Calculus removing mesh basket device

Through the design of the handle, the suite parts, and the webbal of the rock picking net basket, the use of the wire trajectory moving the suite parts to solve the problem of inconvenience and efficiency of existing device operations, and achieve efficient stone take -up operations.

CN222398608UActive Publication Date: 2025-01-28USHARE MEDICAL INC +1
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Patent Information

Application Number
CN202322712087.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-10-10
Publication Date
2025-01-28
Estimated Expiration
2033-10-10

AI Technical Summary

Technical Problem

The existing stone net basket device is inconvenient to operate when entering the bile duct or pancreatic duct and is inefficient, especially when encountering special-shaped nipple, it is more difficult to insert and takes more time.

Method used

Design a rock net basket device including the handle, the sleeve parts and the network of the net. The pipe parts are equipped with a network basket channel and guidance hole. The guide wire can pass through these channels and holes. Move to the target area, insert it into the webbal header and perform stone retrieval operations.

Benefits of technology

The convenient insertion and efficient operation of the stone network basket installation have been achieved, the operation methods are simplified, and the efficiency is improved, especially when it is handling special -shaped nipples.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a calculus removing mesh basket device which comprises a handle, a sleeve piece and a mesh basket head, one end of the sleeve piece is connected with the handle, a mesh basket channel is arranged in the sleeve piece, a guide hole communicated with the mesh basket channel is formed in the side wall of the sleeve piece, and a guide wire which is inserted into a bile duct or a pancreatic duct in advance penetrates through the mesh basket channel and the guide hole; and the mesh basket head is arranged at the other end of the sleeve piece and is used for taking stones. The end, exposed out of the human body, of the guide wire is inserted into the cannula piece from the opening, away from the handle, of the mesh basket channel, then the end, exposed out of the human body, of the guide wire extends out of the cannula piece from the guide hole, so that the cannula piece can move to the area, with calculus and other foreign matter, in the pancreatic biliary tract of the human body along the track of the guide wire, and the calculus removing mesh basket device is inserted into the correct area; the mesh basket head is inserted into a correct area along with the sleeve piece, the mesh basket head can conduct calculus removing work, the operation method is simple, operation is convenient, and efficiency is high.
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Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a stone-taking net basket device. Background Art

[0002] Bile duct stones blocking the bile duct can induce complications such as acute cholangitis and liver damage, with symptoms such as chills, fever, and even shock in severe cases. Long-term stone stimulation may increase the risk of bile duct cancer. Bile duct stones are a major disease that endangers human health.

[0003] ERCP (endoscopic retrograde cholangiopancreatography) stone removal has the advantages of few contraindications, less trauma, quick recovery, and fewer complications, and it performs well in the treatment of bile duct stones. ERCP stone removal surgery often uses stone removal baskets when dealing with stones with a diameter of more than 5 mm. At present, some baskets need to be lifted with duodenoscope lifting forceps to adjust the position of the basket so that the basket can smoothly enter the bile duct or pancreatic duct. The operation is inconvenient and inefficient, especially when encountering special-shaped papillae. It is even more inconvenient to insert the basket and it takes more time. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a stone removal net basket device, which is easy to operate and enter the stone area, so as to facilitate stone removal.

[0005] According to an embodiment of the utility model, a stone removal basket device includes a handle, a sleeve and a basket head, one end of the sleeve is connected to the handle, a basket channel is provided in the sleeve, a guide hole connected to the basket channel is provided on the side wall of the sleeve, the basket channel and the guide hole are used for passing a guide wire pre-inserted into the bile duct or pancreatic duct; the basket head is provided at the other end of the sleeve, and the basket head is used for removing stones.

[0006] The invention has at least the following beneficial effects: the end of the guide wire exposed to the human body is inserted into the sleeve member from the opening of the basket channel away from the handle, and the end of the guide wire exposed to the human body is then extended out of the sleeve member from the guide hole, so that the sleeve member can move along the trajectory of the guide wire to the area with stones and other foreign matter in the pancreatic and biliary tract of the human body, so that the stone removal basket device can be inserted into the correct area, and the basket head can perform the stone removal work as the sleeve member is inserted into the correct area. The operation method is simple, easy to operate and efficient.

[0007] According to some embodiments of the utility model, a pushing assembly and a rotating assembly are provided on the handle, the basket head includes a basket structure and a basket core wire, the basket core wire is passed through the basket channel, one end of the basket core wire extends to the outside of an opening of the basket channel and is connected to the rotating assembly, the other end of the basket core wire is connected to the basket structure, the basket structure is outside the other end of the sleeve member, the pushing assembly is used to push the sleeve member to move to drive the basket structure to open and close, and the rotating assembly is used to drive the basket structure to rotate.

[0008] According to some embodiments of the utility model, the handle is tubular, the handle is provided with a center hole, the side wall of the handle is provided with a limiting hole connected to the center hole, the length direction of the limiting hole is the same as the axial direction of the center hole, the pushing assembly includes a connected sliding member and a hand pushing block, the sliding member is passed through the center hole, one end of the hand pushing block is passed through the limiting hole and connected to the sliding member, and the other end of the hand pushing block extends outside the handle.

[0009] According to some embodiments of the present invention, one end of the central hole close to the sleeve member is a guide portion, and the guide portion cooperates with the sliding member to limit the sliding direction of the sliding member.

[0010] According to some embodiments of the utility model, the sliding member is provided with an avoidance hole connected to the basket channel, the rotating assembly is rotatably provided at an end of the handle away from the basket head, and one end of the basket core wire passes through the basket channel and the avoidance hole in sequence and then is connected to the rotating assembly.

[0011] According to some embodiments of the present invention, the handle further includes a finger rest portion provided on the handle.

[0012] According to some embodiments of the utility model, a fixing sleeve is connected to one end of the sleeve member, the sleeve member is connected to the pushing assembly through the fixing sleeve, and the fixing sleeve is sleeved on one end of the handle.

[0013] According to some embodiments of the utility model, the fixing sleeve is provided with a liquid injection port connected to the basket channel.

[0014] According to some embodiments of the utility model, an outer tube is sleeved on one end of the sleeve member, and the sleeve member and the outer tube are both connected to the fixing sleeve.

[0015] According to some embodiments of the present invention, the basket structure includes a plurality of mesh wires, and the plurality of mesh wires are formed into a mesh shape.

[0016] According to some embodiments of the present invention, an inner wall of the guide hole at one end close to the sleeve member forms an angle A with the axial direction of the basket channel, and the angle A is an acute angle.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a structural schematic diagram of a stone-taking net basket device according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0021] Figure 3 This is a schematic cross-sectional view of a stone-taking basket device according to an embodiment of the utility model;

[0022] Figure 4 for Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0023] Figure 5 This is a schematic cross-sectional view of a casing member in a stone-taking basket device according to an embodiment of the utility model;

[0024] Figure Number:

[0025] Handle 100; guide portion 110; center hole 120; limit hole 130; finger support portion 140;

[0026] Pushing assembly 200; sliding member 210; avoidance hole 211; hand push block 220;

[0027] Rotating assembly 300;

[0028] Sleeve member 400; basket channel 410; guide hole 420;

[0029] Basket head 500; basket structure 510; basket core wire 520;

[0030] Fixed sleeve 600; Liquid injection port 610;

[0031] Outer tube 700;

[0032] Guidewire 800. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figures 1 to 4 The utility model discloses a stone removal basket device, comprising a handle 100, a sleeve member 400 and a basket head 500. One end of the sleeve member 400 is connected to the handle 100. A basket channel 410 is provided in the sleeve member 400. A guide hole 420 connected to the basket channel 410 is provided on the side wall of the sleeve member 400. The basket channel 410 and the guide hole 420 are used for a guide wire 800 pre-inserted into the bile duct or pancreatic duct to pass through. The basket head 500 is provided at the other end of the sleeve member 400, and the basket head 500 is used for removing stones.

[0038] When removing foreign bodies such as stones, the guide wire 800 is first inserted into the area in the pancreatic and biliary tract of the human body where the foreign bodies such as stones are located. Then, the end of the guide wire 800 exposed to the human body is inserted into the sleeve member 400 from the opening of the basket channel 410 away from the handle 100. The end of the guide wire 800 exposed to the human body then extends out of the sleeve member 400 from the guide hole 420, so that the sleeve member 400 can move along the trajectory of the guide wire 800 to the area in the pancreatic and biliary tract of the human body where the foreign bodies such as stones are located, thereby inserting the stone removal basket device into the correct area. As the sleeve member 400 is inserted into the correct area, the basket head 500 can perform the stone removal work. The operation method is simple, easy to operate and efficient.

[0039] In some embodiments, a push assembly 200 and a rotating assembly 300 are provided on the handle 100. The basket head 500 includes a basket structure 510 and a basket core wire 520. The basket core wire 520 is inserted into the basket channel 410. One end of the basket core wire 520 extends to an opening of the basket channel 410 and is connected to the rotating assembly 300. When the rotating assembly 300 is rotated on the handle 100, the rotating assembly 300 is used to drive the basket structure 510 to rotate.

[0040] The other end of the basket core wire 520 is connected to the basket structure 510, and the basket structure 510 is outside the other end of the sleeve member 400. The push assembly 200 is connected to one end of the sleeve member 400, and the handle 100 is connected to one end of the sleeve member 400 through the push assembly 200. The push assembly 200 is used to push the sleeve member 400 to move so as to drive the basket structure 510 to open and close.

[0041] It can be understood that one opening of the basket channel 410 is provided at one end of the sleeve member 400; the other opening of the basket channel 410 is provided at the other end of the sleeve member 400, the other opening of the basket channel 410 is the opening of the basket channel 410 away from the handle 100, and the guide hole 420 is provided on the side wall of the other end of the sleeve member 400, and the end of the guide wire 800 exposed to the human body is first inserted into the basket channel 410 from the other opening of the basket channel 410, and then extends out of the sleeve member 400 through the guide hole 420.

[0042] Since one end of the basket core wire 520 extends to an opening outside the basket channel 410 and is connected to the rotating assembly 300, when the push assembly 200 pushes the sleeve member 400 to move in the direction of the basket structure 510, the position of the basket structure 510 remains unchanged, and the sleeve member 400 will force the basket structure 510 to gradually shrink into the basket channel 410, thereby achieving the folding of the basket structure 510 and then trapping the stone. When the push assembly 200 pushes the sleeve member 400 to move away from the basket structure 510, the basket structure 510 will gradually withdraw from the basket channel 410, the basket structure 510 will be freed from the restraint of the sleeve member 400, and the basket structure 510 will be opened, so that the stone can enter the basket structure 510.

[0043] When the basket core wire 520 contacts with foreign matter such as stones, the foreign matter such as stones cannot enter the basket structure 510. Since the rotating assembly 300 can rotate on the handle 100, one end of the basket core wire 520 extends to an opening outside the basket channel 410 and is connected to the rotating assembly 300, when the rotating assembly 300 is rotated, the rotating assembly 300 will drive the basket core wire 520 to rotate, so as to prevent the basket core wire 520 from contacting with foreign matter such as stones, and then adjust the position of the basket core wire 520 so that foreign matter such as stones is contained in the basket structure 510.

[0044] When the basket structure 510 rotates, the stone outside the basket structure 510 can be tightly trapped inside the basket structure 510. After the basket structure 510 traps the stone, the basket structure 510 is driven to rotate by the rotating assembly 300, and the basket structure 510 can drive the stone to rotate, thereby achieving the function of rotating the stone.

[0045] It should be understood that the basket structure 510 is made of elastic material. In the natural state, the basket structure 510 is in an open state. When the basket structure 510 is retracted into the basket channel 410, the inner wall of the basket channel 410 acts on the basket structure 510, and the basket structure 510 is gathered together. When the basket structure 510 withdraws from the basket channel 410, the basket structure 510 will automatically return to the open state.

[0046] It is conceivable that the basket structure 510 is made of a memory alloy material and can be bent. The basket core wire 520 is made of a bendable material, and the basket core wire 520 is bendable, so that the basket core wire 520 can bend with the external environment and then inserted into the pancreatic and biliary tract of the human body. Further, the sleeve member 400 is also made of a bendable material and can be bent, so that the sleeve member 400 can bend with the external environment and then inserted into the pancreatic and biliary tract of the human body.

[0047] In some of the embodiments, the basket structure 510 includes a plurality of mesh wires, which are connected into a mesh structure, and the mesh structure can enclose or trap foreign objects such as stones.

[0048] In one embodiment, the middle parts of multiple mesh wires are connected together, and the two ends of each mesh wire are connected to the basket core wire 520 to form a net bag. There is a gap between two adjacent mesh wires. When the basket structure 510 is in an open state, the gap will reach its maximum, and the stone can enter the net bag through the gap. When the basket structure 510 is gradually closed, the gap will gradually shrink until the gap is smaller than the size of the stone, and the basket structure 510 will then tightly wrap or hold the stone.

[0049] In another embodiment, the middle parts of the plurality of mesh wires are crossed, and the two ends of each mesh wire are connected to the basket core wire 520 to form a net bag.

[0050] In this embodiment, the basket structure 510 includes two mesh wires, the middle parts of the two mesh wires are crossed or connected, and all ends of the two mesh wires are connected to the basket core wire 520.

[0051] It is understandable that when the sleeve 400 is pushed into the pancreatic and biliary tract of the human body, the guide wire 800 extending from the guide hole 420 outside the sleeve 400 can be fixed to an external device first, so that when the sleeve 400 is pushed into the pancreatic and biliary tract of the human body, the sleeve 400 can be prevented from driving the guide wire 800 deeper into the human body. By operating the push assembly 200 and the rotating assembly 300, the basket structure 510 is closed and covers foreign bodies such as stones, and finally the handle 100 is pulled to withdraw the sleeve 400, the basket head 500 and foreign bodies such as stones from the human body, and the removal of foreign bodies such as stones is completed.

[0052] When the guide wire 800 extends out of the sleeve member 400 from the guide hole 420, the guide wire 800 needs to bend at a certain angle to enter the guide hole 420 from the basket channel 410. When the guide wire 800 is bent, the guide wire 800 will abut against the inner wall of the guide hole 420 at one end close to the sleeve member 400, that is, the guide wire 800 will abut against the inner wall of the other opening of the guide hole 420 away from the basket channel 410.

[0053] See also Figure 2 and Figure 5 In some embodiments, the inner wall of the guide hole 420 near the end of the sleeve 400 forms an angle A with the axial direction of the basket channel 410, and the angle A is an acute angle, so that the bending angle of the guide wire 800 is small, and it is prevented that the sleeve 400 is not conducive to entering the pancreatic and biliary tract of the human body due to the excessive bending angle of the guide wire 800. The smaller the angle A, the more conducive it is for the sleeve 400 to enter the pancreatic and biliary tract of the human body along the trajectory of the guide wire 800.

[0054] Specifically, the angle A may be 5° to 45°, and the guide wire 800 does not need to be excessively bent when extending out of the sleeve member 400 .

[0055] See also Figure 3 and Figure 4 In some embodiments, the handle 100 is tubular and has a center hole 120 extending through both ends of the handle 100 . One end of the center hole 120 is disposed on an end surface of one end of the handle 100 , and the other end of the center hole 120 is disposed on an end surface of the other end of the handle 100 .

[0056] A limiting hole 130 communicating with the center hole 120 is formed on the side wall of the handle 100, and the length direction of the limiting hole 130 is the same as the axial direction of the center hole 120. The push assembly 200 includes a connected sliding member 210 and a hand-pushing block 220. The sliding member 210 is inserted through the center hole 120, one end of the hand-pushing block 220 is inserted through the limiting hole 130 and connected to the sliding member 210, and the other end of the hand-pushing block 220 extends outside the handle 100. Since the sliding member 210 is inserted through the center hole 120, the moving direction of the sliding member 210 is the same as the length direction of the limiting hole 130 and the axial direction of the center hole 120.

[0057] One end of the hand push block 220 is inserted into the limiting hole 130 and connected to the sliding member 210, and the other end of the hand push block 220 extends outside the handle 100, so that the sliding member 210 can be driven to move in the guide portion 110 by the other end of the hand push block 220. The limiting hole 130 defines the moving direction and stroke of the hand push block 220, so that the hand push block 220 can be operated manually and the movement of the hand push block 220 and the sliding member 210 can be prevented from exceeding the stroke.

[0058] It is conceivable that the diameter of one end of the center hole 120 is larger than the diameter of the other end of the center hole 120 , that is, the diameter of the guide portion 110 is larger than the diameter of other areas of the center hole 120 .

[0059] See also Figure 3 and Figure 4 In some embodiments, one end of the central hole 120 close to the sleeve member 400 is a guide portion 110, and the guide portion 110 cooperates with the sliding member 210 to limit the sliding direction of the sliding member 210. It can be understood that the diameter of the guide portion 110 is adapted to the diameter of the sliding member 210, so that the sliding member 210 abuts against the inner wall of the guide portion 110 and can slide in the guide portion 110 along the length direction of the guide portion 110.

[0060] In some embodiments, the guide portion 110 is a groove formed on the inner wall of the central hole 120, the length of the guide portion 110 is limited, and the two ends of the guide portion 110 in the length direction have side walls, and the sliding member 210 can only move between the two side walls in the length direction of the guide portion 110, thereby realizing the role of limiting the sliding member 210, that is, the guide portion 110 also plays a role in limiting the travel of the sliding member 210 and the sleeve member 400. The length of the guide portion 110 and the length of the sliding member 210 can be set according to the requirements of the travel of the sleeve member 400.

[0061] Of course, the guide portion 110 can also be a guide rail provided on the inner wall of the central hole 120, and the sliding member 210 cooperates with the guide rail. Furthermore, a T-slot is provided on the sliding member 210, and the cross section of the guide rail is T-shaped. The sliding member 210 is sleeved on the guide rail to prevent the sliding member 210 from directly detaching from the guide rail along the vertical direction of the guide rail. Furthermore, convex blocks are provided at both ends of the guide rail, and the sliding member 210 can be pressed against the convex blocks. The convex blocks can prevent the sliding member 210 from detaching from the guide rail from the end of the guide rail, and limit the sliding member 210 to move back and forth between the two convex blocks.

[0062] In some embodiments, one end of the sleeve member 400 is connected to the sliding member 210, and the sliding member 210 is provided with an avoidance hole 211 communicating with the basket channel 410. The rotating assembly 300 is rotatably provided on the end of the handle 100 away from the basket head 500, and one end of the basket core wire 520 passes through the basket channel 410 and the avoidance hole 211 in sequence and is connected to the rotating assembly 300. Due to the provision of the avoidance hole 211, when the rotating assembly 300 is rotated and the rotating assembly 300 drives the basket core wire 520 to rotate, excessive friction resistance between the basket core wire 520 and the sliding member 210 can be avoided, so that the rotation of the rotating assembly 300 and the movement of the sliding member 210 do not interfere with or affect each other.

[0063] One end of the sleeve member 400 can pass through a port of the central hole 120 and be connected to the sliding member 210, that is, the sleeve member 400 is disposed corresponding to one end of the handle 100, and the rotating assembly 300 is rotatably disposed on the other end of the handle 100. The rotating assembly 300 is an end cap structure, and the rotating assembly 300 is covered on the end of the handle 100 away from the basket head 500.

[0064] In some of the embodiments, the handle 100 further includes a finger rest portion 140 disposed on the handle 100 , and fingers can directly rest on the finger rest portion 140 so that the hand can maintain a relatively fixed position with the handle 100 , and force can be exerted with the help of the finger rest portion 140 .

[0065] Furthermore, the finger rest portion 140 and the limiting hole 130 are respectively arranged on both sides of the handle 100, that is, the finger rest portion 140 and the hand push block 220 are respectively arranged on both sides of the handle 100. When the handle 100 needs to be held, the index finger and / or the middle finger can rest on the finger rest portion 140, and the remaining non-thumb fingers can be wrapped around the handle 100 to hold the handle 100, and the thumb rests on the hand push block 220, and the hand push block 220 is driven to move back and forth by the thumb.

[0066] In some of the embodiments, one end of the sleeve member 400 is connected to a fixing sleeve 600, the sleeve member 400 is connected to the pushing assembly 200 through the fixing sleeve 600, and the fixing sleeve 600 is sleeved on one end of the handle 100, and the fixing sleeve 600 serves to initially determine the relative positions of the sleeve member 400 and the handle 100.

[0067] In some of the embodiments, the fixing sleeve 600 is provided with an injection port 610 connected to the basket channel 410 , and liquid such as physiological saline can be injected into the basket channel 410 through the injection port 610 to assist in flushing the basket channel 410 , the basket core wire 520 and the basket structure 510 .

[0068] In one embodiment, the fixed sleeve 600 is tubular, the basket channel 410, the tubular cavity of the fixed sleeve 600 and the avoidance hole 211 are connected in sequence, and the basket core wire 520 passes through the basket channel 410, the tubular cavity of the fixed sleeve 600, the avoidance hole 211 and the center hole 120 in sequence and is connected to the rotating assembly 300.

[0069] The fixing sleeve 600 is provided with a columnar portion, and the injection port 610 is provided on the columnar portion and communicated with the lumen of the fixing sleeve 600 . The columnar portion is connected to a pipeline for externally conveying liquids such as physiological saline.

[0070] In some of the embodiments, an outer tube 700 is sleeved on one end of the sleeve member 400, and both the sleeve member 400 and the outer tube 700 are connected to the fixed sleeve 600. The outer tube 700 serves to strengthen the structural strength of one end of the sleeve member 400, maintain the strength of one end of the sleeve member 400, and prevent one end of the sleeve member 400 from being too soft to facilitate the sleeve member 400 to be inserted into the pancreatic and biliary tract of the human body. The outer tube 700 can also protect the sleeve member 400 and allow the sleeve member 400 to undergo a large number of and repeated bends.

[0071] See also Figure 3 In another embodiment, the sleeve member 400 is a hose, one end of the hose is an inner tube portion, an opening of the basket channel 410 is provided in the inner tube portion, and the inner tube portion is connected to the pushing assembly 200; the other end of the hose is an outer tube portion, and another opening of the basket channel 410 is provided in the outer tube portion.

[0072] In some embodiments, the sliding member 210 , the push block 220 , and the fixing sleeve 600 may be manufactured in an integrally formed manner.

[0073] It is conceivable that the handle 100 can be composed of two symmetrical semi-structural parts, and a limiting hole 130, a guide portion 110 and a center hole 120 are formed between the two semi-structural parts. The diameter of the guide portion 110 is larger than the diameter of the center hole 120, and the diameter of the sliding member 210 matches the diameter of the guide portion 110 and is larger than the diameter of the center hole 120. The sliding member 210 is arranged in the guide portion 110 and can move in the guide portion 110 along the length direction of the guide portion 110, but the sliding member 210 cannot be inserted into the center hole 120.

[0074] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A stone-taking basket device, characterized in that: include: Handle(100); a sleeve member (400), one end of which is connected to the handle (100), a basket channel (410) is provided inside the sleeve member (400), a guide hole (420) communicating with the basket channel (410) is provided on a side wall of the sleeve member (400), and the basket channel (410) and the guide hole (420) are used for allowing a guide wire (800) pre-inserted into the bile duct or pancreatic duct to pass through; The basket head (500) is arranged at the other end of the sleeve member (400) and is used for removing stones.

2. A stone-removing basket device according to claim 1, characterized in that: The handle (100) is provided with a pushing assembly (200) and a rotating assembly (300); the basket head (500) comprises a basket structure (510) and a basket core wire (520); the basket core wire (520) is passed through the basket channel (410); one end of the basket core wire (520) extends to the outside of an opening of the basket channel (410) and is connected to the rotating assembly (300); the other end of the basket core wire (520) is connected to the basket structure (510); the basket structure (510) is located outside the other end of the sleeve member (400); the pushing assembly (200) is used to push the sleeve member (400) to move so as to drive the basket structure (510) to open and close; the rotating assembly (300) is used to drive the basket structure (510) to rotate.

3. A stone-removing basket device according to claim 2, characterized in that: The handle (100) is tubular, and is provided with a center hole (120). A limiting hole (130) connected to the center hole (120) is provided on a side wall of the handle (100), and the length direction of the limiting hole (130) is the same as the axial direction of the center hole (120). The push assembly (200) comprises a connected sliding member (210) and a hand push block (220), wherein the sliding member (210) is passed through the center hole (120), one end of the hand push block (220) is passed through the limiting hole (130) and is connected to the sliding member (210), and the other end of the hand push block (220) extends outside the handle (100).

4. A stone-removing basket device according to claim 3, characterized in that: One end of the central hole (120) close to the sleeve member (400) is a guide portion (110), and the guide portion (110) cooperates with the sliding member (210) to limit the sliding direction of the sliding member (210).

5. The stone-removing basket device according to claim 4, characterized in that: The sliding member (210) is provided with an avoidance hole (211) communicating with the basket passage (410); the rotating assembly (300) is rotatably arranged at an end of the handle (100) away from the basket head (500); and one end of the basket core wire (520) passes through the basket passage (410) and the avoidance hole (211) in sequence and is then connected to the rotating assembly (300).

6. A stone-removing basket device according to claim 4 or 5, characterized in that: The handle (100) further comprises a finger rest portion (140) arranged on the handle (100).

7. A stone-removing basket device according to claim 4 or 5, characterized in that: One end of the sleeve member (400) is connected to a fixing sleeve (600), the sleeve member (400) is connected to the pushing assembly (200) via the fixing sleeve (600), and the fixing sleeve (600) is sleeved on one end of the handle (100).

8. The stone-removing basket device according to claim 7, characterized in that: The fixing sleeve (600) is provided with a liquid injection port (610) which is in communication with the basket channel (410).

9. The stone-removing basket device according to claim 7, characterized in that: An outer tube (700) is sleeved on one end of the sleeve member (400), and both the sleeve member (400) and the outer tube (700) are connected to the fixing sleeve (600).

10. The stone-removing basket device according to claim 2, characterized in that: The basket structure (510) includes a plurality of mesh wires, and the plurality of mesh wires are connected into a mesh shape.

11. A stone-removing basket device according to claim 1, 2 or 10, characterized in that: An inner wall of one end of the guide hole (420) close to the sleeve member (400) forms an angle A with the axial direction of the basket channel (410), and the angle A is an acute angle.