Mesh basket structure allowing guide wire to pass through
By designing a wire-guided mesh basket structure, using the wire to guide the mesh basket into the bile duct, and enhancing the connection of the mesh basket through the limit ball and reinforcement filler, the problem of difficulty in entering the bile duct and welding joint breakage of the stone net basket is solved. Improved the success rate of the stone extraction process.
Patent Information
- Application Number
- CN202421394333.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-02-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During retrograde cholangiopancreatography, it is difficult to enter the bile duct smoothly with stone removal net baskets, and there are few solder joints of the net basket wires, which are prone to breaking, resulting in failure during stone removal.
A wire-guided mesh basket structure is designed, including a guide wire-guided handle, a basket outer sheath tube, a blue core wire and a mobile sheath tube, and a basket body. The guide wire penetrates the guide tube, and the guide tube is guided by the guide wire, and the mesh basket body can enter the bile duct smoothly. The end of the mesh basket wire is firmly connected by a limit ball and reinforcement filler, increasing the connection area and avoiding breakage.
Through the guide wire, the mesh basket body can enter the bile duct smoothly, reducing the difficulty of insertion. The design of the limit ball and reinforcement filler increases the firm connection between the ends of the mesh basket wire, avoids the problem of welding joints, and improves the success rate of the stone extraction process.
Smart Images
Figure CN222467036U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a mesh basket structure capable of passing a guide wire. Background Art
[0002] Ercp surgery, also known as retrograde cholangiopancreatography, is a surgery for the treatment of common bile duct stones. Retrograde cholangiopancreatography belongs to the fourth level surgery. The stone removal process is to first insert a puncture cutter with a thin guide wire into the bile duct, and introduce the endoscope into the common bile duct until the stone is located. After the endoscope sees the stone, the puncture cutter and the guide wire are withdrawn, and then the stone removal basket is inserted into the bile duct to remove the stone. The stone removal basket is a medical device used to grasp, manipulate and remove stones and other foreign bodies under endoscopy;
[0003] There are many unpredictable factors in retrograde pancreaticocholangiopancreatography. When large stones, tumor compression, and postoperative changes in the common bile duct occur, the difficulty of stone removal is increased, which is not conducive to the insertion of the stone removal basket into the bile duct. When the stone removal basket is used to remove stones, the weld between the pulling wire and the basket wire breaks; when the stone removal basket is in use, there is a problem that the hanging basket cannot enter the bile duct smoothly, the basket wire has few firm welds, and the weld between the pulling wire and the basket wire is prone to breakage. For this reason, the present application proposes a basket structure that can pass through a guide wire. Utility Model Content
[0004] The utility model aims to provide a mesh basket structure through which a guide wire can pass, so as to solve the problems in the above-mentioned background technology that the hanging basket cannot smoothly enter the bile duct and the mesh basket wire has few firm welding points.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mesh basket structure that can pass a guide wire, comprising a handle and a mesh basket outer sheath tube used for guide wire guidance, a mesh blue core wire and a movable sheath tube, and a mesh basket body, the mesh blue core wire penetrates into the interior of the mesh basket outer sheath tube, the movable sheath tube is connected to the mesh blue core wire and the mesh basket body, a guide tube is provided at the end of the mesh basket outer sheath tube, a guide hole is provided on the outer surface of the guide tube, the movable sheath tube passes through the guide tube, one end of the movable sheath tube is inserted into the interior of the mesh basket outer sheath tube, a connecting column is provided at the other end of the movable sheath tube, a connecting head is provided at the end of the connecting column, the mesh basket body comprises a mesh basket head and a mesh basket wire, the two ends of the mesh basket wire are respectively connected to the connecting head and the mesh basket head, a limiting ball connected to the end of the mesh basket wire is provided on the side of the connecting head, and a reinforcing filler is provided on the outer surface of the connecting head.
[0006] Preferably, the guide wire is gap-matched with the guide hole, and the guide tube is slidably connected to the guide wire.
[0007] Preferably, the guide tube is a hollow round tube structure that is wide in the middle and narrow at both ends.
[0008] Preferably, the centers of the movable sheath, the guide tube, the connecting column and the connector are on the same axis, and opposite sides of the connecting column are respectively provided with a groove and a through hole, and the groove and the through hole are connected.
[0009] Preferably, the end of the basket wire is clearance-matched with the through hole, and the limiting ball is clearance-matched with the groove.
[0010] Preferably, a conical filling groove is provided on the outer surface of the connector, the filling groove is wider at one end of the notch located on the outer surface of the connector, and is narrower at one end of the filling groove located inside the connector, and the filling groove is connected to the through hole.
[0011] Preferably, the end of the basket wire passes through the center of the limiting ball, and the basket wire is connected to the limiting ball and the reinforcing filler.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] In the utility model, the stone retrieval hanging basket is designed with a guide wire, the guide wire passes through the guide tube, the guide tube is guided by the guide wire, the basket body can smoothly enter the bile duct, the end of the basket wire is firmly secured by the limiting ball and the reinforcing filler, the area of the firmly connected end of the basket wire is increased, and the breakage of the basket wire is avoided during the stone retrieval process. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 For the utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;
[0016] Figure 3 It is a three-dimensional structural schematic diagram of the guide tube of the utility model;
[0017] Figure 4 For the utility model Figure 1 The enlarged structural diagram of the middle B part;
[0018] Figure 5 It is a schematic cross-sectional structure diagram of the connector of the utility model;
[0019] In the figure: 1. handle; 2. basket outer sheath; 3. basket core wire; 4. movable sheath; 5. basket body; 6. guide wire; 7. guide tube; 8. connecting column; 9. connecting head; 51. basket head; 52. basket wire; 71. guide hole; 91. limiting ball; 92. reinforcing filler. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Example
[0022] See also Figures 1 to 5 The utility model provides a technical solution: a basket structure that can pass a guide wire, comprising a handle 1 and a basket outer sheath tube 2, a net blue core wire 3 and a movable sheath tube 4, and a basket body 5, which are used for guiding by a guide wire 6. When the stone-taking hanging basket is used, one end of the basket outer sheath tube 2 and the basket body 5 are inserted into the bile duct, the handle 1 is operated, the basket body 5 extends out and catches the gravel, and one end of the basket outer sheath tube 2 and the basket body 5 are taken out. The method of using the stone-taking hanging basket is conventional technical means. The present application will not be described in detail; the net blue core wire 3 penetrates into the interior of the net basket outer sheath tube 2, the movable sheath tube 4 is connected with the net blue core wire 3 and the net basket body 5, the end of the net basket outer sheath tube 2 is provided with a guide tube 7, and the outer surface of the guide tube 7 is provided with a guide hole 71. When taking stones, the guide wire 6 passes through the guide tube 7, one end of the guide wire 6 is retained in the bile duct, and then one end of the stone taking hanging basket is inserted into the bile duct, and the end of the net basket outer sheath tube 2 and the guide tube 7 are guided by the guide wire 6 to send the stone taking hanging basket to At an appropriate position in the bile duct, the operating handle 1 is operated, and the basket body 5 is extended to catch the gravel; the movable sheath tube 4 passes through the guide tube 7, and one end of the movable sheath tube 4 is inserted into the interior of the outer sheath tube 2 of the basket, and the movable sheath tube 4 is pulled by the net blue core wire 3 to drive the basket body 5 to move, so as to achieve the effect of retracting the basket body 5, and the other end of the movable sheath tube 4 is provided with a connecting column 8, and the end of the connecting column 8 is provided with a connecting head 9, and the basket body 5 includes a basket head 51 and a basket wire 52, and the two ends of the basket wire 52 are respectively connected to the connecting head 9 and the basket head 51, and a limiting ball 91 connected to the end of the basket wire 52 is provided on the side of the connecting head 9, and a reinforcing filler 92 is provided on the outer surface of the connecting head 9, and the end of the basket wire 52 is limited by the limiting ball 91, and secondly, the basket wire 52 part located in the connecting head 9 is reinforced by the reinforcing filler 92 filled with molten metal, so as to increase the connection area of the end of the basket wire 52 and avoid the breakage of the basket wire 52 during the stone removal process.
[0023] In this embodiment, the guide wire 6 and the guide hole 71 are clearance-matched, the guide tube 7 is slidably connected to the guide wire 6, and the guide tube 7 is guided by the guide wire 6, so that the basket body 5 can smoothly enter the bile duct.
[0024] In this embodiment, the guide tube 7 is a hollow round tube structure that is wide in the middle and narrow at both ends. The outer surface of the guide tube 7 is smooth and does not affect the insertion into the bile duct.
[0025] In this embodiment, the centers of the movable sheath 4, the guide tube 7, the connecting column 8 and the connecting head 9 are on the same axis, and the opposite sides of the connecting column 8 are respectively provided with grooves and through holes, the grooves and the through holes are connected, the end of the basket wire 52 is matched with the through hole gap, the limiting ball 91 is matched with the groove gap, and the outer surface of the connecting head 9 is provided with a conical filling groove, the filling groove is located at the notch end of the outer surface of the connecting head 9 is wide, and the filling groove is located at the end inside the connecting head 9 is narrow, the filling groove is connected with the through hole, the end of the basket wire 52 passes through the center of the limiting ball 91, the basket wire 52 and the limiting ball 91 and the reinforcing filler 92, the end of the basket wire 52 is firmly secured by the limiting ball 91 and the reinforcing filler 92, the area of the firmly connected end of the basket wire 52 is increased, and the basket wire 52 is prevented from breaking during the stone removal process.
[0026] The working principle and use process of this utility model:
[0027] When the stone removal basket is in use, the guide wire 6 passes through the guide tube 7, one end of the guide wire 6 is retained in the bile duct, and then one end of the stone removal basket is inserted into the bile duct. Under the guidance of the guide wire 6, the end of the basket outer sheath 2 and the guide tube 7 send the stone removal basket to a suitable position in the bile duct, and the handle 1 is operated. The basket body 5 extends out and catches the gravel. The guide tube 7 is guided by the guide wire 6, and the basket body 5 can smoothly enter the bile duct. The end of the basket wire 52 is firmly secured by the limiting ball 91 and the reinforcing filler 92, which increases the area of the firmly connected end of the basket wire 52 and avoids the breakage of the basket wire 52 during the stone removal process.
[0028] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A basket structure that can pass a guide wire, comprising a handle (1) used for guiding by a guide wire (6), a basket outer sheath tube (2), a basket core wire (3), a movable sheath tube (4), and a basket body (5), wherein the basket core wire (3) penetrates into the basket outer sheath tube (2), and the movable sheath tube (4) is connected to the basket core wire (3) and the basket body (5), characterized in that: The end of the basket outer sheath tube (2) is provided with a guide tube (7), the outer surface of the guide tube (7) is provided with a guide hole (71), the movable sheath tube (4) passes through the guide tube (7), one end of the movable sheath tube (4) is inserted into the interior of the basket outer sheath tube (2), the other end of the movable sheath tube (4) is provided with a connecting column (8), the end of the connecting column (8) is provided with a connecting head (9), the basket body (5) comprises a basket head (51) and a basket wire (52), the two ends of the basket wire (52) are respectively connected to the connecting head (9) and the basket head (51), a limiting ball (91) connected to the end of the basket wire (52) is provided on the side of the connecting head (9), and a reinforcing filler (92) is provided on the outer surface of the connecting head (9).
2. A wire-passable basket structure according to claim 1, characterized in that: The guide wire (6) and the guide hole (71) are clearance-matched, and the guide tube (7) is slidably connected to the guide wire (6).
3. A wire-passable basket structure according to claim 1, characterized in that: The guide tube (7) is a hollow circular tube structure which is wide in the middle and narrow at both ends.
4. A wire-passable basket structure according to claim 1, characterized in that: The centers of the movable sheath tube (4), the guide tube (7), the connecting column (8) and the connecting head (9) are located on the same axis, and opposite sides of the connecting column (8) are respectively provided with a groove and a through hole, and the groove and the through hole are connected.
5. A wire-passable basket structure according to claim 4, characterized in that: The end of the basket wire (52) is clearance-matched with the through hole, and the limiting ball (91) is clearance-matched with the groove.
6. A wire-passable basket structure according to claim 5, characterized in that: The outer surface of the connector (9) is provided with a conical filling groove, the filling groove is wide at one end of the notch located on the outer surface of the connector (9), and is narrow at one end of the filling groove located inside the connector (9), and the filling groove is connected to the through hole.
7. A wire-passable basket structure according to claim 1, characterized in that: The end of the basket wire (52) passes through the center of the limiting ball (91), and the basket wire (52) is connected to the limiting ball (91) and the reinforcing filler (92).