Special rotatable lithotripsy and lithotripsy mesh basket under biliopancreatic duct endoscope

Abstract

The invention provides a special rotatable stone breaking and removing mesh basket under a biliopancreatic duct endoscop.The rotatable stone breaking and removing mesh basket comprises a tube shell, a drill bit cap, a mesh basket body, a drill bit, a traction part and a push-pull handle, one end of the tube shell is in driving connection with external driving equipment, the push-pull handle is slidably connected to the tube shell, the traction part is located in the tube shell, and the drill bit cap is connected with the mesh basket body. The two ends of the traction part are fixedly connected with the push-pull handle and the net basket respectively; the mesh basket penetrates through the drill bit and is fixedly connected with the drill bit cap; the push-pull handle can pull the traction part, the mesh basket and the drill bit cap to move back and forth when moving back and forth along the tube cavity of the tube shell under the action of external force, so that the mesh basket has an open state and a closed state, the mesh basket can sleeve stones in the open state, and the mesh basket can tighten the stones to the drill bit in the closed state. When the handle is pulled backwards, the drill bit pierces into the stone, external driving equipment drives the drill bit to rotate to break the stone, and the stone breaking and removing efficiency and accuracy are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a rotatable lithotripsy basket specially used under a choledochopancreatic ductoscope. Background Art

[0002] Biliary stones are a common and frequently occurring clinical disease. Gallstones can induce complications such as acute cholecystitis, acute cholangitis, obstructive jaundice, and acute pancreatitis, and in severe cases, can even lead to shock, endangering the patient's life. Previously, biliary stones were mostly treated surgically. With the advancement of minimally invasive techniques and increasing awareness of organ function protection, biliary stones are now mostly treated with endoscopic retrograde cholangiopancreatography (ERCP) stone removal. The advent of choledochoscopes, in particular, has made endoscopic stone removal of gallbladder and intrahepatic bile duct stones possible. For smaller stones, a stone removal basket can be inserted through the choledochoscope's operating channel, opened, and then the stone can be removed. However, for larger stones, which cannot pass smoothly through the cystic duct, intrahepatic bile duct, or duodenal papilla, lithotripsy is often used, fragmenting the stone and then removing it with a stone removal basket.

[0003] Currently, choledochoscopic lithotripsy techniques include: electrohydraulic lithotripsy, laser lithotripsy, basket mechanical lithotripsy, etc.

[0004] The applicant has discovered that the existing technology has at least the following technical problems: whether it is laser lithotripsy or electrohydraulic lithotripsy, it is necessary to insert an optical fiber / electrode so that it contacts the surface of the stone for lithotripsy. However, the stone is easy to move, which greatly increases the distance between the optical fiber / electrode and the stone, reducing the efficiency of lithotripsy and increasing the difficulty of lithotripsy. The bile duct space is narrow, the visual field under the choledochoscopic microscope is poor, and the use of optical fiber / electrode can easily damage the bile duct wall. In addition, after lithotripsy, the optical fiber / electrode needs to be withdrawn to the outside of the choledochoscopic microscope, and then a tool such as a stone removal basket is inserted to remove the stone, which increases the operation time. Therefore, the lithotripsy equipment in the prior art has low efficiency and poor accuracy in lithotripsy and stone removal, and poses high risks and harm to patients. Summary of the Invention

[0005] The present invention aims to provide a rotatable lithotripsy basket for cholangiopancreatoscopic endoscopic lithotripsy, addressing the technical issues of low efficiency and poor accuracy in lithotripsy and retrieval in existing cholangioscopic lithotripsy devices. The various technical effects achieved by the preferred technical solutions of the present invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The present invention provides a rotatable lithotripsy basket for use under a biliary and pancreatic ductoscope, comprising a housing, a drill cap, a basket, a drill bit, a traction unit, and a push-pull handle, wherein:

[0008] One end of the tube shell is connected to an external driving device so that the entire tube shell can rotate under the action of an external force;

[0009] The push-pull handle is slidably connected to the tube shell, the traction part is located inside the tube shell, and both ends of the traction part are fixedly connected to the push-pull handle and the net basket respectively;

[0010] The drill bit is fixed to the other end of the tube shell, and the mesh basket passes through the drill bit and is fixedly connected to the drill bit cap; when the push-pull handle reciprocates along the tubular cavity of the tube shell under the action of external force, it can pull the traction part, the mesh basket and the drill bit cap to reciprocate, so that the mesh basket has an expanded state and a collapsed state, wherein, when in the expanded state, the mesh basket can sheath the stone, and when in the collapsed state, the mesh basket can tighten the stone to the drill bit.

[0011] Preferably, the drill bit is provided with a thread hole, the thread hole is communicated with the tube cavity of the tube shell, and the mesh basket passes through the corresponding thread hole and is fixedly connected to the drill bit cap.

[0012] Preferably, the mesh basket comprises two or more mesh wires, the number of the wire holes is arranged in one-to-one correspondence with the number of the mesh wires, one end of the mesh wire passes through the corresponding wire hole and is fixed to the drill cap, and the other ends of all the mesh wires are fixed to the same slider, and the slider is fixedly connected to the traction part;

[0013] When in the expanded state, a gap is formed between adjacent mesh wires for stones to pass through.

[0014] Preferably, the drill bit cap is an arc-shaped structure, and the concave side of the arc-shaped structure is fixedly connected to the mesh basket; and when the mesh basket is in the retracted state, the drill bit cap can wrap the drill bit.

[0015] Preferably, the drill bit includes a conical head, the tip of the conical head is arranged toward the drill bit cap, a groove is arranged on the peripheral wall of the conical head, the side wall of the groove is an inclined surface, and the wire hole is arranged on the inclined surface.

[0016] Preferably, the traction part includes a traction rope, both ends of which are fixedly connected to the net basket and the push-pull handle respectively, the traction rope and the net basket are both made of memory metal material, and the traction rope and the tube shell are bendable.

[0017] Preferably, a connecting piece is provided in the tube shell, the connecting piece is slidably connected to the tube shell, the connecting piece is fixedly connected to the traction part, and the connecting piece extends out of the tube shell and is fixedly connected to the push-pull handle.

[0018] Preferably, the rotatable lithotripsy basket further comprises a rotating ring and a fixing plate, wherein:

[0019] The rotating ring is fixedly connected to the tube shell. The outer diameter of the rotating ring is larger than the outer diameter of the tube shell. The fixing plate is fixed to one end of the rotating ring away from the tube shell for driving connection with an external driving device.

[0020] Preferably, the outer diameters of the drill cap and the tube shell are both less than or equal to 2 mm.

[0021] Preferably, the handle is provided with a grip ring for the user's fingers to pass through.

[0022] The rotatable lithotripsy basket for biliary and pancreatic ductoscopy provided by the present invention has the following beneficial effects compared with the prior art: by pushing the push-pull handle in the direction of the drill bit, the traction part, the basket and the drill cap move synchronously, and the basket is in an expanded state, which can be used to trap stones. After the basket wire traps the stone, the handle is pulled back to drive the basket to tighten the stone and close to the tip of the drill bit. The drill bit contacts the stone and the stone will not move; the handle is pulled back further to make the tip of the drill bit penetrate into the stone; an external driving device drives the tube shell to drive the drill bit to rotate, causing the stone to break. The broken stone is then removed by the stone removal operation: the basket wire is unfolded to trap the stone, and after the stone is tightly trapped, it is withdrawn from the bile duct or pancreatic duct together with the biliary scope. The rotatable lithotripsy basket for biliary and pancreatic ductoscopy effectively improves the efficiency and accuracy of stone crushing and stone removal, and reduces the harm and risk to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of the rotatable lithotripsy basket dedicated for use under a choledochopancreatoscope according to this embodiment, when the basket is in an expanded state;

[0025] Figure 2 This is a structural diagram of the rotatable lithotripsy basket dedicated for use under a choledochopancreatoscope according to this embodiment, when the basket is in a folded state;

[0026] Figure 3 This is a partial enlarged view of the basket in the expanded state;

[0027] Figure 4 This is a partial enlarged view of the basket in the folded state;

[0028] Figure 5 It is a structural diagram of the drill bit.

[0029] In the figure, 1 is the tube shell; 101 is the tube cavity; 2 is the drill cap; 3 is the mesh basket; 31 is the mesh wire; 32 is the slider; 4 is the drill bit; 41 is the conical head; 42 is the inclined surface; 43 is the wire hole; 5 is the traction part; 6 is the push-pull handle; 61 is the holding ring; 7 is the connecting piece; 8 is the rotating ring; 9 is the fixing piece; 10 is the handle buckle; 11 is the first slide groove; 12 is the second slide groove; 20 is the stone. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center," "length," "width," "height," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and "side" and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] The embodiment of the present invention provides a rotatable lithotripsy basket specifically for use under a cholangiopancreatoscopic approach, which effectively improves the efficiency and accuracy of lithotripsy and stone removal, and reduces harm and risks to patients.

[0033] The following combination Figure 1-Figure 5 The technical solution provided by the present invention is described in more detail.

[0034] See also Figure 1-Figure 5As shown, the present invention provides a rotatable lithotripsy basket specially used for biliary and pancreatic ductoscopy, comprising a tube shell 1, a drill cap 2, a net basket 3, a drill bit 4, a traction part 5 and a push-pull handle 6, wherein: one end of the tube shell 1 is driven and connected to an external driving device, so that the entire device can be rotated under the action of external force; the push-pull handle 6 is slidably connected to the tube shell 1, the traction part 5 is located inside the tube shell 1, and the two ends of the traction part 5 are respectively fixedly connected to the push-pull handle 6 and the net basket 3; the drill bit 4 is fixed to the other end of the tube shell 1, and the net basket 3 passes through the drill bit 4 and is fixedly connected to the drill cap 2; when the push-pull handle 6 moves back and forth along the tubular cavity 101 of the tube shell 1 under the action of external force, it can pull the traction part 5, the net basket 3 and the drill cap 2 to move back and forth, so that the net basket 3 has an expanded state and a retracted state, wherein, when in the expanded state, the net basket 3 can sheath the stones 20, and when in the retracted state, the net basket 3 can tighten the stones 20 to the drill bit 4.

[0035] The housing 1 is made of a hard metal with a certain degree of hardness and tension, allowing it to bend to a certain extent with a choledochoscope or cholangiopancreatoscope. The metal tube has a certain thickness and contains a lumen 101 to accommodate a traction member 5, which can be a metal rope. The front end of the traction member 5 is welded to the drill bit 4, and the rear end is welded to a push-pull handle 6. The drill bit 4 and the housing 1 can rotate synchronously 360° when driven by an external drive device, making it easier for the drill bit 4 to break up the stones 20. The external drive device can be a mechanical retraction gun commonly used in medical devices.

[0036] Among them, the push-pull handle 6 moves back and forth along the axial direction of the tube shell 1 under the action of external force. When the push-pull handle 6 moves toward the drill bit 4, the net basket 3 can be in an expanded state. When in the expanded state, the net basket 3 is pushed out and stretched into a net shape; when the push-pull handle 6 moves in a direction away from the drill bit 4, the net basket 3 can be in a retracted state. When in the retracted state, the net basket 3 is recovered into the tubular cavity 101 of the tube shell 1.

[0037] The lithotripsy principle of this embodiment is as follows: After the basket 3 has received the stone 20, the push-pull handle 6 is pulled back, causing the basket 3 to tighten around the stone 20 and bring it close to the tip of the tapered drill bit 4. At this point, the basket 3 secures the stone 20, preventing the drill bit 4 from contacting the stone 20 and preventing it from shifting. The handle is then pulled back further, causing the tip of the drill bit 4 to penetrate the interior of the stone 20. Simultaneously, the tubular housing 1 is rotated, driving the drill bit 4 to rotate left and right, thereby fragmenting the stone 20. The fragmented stone 20 is then removed by expanding the basket 3 to receive the fragments. After the fragments are firmly secured, they are withdrawn from the bile duct or pancreatic duct along with the choledochoscope.

[0038] As an alternative embodiment, see Figure 3-Figure 5 As shown, the drill bit 4 is provided with a thread hole 43, which is connected to the tubular cavity 101 of the tube shell 1. The mesh basket 3 passes through the corresponding thread hole 43 and is fixedly connected to the drill head 2. The thread hole 43 on the drill bit 4 facilitates the passage of the mesh basket 3, thereby realizing the change of the mesh basket 3 in different states.

[0039] For details, see Figure 3-Figure 5 As shown, the mesh basket 3 includes more than two mesh wires 31, and the number of wire holes 43 is set in a one-to-one correspondence with the number of mesh wires 31. One end of the mesh wire 31 passes through the corresponding wire hole 43 and is fixed to the drill cap 2. The other ends of all mesh wires 31 are fixed to the same slider 32, and the slider 32 is fixedly connected to the traction part 5; when in the expanded state, a gap is formed between adjacent mesh wires 31 for the stone 20 to pass through.

[0040] The mesh basket 3 of this embodiment includes more than two mesh wires 31. Since one end of all the mesh wires 31 is fixed to the slider 32, when the push-pull handle 6 pushes the traction part 5 and the slider 32 toward the drill bit 4, the mesh wires 31 pass through the wire holes 43 and extend out of the tube shell 1, and open to an expanded state. At this time, the distance between the meshes increases, and the stone 20 is captured by the mesh basket 3 through the gap between two adjacent meshes. The handle is pulled back further, so that the tip of the drill bit 4 penetrates the interior of the stone 20; the external driving device drives the tube shell 1 to drive the drill bit 4 to rotate, causing the stone 20 to break.

[0041] The structure of the basket 3 is convenient for collecting the stones 20 and pulling the stones 20 to the drill bit 4 to break the stones 20. It is easy to use and efficient.

[0042] As an alternative embodiment, see Figure 1-Figure 4 As shown, the drill cap 2 of this embodiment is an arc-shaped structure, and the concave side of the arc-shaped structure is fixedly connected to the mesh basket 3; and when the mesh basket 3 is in a retracted state, the drill cap 2 can wrap the drill bit 4.

[0043] The drill cap 2 is an arc-shaped structure, specifically a mushroom shape, with a smooth outer surface and a smooth concave inner surface. It is welded to all the mesh wires 31. The mesh wires 31 are pulled back and the drill cap 2 is buckled with the front end of the tube shell 1 to wrap the drill bit 4 to prevent the drill bit 4 from damaging the choledochoscope and bile and pancreatic duct tissue.

[0044] As an alternative embodiment, see Figure 3-Figure 5 As shown, the drill bit 4 includes a conical head 41 , the tip of the conical head 41 is arranged toward the drill head cap 2 , a groove is arranged on the peripheral wall of the conical head 41 , the side wall of the groove is an inclined surface 42 , and the thread hole 43 is arranged on the inclined surface 42 .

[0045] The drill bit 4 of this embodiment is a hard metal head with a sharp tip. A groove is provided on the peripheral wall of the conical head 41. The side wall of the groove is an inclined surface 42. The mesh 31 slides forward or backward from the wire hole 43. The portion of the drill bit 4 other than the conical head 41 is a base. The base is about 3 cm long (but not limited to this size) and is welded to the tube shell 1 to form a strong fulcrum.

[0046] As an optional implementation, the traction part 5 of this embodiment includes a traction rope, the two ends of which are fixedly connected to the net basket 3 and the push-pull handle 6 respectively. The traction rope and the net basket 3 are both made of memory metal material, and the traction rope and the tube shell 1 are bendable.

[0047] The memory metal material can be a nickel-titanium alloy. When the push-pull handle 6 is pushed, the mesh wires 31 extend from the corresponding holes 43 in the drill bit 4, expanding to form a net to trap the stone 20. The ends of all the wires of the basket 3 form a metal rope at the integrated slider 32, which reciprocates along the axial direction of the tube shell 1 with the traction unit 5 and the slider 32.

[0048] As an alternative embodiment, see Figure 1 and Figure 2 As shown, a connecting piece 7 is provided in the tube housing 1 of this embodiment. The connecting piece 7 is slidably connected to the tube housing 1 , fixedly connected to the traction part 5 , and extends out of the tube housing 1 and fixedly connected to the push-pull handle 6 .

[0049] The function of the connecting piece 7 is to connect the push-pull handle 6 and the traction part 5. Figure 1 and Figure 2 As shown, a first slide groove 11 and a second slide groove 12 are provided on the tube shell 1, the push-pull handle 6 slides along the first slide groove 11, and the connecting piece 7 slides along the second slide groove 12. The inner part of the connecting piece 7 is fixedly connected to the traction part 5, and the outer part of the connecting piece 7 is fixedly connected to the push-pull handle 6, so that the push-pull handle 6 drives the traction part 5 to move.

[0050] As an alternative embodiment, see Figure 1 and Figure 2 As shown, the rotatable stone crushing basket also includes a rotating ring 8 and a fixing plate 9, wherein the rotating ring 8 is fixedly connected to the tube shell 1, the outer diameter of the rotating ring 8 is larger than the outer diameter of the tube shell 1, and the fixing plate 9 is fixed to the end of the rotating ring 8 away from the tube shell 1 for driving connection with an external driving device. Figure 2 A handle buckle 10 is also fixed on the tube shell 1 to prevent the push-pull handle 6 from sliding forward.

[0051] The push-pull handle 6 is made of hard metal and is located on the outer surface of the tube shell 1. It can be freely pushed forward or backward between the handle buckle 10 and the rotating ring 8. The push-pull handle 6 - connecting piece 7 - traction part 5 - slider 32 - mesh basket 3 - drill bit cap 2 are connected in sequence and can be pushed forward or backward synchronously. Pushing forward can release the mesh basket 3 to expand and remove the stone 20, and moving backward can tighten the mesh basket 3 to make the stone 20 close to the conical drill bit 4.

[0052] There is a holding ring 61 at each end of the push-pull handle 6, which is convenient for fingers to pass through for pushing and pulling.

[0053] The rotating ring 8 is made of hard metal and is welded to the housing 1. The fixing plate 9 is a metal plate that can increase the force applied to the palm of the hand when manually pulling back the push-pull handle 6 to crush the stone; or the fixing plate 9 and the push-pull handle 6 can be clamped on a mechanical lithotripter to perform mechanical contraction lithotripsy.

[0054] As an optional embodiment, the outer diameters of the drill cap 2 and the tube housing 1 are both less than or equal to 2 mm. Drill caps 2 and tube housings 1 of this size can smoothly pass through the duct of a choledochoscope or pancreatoscope, allowing lithotripsy and stone removal operations under direct vision of the choledochoscope or pancreatoscope, making the operation more precise and safer.

[0055] Method for using the rotatable lithotripsy basket provided by the present invention for use under a cholangiopancreatoscopic approach:

[0056] First, a guide wire is inserted through the papilla under the duodenoscope; then, a choledoscopic instrument is inserted into the bile duct along the guide wire, and the stone 20 is found under direct vision with the choledoscopic instrument; the guide wire is withdrawn, and a rotatable lithotripsy basket specifically for the cholangiopancreatoscope of this embodiment is inserted from the orifice of the choledoscopic instrument; when the basket 3 reaches the vicinity of the stone 20, the push-pull handle 6 is pushed forward to expand the basket 3, and the direction and distance of the basket 3 are adjusted to allow the stone 20 to enter the basket 3; the push-pull handle 6 is pulled back to drive the basket 3 to tighten the stone 20 and close to the tip of the conical drill bit 4. At this time, the basket 3 fixes the stone 20, so the drill bit 4 contacts the stone 20 and the stone 20 does not move; the push-pull handle 6 is continued to be pulled back to allow the tip of the drill bit 4 to penetrate the interior of the stone 20; at the same time, the rotating ring 8 is rotated to drive the drill bit 4 to rotate left and right, thereby causing the stone 20 to be broken. The broken stones 20 are then removed by deploying the basket 3 to trap the broken stones. After the broken stones are firmly trapped, they are withdrawn from the bile duct or pancreatic duct along with the choledochoscope. This procedure is repeated until all stones 20 are broken and removed from the bile duct (the same applies to pancreatic duct stones 20). The entire procedure can be performed under direct visualization with the choledochoscope, saving the operator time and reducing operational risks.

[0057] The present invention provides a rotatable lithotripsy basket specifically designed for use with a biliary and pancreatic ductoscope. The push-pull handle 6 is pushed toward the drill bit 4, causing the traction portion 5, the basket 3, and the drill cap 2 to move synchronously. The basket 3 is in an expanded state, allowing the stone 20 to be collected. After the basket 3 collects the stone 20, the handle is pulled back to drive the basket 3 to tighten the stone 20 and close to the tip of the drill bit 4. The drill bit 4 contacts the stone 20, and the stone 20 does not move. The handle is further pulled back to allow the tip of the drill bit 4 to penetrate the interior of the stone 20. An external drive device drives the tubular housing 1 to rotate the drill bit 4, causing the stone 20 to break. The broken stone 20 is then removed by unfolding the basket 3 to collect the stone. After the stone is tightly collected, it is withdrawn from the bile duct or pancreatic duct along with the biliary scope. This rotatable lithotripsy basket specifically designed for use with a biliary and pancreatic ductoscope effectively improves the efficiency and accuracy of lithotripsy and stone removal, and reduces the harm and risk to the patient.

[0058] In the description of this specification, specific features, structures, or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0059] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A rotatable lithotripsy basket for biliary and pancreatic ductoscopy, characterized in that: It includes a tube shell, a drill cap, a mesh basket, a drill bit, a traction part and a push-pull handle, wherein: One end of the tube shell is connected to an external driving device so that the entire tube shell can rotate under the action of an external force; The push-pull handle is slidably connected to the tube shell, the traction part is located inside the tube shell, and both ends of the traction part are fixedly connected to the push-pull handle and the net basket respectively; The drill bit is fixed to the other end of the tube shell, and the mesh basket passes through the drill bit and is fixedly connected to the drill bit cap; when the push-pull handle reciprocates along the tubular cavity of the tube shell under the action of external force, it can pull the traction part, the mesh basket and the drill bit cap to reciprocate, so that the mesh basket has an expanded state and a collapsed state, wherein, when in the expanded state, the mesh basket can sheath the stone, and when in the collapsed state, the mesh basket can tighten the stone to the drill bit.

2. The rotatable lithotripsy basket for cholangiopancreatography according to claim 1, characterized in that: The drill bit is provided with a thread hole, the thread hole is communicated with the tube cavity of the tube shell, and the mesh basket passes through the corresponding thread hole and is fixedly connected to the drill bit cap.

3. The rotatable lithotripsy basket for cholangiopancreatography according to claim 2, characterized in that: The mesh basket includes two or more mesh wires, the number of the mesh holes is arranged in a one-to-one correspondence with the number of the mesh wires, one end of the mesh wire passes through the corresponding mesh hole and is fixed to the drill cap, and the other ends of all the mesh wires are fixed to the same slider, which is fixedly connected to the traction part; When in the expanded state, a gap is formed between adjacent mesh wires for stones to pass through.

4. The rotatable lithotripsy basket for cholangiopancreatoscopic use according to claim 1 or 2, characterized in that: The drill bit cap is an arc-shaped structure, and the concave side of the arc-shaped structure is fixedly connected to the mesh basket; and when the mesh basket is in the retracted state, the drill bit cap can wrap the drill bit.

5. The rotatable lithotripsy basket for cholangiopancreatography according to claim 2, characterized in that: The drill bit includes a conical head, the tip of the conical head is arranged toward the drill head cap, a groove is arranged on the peripheral wall of the conical head, the side wall of the groove is an inclined surface, and the wire hole is arranged on the inclined surface.

6. The rotatable lithotripsy basket for cholangiopancreatoscopic use according to claim 1, characterized in that: The traction part includes a traction rope, both ends of which are fixedly connected to the net basket and the push-pull handle respectively. The traction rope and the net basket are both made of memory metal material. The traction rope and the tube shell are bendable.

7. The rotatable lithotripsy basket for cholangiopancreatoscopic use according to claim 1, characterized in that: A connecting piece is provided in the tube shell, the connecting piece is slidably connected to the tube shell, the connecting piece is fixedly connected to the traction part, and the connecting piece extends out of the tube shell and is fixedly connected to the push-pull handle.

8. The rotatable lithotripsy basket for cholangiopancreatoscopic use according to claim 1, characterized in that: The rotatable lithotripsy basket further comprises a rotating ring and a fixing plate, wherein: The rotating ring is fixedly connected to the tube shell. The outer diameter of the rotating ring is larger than the outer diameter of the tube shell. The fixing plate is fixed to one end of the rotating ring away from the tube shell for driving connection with an external driving device.

9. The rotatable lithotripsy basket for cholangiopancreatoscopic use according to claim 1, characterized in that: The outer diameters of the drill cap and the tube shell are both less than or equal to 2 mm.

10. The rotatable lithotripsy basket for cholangiopancreatoscopic use according to claim 1, characterized in that: The handle is provided with a grip ring for the user's fingers to pass through.

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