A basket stone extraction device with biliary tract flushing function

Abstract

The utility model provides a kind of net basket stone extraction device with biliary tract flushing function, including catheter, fixed ring, guide wire, flush pipe, pipeline guide silk;Wherein, catheter is equipped with first lead-through cavity, and multiple second lead-through cavities;First through-hole is set in fixed ring middle part;Guide wire is worn in second lead-through cavity, and front end forms net basket;Flush pipe is installed in first lead-through cavity, with infusion cavity;Pipeline guide silk is worn in the infusion cavity of flush pipe. When using, the front end of catheter is sent to calculus place through endoscope;Physiological saline is injected in flush pipe, and calculus periphery adherend is washed;Then flush pipe is extracted, then guide wire is pushed to make net basket open and cover calculus, and is withdrawn with endoscope;After calculus is extracted, flush pipe is installed by pipeline guide silk, and is entered again to flush biliary tract and remove residue. The device reduces operation time and complexity, avoids multiple instruments cross into human body, and reduces biliary tract injury and bleeding risk.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and particularly relates to a basket stone extraction device with biliary tract flushing function. BACKGROUND

[0002] Biliary tract diseases are common digestive system diseases, covering various types such as stones, infections and stenosis, among which biliary tract stones are particularly common and often require surgical treatment. The key to surgery lies in accurate stone extraction while ensuring surgical safety and postoperative recovery. With the development of medical technology, choledochoscopy technology has been widely used in the treatment of biliary tract stones due to its minimally invasive, intuitive and efficient characteristics.

[0003] Cholangioscopy technology clearly observes the internal situation of the biliary tract through the guidance of an endoscope, thereby achieving accurate positioning and extraction of stones (as shown in Figure 10 Chinese patent document CN114391922A discloses a disposable stone extraction basket, which includes a sleeve, a sheath pipe is communicated with the upper end of the sleeve, a plug rod is inserted into the sleeve, a pulling steel wire is fixed to the upper end of the plug rod and matched with the sheath pipe, a basket assembly is connected to the upper end of the pulling steel wire, the basket assembly includes a connecting head, four basket wires are fixed to the upper end of the connecting head, and a basket metal head is fixed to the other end of the four basket wires. The technical solution disclosed in the above patent document increases the connecting mechanism on the basis of the original basket structure, ensures flexible stone extraction, effectively prevents the risk of metal head falling into the patient's body due to the falling of basket wires and metal head, reduces the operation difficulty of medical staff, improves the stone extraction efficiency, and makes the falling between the stone and the basket wire after the stone is extracted relatively simple and practical.

[0004] The technical solution described in the aforementioned patent literature uses an endoscope-guided stone retrieval basket to accurately remove gallstones. If the basket wires become detached from the metal head during retrieval, the basket head can be removed using two pull ropes in the connecting mechanism, along with wedge-shaped clips engaged within it. However, during stone retrieval, small fragments of gallstones, solid blood clots, or other impurities may remain in the bile duct. These impurities may affect the smooth progress of stone retrieval and could even lead to complications such as biliary tract infection. Therefore, after each large stone is removed, the doctor injects saline or other suitable flushing solution through a flushing tube to remove small fragments of gallstones, solid blood clots, or other impurities, maintaining the cleanliness and patency of the bile duct before proceeding to the next stone retrieval operation. The currently used traditional flushing method involves inserting a separate flushing tube into the patient's body under the guidance of a cholangioscope, through which the doctor injects saline or other suitable flushing solution into the bile duct. However, this method requires repeated manipulation of the cholangioscopy to adjust the position of the irrigation tube, which not only prolongs the operation time but also increases the risk of bile duct injury and bleeding, affecting postoperative recovery. Furthermore, the positioning and adjustment of the irrigation tube is difficult, and the irrigation fluid may not fully cover the bile duct area, leaving stone fragments behind and increasing the risk of infection and recurrence. More importantly, the repeated manipulation of the cholangioscopy causes additional discomfort and pain for the patient.

[0005] Therefore, designing a basket stone retrieval device that can thoroughly flush the bile duct area without repeatedly withdrawing the choledochoscope and without causing pain to the patient is a technical problem that has not yet been solved in the existing technology. Utility Model Content

[0006] Therefore, the technical problem to be solved by this utility model is to overcome the technical defects of the existing technology, which requires the stone retrieval basket and flushing pipe to enter the human body multiple times during the stone retrieval process, resulting in long operation time, high risk of bile duct damage and bleeding, and thus provide a basket stone retrieval device with bile duct flushing function that can reduce the number of times it enters the human body and has lower risk.

[0007] Therefore, this utility model provides a basket stone retrieval device with bile duct irrigation function, comprising:

[0008] The catheter has a first through cavity, the outer wall of the catheter forming the first through cavity has a certain thickness, and a plurality of second through cavities are uniformly disposed inside the outer wall of the catheter around the first through cavity, each of the second through cavities being open at both ends.

[0009] The fixing ring has a first through hole in the middle;

[0010] The guide wires, having several in number, are movably inserted into the second conductive cavity; the several guide wires extending from the front end of the second conductive cavity are bent and connected to the side wall of the fixing ring to form a basket; the guide wires extending from the rear end of the second conductive cavity can be pulled to control the shape and position of the basket.

[0011] A flushing tube is movably installed in the first conductive cavity, with its head end able to extend outward through the first through hole; the flushing tube has an infusion chamber inside.

[0012] A guide wire is inserted into the infusion chamber to guide and support the flushing tube.

[0013] As a preferred technical solution, the front end of the flushing tube is provided with multiple nozzles, and the outlet direction of the nozzles is oriented to the side, so as to achieve precise flushing of different parts of the bile duct; it also includes a syringe, which is connected to the rear end of the flushing tube for injecting flushing fluid.

[0014] As a preferred technical solution, a plurality of first fixing holes are evenly provided on the outer periphery of the fixing ring, and a plurality of guide wires are respectively connected to the plurality of first fixing holes to form the basket.

[0015] As a preferred technical solution, it also includes a handle, which is installed on the outer wall of the tail end of the catheter, and the handle is provided with a gripping ring for holding.

[0016] As a preferred technical solution, the handle has an installation cavity at its front end, and the handle is sleeved on the tail end of the catheter through the installation cavity.

[0017] As a preferred technical solution, the rear end of the handle has a pull-out cavity opposite to the mounting cavity.

[0018] As a preferred technical solution, the handle has an internal intermediate connecting cavity; the intermediate connecting cavity connects the mounting cavity and the pull-out cavity, and allows the flushing tube to pass through.

[0019] As a preferred technical solution, the outer periphery of the intermediate connecting cavity is provided with a plurality of intermediate connecting cavities opposite to the second connecting cavity; the intermediate connecting cavities connect the mounting cavity and the pull-out cavity, allowing the guide wire to pass through.

[0020] As a preferred technical solution, it also includes a control handle, which is movably mounted on the handle through the pull-out cavity; the front end of the control handle has several second mounting holes, and the rear end is fixedly provided with a push-pull ring; the control handle is fixedly connected to several guide wires passing through the intermediate guide cavity through several second mounting holes.

[0021] As a preferred technical solution, it also includes a guiding branch, which is integrally formed with the control handle, with one end extending outward at an angle and having a through cavity inside; the through cavity has openings at both ends, with one end opening facing and communicating with the middle connecting cavity on the handle, allowing the flushing tube to pass through.

[0022] The technical solution provided by this utility model has the following advantages:

[0023] This utility model relates to a basket stone retrieval device with biliary irrigation function, comprising a catheter, a fixing ring, guide wires, an irrigation tube, and a guide wire. The catheter has a first through-cavity, the outer wall of which has a certain thickness. Multiple second through-cavities are evenly distributed within the outer wall of the catheter surrounding the first through-cavity, each open at both ends. A first through-hole is provided in the center of the fixing ring. Several guide wires are movably inserted into the second through-cavities. Several guide wires extending from the front end of the second through-cavities are bent and connected to the side wall of the fixing ring to form a basket. Guide wires extending from the rear end of the second through-cavities can be pulled to control the shape and position of the basket. The irrigation tube is movably installed in the first through-cavity, with its tip extending outward through the first through-hole. The irrigation tube has an infusion chamber inside. The guide wire passes through the infusion chamber to guide and support the irrigation tube.

[0024] When using the basket stone retrieval device with bile duct irrigation function of this utility model, firstly, the specific location of the stone in the bile duct is determined by contrast imaging or imaging technology to provide precise guidance for subsequent treatment; then, the endoscope is moved to the location of the stone, and the catheter is inserted into the working channel on the endoscope and pushed to the location of the stone; when the tip of the catheter reaches the location of the stone, the irrigation tube is pushed to extend outward from the first through hole at the tip, and then a suitable irrigation solution such as physiological saline is injected into the infusion cavity from the end of the irrigation tube. The area around the stone is precisely rinsed through the tip to remove the attached substances and biliary sludge on the surface of the stone, making it easier to see the stone and its surrounding environment more clearly and improving the stone retrieval efficiency.

[0025] After flushing, withdraw the flushing tube, but keep the catheter and guidewire in the same position. Then, push the guidewire at the end of the catheter to open the basket to the appropriate size and shape of the stone. Under X-ray monitoring, slowly put the basket over the stone and gently pull it back to the endoscope tip for fixation. Then, remove the stone from the body along with the endoscope to complete one stone removal. For patients with multiple stones in the body, the flushing tube needs to be reset through the guidewire, and the guidewire needs to be pulled to reset the basket. Then repeat the above process until all stones are removed.

[0026] After stone removal, to ensure effectiveness, the flushing tube needs to be reset, the basket repositioned, the catheter tip advanced, and the flushing tube extended to flush out any remaining fragments or material in the bile duct. This flushing helps to thoroughly remove these residues, preventing them from forming new stones or causing inflammation. This novel basket-type stone removal device with bile duct flushing function integrates flushing and stone removal, significantly reducing surgical time and complexity, avoiding multiple instrument insertions, and lowering the risk of bile duct injury and bleeding. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the prior art or specific embodiments of this utility model, the accompanying drawings used in the description of the prior art or specific embodiments are briefly introduced below.

[0028] Figure 1 This is a schematic diagram of the overall structure of the basket stone retrieval device with bile duct flushing function of this utility model.

[0029] Figure 2 yes Figure 1 A diagram showing the syringe after installation.

[0030] Figure 3 It is Figure 2 A sectional view.

[0031] Figure 4 yes Figure 3 Enlarged structural diagram of part A.

[0032] Figure 5 yes Figure 3 Enlarged structural diagram of section B.

[0033] Figure 6 This is a schematic diagram of the fixed ring structure.

[0034] Figure 7 This is an enlarged schematic diagram of the structure at the end of the catheter.

[0035] Figure 8 yes Figure 5 Half-section view of the middle handle.

[0036] Figure 9 yes Figure 5 Half-section view of the control handle.

[0037] Figure 10 This is a schematic diagram of the existing stone retrieval basket used in conjunction with an endoscope.

[0038] Figure 11 This is a schematic diagram illustrating the principle of stone retrieval and rinsing using the basket stone retrieval device of this application.

[0039] Figure 12This is a schematic diagram of the explosive structure of the basket stone retrieval device of this application.

[0040] Reference numerals: 1. Catheter; 11. First through-cavity; 12. Second through-cavity; 2. Guidewire; 21. Basket; 3. Fixing ring; 31. First through-hole; 32. First fixing hole; 4. Flushing tube; 41. Infusion chamber; 42. Guide wire; 43. Nozzle; 5. Syringe; 6. Handle; 61. Grip ring; 62. Intermediate connecting cavity; 63. Mounting cavity; 64. Pull-out cavity; 65. Intermediate through-cavity; 7. Control handle; 71. Second mounting hole; 72. Push-pull ring; 73. Through-branch; 74. Through-cavity. Detailed Implementation

[0041] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0042] It should be noted that the terms "first," "second," etc., in the claims and specification of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such as a process, method, system, product, or device that includes a series of steps or units, not limited to those steps or units explicitly listed, but may also include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0043] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0044] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] This embodiment provides a basket stone retrieval device with biliary irrigation function, such as... Figures 1-9 As shown, it includes: a catheter 1, a fixing ring 3, a guide wire 2, a flushing tube 4, and a guide wire 42; wherein, the catheter 1 has a first through cavity 11 that extends through it, and the outer wall of the catheter 1 forming the first through cavity 11 has a certain thickness, and a plurality of second through cavities 12 are uniformly arranged inside the outer wall of the catheter 1 around the first through cavity 11, each of the second through cavities 12 being open at both ends; the fixing ring 3 has a first through hole 31 in the middle; the guide wire 2 has several strands that are movably inserted into the second through cavities 12. Several guide wires 2 extending from the front end of the second conductive cavity 12 are bent and connected to the side wall of the fixing ring 3 to form a basket 21. The guide wires 2 extending from the rear end of the second conductive cavity 12 can be pulled to control the shape and position of the basket 21. The flushing tube 4 is movably installed in the first conductive cavity 11, and its head end can extend outward through the first through hole 31. The flushing tube 4 has an infusion chamber 41 inside. The tube guide wire 42 passes through the infusion chamber 41 to guide and support the flushing tube 4.

[0046] When using the basket stone retrieval device with bile duct irrigation function in this embodiment, firstly, the specific location of the stone in the bile duct is determined using contrast or imaging technology to provide precise guidance for subsequent treatment; then, the endoscope is moved to the location of the stone, and the catheter 1 is inserted into the working channel on the endoscope and pushed to the location of the stone; when the tip of the catheter 1 reaches the location of the stone, the irrigation tube 4 is pushed so that the tip extends outward from the first through hole 31, and then a suitable irrigation solution such as physiological saline is injected into the infusion chamber 41 from the end of the irrigation tube 4. The area around the stone is precisely rinsed through the tip to remove the attachments and biliary sludge on the surface of the stone, making it easier to see the stone and its surrounding environment more clearly and improving the stone retrieval efficiency.

[0047] After flushing, remove the flushing tube 4, but keep the positions of catheter 1 and guidewire 2 unchanged; then, push the guidewire 2 at the end of catheter 1 to open the basket 21 to the appropriate size and shape of the stone; under X-ray monitoring, slowly put the basket 21 over the stone and gently pull it back to the end of the endoscope for fixation; then, remove the stone from the body along with the endoscope to complete one stone removal; for patients with multiple stones in the body, it is necessary to reset the flushing tube 4 through the guidewire 42 and pull the guidewire 2 to reset the basket 21, and then repeat the above process until all stones are removed.

[0048] After stone removal, to ensure effectiveness, the flushing tube 4 needs to be reset, the basket 21 reset, the tip of the catheter 1 advanced, and the flushing tube 4 extended to flush out any remaining fragments or material in the bile duct. This flushing helps to thoroughly remove these residues, preventing them from forming new stones or causing inflammation. The basket stone retrieval device with bile duct flushing function in this embodiment significantly reduces surgical time and complexity by integrating flushing and stone retrieval functions, avoiding multiple instrument cross-insertions, and reducing the risk of bile duct injury and bleeding.

[0049] like Figure 4 As shown, the front end of the flushing tube 4 has multiple nozzles 43, with the outlet direction of the nozzles 43 facing to the side, to achieve precise flushing of different parts of the bile duct; it also includes a syringe 5, which is connected to the rear end of the flushing tube 4 for injecting flushing fluid. Using the syringe 5, suitable flushing fluids such as physiological saline can be injected into the infusion chamber 41, allowing the flushing fluid to precisely flush the area around the stone through the nozzles 43, thus facilitating more efficient stone removal.

[0050] like Figure 6 As shown, a plurality of first fixing holes 32 are evenly distributed on the outer periphery of the fixing ring 3, and a plurality of guide wires 2 are respectively connected to the plurality of first fixing holes 32 to form the net basket 21. The plurality of first fixing holes 32 on the fixing ring 3 are connected to the guide wires 2, forming a stable and easily controllable net basket 21; this design allows the net basket to be adjusted in shape and position as needed to accommodate stones of different sizes and shapes, improving the flexibility of stone removal operations.

[0051] like Figure 1 As shown, it also includes a handle 6, which is installed on the outer wall of the tail end of the catheter 1. The handle 6 has a grip ring 61 on its outside for holding. The grip ring 61 on the handle 6 provides a grip position for the operator, enabling the doctor to operate the device stably.

[0052] like Figure 5 and 8 As shown, the handle 6 has an installation cavity 63 at its front end, and the handle 6 is sleeved on the tail end of the guide tube 1 through the installation cavity 63.

[0053] like Figure 8 As shown, the handle 6 has a pull-out cavity 64 at its rear end, which is opposite to the mounting cavity 63. The design of the pull-out cavity 64 allows the guide wire to pass smoothly, facilitating precise control of the stone removal process and improving the flexibility and efficiency of the surgery.

[0054] like Figure 5 and 8As shown, the handle 6 has an internal intermediate connecting cavity 62; the intermediate connecting cavity 62 connects the mounting cavity 63 and the pull-out cavity 64, and allows the flushing tube 4 to pass through.

[0055] like Figure 8 As shown, the outer periphery of the intermediate connecting cavity 62 is provided with a plurality of intermediate connecting cavities 65 opposite to the second connecting cavity 12; the intermediate connecting cavity 65 connects the mounting cavity 63 and the pull-out cavity 64, allowing the guide wire 2 to pass through.

[0056] like Figure 3 and Figure 5 As shown, it also includes a control handle 7, which is movably mounted on the handle 6 via the pull-out cavity 64. The front end of the control handle 7 has several second mounting holes 71, and the rear end is fixedly provided with a push-pull ring 72. The control handle 7 is fixedly connected to several guide wires 2 passing through the intermediate guide cavity 65 via the several second mounting holes 71. The second mounting holes 71 at the front end of the control handle 7 ensure a stable connection with the guide wires 2. Simultaneously, the control handle 7 can move along the handle 6. By pulling the push-pull ring 72 at the end of the control handle 7 backward, the basket can be effectively controlled to retract, firmly securing the stones, making the entire operation both convenient and reliable.

[0057] like Figure 5 and Figure 9 As shown, it also includes a guiding branch 73, which is integrally formed with the control handle 7. One end of the guiding branch 73 extends outward at an angle and has a through cavity 74 inside. The through cavity 74 has openings at both ends, and one end of the opening is opposite to and connected to the middle connecting cavity 62 on the handle 6, allowing the flushing tube 4 to pass through.

[0058] For ease of understanding, Figure 11 This is a schematic diagram illustrating the principle of the stone retrieval and rinsing operations of the basket stone retrieval device, used to show the relative positional relationship between the stone retrieval basket and the rinsing pipe 4 during the stone retrieval and rinsing operations. Figure 12 This is a schematic diagram of the explosive structure of the basket stone retrieval device, which helps to understand the individual structure of each component.

[0059] The basket stone retrieval device with bile duct irrigation function in this embodiment is used as follows:

[0060] First, contrast imaging or other imaging techniques are needed to accurately locate the stones within the bile duct to provide precise guidance for subsequent treatment. Then, the endoscope is moved to the location of the stone, and catheter 1 is inserted into the working channel of the endoscope and pushed to the stone's location. Once the tip of catheter 1 reaches the stone, the flushing tube 4 is pushed so that its tip extends outward from the first through-hole 31. Then, syringe 5 is connected to the end of the flushing tube 4, and appropriate flushing fluid, such as saline, is injected into the infusion chamber 41 using syringe 5. The flushing fluid precisely flushes the area surrounding the stone through nozzle 43, thereby removing deposits and biliary sludge from the stone's surface. This process helps to visualize the stone and its surrounding environment more clearly, thus improving the efficiency of stone removal.

[0061] After flushing, withdraw the flushing tube 4, but keep the positions of catheter 1 and guidewire 2 unchanged during this process; then, hold handle 6 with one hand and push the push-pull ring 72 on control handle 7 with the other hand; this action causes guidewire 2 to push basket 21 to open to the appropriate size and shape of the stone; under X-ray monitoring, slowly put basket 21 over the stone; then, gently pull the push-pull ring 72 on control handle 7, which causes guidewire 2 to drive basket 21 to contract and pull the stone to the front end of the endoscope for fixation; then, the stone is withdrawn from the body along with the endoscope, thus completing one stone removal operation; for patients with multiple stones in the body, it is necessary to use guide wire 42 to insert flushing tube 4 through lumen 74 into the first guiding lumen 11 of catheter 1 to ensure that the flushing function is available again; then repeat the above process until all stones are removed.

[0062] After removing the stones, to ensure effectiveness, the flushing tube 4 needs to be reset, the basket 21 needs to be reset, and the tip of the catheter 1 needs to be inserted into the body again. Push the flushing tube 4 so that the tip extends outward from the first through hole 31. Then connect the syringe 5 to the end of the flushing tube 4. Use the syringe 5 to inject appropriate flushing fluid such as physiological saline into the infusion chamber 41. The flushing fluid flushes the small amount of fragments or residual substances in the bile duct through the nozzle 43. The flushing at this time helps to thoroughly remove these residues and prevent them from forming new stones or causing inflammation.

[0063] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this innovative technical solution.

Claims

1. A basket stone retrieval device with bile duct irrigation function, characterized in that, include: The catheter (1) has a first through cavity (11) that is through it. The outer wall of the catheter (1) forming the first through cavity (11) has a certain thickness. A plurality of second through cavities (12) are uniformly through the inner wall of the catheter (1) surrounding the first through cavity (11). Each second through cavity (12) is open at both ends. The fixing ring (3) has a first through hole (31) in the middle. The guide wire (2) has several strands and is movably inserted into the second conductive cavity (12); the several guide wires (2) extending from the front end of the second conductive cavity (12) are bent and connected to the side wall of the fixing ring (3) to form a basket (21); the guide wires (2) extending from the rear end of the second conductive cavity (12) can be pulled to control the shape and position of the basket (21); The flushing tube (4) is movably installed in the first through cavity (11), and its head end can extend outward through the first through hole (31); the flushing tube (4) has an infusion cavity (41) inside. A guide wire (42) is inserted into the infusion chamber (41) to guide and support the flushing tube (4).

2. The basket stone retrieval device with biliary irrigation function according to claim 1, characterized in that: The front end of the flushing pipe (4) is provided with multiple nozzles (43), and the outlet direction of the nozzles (43) is towards the side, so as to achieve precise flushing of different parts of the bile duct. It also includes a syringe (5), which is connected to the rear end of the flushing tube (4) for injecting flushing fluid.

3. The basket stone retrieval device with biliary irrigation function according to claim 1, characterized in that: The outer periphery of the fixing ring (3) is provided with a plurality of first fixing holes (32), and a plurality of guide wires (2) are respectively connected to the plurality of first fixing holes (32) to form the basket (21).

4. The basket stone retrieval device with biliary irrigation function according to claim 1, characterized in that: It also includes a handle (6), which is installed on the outer wall of the tail end of the conduit (1), and the handle (6) is provided with a grip ring (61) for holding.

5. The basket stone retrieval device with biliary irrigation function according to claim 4, characterized in that: The handle (6) has an installation cavity (63) at its front end, and the handle (6) is sleeved on the tail end of the conduit (1) through the installation cavity (63).

6. The basket stone retrieval device with biliary irrigation function according to claim 5, characterized in that: The handle (6) has a pull-out cavity (64) at its rear end, which is opposite to the mounting cavity (63).

7. The basket stone retrieval device with biliary irrigation function according to claim 6, characterized in that: The handle (6) has an internal intermediate connecting cavity (62); the intermediate connecting cavity (62) connects the mounting cavity (63) and the pull-out cavity (64), and allows the flushing tube (4) to pass through.

8. The basket stone retrieval device with biliary irrigation function according to claim 7, characterized in that: The outer periphery of the intermediate connecting cavity (62) is provided with a plurality of intermediate connecting cavities (65) opposite to the second connecting cavity (12); the intermediate connecting cavity (65) connects the mounting cavity (63) and the pull-out cavity (64) to allow the guide wire (2) to pass through.

9. The basket stone retrieval device with biliary irrigation function according to claim 6, characterized in that: It also includes a control handle (7), which is movably mounted on the handle (6) via the pull-out cavity (64); The front end of the control handle (7) has several second mounting holes (71), and the rear end is fixedly provided with a push-pull ring (72). The control handle (7) is fixedly connected to a number of guide wires (2) passing through the intermediate conduction cavity (65) via a number of second mounting holes (71).

10. The basket stone retrieval device with biliary irrigation function according to claim 7, characterized in that: It also includes a connecting branch (73), which is integrally formed with the control handle (7), with one end extending outward at an angle and having a through cavity (74) inside; the through cavity (74) has openings at both ends, with one end opening opposite to and connected to the middle connecting cavity (62) on the handle (6), allowing the flushing pipe (4) to pass through.

Images