Device for taking foreign matters under endoscope

Abstract

The invention belongs to the technical field of endoscopic surgical instruments, and provides a foreign matter taking device under an endoscope. The device comprises a shearing mechanism and a clamping mechanism, the shearing mechanism is parallel to the clamping mechanism, a pulling-out mechanism is arranged between the shearing mechanism and the clamping mechanism, the two ends of the pulling-out mechanism are connected with the shearing mechanism and the clamping mechanism respectively, the pulling-out mechanism comprises a first elastic body and a limiting column, and the limiting column is a column body with a protruding part on the side face; one end of the limiting column is fixed to the shearing mechanism, the other end of the limiting column makes contact with the limiting hole, the pulling-out mechanism further comprises a connecting column provided with threads, the connecting column is provided with a limiting block, and the clamping mechanism is provided with a first limiting hole matched with the section of the limiting column and a second limiting hole matched with the limiting block of the connecting column. Foreign matters penetrating the septum and the like can be pulled out perpendicular to the shearing plane, and secondary injury to a patient caused by force towards the mouth side is avoided; and the clamping part is subjected to special structural design, so that different types of foreign matters can be clamped.

Description

Technical Field

[0001] The invention relates to the technical field of endoscopic surgical instruments and provides an endoscopic foreign body removal device. Background Art

[0002] In clinical practice, gastroenterologists often encounter patients who have accidentally swallowed foreign objects, such as fish bones, and have become lodged in their esophagus. Fish bones and other foreign objects are sharp, and conventional forceps can potentially lacerate the esophageal mucosa during their removal. Furthermore, some fish bones, having penetrated the mediastinum or other thoracic cavities, pose a risk of puncturing large thoracic blood vessels. When conventional endoscopy is ineffective, surgical removal is necessary. Existing conventional forceps can only remove foreign objects from the patient's anus toward the oral side along the long axis of the esophagus under endoscopic guidance. For fish bones that have already penetrated the mediastinum, conventional endoscopy cannot apply a force perpendicular to the long axis of the esophagus to dislodge them. To remove fish bones under conventional endoscopy, forceps can only be used to grasp one end of the bone in the esophagus. Then, forcefully pull the bone from the anus toward the oral side of the esophagus to free it. However, this procedure carries significant risks for fish bones that have already penetrated the mediastinum. The force pulling the bone toward the oral side can cause the bone to penetrate blood vessels above and below the bone, leading to severe bleeding. Prior art CN222870611U discloses a novel foreign body forceps for digestive endoscopy, comprising a fixed barrel, an articulated rod assembly, a connecting rod assembly, a pull rod, crocodile tooth forceps, and a quick-change blade assembly. The articulated rod assembly is located at one end of the fixed barrel and hinged to the end of the fixed barrel, and the articulated rod assembly is connected to the connecting rod assembly. The connecting rod assembly is located on one side of the articulated rod assembly and disposed inside the fixed barrel, and the other end of the connecting rod assembly is hinged to the pull rod. The pull rod is located on one side of the connecting rod assembly and slidably disposed inside the fixed barrel. The crocodile tooth forceps are located on the other end of the articulated rod assembly and fixedly connected to the articulated rod assembly. The quick-change blade assembly is located on one side of the crocodile tooth forceps and fixedly connected to the crocodile tooth forceps. The inventor believes that there is room for improvement. Summary of the Invention

[0003] The purpose of the present invention is to design an endoscopic foreign body removal device that can cut off foreign bodies and pull out foreign bodies that have penetrated into tissues such as the mediastinum perpendicularly to the shearing plane, thereby avoiding the force of measuring toward the mouth causing secondary damage to the patient. Secondly, before cutting off the foreign body, the penetration end of the foreign body that has penetrated into the mediastinum is clamped first to avoid the movement of the foreign body during the shearing process causing secondary damage to the patient; when the foreign body is pulled out perpendicularly to the shearing plane, the contact area between the foreign body and tissues such as the mediastinum is small, thereby reducing the resistance caused by muscle tension when pulling out the foreign body; avoiding the force of measuring toward the mouth causing secondary damage to the patient during the extraction process is beneficial to the patient's postoperative recovery; the clamping part is specially designed with a special structure to adapt to clamping different types of foreign bodies.

[0004] An endoscopic foreign body removal device includes a shearing mechanism and a clamping mechanism, the shearing mechanism and the clamping mechanism being parallel, a pulling mechanism being provided between the shearing mechanism and the clamping mechanism, the two ends of the pulling mechanism being respectively connected to the shearing mechanism and the clamping mechanism, the pulling mechanism including a first elastic body and a limiting column, the limiting column being a column with a protrusion on the side; one end of the limiting column being fixed to the shearing mechanism, the other end of the limiting column being in contact with a limiting hole, the pulling mechanism also including a connecting column provided with a thread, the connecting column being provided with a limiting block, the clamping mechanism being provided with a first limiting hole that matches the cross section of the limiting column and a second limiting hole that matches the limiting block of the connecting column. The endoscopic foreign body removal device uses a shearing mechanism and a clamping mechanism arranged in parallel, so that the shearing mechanism and the clamping mechanism can simultaneously contact foreign bodies that have penetrated the mediastinum, etc., thereby reducing the number of operating steps, shortening the operation time, and at the same time reducing the risk of foreign body displacement caused by the need for step-by-step shearing and clamping operations. The extraction mechanism is provided with a limiting column. When the protrusion of the limiting column cooperates with the first limiting hole, the clamping mechanism and the shearing mechanism are linked together. When the first guide wire is used to rotate the connecting column, the shearing and clamping operations can be completed simultaneously. When the shearing and clamping operations are completed, the limiting block of the connecting column cooperates with the second limiting hole, the first elastic body contracts and pulls the clamping mechanism, the first limiting hole of the clamping mechanism disengages from the limiting column, the clamping mechanism and the shearing mechanism are released from linkage, the shearing mechanism opens, and the first elastic body further contracts and pulls the clamping mechanism to pull out foreign objects that have penetrated into tissues such as the mediastinum in a direction perpendicular to the clamping mechanism, thereby avoiding secondary damage to the patient caused by the force toward the mouth during the extraction process, which is beneficial to the patient's postoperative recovery.

[0005] Preferably, one end of the connecting post is connected to the shearing mechanism, and the other end of the connecting post is connected to the clamping mechanism. The endoscopic foreign body removal device also includes a first guidewire, which is wrapped around the connecting post. When the guidewire is pulled, the connecting post rotates, thereby driving the shearing mechanism and the clamping mechanism to rotate. For endoscopic surgical instruments, the connecting post can only be rotated by manipulating the first guidewire externally to achieve the shearing and clamping operations.

[0006] Preferably, the shearing mechanism includes a first shearing piece and a second shearing piece. The first shearing piece and the second shearing piece are provided with mutually matching grooves at one end near the limiting column. A second elastic body is provided in the groove. The second elastic body connects the first shearing piece and the second shearing piece. The first shearing piece and the second shearing piece are both provided with a limiting column on one side near the clamping mechanism. The first shearing piece and / or the second shearing piece are connected to the connecting column. The shearing mechanism uses the second elastic body to connect the first shearing piece and the second shearing piece. The second elastic body provides restoring force for the first shearing piece and the second shearing piece, so that when the clamping mechanism and the shearing mechanism are decoupled, the shearing mechanism automatically opens to avoid foreign objects that penetrate into tissues such as the mediastinum and are removed in a direction perpendicular to the clamping mechanism.

[0007] Preferably, the endoscopic foreign body removal device further comprises a second guide wire and a baffle mechanism, the baffle mechanism comprising a shearing end and a clamping end close to the shear mechanism, the baffle mechanism comprising a baffle body, the baffle body being a flexible member in a hemispherical shape in the expanded state, the edge of the baffle body being provided with a fixed end and a guide end, the second guide wire passing through the guide end, and the end of the second guide wire being connected to the fixed end. The baffle mechanism comprises an expandable hemispherical flexible baffle body, the edge of which is provided with a fixed end and a guide end, the expansion / contraction of the hemispherical flexible baffle body is controlled by the second guide wire, and the diameter matches the guide sleeve. A physical isolation is formed around the foreign body to prevent the sheared foreign body from falling into the deep esophagus or into the trachea; the hemispherical flexible baffle body of the baffle mechanism can be folded into a hook shape to bypass the foreign body through the gap between the foreign body and the esophagus, and redeployed in front of the foreign body to prevent the sheared foreign body from falling into the deep esophagus or into the trachea.

[0008] Preferably, a pressure sensor and a micro-camera are provided at the top of the baffle. The built-in pressure sensor and micro-camera at the top of the baffle provide real-time feedback on the operating force and field of view, facilitating the placement of the endoscopic foreign body removal device. The baffle needs to be retracted to bypass the foreign body and then unfolded in front to prepare to receive the sheared foreign body. The pressure sensor detects the pressure on the baffle to prevent the baffle from striking the foreign body and causing secondary injury to the patient, and confirms whether the baffle has successfully received the foreign body for subsequent operations.

[0009] Preferably, the endoscopic foreign body removal device further comprises a guide sleeve, which surrounds the shearing mechanism and the clamping mechanism, and the diameter of the blocking body matches the diameter of the guide sleeve.

[0010] Preferably, the clamping mechanism includes a first clamping plate and a second clamping plate, and the first clamping plate and the second clamping plate are provided with mutually matching limiting holes at one end close to the limiting column, and the first clamping plate and / or the second clamping plate are connected to the connecting column.

[0011] Preferably, the ends of the first and second clamping plates, distal from the limiting post, form a clamping portion, and the opposing surfaces of the clamping portions are curved surfaces, with the curved surfaces becoming closer as the clamping portions approach the front end. This gradually changing curved surface improves the gripping stability of irregular foreign objects, with the curved surfaces becoming closer as the clamping portions approach the front end. This increases the clamping force at the front end of the clamping portion, preventing the clamped foreign object from slipping and facilitating the insertion of flexible foreign objects, thereby satisfying the need for flexible foreign objects to be removed.

[0012] Preferably, the clamping portion is thicker than the first and second clamping plates, and the curved surface is provided with a flexible material. This thickened clamping portion enhances its structural strength, meeting the requirements for removing large foreign objects. Furthermore, the curved surface with a gradually varying radius of curvature forms a trough that can accommodate more flexible material and flexible foreign objects. The compression and deformation of the flexible material and flexible foreign objects within the trough further optimizes the clamping mechanism's grip on irregular and flexible foreign objects.

[0013] Preferably, the connecting post connects the first clamping piece and the second shearing piece, or the connecting post connects the first clamping piece and the second shearing piece, and the shearing mechanism and the clamping mechanism rotate in opposite directions. The counter-rotation enables coordinated shearing and clamping operations, so that a foreign body that has penetrated tissue such as the mediastinum is subjected to symmetrical forces on both sides, thereby preventing displacement of the foreign body due to the forces during the shearing and clamping processes.

[0014] The present invention solves the problem that conventional endoscopic work cannot apply a force perpendicular to the long axis of the esophagus to pull out fish bones, thereby avoiding the risk of the fish bone being dragged by the force toward the mouth and piercing the blood vessels above and below the fish bone, causing heavy bleeding, and has the following beneficial effects: foreign bodies that have penetrated the mediastinum, etc. are pulled out perpendicularly to the shear plane, thereby avoiding the force toward the mouth causing secondary damage to the patient; the penetration end of the foreign body that has penetrated into the mediastinum, etc. tissues is clamped before cutting off the foreign body, thereby avoiding the movement of the foreign body during the shearing process, thereby causing secondary damage to the patient; the foreign body is pulled out perpendicularly to the shear plane, so that the contact area between the foreign body and the mediastinum, etc. tissues is small, thereby reducing the resistance caused by muscle tension when pulling out the foreign body; the force toward the mouth during the extraction process is avoided causing secondary damage to the patient, thereby facilitating the patient's postoperative recovery; the clamping part is specially designed for structure and can adapt to clamping different types of foreign bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0016] Figure 1 This is a schematic diagram of the structure of an endoscopic foreign body removal device; Figure 2 This is a schematic diagram of an endoscopic foreign body removal device in an expanded state; Figure 3 This is a schematic diagram of an endoscopic foreign body removal device in removal status; Figure 4 for Figure 3 A partial enlarged diagram of the removal state diagram; Figure 5 This is a schematic diagram of the internal structure of an endoscopic foreign body removal device; Figure 6 for Figure 5 A partial enlarged diagram of the internal structure diagram; Figure 7 This is another schematic diagram of the internal structure of an endoscopic foreign body removal device; Figure 8 This is a bottom view of an endoscopic foreign body removal device; Figure 9 for Figure 8 A partial enlarged view of the bottom view; Figure 10 Schematic diagram of the structure of the blocking body mechanism of Example 1; Figure 11 This is a structural diagram of the blocking mechanism of Example 2.

[0017] Legend: 1 shearing mechanism; 11 first shearing piece; 12 second shearing piece; 2 clamping mechanism; 21 first clamping piece; 22 second clamping piece; 23 first limiting hole; 24 second limiting hole; 25 clamping portion; 25a curved surface; 25b flexible material; 3 removal mechanism; 31 limiting column; 32 connecting column; 33 limiting block; 4 blocking mechanism; 41 blocking body; 42 guide end; 43 fixed end; 5 guide sleeve; 6 first guide wire; 7 second guide wire. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example 1 Combine Figures 1 to 4 The shown device is an endoscopic foreign body removal device, including a shearing mechanism 1 and a clamping mechanism 2. The shearing mechanism 1 and the clamping mechanism 2 are parallel, and a pulling mechanism 3 is provided between the shearing mechanism 1 and the clamping mechanism 2. The two ends of the pulling mechanism 3 are respectively connected to the shearing mechanism 1 and the clamping mechanism 2. The pulling mechanism 3 includes a first elastic body and a limiting column 31. The limiting column 31 is a column with a protrusion on the side; one end of the limiting column 31 is fixed to the shearing mechanism 1, and the other end of the limiting column 31 contacts the limiting hole. The pulling mechanism 3 also includes a connecting column 32 with a thread, and the connecting column 32 is provided with a limiting block 33. The clamping mechanism 2 is provided with a first limiting hole 23 that matches the cross-section of the limiting column 31 and a second limiting hole 24 that matches the limiting block 33 of the connecting column 32.

[0020] Through the above arrangement, the endoscopic foreign body removal device utilizes a shearing mechanism 1 and a clamping mechanism 2 arranged in parallel, enabling the shearing mechanism 1 and the clamping mechanism 2 to simultaneously contact a foreign body that has penetrated the mediastinum, etc., thereby reducing the number of operating steps and shortening the surgical time. Furthermore, the risk of foreign body displacement caused by the need for separate shearing and clamping operations is reduced. The extraction mechanism 3 is provided with a limiting post 31. When the protrusion of the limiting post 31 engages with the first limiting hole 23, the clamping mechanism 2 and the shearing mechanism 1 are linked. When the first guide wire 6 is used to rotate the connecting post 32, the shearing and clamping operations can be completed simultaneously. When the shearing and clamping operations are completed, the limit block 33 of the connecting column 32 cooperates with the second limit hole 24, the first elastic body contracts and pulls the clamping mechanism 2, the first limit hole 23 of the clamping mechanism 2 disengages from the limit column 31, the clamping mechanism 2 and the shearing mechanism 1 are released from linkage, the shearing mechanism 1 opens, and the first elastic body further contracts and pulls the clamping mechanism 2 to pull out foreign objects that have penetrated into tissues such as the mediastinum in a direction perpendicular to the clamping mechanism 2, thereby avoiding secondary damage to the patient caused by the force toward the mouth during the removal process, which is beneficial to the patient's postoperative recovery.

[0021] like Figure 4 As shown, one end of the connecting post 32 is connected to the shearing mechanism 1, and the other end of the connecting post 32 is connected to the clamping mechanism 2. The endoscopic foreign body removal device also includes a first guidewire 6, which is wrapped around the connecting post 32. When the guidewire 6 is pulled, the connecting post 32 rotates, thereby driving the shearing mechanism 1 and the clamping mechanism 2 to rotate. For endoscopic surgical instruments, the connecting post 32 can only be rotated by manipulating the first guidewire 6 outside the body, thereby achieving the shearing and clamping operations.

[0022] like Figures 5 to 7 As shown, the shearing mechanism 1 includes a first shearing piece 11 and a second shearing piece 12. The first shearing piece 11 and the second shearing piece 12 are provided with mutually matching grooves on one end near the limiting column 31. A second elastic body is provided in the groove. The second elastic body connects the first shearing piece 11 and the second shearing piece 12. The first shearing piece 11 and the second shearing piece 12 are both provided with a limiting column 31 on one side near the clamping mechanism 2. The first shearing piece 11 and / or the second shearing piece 12 are connected to the connecting column 32. The shearing mechanism 1 uses a second elastic body to connect the first shearing piece 11 and the second shearing piece 12. The second elastic body provides a restoring force for the first shearing piece 11 and the second shearing piece 12. When the clamping mechanism 2 and the shearing mechanism 1 are decoupled, the shearing mechanism 1 automatically opens to avoid foreign objects that penetrate into tissues such as the mediastinum and are removed in a direction perpendicular to the clamping mechanism 2.

[0023] The endoscopic foreign body removal device further comprises a guide sleeve 5 , which surrounds the shearing mechanism 1 and the clamping mechanism 2 , and the diameter of the blocking body 41 matches the diameter of the guide sleeve 5 .

[0024] like Figure 8As shown, the clamping mechanism 2 includes a first clamping plate 21 and a second clamping plate 22. The first clamping plate 21 and the second clamping plate 22 are provided with mutually matching limiting holes at one end close to the limiting column 31, and the first clamping plate 21 and / or the second clamping plate 22 are connected to the connecting column 32.

[0025] The ends of the first and second clamping plates 21 and 22, distal from the limiting post 31, form a clamping portion 25. The opposing surfaces of the clamping portions 25 are curved surfaces 25a, with the curved surfaces 25a becoming closer as the clamping portions 25 approach the front end. The gradually varying radius of the curved surfaces 25a optimizes the gripping stability of irregular foreign objects. The closer the curved surfaces 25a are to the front end of the clamping portions 25, the greater the gripping force at the front end of the clamping portions 25, preventing the foreign object from slipping and facilitating the insertion of flexible foreign objects, thus meeting the need for retrieving flexible foreign objects.

[0026] Combine Figure 7 and Figure 9 As shown, the clamping portion 25 is thicker than the first clamping piece 21 and the second clamping piece 22. Flexible material 25b is provided on the curved surface 25a. This thickened clamping portion enhances the structural strength of the clamping portion 25, ensuring sufficient removal of large foreign objects. Furthermore, the gradually varying radius of the curved surface 25a forms a groove that can accommodate more flexible material 25b. The deformation of the flexible material 25b within the groove further enhances the gripping stability of the clamping mechanism 2 for irregular foreign objects.

[0027] like Figure 8 As shown, the connecting post 32 connects the first clamping piece 21 and the second shearing piece 12, or the connecting post 32 connects the first clamping piece 21 and the second shearing piece 12. The shearing mechanism 1 and the clamping mechanism rotate in opposite directions. The counter-rotation achieves the coordinated action of the shearing and clamping operations, and the foreign body that penetrates the tissue such as the mediastinum is symmetrically stressed on both sides, thereby preventing the foreign body from being displaced due to the stress during the shearing and clamping processes.

[0028] Combine Figure 1 、 Figure 2 and Figure 10As shown, the endoscopic foreign body removal device also includes a second guide wire 7 and a baffle 41 mechanism 4. The baffle 41 mechanism 4 includes a shearing end and a clamping end near the shearing mechanism 1. The baffle 41 mechanism 4 includes a baffle 41, which is a flexible member with a hemispherical shape in the expanded state. The edge of the baffle 41 is provided with a fixed end 43 and five guide ends 42. The second guide wire 7 passes through the guide end 42, and the end of the second guide wire 7 is connected to the fixed end 43. The baffle 41 mechanism 4 contains an expandable hemispherical flexible baffle 41, the edge of which is provided with a fixed end 43 and a guide end 42. The expansion / contraction of the hemispherical flexible baffle 41 is controlled by the second guide wire 7, and the diameter matches the guide sleeve 5. A physical barrier is formed around the foreign body to prevent the sheared foreign body from falling into the deep esophagus or the trachea. The hemispherical flexible baffle is made of transparent material.

[0029] The top of the barrier 41 has a transparent spherical shell, which houses a pressure sensor and a micro-camera. The spherical shell is made of transparent material. The built-in pressure sensor and micro-camera provide real-time feedback on operating force and field of view, facilitating the placement of the endoscopic foreign body removal device. During the placement of the device, the barrier 41 must be retracted to bypass the foreign object and then unfolded forward, ready to receive the sheared foreign object. The pressure sensor detects the pressure on the barrier 41, preventing it from striking the foreign object and causing secondary injury to the patient. It also confirms whether the barrier 41 has successfully received the foreign object, facilitating subsequent operations.

[0030] Example 2 Different from the first embodiment, Figure 11 As shown, in this embodiment, a spring is provided on the outside of the second guide wire 7 of the blocking body mechanism 4. When the endoscopic foreign body removal device is used, the blocking body can be first deployed by the elastic force of the spring, so that the endoscopic foreign body removal device enters the patient's esophagus in a closed state. The guide sleeve 5 and the blocking body 4 fully cover the shearing mechanism 1 and the endoscope mechanism 2, which can solve the problem of friction damage when the instrument enters and exits the endoscope channel. When the endoscopic foreign body removal device approaches the foreign body, the second guide wire 7 is pulled, the spring is compressed, and the blocking body 4 is retracted. The blocking body 4 is bypassed around the foreign body through the gap between the side of the foreign body and the esophagus by using the shape of the blocking body 4. Then, the second guide wire 7 is released, and the elastic force of the spring causes the blocking body 4 to redeploy in front of the foreign body, solving the problem that the second guide wire 7 may be compressed by the esophageal tissue of the patient's esophagus due to insufficient strength of the second guide wire 7, resulting in the blocking body 4 not being able to be fully deployed.

[0031] The present invention solves the problem that conventional endoscopy cannot apply a force perpendicular to the long axis of the esophagus to pull out fish bones, thereby avoiding the risk of the fish bone being dragged toward the mouth and piercing the blood vessels above and below the fish bone, causing heavy bleeding, and has the following beneficial effects: foreign bodies that have penetrated the mediastinum, etc. are pulled out perpendicularly to the shear plane, thereby avoiding the force toward the mouth causing secondary damage to the patient; the penetration end of the foreign body that has penetrated into the mediastinum, etc. tissues is clamped before cutting off the foreign body, thereby avoiding the movement of the foreign body during the shearing process, thereby causing secondary damage to the patient; the foreign body is pulled out perpendicularly to the shear plane, and the contact area between the foreign body and the mediastinum, etc. tissues is small, thereby reducing the resistance caused by muscle tension when pulling out the foreign body; the force toward the mouth during the extraction process is avoided causing secondary damage to the patient, thereby facilitating the patient's postoperative recovery; the clamping part 25 is specially designed for structure, which can adapt to clamping different types of foreign bodies.

[0032] The above embodiments are only used to illustrate the preferred embodiments for implementing the technology of the present invention, and are not intended to limit the embodiments of the technology of the present invention in any form. Any person skilled in the art may make slight changes to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

Claims

1. An endoscopic foreign body removal device, comprising a shearing mechanism (1) and a clamping mechanism (2), characterized in that: The shearing mechanism (1) and the clamping mechanism (2) are parallel, and a pulling mechanism (3) is provided between the shearing mechanism (1) and the clamping mechanism (2). The two ends of the pulling mechanism (3) are respectively connected to the shearing mechanism (1) and the clamping mechanism (2). The pulling mechanism (3) comprises a first elastic body and a limiting column (31). The limiting column (31) is a column with a protruding portion on the side. One end of the limiting column (31) is fixed to the shearing mechanism (1), and the other end of the limiting column (31) contacts the limiting hole. The pulling mechanism (3) also comprises a connecting column (32) provided with a thread. The connecting column (32) is provided with a limiting block (33). The clamping mechanism (2) is provided with a first limiting hole (23) matched with the cross section of the limiting column (31) and a second limiting hole (24) matched with the limiting block (33) of the connecting column (32).

2. The endoscopic foreign body removal device according to claim 1, characterized in that: One end of the connecting column (32) is connected to the shearing mechanism (1), and the other end of the connecting column (32) is connected to the clamping mechanism (2). The endoscopic foreign body removal device also includes a first guide wire (6), which surrounds the connecting column (32). When the guide wire is pulled, the connecting column (32) rotates to drive the shearing mechanism (1) and the clamping mechanism (2) to rotate.

3. The endoscopic foreign body removal device according to claim 2, characterized in that: The shearing mechanism (1) comprises a first shearing sheet (11) and a second shearing sheet (12), wherein the first shearing sheet (11) and the second shearing sheet (12) are provided with mutually matching grooves at one end close to the limiting column (31), a second elastic body is provided in the groove, and the second elastic body connects the first shearing sheet (11) and the second shearing sheet (12), and the first shearing sheet (11) and / or the second shearing sheet (12) are provided with the limiting column (31) at one side close to the clamping mechanism (2), and the first shearing sheet (11) and / or the second shearing sheet (12) are connected to the connecting column (32).

4. The endoscopic foreign body removal device according to claim 2, characterized in that: The endoscopic foreign body removal device also includes a second guide wire (7) and a blocking body mechanism (4), wherein the blocking body mechanism (4) includes a shearing end and a clamping end close to the shearing mechanism (1), and the blocking body mechanism (4) includes a blocking body (41), wherein the blocking body (41) is a flexible member having a hemispherical shape in an unfolded state, and the edge of the blocking body (41) is provided with a fixed end (43) and a guide end (42), wherein the second guide wire (7) passes through the guide end (42), and the end of the second guide wire (7) is connected to the fixed end (43).

5. The endoscopic foreign body removal device according to claim 4, characterized in that: A pressure sensor and a micro camera are provided on the top of the baffle (41).

6. The endoscopic foreign body removal device according to claim 4, characterized in that: The endoscopic foreign body removal device further comprises a guide sleeve (5), the guide sleeve (5) surrounding the shearing mechanism (1) and the clamping mechanism (2), and the diameter of the blocking body (41) matches the diameter of the guide sleeve (5).

7. The endoscopic foreign body removal device according to claim 2, characterized in that: The clamping mechanism (2) comprises a first clamping sheet (21) and a second clamping sheet (22), wherein the first clamping sheet (21) and the second clamping sheet (22) are provided with mutually matching limiting holes at one end close to the limiting column (31), and the first clamping sheet (21) and / or the second clamping sheet (22) are connected to the connecting column (32).

8. The endoscopic foreign body removal device according to claim 7, characterized in that: One end of the first clamping piece (21) and the second clamping piece (22) away from the limiting column (31) is a clamping portion (25), and the opposite surface of the clamping portion (25) is a curved surface (25a). The closer the clamping portion (25) is to the front end, the closer the curved surface (25a) is to the front end.

9. The endoscopic foreign body removal device according to claim 8, characterized in that: The thickness of the clamping portion (25) is greater than that of the first clamping sheet (21) and the second clamping sheet (22), and a flexible material (25b) is provided on the surface of the curved surface (25a).

10. The endoscopic foreign body removal device according to claim 7, characterized in that: The connecting column (32) connects the first clamping sheet (21) and the second shearing sheet (12), or the connecting column (32) connects the first clamping sheet (21) and the second shearing sheet (12), and the shearing mechanism (1) and the clamping mechanism (2) rotate in opposite directions.

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