Gastrolith treatment integrated instrument

Abstract

The invention relates to the technical field of medical instruments, and discloses a gastrolith treatment integrated instrument. The instrument comprises a rod body, the end of the rod body is provided with a gastrolith positioning assembly and a gastrolith collecting assembly arranged on the outer side of the gastrolith positioning assembly in a sleeving mode, and a power assembly is installed at the other end of the rod body; the gastrolith positioning assembly comprises a grabbing rod penetrating through the rod body, the end of the grabbing rod is rotationally connected with at least five grabbing claws, and a first micro camera is installed in the center of the grabbing rod. The gastrolith collecting assembly comprises a capturing frame fixed to the end of the rod body, a capturing net driven by a capturing piece is arranged on the capturing frame, a second micro camera is installed in the capturing frame, and the power assembly is in transmission connection with the grabbing rod and the capturing piece and provides power for grabbing and folding and unfolding of the capturing net. Gastrolith is stably fixed through the puncture part of the grabbing claw and a double-clamping structure, and the full-surrounding type catching net and the grading folding design are matched, so that the falling of the gastrolith and fragments is avoided, and the risk of secondary injury is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an integrated device for treating gastric stones. Background Technology

[0002] Currently, the clinical treatment of gastric stones mainly involves endoscopic lithotripsy, drug dissolution, or surgical procedures.

[0003] Endoscopic lithotripsy often leaves behind fragments, requiring multiple procedures; drug-induced litholysis is slow to take effect and has limited effectiveness on hard gastric stones; and surgical procedures are highly invasive and have a long recovery period.

[0004] Existing endoscopic-assisted grasping instruments suffer from insufficient grasping stability, making gastric stones prone to dislodgement. Furthermore, the lack of a dedicated collection structure allows fragments to easily scatter into the gastric cavity, causing secondary damage. In addition, the lack of visualization precision during operation makes it difficult to monitor the grasping and collection status in real time, resulting in low surgical efficiency and high risks.

[0005] Therefore, there is an urgent need for an integrated gastric bezoar treatment device that combines positioning, grasping, and collection functions, and is precise and stable in operation, to address the shortcomings of existing technologies. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an integrated device for treating gastric stones.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: The integrated device for treating gastric stones includes a rod body, a gastric stone positioning component located at one end of the rod body, a gastric stone collection component located outside the gastric stone positioning component, and a power component installed at the other end of the rod body. The gastric stone positioning component includes a grasping rod installed inside the rod body, at least five grasping claws installed at the end of the grasping rod, the grasping claws being rotatably connected to the end of the grasping rod, and a miniature camera installed at the center of the end of the grasping rod. The gastric bezoar collection assembly includes a capture frame mounted on the end of a rod, a capture net fixedly mounted on the capture frame, the capture net being driven by a capture component, and a miniature camera 2 being installed inside the capture frame; The power component is connected to the gripping rod and the capturing component respectively, and is used to provide power for the gripping action of the gastric stone positioning component and the retraction and unfolding action of the gastric stone collecting component.

[0008] Preferably, the gripper includes an integrally formed side engaging portion and a piercing portion, the side engaging portion being located on the outer side wall of the gripper, and the piercing portion being located at the free end of the gripper. The side engaging portion has a first slot and a second slot distributed along the length of the gripper claw. A engaging block is rotatably connected in the first slot via a rotating shaft. The second slot is located at the root of the puncture portion, and a second engaging block is hinged in the second slot via a hinge shaft.

[0009] Preferably, the end of the puncture part has a tapered and sharp structure that is wider at the top and narrower at the bottom, with the tip pointing towards the grasping center; The number of the locking blocks is at least five, and they are only allowed to rotate in one direction towards the gripping center. The rotation angle range of the locking blocks is 0°-30°. The second card block has an arc-shaped structure that is wider in the middle and converges towards the center of the gripping. Its upper end is longer than its lower end, and in its natural state, it forms an angle of 15°-45° with the outer wall of the gripping claw.

[0010] Preferably, both the miniature camera one and the miniature camera two are wirelessly connected to an external display terminal, and the resolution is not less than 1080P.

[0011] Preferably, the capturing element includes a gathering ring coaxially fixed to the lower end of the capturing net, the gathering ring being made of medical-grade elastic stainless steel, and having an initial diameter consistent with the maximum diameter of the capturing net; A fixing ring is coaxially fixed on the gripping rod, and at least three gathering ropes are evenly distributed between the fixing ring and the gathering ring and are evenly distributed along the circumference. The two ends of the gathering ropes are welded and fixed to the fixing ring and the gathering ring respectively. Driven by the power component, the gathering rope can pull the gathering ring towards the center to retract, thereby retracting the capture net and ensuring balanced force during retraction.

[0012] Preferably, the capture net is woven from medical elastic metal wire, and its maximum unfolded diameter is greater than the maximum opening diameter of the grasping claw. It is fully enclosed on the outside of the gastric stone positioning component, and the coverage extends from the end of the grasping rod to the lower end of the capture frame.

[0013] Preferably, an annular extrusion frame is coaxially fixed inside the rod body, and a sliding through hole adapted to the gripping rod is opened at the center of the extrusion frame, so that the gripping rod can slide relative to the extrusion frame along the axial direction; The fixing ring is coaxially fixed to the middle of the gripping rod and located above the extrusion frame. The gathering rope passes through the corresponding through hole opened on the extrusion frame and slides with the inner wall of the through hole.

[0014] Preferably, the lower end face of the extrusion frame is provided with an annular groove, and at least three arc-shaped binding rings are hinged in the groove, with the free ends of the binding rings connected by elastic connectors; When the gathering ring moves upward to fit the lower end face of the compression frame, the binding ring closes towards the center under the drive of the power component, fitting and squeezing the gathering ring to make it shrink.

[0015] Preferably, the power assembly includes a power piston that slides along the axial direction of the rod. The upper end of the power piston is connected to the end of the gripping rod via a ball joint, which can drive the gripping rod to move axially and rotate circumferentially. The upper end of the power piston is coaxially fixed with a power rod, the upper end of the power rod extends through the rod body sealing end cap to the outside, and a medical sealing gasket is provided between the two. A distance monitoring sensor is installed on the outer side of the upper end of the rod, which can detect the extension and retraction length of the power rod in real time and transmit the signal to an external terminal; The power assembly also includes a miniature electric push rod that drives the binding ring to close. This miniature electric push rod is electrically connected to a distance monitoring sensor, and controls the opening and closing of the binding ring by the extension and retraction position signal of the power rod detected by the sensor.

[0016] The present invention has the following beneficial effects: 1. The integrated gastric stone treatment device proposed in this invention integrates positioning, grasping, and collection functions. Through the synergistic action of the puncture part of the grasping claw and the double-clamping structure, the gastric stone is stably fixed. Combined with the fully enclosed capture net and the graded collection design, the gastric stone and fragments are prevented from falling off or scattering, reducing the risk of secondary damage.

[0017] 2. The integrated gastric stone treatment instrument proposed in this invention uses dual miniature cameras to transmit high-definition images in real time. Combined with the linkage control of distance monitoring sensors and electric push rods, it realizes visualization and precision of the operation process, reduces the difficulty of operation, and improves surgical efficiency and safety.

[0018] 3. The integrated gastric stone treatment device proposed in this invention uses biocompatible materials such as medical-grade elastic stainless steel and elastic metal wire for its core components. Its structural design meets the operational needs of the human digestive tract, resulting in minimal trauma and rapid recovery. Compared with surgery, it has the advantage of being minimally invasive and is more efficient and thorough than simple lithotripsy or litholysis.

[0019] 4. The integrated gastric stone treatment device proposed in this invention features a design with evenly distributed circumference of the ropes and synchronous compression of the binding rings, ensuring balanced force when the capture net is closed and preventing device deformation. Combined with the rotation and sliding adaptation structure of each component, it improves the overall operational stability and service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a partial schematic diagram of the gastric bezoar positioning component proposed in this invention; Figure 3 In this invention Figure 2 Enlarged view of section A; Figure 4This is a partial schematic diagram of the gastric bezoar collection component proposed in this invention; Figure 5 This is a schematic diagram of the overall structure of the gripper proposed in this invention; Figure 6 This is a partial internal schematic diagram of the rod body proposed in this invention; Figure 7 This is a cross-sectional view of the extrusion frame proposed in this invention; Figure 8 In this invention Figure 7 Enlarged view of section B.

[0021] In the diagram: 1. Rod; 2. Gastric stone positioning component; 3. Gastric stone collection component; 4. Power component; 21. Grasping rod; 22. Grasping claw; 23. Miniature camera one; 31. Capture frame; 32. Capture net; 33. Capture component; 34. Miniature camera two; 211. First slot; 212. Second slot; 213. Locking block; 214. Second locking block; 331. Gathering ring; 332. Fixing ring; 333. Gathering rope; 334. Compression frame; 335. Groove; 336. Binding ring; 41. Power piston; 42. Power rod; 43. Distance monitoring sensor. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Reference Figures 1-8 An integrated gastric bezoar treatment device includes a rod 1, a gastric bezoar positioning component 2 located at one end of the rod 1, a gastric bezoar collection component 3 located outside the gastric bezoar positioning component 2, and a power component 4 installed at the other end of the rod 1. In this embodiment, the components are functionally linked through the internal transmission structure of the rod 1. The gastric bezoar positioning component 2 includes a grasping rod 21 installed inside the rod body 1. At least five grasping claws 22 are installed at the end of the grasping rod 21. The grasping claws 22 are rotatably connected to the end of the grasping rod 21. In this embodiment, the grasping claws 22 can rotate around the connection point to realize the opening and closing action. A miniature camera 23 is installed at the center position of the end of the grasping rod 21. In this embodiment, the camera is used to collect positioning images of the gastric bezoar and the grasping claws 22 in real time. The gastric bezoar collection assembly 3 includes a capture frame 31 installed at the end of the rod 1. A capture net 32 ​​is fixedly installed on the capture frame 31. In this embodiment, the capture net 32 ​​is used to hold gastric bezoars. The capture net 32 ​​is driven by a capture member 33. In this embodiment, the capture member 33 can be driven to open and close. A miniature camera 34 is installed inside the capture frame 31. In this embodiment, it is used to monitor the working status of the capture net 32 ​​and the gastric bezoar collection status. The power unit 4 is connected to the gripping rod 21 and the capturing component 33 respectively, and is used to provide power for the gripping action of the gastric stone positioning component 2 and the retraction and unfolding action of the gastric stone collecting component 3; When it is necessary to grasp a gastric stone, the power unit 4 drives the grasping rod 21 to rotate the grasping claw 22 to open and close the grasping action; when it is necessary to collect a gastric stone, the power unit 4 drives the capture component 33 to carry the capture net 32 ​​to complete the unfolding or retracting action, thereby providing stable power support for the positioning, grasping and collection actions.

[0025] Reference Figure 2 and Figure 3 The grasping claw 22 is an integrally molded structure. In this embodiment, it consists of a side engagement part on the outer wall and a puncture part at the free end. The two parts are clearly positioned and have distinct functions, working together to achieve stable grasping of the gastric stone. The side engagement part is located on the outer wall of the grasping claw 22, and the puncture part is located at the free end of the grasping claw 22. The side engaging portion has a first slot 211 and a second slot 212 distributed along the length of the grasping claw 22. The first slot 211 is rotatably connected to a locking block 213 via a rotating shaft. In this embodiment, the locking block 213 can rotate around the rotating shaft to improve the locking stability during grasping. The second slot 212 is located at the root of the puncture portion. In this embodiment, the puncture portion can accurately puncture the gastric stone during grasping to achieve initial fixation.

[0026] During the grasping process, the gastric stone can be initially fixed by contacting and puncturing it. The side locking part further locks the gastric stone from the outside with the help of the locking block 213 and the second locking block 214 that rotate or hinge in the slot. The rotating shaft and the hinge shaft provide rotational support for the locking block 213 and the second locking block 214 respectively, ensuring that the linkage of each component achieves a stable grasping function.

[0027] Reference Figure 5The end of the puncture part has a tapered and sharp structure that is wider at the top and narrower at the bottom, with the tip pointing towards the grasping center. In this embodiment, the second slot 212 can accurately puncture the gastric stone during grasping to achieve initial fixation. The number of locking blocks 213 is at least five, and they are only allowed to rotate in one direction towards the grasping center. The rotation angle range of the locking blocks 213 is 0°-30°. In this embodiment, when rotating, they can fit against the surface of the gastric stone to enhance the locking effect, and the rotating shaft provides rotational support for them. The second locking block 214 has an arc-shaped structure that is wider in the middle and converges towards the center of the gripping. Its upper end is longer than its lower end, and in its natural state, it forms an angle of 15°-45° with the outer wall of the gripping claw 22. In this embodiment, it can be adapted to the shape of the gastric stone to achieve side locking.

[0028] Reference Figure 2 and Figure 4 Miniature camera 23 and miniature camera 34 are both wirelessly connected to an external display terminal with a resolution of not less than 1080P. In this embodiment, miniature camera 23 at the center of the end of the grasping rod 21 in the gastric stone positioning component 2 and miniature camera 34 inside the capture frame 31 in the gastric stone collection component 3 are both wirelessly connected to an external display terminal, which can transmit real-time images of the grasping, positioning and collection process to the terminal, providing visual support for operation.

[0029] Reference Figure 6 and Figure 7 The capturing element 33 includes a gathering ring 331 coaxially fixed to the lower end of the capturing net 32. The gathering ring 331 is made of medical elastic stainless steel, and its initial diameter is consistent with the maximum diameter of the capturing net 32. In this embodiment, it not only ensures the structural compatibility with the capturing net 32, but also provides a basis for resetting after gathering due to the elasticity of the material. A fixing ring 332 is coaxially fixed on the gripping rod 21. In this embodiment, in order to achieve uniform force transmission, at least three gathering ropes 333 are connected between the fixing ring 332 and the gathering ring 331. These ropes are evenly distributed along the circumference and their ends are firmly connected to the fixing ring 332 and the gathering ring 331 by welding, respectively, to ensure the load-bearing strength and stress stability of the connection part. Driven by the power component 4, the retracting rope 333 can pull the retracting ring 331 to retract towards the center, thereby retracting the capture net 32 ​​and ensuring balanced force during retraction.

[0030] When the power unit 4 is activated, it drives the gripping rod 21 to cause axial displacement of the fixing ring 332. The fixing ring 332 applies tension to the gathering ring 331 simultaneously through the evenly distributed gathering ropes 333. Since the ropes are symmetrically distributed circumferentially and welded to ensure effective force transmission, the gathering ring 331 will smoothly contract towards the center under the tension, thereby driving the capture net 32 ​​fixed to it to retract synchronously. The entire process effectively avoids deformation of the capture net 32 ​​or dislodgement of the gastric stone due to the balanced force, ensuring stable and reliable retraction. Reference Figure 4 The capture net 32 ​​is woven from medical elastic metal wire. Its maximum unfolding diameter is greater than the maximum opening diameter of the grasping claw 22. It is fully enclosed and fitted on the outside of the gastric stone positioning component 2. In this embodiment, the coverage extends from the end of the grasping rod 21 to the lower end of the capture frame 31. Its maximum unfolding diameter is greater than the maximum opening diameter of the grasping claw 22, which can fully accommodate the gastric stone after the grasping action.

[0031] Reference Figure 6 and Figure 7 An annular extrusion frame 334 is coaxially fixed inside the rod body 1. The center of the extrusion frame 334 is provided with a sliding through hole that is adapted to the gripping rod 21. In this embodiment, the gripping rod 21 can slide relative to it along the axial direction. The gripping rod 21 can slide relative to the extrusion frame 334 along the axial direction. The retaining ring 332 is coaxially fixed to the middle of the gripping rod 21 and located above the extrusion frame 334. The coiling rope 333 passes through the corresponding through hole opened on the extrusion frame 334 and slides with the inner wall of the through hole.

[0032] Referring to 7, an annular groove 335 is provided on the lower end face of the extrusion frame 334, and at least three arc-shaped binding rings 336 are hinged in the groove 335. The free ends of the binding rings 336 are connected by elastic connectors. When the gathering ring 331 moves upward to fit the lower end face of the compression frame 334, the binding ring 336 closes towards the center under the drive of the power component 4, fitting and squeezing the gathering ring 331 to make it shrink.

[0033] Reference Figure 1 , Figure 2 The power assembly 4 includes a power piston 41 that slides along the axial direction of the rod 1. The upper end of the power piston 41 is connected to the end of the gripping rod 21 via a ball joint, which can drive the gripping rod 21 to move axially and rotate circumferentially. A power rod 42 is coaxially fixed to the upper end of the power piston 41. The upper end of the power rod 42 extends through the sealing end cap of the rod body 1 to the outside, and a medical sealing gasket is provided between the two. A distance monitoring sensor 43 is installed on the outer side of the upper end of the pole 1, which can detect the extension and retraction length of the power pole 42 in real time and transmit the signal to the external terminal; The power assembly 4 also includes a miniature electric push rod that drives the binding ring 336 to close. This miniature electric push rod is electrically connected to the distance monitoring sensor 43 and controls the opening and closing of the binding ring 336 by the extension and retraction position signal of the power rod 42 detected by the sensor.

[0034] When the power piston 41 drives the gripping rod 21 to move the fixing ring 332 upward, the coiling rope 333 pulls the coiling ring 331 to initially shrink the capture net 32. When the coiling ring 331 is in contact with the lower end face of the squeezing frame 334, the distance monitoring sensor 43 triggers the micro electric push rod to drive the binding ring 336 to close, further squeezing the coiling ring 331 to completely shrink the capture net 32. The components achieve a stable gastric stone collection function through structural adaptation and linkage.

[0035] Working principle: The power piston 41 in the power assembly 4 is connected to the end of the gripping rod 21 via a ball joint, driving the gripping rod 21 to move axially and rotate circumferentially along the rod body 1, causing the gripping claw 22 installed at the end of the gripping rod 21 to open. At the same time, the capture net 32 ​​in the gastric stone collection assembly 3 remains in the unfolded state. The miniature camera 23 installed at the center of the end of the gripping rod 21 and the miniature camera 34 installed inside the capture frame 31 are started synchronously to collect images of the gastric stone position, the status of the gripping claw 22 and the working status of the capture net 32 ​​in real time, and transmit them to an external display terminal via wireless communication to provide visual reference for the operator. Once the gastric bezoar is located, the power unit 4 drives the grasping rod 21 to close the grasping claw 22. The free end of the grasping claw 22 has a tapered, sharp structure that is wider at the top and narrower at the bottom, with the tip pointing towards the puncture point at the grasping center to puncture the gastric bezoar, achieving initial fixation. At the same time, the locking block 213 in the first locking groove 211 of the side locking part, which is rotatably connected by a rotating shaft and only allows unidirectional rotation towards the grasping center, fits against the surface of the gastric bezoar. The second locking block 214 in the second locking groove 212, which is hinged by a hinge shaft and has an arc-shaped structure that is wider in the middle and converges towards the grasping center at both ends, adapts to the shape of the gastric bezoar. The two work together from the outside to clamp the gastric bezoar, completing the stable positioning of the gastric bezoar. After positioning is completed, The power unit 4 continues to drive the grasping rod 21 to move upward axially. The fixed ring 332, which is fixed in the middle of the grasping rod 21 and located above the annular extrusion frame 334, moves upward synchronously. Through the gathering ropes 333, which are evenly distributed along the circumference and welded to the fixed ring 332 and the gathering ring 331 at both ends respectively, the medical elastic stainless steel gathering ring 331, which is coaxially fixed to the lower end of the capture net 32, is pulled to retract towards the center. This causes the capture net 32, which is fully enclosed and sleeved on the outside of the gastric stone positioning component 2, to initially retract and wrap around the captured gastric stone. Because the gathering ropes 333 are evenly distributed, the force on the capture net 32 ​​is balanced when it retracts. When the gathering ring 331 moves upward to fit the lower end face of the annular compression frame 334, the distance monitoring sensor 43 installed on the outer side of the upper end of the rod 1 detects the extension and retraction position signal of the power rod 42 and transmits the signal to the miniature electric push rod that is electrically connected to itself. The miniature electric push rod drives the arc-shaped binding ring 336, which is hinged in the annular groove 335 on the lower end face of the annular compression frame 334, to close towards the center, fitting and squeezing the gathering ring 331 to further contract it, thereby driving the capture net 32 ​​to tighten completely and firmly fix the gastric stone to prevent it from falling off. After the gastric stone is collected, the miniature electric push rod drives the binding ring 336 to reset, and the gathering ring 331 returns to its initial state with the help of the elasticity of the medical elastic stainless steel. The power component 4 drives the grasping rod 21 to move downward and drives the grasping claw 22 to open, releasing the gastric stone and completing the entire gastric stone treatment process.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stomach stone treatment integrated instrument, comprising a rod body (1), a stomach stone positioning assembly (2) located at the end of the rod body (1), a stomach stone collecting assembly (3) located outside the stomach stone positioning assembly (2), and a power assembly (4) installed at the other end of the rod body (1), characterized in that ; The gastric stone positioning assembly (2) comprises a grabbing rod (21) mounted inside the rod body (1), and at least five grabbing claws (22) are mounted at the end of the grabbing rod (21); the grabbing claws (22) are rotationally connected with the end of the grabbing rod (21), and a miniature camera I (23) is mounted at the center of the end of the grabbing rod (21); The gastric stone collecting assembly (3) comprises a capturing frame (31) mounted at the end of the rod body (1), and a capturing net (32) is fixedly mounted on the capturing frame (31); the capturing net (32) is driven by a capturing piece (33), and a miniature camera II (34) is mounted at the inner position of the capturing frame (31); The power assembly (4) is respectively in transmission connection with the grabbing rod (21) and the capturing piece (33), and is used for providing power for the grabbing action of the gastric stone positioning assembly (2) and the folding and unfolding action of the gastric stone collecting assembly (3).

2. The gastric bead treatment integrated instrument of claim 1, wherein: The grabbing claw (22) comprises an integral side clamping portion and a puncture portion; the side clamping portion is located at the outer side wall of the grabbing claw (22), and the puncture portion is located at the free end of the grabbing claw (22); The side clamping portion is provided with a first clamping groove (211) and a second clamping groove (212) distributed along the length direction of the grabbing claw (22); a clamping block (213) is rotationally connected in the first clamping groove (211) through a rotating shaft; the second clamping groove (212) is located at the root of the puncture portion, and a second clamping block (214) is hingedly connected in the second clamping groove (212) through a hinge shaft.

3. The gastrolith handling integrated instrument of claim 2, wherein: The end of the puncture portion is in a tapered sharp structure with the width of the upper part being larger than that of the lower part, and the sharp end faces the grabbing center; The number of the clamping blocks (213) is at least five, and the clamping blocks (213) are allowed to rotate in only one direction towards the grabbing center; the rotation angle range of the clamping blocks (213) is 0°-30°; The second clamping block (214) is in an arc structure with the middle part being wide and the two ends being gathered towards the grabbing center; the length of the upper end is greater than that of the lower end, and the second clamping block (214) forms an angle of 15°-45° with the outer side wall of the grabbing claw (22) in a natural state.

4. The gastrolithing integrated instrument according to claim 1, wherein: The miniature camera I (23) and the miniature camera II (34) are in wireless communication connection with an external display terminal, and the resolution is not less than 1080P.

5. The gastrolith treatment integrated instrument according to claim 1, characterized by: The capturing piece (33) comprises a folding ring (331) coaxially fixed at the lower end of the capturing net (32); the folding ring (331) is made of medical elastic stainless steel, and the initial diameter is consistent with the maximum diameter of the capturing net (32); A fixing ring (332) is coaxially fixed on the grabbing rod (21); at least three folding ropes (333) are uniformly distributed between the fixing ring (332) and the folding ring (331) along the circumference; and the two ends of the folding ropes (333) are respectively welded with the fixing ring (332) and the folding ring (331); Under the driving of the power assembly (4), the folding ring (331) can be pulled to shrink towards the center to realize the folding of the capturing net (32), and the stress balance during folding is ensured.

6. The gastrolith handling integrated instrument of claim 5, wherein: The capturing net (32) is knitted by medical elastic wire, has a maximum expansion diameter larger than that of the grabbing claw (22), and is fully surrounded and arranged outside the bezoar positioning assembly (2) to cover from the end of the grabbing rod (21) to the lower end of the capturing frame (31).

7. The gastrolith handling integrated instrument of claim 6, wherein: The rod body (1) is coaxially fixed with an annular extrusion frame (334), the center of the extrusion frame (334) is provided with a sliding through hole matched with the grabbing rod (21), and the grabbing rod (21) can slide along the axis relative to the extrusion frame (334); The fixing ring (332) is coaxially fixed at the middle part of the grabbing rod (21) and located above the extrusion frame (334), and the folding rope (333) penetrates through the corresponding through hole provided on the extrusion frame (334) and is in sliding fit with the inner wall of the through hole.

8. The gastrolith handling integrated instrument of claim 7, wherein: The lower end surface of the extrusion frame (334) is provided with an annular groove (335), and at least three arc-shaped binding rings (336) are hinged in the groove (335), and the free ends of the binding rings (336) are connected by elastic connecting pieces. When the folding ring (331) moves upward to the lower end surface of the extrusion frame (334), the binding rings (336) are folded to the center under the drive of the power assembly (4), and the folding ring (331) is sleeved and extruded to make it shrink.

9. The gastrolith handling integrated instrument of claim 8, wherein: The power assembly (4) includes a power piston (41) sliding along the axis of the rod body (1), the upper end of the power piston (41) is connected with the end of the grabbing rod (21) through a ball hinge, and the grabbing rod (21) can be driven to move axially and rotate circumferentially; The upper end of the power piston (41) is coaxially fixed with a power rod (42), the upper end of the power rod (42) penetrates through the sealing end cover of the rod body (1) and extends to the outside, and a medical sealing washer is arranged therebetween; A distance monitoring sensor (43) is mounted on the outer side of the upper end of the rod body (1), which can detect the extension length of the power rod (42) in real time and transmit signals to the external terminal; The power assembly (4) further includes a micro electric push rod for driving the binding ring (336) to fold, and the micro electric push rod is electrically connected with the distance monitoring sensor (43), and the extension position signal of the power rod (42) detected by the sensor is used to control the opening and closing of the binding ring (336).

Images