of an endoscope. This surgery can preserve the patient's organ function and reduce trauma, while completely removing the cancer and improving the cure rate. Generally, a retractor or traction device is used to remove the mucosa during the operation.

[0003] For example, the invention with announcement number CN113397695A discloses a magnetic traction surgical device for endoscopic mucosal dissection, which includes a high-frequency electric knife for cutting the mucosa and a metal clip for clamping the mucosa. The working end of the high-frequency electric knife and the metal clip are respectively provided with a first magnet and a second magnet that repel each other. By utilizing the mutual repulsion between the magnetic poles of the first magnet and the second magnet, the metal clip is clamped at the mucosal incision as an auxiliary device. During the operation, the high-frequency electric knife is operated to perform the operation, and the metal clip is automatically repelled by the magnet on the high-frequency electric knife, and then the mucosa is lifted up to achieve a traction effect, thereby improving the surgical vision. The endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa, and the endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa. The endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa, and the endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa. The endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa, and the endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa. The endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa, and the endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa. The endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa, and the endoscopic mucosal stripping auxiliary clip can effectively remove the lesion mucosa. Summary of the invention

[0004] The purpose of the present invention is to provide an endoscopic mucosal dissection auxiliary clamp to solve the problem that the prior art proposed in the above background technology cannot control the force during mucosal dissection, and it cannot automatically roll up and dissect the mucosa during the operation, the mucosal dissection effect is poor, and it cannot release and automatically roll up and dissect the mucosa around the lesion multiple times, which is not convenient for maximizing the display of the surgical field and affects the accuracy of lesion resection.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an auxiliary clip for endoscopic mucosal dissection, comprising an outer sheath tube, a dissection mechanism for automatically rolling up the mucosa is provided on one side of the outer sheath tube;

[0006] The stripping mechanism comprises a cutter head, a clamp arm assembly for clamping and locking the mucosa is arranged in the cutter head, a connecting rod is arranged on one side of the cutter head, the connecting rod is rotatably arranged in the mounting opening, the mounting opening is arranged on the release ring, a volute spring is arranged on the outer surface of the connecting rod, one end of the volute spring is connected to the mounting opening, the release ring is arranged in the outer sheath tube, and the release ring can be detachably connected to the outer sheath tube;

[0007] Wherein, a multi-stage operating mechanism for adjusting the clamping force and the rotational winding force of the clamp arm assembly is also arranged inside the outer sheath tube.

[0008] Preferably, the clamp arm assembly includes a first clamp and a second clamp, the first clamp and the second clamp are respectively arranged on a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are both rotatably arranged in an adjustment slot, the adjustment slot is arranged on one side of the cutter head, and an adjustment assembly for clamping control of the first clamp and the second clamp is also arranged in the cutter head.

[0009] By adjusting the setting of the knot assembly, the first rotating shaft and the second rotating shaft are controlled to rotate in opposite directions, the angle between the first clamp and the second clamp is adjusted, and the clamping force of the mucosa is adjusted.

[0010] Preferably, the adjustment assembly includes a bidirectional rack, which is rotatably set at one end of a threaded rod, the threaded rod is set in a threaded sleeve, the threaded sleeve is set in a groove body, the groove body is set on one side surface of the connecting rod, and the bidirectional rack is meshed with a first gear and a second gear, the first gear is set on a first rotating shaft, and the second gear is set on a second rotating shaft.

[0011] Through the transmission of the bidirectional rack, the first gear and the second gear, the first clamp and the second clamp can be controlled to rotate in opposite directions at the same time. With the clamping action of the first clamp and the second clamp, the mucosa can be clamped. At the same time, through the movement of the threaded rod, the moving position of the bidirectional rack can be positioned, and the first clamp and the second clamp can be locked.

[0012] Preferably, the multi-stage operating mechanism includes an outer sleeve, which is arranged on one side surface of the adjusting sleeve, and the adjusting sleeve is movably arranged in the outer sheath tube. A driving pin is arranged on the inner wall of the outer sleeve, and the driving pin is cooperated and connected with an arc-shaped driving groove, and the arc-shaped driving groove is arranged on the outer surface of the connecting rod.

[0013] Through the setting of the arc-shaped driving groove, when the outer sleeve cooperates with the connecting rod, as the outer sleeve moves, the driving pin moves along the arc-shaped driving groove and drives the connecting rod to rotate automatically. Through the rotation of the connecting rod, the volute spring can be stretched to provide the connecting rod with a rotational force for automatic rotation.

[0014] Preferably, one side of the arc-shaped driving groove is connected to the introduction groove, and the introduction groove is arranged at the end of the connecting rod.

[0015] By setting the guide groove, when the outer sleeve and the connecting rod are assembled, the driving pin can be accurately moved into the arc-shaped driving groove through the guide groove, thereby ensuring the stability of the connecting rod when rotating.

[0016] Preferably, a guide groove is provided at the other end of the arc-shaped driving groove, the guide groove is provided on the outer surface of the connecting rod, and the guide groove is horizontally arranged on the outer surface of the connecting rod.

[0017] The provision of the guide groove facilitates the separation of the driving pin from the connecting rod, thereby enabling the connecting rod to automatically rotate and automatically reel and peel the mucosa.

[0018] Preferably, the multi-stage operating mechanism further comprises an inner core rod body, the inner core rod body is movably arranged in the adjusting sleeve, and one end of the inner core rod body extends into the outer sleeve, and a buckle portion is arranged at the end of the inner core rod body.

[0019] Preferably, one end of the buckle portion is snap-connected with the slot portion, the slot portion is arranged on the knob portion, and the knob portion is arranged at the other end of the threaded rod.

[0020] Through the clamping connection between the clamping block part and the clamping groove part and the rotation of the inner core rod body, the threaded rod can be driven to rotate in the threaded sleeve, and the rotation of the threaded rod can move with the bidirectional rack.

[0021] Preferably, positioning blocks are symmetrically arranged on the outer surface of the release ring, and the positioning blocks are clamped in positioning slots, and the positioning slots are arranged on both sides of the inner wall of the outer sheath tube.

[0022] By setting the positioning card block, the installation of the release ring and the outer sheath tube can be positioned, making the installation of the release ring convenient.

[0023] Preferably, an electromagnet is embedded on one side surface of the positioning slot, and the electromagnet is adsorbed and connected to the positioning block.

[0024] By setting the electromagnet, the positioning block can be fixed or loosened, so that the release ring can be separated from the outer sheath tube.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The present application can clamp and fix the mucosa around the lesion, and can also automatically roll up and peel the mucosa, with good mucosal peeling effect. At the same time, the peeling force can be controlled each time, and the peeling force is constant.

[0027] (2) The present application is capable of monomer release, and multiple peeling mechanisms can be delivered to the mucosa around the lesion. Through the release of multiple peeling mechanisms, the mucosa around the lesion can be completely peeled off, ensuring the maximization of the surgical field and improving the accuracy of lesion removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a half-section structural schematic diagram of the peeling mechanism in the present invention;

[0030] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0031] Figure 4 It is a schematic diagram of a half-section structure of the clamp arm assembly in the present invention;

[0032] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0033] Figure 6 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 7 It is a schematic diagram of the overall structure of the multi-stage operating mechanism in the present invention;

[0035] Figure 8 It is a schematic diagram of the main cross-sectional structure of the multi-stage operating mechanism of the present invention;

[0036] Fig. 9 It is a schematic diagram of the explosion structure of the outer sleeve and the connecting rod assembly in the present invention;

[0037] Fig.10 It is a schematic diagram of the structure of the first clamp and the second clamp in the clamping state of the present invention;

[0038] Fig.11 It is a schematic diagram of the structure of the peeling mechanism in the present invention when winding and peeling;

[0039] In the figure: 1. stripping mechanism; 2. outer sheath; 3. multi-stage operating mechanism; 31. adjusting sleeve; 32. inner core rod body; 33. outer sleeve; 34. driving pin; 35. buckle part; 36. guide groove; 37. guide groove; 38. arc driving groove; 39. clamping groove; 40. clamping block; 101. cutter head; 102. release ring; 103. positioning slot; 104. positioning block; 105. electromagnet; 106. connecting rod; 107. volute spring; 108. mounting port; 109. two-way rack; 110. threaded rod; 111. threaded sleeve; 112. slot body; 113. slot part; 114. knob part; 115. first clamp; 116. second clamp; 117. first rotating shaft; 118. first gear; 119. second gear; 120. second rotating shaft. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 5 as well as Fig. 9 , the present invention provides a technical solution: an auxiliary clamp for endoscopic mucosal dissection, comprising an outer sheath tube 2, a dissection mechanism 1 for automatically rolling up the mucosa is arranged on one side of the outer sheath tube 2;

[0042] The peeling mechanism 1 includes a blade head 101, a clamping arm assembly for clamping and locking the mucosa is arranged in the blade head 101, a connecting rod 106 is arranged on one side of the blade head 101, the connecting rod 106 is rotatably arranged in a mounting opening 108, the mounting opening 108 is arranged on a release ring 102, a volute spring 107 is arranged on the outer surface of the connecting rod 106, one end of the volute spring 107 is connected to the mounting opening 108, the release ring 102 is arranged in the outer sheath tube 2, and the release ring 102 can be detachably connected to the outer sheath tube 2;

[0043] See also Figure 2 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 as well as Fig.11A multi-stage operating mechanism 3 is also arranged in the outer sheath tube 2, and the multi-stage operating mechanism 3 includes an outer sleeve 33, and the outer sleeve 33 is arranged on one side surface of the adjusting sleeve 31, and the adjusting sleeve 31 is movably arranged in the outer sheath tube 2. A driving pin 34 is arranged on the inner wall of the outer sleeve 33. Specifically, the driving pin 34 is a cylindrical structure, which is convenient for the driving pin 34 to slide smoothly in the arc driving groove 38. The driving pin 34 is matched with the arc driving groove 38. The arc driving groove 38 is arranged on the outer surface of the connecting rod 106, and multiple groups of arc driving grooves are connected by guide grooves 36. When the outer sleeve 33 cooperates with the connecting rod 106, as the outer sleeve 33 moves, the driving pin 34 moves along the arc driving groove 38 and drives the connecting rod 106 to rotate automatically. Through the rotation of the connecting rod 106, the volute spring 107 can be stretched, providing the connecting rod 106 with a rotational force for automatic rotation.

[0044] When the outer sleeve 33 is sleeved on the connecting rod 106, the driving pin 34 moves into the arc driving groove 38. As the adjusting sleeve 31 moves, the outer sleeve 33 is driven to move. The outer sleeve 33 drives the driving pin 34 to move along the arc driving groove 38. When the driving pin 34 moves, the connecting rod 106 is driven to rotate in the installation opening 108. The rotation of the connecting rod 106 drives the volute spring 107 to stretch. The rotation of the connecting rod 106 drives the cutter head 101 to rotate. By continuously pushing and pulling the outer sleeve 33, the driving pin 34 is moved into the next arc driving groove 38 through the guide groove 36, and the connecting rod 106 is continuously rotated for multiple circles. The length of the separation is controlled by the number of rotations of the connecting rod 106, and the device is placed in the mucosal position around the lesion. The clamping arm assembly is controlled by the multi-level operating mechanism 3 to clamp and fix the mucosa, and then the adjusting sleeve 31 is reset and pulled. The adjusting sleeve 31 drives the outer sleeve 33 to move, and the outer sleeve 33 drives the driving pin 34 to move, and the driving pin 34 is separated from the connecting rod 106. The volute spring 107 drives the connecting rod 106 to reset and rotate, and the connecting rod 106 drives the clamping arm assembly to rotate through the blade head 101. Through the rotation of the clamping arm assembly, the mucosa is automatically rolled up and peeled off, and then the release ring 102 is peeled off from the outer sheath 2. Repeat the above operation, and transport the multiple sets of peeling mechanisms 1 to the mucosal position around the lesion through the outer sheath 2, and peel the mucosa through the multiple sets of peeling mechanisms 1, so as to completely expose the lesion, make the surgical field clear, and facilitate accurate and complete removal of the lesion.

[0045] Furthermore, one side of the arc-shaped driving groove 38 is connected to the introduction groove 37, and the introduction groove 37 is arranged at the end of the connecting rod 106. When the outer sleeve 33 is sleeved on the connecting rod 106, the driving pin 34 moves accurately into the arc-shaped driving groove 38 through the introduction groove 37, thereby ensuring the stability of the connecting rod 106 during rotation.

[0046] Furthermore, the guide groove 36 is provided on the outer surface of the connecting rod 106, and the guide groove 36 is arranged horizontally on the outer surface of the connecting rod 106. During the separation process of the outer sleeve 33 and the connecting rod 106, the driving pin 34 is moved out through the guide groove 36, which facilitates the separation of the driving pin 34 from the connecting rod 106, thereby enabling the connecting rod 106 to rotate automatically and automatically roll up and peel off the mucosa.

[0047] A clamping block 39 is provided on one side of the outer surface of the adjusting sleeve 31, and the clamping block 39 is provided in the clamping groove 40, and the clamping groove 40 is provided on one side of the inner wall of the outer sheath tube 2. When the adjusting sleeve 31 is assembled with the outer sheath tube 2, the clamping block 39 is clamped into the clamping groove 40, so that the adjusting sleeve 31 can be positioned and installed, and the alignment of the driving pin 34 and the arc-shaped driving groove 38 is facilitated.

[0048] As a specific embodiment of this application, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Fig.10 The clamp arm assembly includes a first clamp 115 and a second clamp 116, and the first clamp 115 and the second clamp 116 are respectively arranged on a first rotating shaft 117 and a second rotating shaft 120, and the first rotating shaft 117 and the second rotating shaft 120 are both rotatably arranged in an adjustment slot, and the adjustment slot is arranged on one side of the cutter head 101. The cutter head 101 is also provided with an adjustment component for clamping the first clamp 115 and the second clamp 116, controlling the first rotating shaft 117 and the second rotating shaft to rotate in opposite directions, adjusting the angle between the first clamp 115 and the second clamp 116, and adjusting the clamping force of the mucosa.

[0049] Specifically, the adjustment component includes a bidirectional rack 109, which is rotatably arranged at one end of a threaded rod 110. Specifically, a connecting shaft is arranged at one end of the bidirectional rack 109, and the connecting shaft is rotatably arranged in a mounting groove through a ball bearing. The mounting groove is arranged at one end of the threaded rod 110, which can ensure that the threaded rod 110 rotates and the bidirectional rack 109 performs translational motion. The threaded rod 110 is arranged in a threaded sleeve 111, and the threaded sleeve 111 is arranged in a groove body 112. The groove body 112 is arranged on one side surface of the connecting rod 106. The bidirectional rack 109 is arranged on one side surface of the connecting rod 106. 9 is meshed with the first gear 118 and the second gear 119. The first gear 118 is arranged on the first rotating shaft 117, and the second gear 119 is arranged on the second rotating shaft 120. The first clamp 115 and the second clamp 116 can be controlled to rotate in opposite directions at the same time. With the clamping action of the first clamp 115 and the second clamp 116, the mucosa can be clamped. At the same time, through the movement of the threaded rod 110, the moving position of the bidirectional rack 109 can be positioned, and the first clamp 115 and the second clamp 116 can be locked.

[0050] In the present application, the closed width of the first clip 115 and the second clip 116 is 2.5mm, and the length of the mucosa when it is closed and rolled up for one circle can be 2.5π. Therefore, the length of the mucosa rolled up for one circle by the first clip 115 and the second clip 116 is about 7.85mm. According to the current size of the lesion, the mucosa normally needs to be rolled up for a length of 2cm-5cmm, and the first clip 115 and the second clip 116 need to be rolled up for 2.6-6.4 circles. The scroll spring 107 selected in the present application can be designed according to the JB / T 7366-1994 standard for the machinery industry of the People's Republic of China based on the rolling length of 2cm-5cmm.

[0051] The multi-stage operating mechanism 3 also includes an inner core rod body 32, which is movably arranged in the adjusting sleeve 31, and one end of the inner core rod body 32 extends into the outer sleeve 33. A buckle portion 35 is arranged at the end of the inner core rod body 32, and one end of the buckle portion 35 is engaged with the slot portion 113. The slot portion 113 is arranged on the knob portion 114, and the knob portion 114 is arranged at the other end of the threaded rod 110.

[0052] When the stripping mechanism 1 is transported to the mucosal position, the inner core rod body 32 is pushed, and the inner core rod body 32 drives the buckle part 35 to move, and moves the buckle part 35 into the slot part 113, and rotates the inner core rod body 32. The inner core rod body 32 drives the knob part 114 to rotate through the buckle part 35, and the knob part 114 drives the threaded rod 110 to rotate and move in the threaded sleeve 111. The threaded rod 110 moves and drives the bidirectional rack 109 to move. The movement of the bidirectional rack 109 drives the first gear 118 and the second gear 119 to rotate. The rotation of the first gear 118 and the second gear 119 drives the first rotating shaft 117 and the second rotating shaft 120 to rotate. The first rotating shaft 117 drives the first clamp 115 to rotate, and the second rotating shaft 120 drives the second clamp 1 16 rotates, and the first clamp 115 and the second clamp 116 rotate in opposite directions. The first clamp 115 and the second clamp 116 clamp the mucosa, and then reset and pull the adjusting sleeve 31, the adjusting sleeve 31 drives the outer sleeve 33 to move, the outer sleeve 33 drives the driving pin 34 to move, and the driving pin 34 is separated from the connecting rod 106, the volute spring 107 drives the connecting rod 106 to reset and rotate, the connecting rod 106 drives the first clamp 115 and the second clamp 116 to rotate through the cutter head 101, and the mucosa is rolled up and peeled off, when the release ring 102 is peeled off, the inner core rod body 32 can be pushed, and the inner core rod body 32 drives the release ring 102 to move through the threaded rod 110 and the connecting rod 106, and the release ring 102 is separated from the outer sheath 2.

[0053] As a specific embodiment of this application, please refer to Figure 3 A positioning block 104 is symmetrically arranged on the outer surface of the release ring 102, and the positioning block 104 is clamped in the positioning slot 103. The positioning slot 103 is arranged on both sides of the inner wall of the outer sheath tube 2, so that the release ring 102 and the outer sheath tube 2 can be positioned for installation. An electromagnet 105 is inlaid on one side surface of the inner side of the positioning slot 103, and the electromagnet 105 is adsorbed and connected with the positioning block 104. Specifically, the electromagnet 105 is connected to an external control switch, and the magnetic on and off of the electromagnet 105 is controlled, so that the positioning block 104 can be fixed or loosened, so as to facilitate the separation of the release ring 102 from the outer sheath tube 2.

[0054] When the stripping mechanism 1 is installed, the positioning block 104 on the release ring 102 is inserted into the positioning slot 103. At this time, the electromagnet 105 is controlled to generate magnetism. The electromagnet 105 adsorbs and fixes the positioning block 104 and fixes the entire stripping mechanism 1. When the stripping mechanism 1 completes the automatic winding and stripping of the mucosa, the magnetism of the electromagnet 105 is cut off, and the release ring 102 can be pushed to move in the outer sheath tube 2 by pushing the inner core rod body 32. The movement of the release ring 102 drives the positioning block 104 to move in the positioning slot 103, and separates the positioning block 104 from the positioning slot 103, separates the release ring 102 from the outer sheath tube 2, and completes the separation of the stripping mechanism 1 from the outer sheath tube 2. Then, the multi-stage operating mechanism 3 is taken out from the outer sheath tube 2, and the cutter is inserted from the outer sheath tube 2 to remove the lesion with the cutter.

[0055] In the present application, after the operation is completed, the outer sheath 2 can be moved to the position of multiple stripping mechanisms 1 to separate the release ring 102 from the outer sheath 2, and then the driving pin 34 and the arc-shaped driving groove 38 are cooperated to drive the stripping mechanism 1 to rotate and unfold the mucosa. The mucosa is separated by the first clamp 115 and the second clamp 116, and the stripping mechanism 1 is taken out. The above operation is repeated to take out multiple stripping mechanisms 1, and then the mucosal area can be sutured to stop bleeding.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary clip for endoscopic mucosal dissection, comprising an outer sheath (2), characterized in that: A peeling mechanism (1) for automatically rolling up the mucosa is provided on one side of the outer sheath tube (2); The stripping mechanism (1) comprises a blade head (101), wherein a clamping arm assembly for clamping and locking the mucosa is arranged inside the blade head (101), a connecting rod (106) is arranged on one side of the blade head (101), the connecting rod (106) is rotatably arranged in a mounting opening (108), the mounting opening (108) is arranged on a release ring (102), a spiral spring (107) is arranged on the outer surface of the connecting rod (106), one end of the spiral spring (107) is connected to the mounting opening (108), the release ring (102) is arranged in the outer sheath tube (2), and the release ring (102) can be detachably connected to the outer sheath tube (2); Wherein, a multi-stage operating mechanism (3) for adjusting the clamping force and the rotational winding force of the clamping arm assembly is also provided in the outer sheath tube (2).

2. The endoscopic mucosal dissection auxiliary clip according to claim 1, characterized in that: The clamp arm assembly comprises a first clamp (115) and a second clamp (116); the first clamp (115) and the second clamp (116) are respectively arranged on a first rotating shaft (117) and a second rotating shaft (120); the first rotating shaft (117) and the second rotating shaft (120) are both rotatably arranged in an adjustment slot; the adjustment slot is arranged on one side of a cutter head (101); and an adjustment assembly for clamping and controlling the first clamp (115) and the second clamp (116) is also arranged in the cutter head (101).

3. The endoscopic mucosal dissection auxiliary clip according to claim 2, characterized in that: The adjustment component comprises a bidirectional rack (109), wherein the bidirectional rack (109) is rotatably arranged at one end of a threaded rod (110), wherein the threaded rod (110) is arranged in a threaded sleeve (111), wherein the threaded sleeve (111) is arranged in a groove body (112), wherein the groove body (112) is arranged on a side surface of a connecting rod (106), and wherein the bidirectional rack (109) is meshed with a first gear (118) and a second gear (119), wherein the first gear (118) is arranged on a first rotating shaft (117), and the second gear (119) is arranged on a second rotating shaft (120).

4. The endoscopic mucosal dissection auxiliary clip according to claim 1, characterized in that: The multi-stage operating mechanism (3) comprises an outer sleeve (33), the outer sleeve (33) is arranged on a side surface of the adjusting sleeve (31), the adjusting sleeve (31) is movably arranged in the outer sheath tube (2), a driving pin (34) is arranged on the inner wall of the outer sleeve (33), the driving pin (34) is connected with an arc-shaped driving groove (38), and the arc-shaped driving groove (38) is arranged on the outer surface of the connecting rod (106).

5. The endoscopic mucosal dissection auxiliary clip according to claim 4, characterized in that: One side of the arc-shaped driving groove (38) is connected to the introduction groove (37), and the introduction groove (37) is arranged at the end of the connecting rod (106).

6. The endoscopic mucosal dissection auxiliary clip according to claim 4 or 5, characterized in that: A guide groove (36) is provided at the other end of the arc-shaped driving groove (38), and the guide groove (36) is provided on the outer surface of the connecting rod (106), and the guide groove (36) is arranged horizontally on the outer surface of the connecting rod (106).

7. The endoscopic mucosal dissection auxiliary clip according to claim 4, characterized in that: The multi-stage operating mechanism (3) further comprises an inner core rod body (32), wherein the inner core rod body (32) is movably arranged in the adjusting sleeve (31), and one end of the inner core rod body (32) extends into the outer sleeve (33), and a buckle portion (35) is arranged at the end of the inner core rod body (32).

8. The endoscopic mucosal dissection auxiliary clip according to claim 7, characterized in that: One end of the buckle portion (35) is snap-connected with the slot portion (113); the slot portion (113) is arranged on the knob portion (114); and the knob portion (114) is arranged at the other end of the threaded rod (110).

9. The endoscopic mucosal dissection auxiliary clip according to claim 1, characterized in that: Positioning blocks (104) are symmetrically arranged on the outer surface of the release ring (102), and the positioning blocks (104) are engaged in positioning slots (103). The positioning slots (103) are arranged on both sides of the inner wall of the outer sheath tube (2).

10. The endoscopic mucosal dissection auxiliary clip according to claim 9, characterized in that: An electromagnet (105) is embedded on one side surface of the positioning slot (103), and the electromagnet (105) is adsorbed and connected to the positioning block (104).

Images