Lithotripsy Basket Catheter with Stone Removal Balloon

Abstract

The present invention provides a lithotripsy basket catheter with a lithotripsy balloon. The present invention comprises a catheter and a connecting rod type net basket arranged in the catheter. The catheter comprises a first pipe section, a second pipe section and a third pipe section which are connected in sequence, a balloon is arranged outside the second pipe section, and a balloon inflation channel and a net basket connecting rod displacement channel are arranged inside the catheter. After the net basket of the present invention is used to take the stone, the net basket is tightened to fix the stone and make it close to the lithotripsy electrode at the head end of the catheter. After the balloon of the present invention is filled, the stone can be prevented from entering the intrahepatic bile duct during the lithotripsy process; after the common bile duct stone is crushed, the balloon can be used to drag the stone into the common bile duct, or after the common bile duct stone is crushed, the balloon or net basket can be used to drag the stone into the duodenum. By setting the lithotripsy electrode, larger common bile duct stones can be subjected to plasma, microelectrode and laser lithotripsy under X-ray without the assistance of a choledochoscope, and are more suitable for primary hospitals.

Description

Technical Field

[0001] The invention relates to the technical field of bile duct medical devices, and in particular to a lithotripsy basket catheter with a lithotripsy balloon. Background Art

[0002] Common bile duct stones are a common and frequently occurring disease in my country. Stones blocking the common bile duct may induce complications such as acute cholangitis, obstructive jaundice, and acute biliary pancreatitis, with symptoms such as chills, fever, abdominal pain, and jaundice. In severe cases, it may even lead to shock. Long-term stone stimulation may lead to the risk of bile duct cancer, making it an important disease that endangers human health. Treatment options for common bile duct stones include open biliary exploration and stone removal, laparoscopic biliary exploration and stone removal, endoscopic retrograde pancreaticocholangiopancreatography (ERCP) stone removal, percutaneous transhepatic bile duct puncture (PTCD) + fistula dilation + percutaneous transhepatic choledochoscopy (PTCS) stone removal, and duodenal papilla balloon dilatation stone removal via PTCD.

[0003] For patients who are old, have multiple underlying diseases, have cardiopulmonary dysfunction, have a history of upper gastrointestinal surgery, etc. and are not suitable for biliary exploration or ERCP, PTCD via duodenal papilla balloon dilatation or PTCS lithotripsy is often used. For common bile duct stones with a diameter of more than 1.5 cm, this treatment plan has the following shortcomings: 1. Using a balloon with a diameter of more than 1.5 cm for duodenal papillary sphincter balloon dilatation is prone to short-term complications such as papillary laceration and bleeding, acute pancreatitis, and perforation, as well as long-term complications such as reflux cholangitis, stone recurrence, and bile duct cancer; 2. Before PTCS surgery, the fistula needs to be dilated before the choledochoscope can enter the common bile duct. Repeated dilatation of the fistula in one operation is prone to complications such as fistula laceration, bleeding, and liver abscess; multiple operations to dilate the fistula have a lower risk, but the total cost is high, the course of the disease is long, and patients who carry an external bile duct drainage tube for a long time have poor medical compliance and are difficult to care for; 3. PTCS stone removal requires the use of a choledochoscope, and the cost of choledochoscope equipment is relatively high, and general hospitals do not have choledochoscope equipment.

[0004] For patients who are elderly, have multiple underlying diseases, or have cardiopulmonary dysfunction and are not suitable for general anesthesia bile duct exploration surgery, ERCP lithotripsy is often used. First, the papillary sphincterotomy and balloon dilatation are performed, and then the stone is dragged into the common bile duct using a lithotripsy balloon. However, for giant common bile duct stones with a diameter of more than 1.5 cm, ERCP-assisted mechanical lithotripsy with a basket or lithotripsy under direct vision with SpyGlass is used. The above-mentioned technical tips have the following shortcomings: 1. Large papillary sphincterotomy and large balloon papillary dilatation are risky before complete stone removal. Short-term complications such as papillary bleeding, acute pancreatitis, and perforation are prone to occur during the perioperative period, as well as long-term complications such as reflux cholangitis, early recurrence of stones, and cholangitis; 2. Giant common bile duct stones often cause common bile duct obstruction. Due to the narrow space, it is difficult to remove giant common bile duct stones by inserting a lithotripsy basket through ERCP; 3. The efficiency of mechanical lithotripsy with a basket is low, and some of the stones are hard. Cholesterol stones are difficult to be crushed by the basket; 4. If the stones cannot be crushed after being taken out, and if the stones cannot be discharged through the basket, the lithotripsy basket cannot be removed, and general anesthesia biliary exploration surgery is the only option, which is risky; 5. Lithotripsy under direct vision via ERCP with SpyGlass is a new technology that has been recently developed. It has a high lithotripsy efficiency and low complications, but the cost of SpyGlass instruments and consumables is extremely high. Ordinary hospitals have not developed this technology, and ordinary families cannot afford the huge high cost of treatment. Summary of the invention

[0005] In order to solve the above technical problems, a lithotripsy basket catheter with a lithotripsy balloon is provided. The technical means adopted by the present invention are as follows:

[0006] A lithotripsy basket catheter with a stone removal balloon comprises a catheter and a connecting rod type basket arranged in the catheter, wherein the catheter comprises a first pipe section, a second pipe section and a third pipe section which are connected in sequence.

[0007] The front end of the first pipe section is conical and has a curved surface, the head end of the pipe is spherical, and a first lithotripsy electrode, a second lithotripsy electrode and a first channel are arranged inside the pipe section;

[0008] The second tube section is a three-channel tube, with a balloon on the outside, a plurality of basket wire mounting holes on the head end side wall, a metal connecting rod is arranged in the second channel of the three-channel tube opened inside, the head end of the metal connecting rod is connected to each metal wire, the third channel is connected to the first channel, and the fourth channel is connected to the balloon;

[0009] The third pipe section is a three-channel pipe, wherein the fifth channel of the three-channel pipe opened inside the third pipe section is connected to the second channel, the sixth channel is connected to the third channel, and the seventh channel is connected to the fourth channel;

[0010] The second channel and the fifth channel are channels for metal connecting rod displacement, the fourth channel and the seventh channel are balloon inflation channels, the first channel, the third channel and the sixth channel are injection channels, and the first lithotripsy electrode and the second lithotripsy electrode are connected to the lithotripsy electrode connector on the third pipe segment after passing through the second pipe segment;

[0011] In the working state, the first tube segment and the second tube segment enter the human body, and the third tube segment is located outside the human body.

[0012] Furthermore, there are 4 mesh basket wire mounting holes which are evenly distributed on the circumferential tube wall, the head end of the second channel is a blind end, the end of the fifth channel is a blind end, the connecting rod type mesh basket comprises four metal wires, the metal connecting rod and a mesh basket connecting rod connected to the tail end of the metal connecting rod, the tail of the mesh basket connecting rod is connected to a mesh basket handle, the head ends of the four metal wires are connected, and the intersection point is located on the straight line where the radial center of the catheter is located, the diameter of the gravel basket connecting rod is 1 mm, the diameter of the mesh basket connecting rod channel is 1.2 mm, and the maximum diameter of the released mesh basket is 3 cm.

[0013] Furthermore, a basket catheter is provided inside the outer sleeve, a snare connecting rod is provided inside the basket catheter, the basket connecting rod and the body of the snare connecting rod are arranged in the internal channel of the basket catheter, the basket wire mounting holes are 4 and are evenly distributed on the circumferential tube wall, the bottom end of each wire is connected to the head end of the basket connecting rod, the head end of each wire is connected to the snare metal wire, the head end of the snare connecting rod is connected to the snare metal wire, the tail of the basket connecting rod is connected to the basket handle, the head ends of the first lithotripsy electrode and the second lithotripsy electrode are arranged on the first tube The middle section is arranged on the wall side of the second pipe section, the basket catheter is arranged on the central position of the second pipe section, the diameter of the stone crushing wire is 0.2mm, and the cross-sections of the second and third channels are 2.6x2.8mm; the outer diameter of the basket catheter is 2.4x2.6mm, the diameter of the basket metal connecting rod is 0.8mm, the cross-section of the fourth channel is 1.4x2.0mm, the outer diameter of the snare connecting rod is 1.2x1.8mm, the cross-section of the first channel is 1.0x1.4mm, the diameter of the metal connecting rod is 0.8mm, the length of the tapered head end is 3mm, and the maximum diameter of the released basket is 3cm.

[0014] Furthermore, the surface of the first pipe section is coated with a hydrophilic coating.

[0015] Furthermore, the first lithotripsy electrode, the second lithotripsy electrode, the metal connecting rod displacement channel, the injection channel body, and the balloon inflation channel body are parallel to each other and do not contact each other.

[0016] Furthermore, a branch at the bottom end of the sixth channel is connected to the injection joint on the side wall of the third pipe segment, and another branch continues to extend to the end of the third pipe segment to serve as a guide wire channel, and the guide wire channel has a diameter of 1 mm.

[0017] Further, the outer diameter of the catheter comprises 8.5 Fr.

[0018] Furthermore, the total length of the catheter is 40 to 60 cm.

[0019] Furthermore, the total length of the catheter is 2.2 to 2.8 m.

[0020] Furthermore, the outer wall of the third pipe section is also provided with a handle sleeve fixed thereon for easy grasping, and the lithotripsy electrode joint, the airbag joint and the injection joint are all arranged here, and the outer side of the handle sleeve is also provided with left and right handles.

[0021] The present invention has the following advantages:

[0022] 1. The front end of the tube body of the present invention is conical, the head end of the tube body is spherical, and the surface is coated with a hydrophilic coating, which makes it easier to enter the common bile duct through the fistula;

[0023] 2. The metal wires of the basket of the present invention pass through the side wall of the catheter, so that the distance between the gold wires of the basket is constant, which can avoid deformation of the basket and facilitate the collection of stones;

[0024] 3. After the stone is taken out by the basket of the present invention, the basket is tightened to fix the stone and make it close to the lithotripsy electrode at the catheter head end;

[0025] 4. After the balloon of the present invention is filled, the catheter can be placed and the stones collected can be moved left and right in the common bile duct;

[0026] 5. The head end of the present invention is provided with a lithotripsy electrode, which can perform plasma, microelectrode and laser lithotripsy under X-ray for larger common bile duct stones without the assistance of a choledochoscope, and is more suitable for primary hospitals;

[0027] 6. The lithotripsy electrode of the present invention is located in the center of the catheter, lithotripsy basket and balloon. After the stone is removed and the balloon is filled, the electrode can be kept away from the bile duct wall to prevent the electrode from damaging the bile duct wall during the lithotripsy process;

[0028] 7. After the balloon of the present invention is filled, it can prevent the stones from entering the intrahepatic bile duct during the lithotripsy process;

[0029] 8. After the common bile duct stones are crushed, the present invention can use a balloon to drag the crushed stones into the common bile duct, or after the common bile duct stones are crushed, the balloon or the basket can be used to drag the crushed stones into the duodenum.

[0030] 9. The present invention controls the opening or closing of the cup-shaped basket by a snare. The basket is cup-shaped and is easy to trap common bile duct stones. After the basket of the present invention traps the stones, tightening the snare can close the basket to prevent the stones from falling out of the basket. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a cross-sectional view of the first pipe segment (a), the second pipe segment (b), and the third pipe segment (c) of the first scheme of the embodiment of the present invention, and (d) is a cross-sectional view of the front view of the first pipe segment.

[0034] Figure 3 It is a schematic diagram of the structure of the basket and balloon in the expanded state of the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of the cup-shaped basket and balloon in the expanded state of the present invention.

[0036] Figure 5 It is a schematic diagram of the structure of the cup-shaped basket and balloon after stone removal according to the present invention.

[0037] Figure 6 (a) to (d) are the lithotripsy process after PTCD surgery in Example 1 of the present invention.

[0038] Figure 7 (a) to (e) are the retrograde lithotripsy process in Example 2 of the present invention.

[0039] In the figure: 1, first tube section; 11, first lithotripsy electrode; 12, second lithotripsy electrode; 13, first channel; 14, metal wire; 2, second tube section; 21, balloon; 22, second channel; 23, third channel; 24, fourth channel; 3, third tube section; 31, fifth channel; 32, sixth channel; 33, seventh channel; 34, balloon joint; 35, lithotripsy electrode joint; 36, injection joint; 37, guide wire channel; 38, handle sleeve; 39, handle; 310, basket connecting rod; 311, basket handle; 41, snare connecting rod; 42, snare propulsion end; 43, snare metal wire. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 , Figure 2 As shown in (a) to (d), this embodiment discloses a lithotripsy basket catheter with a stone removal balloon, comprising a catheter and a connecting rod type basket arranged in the catheter, wherein the catheter comprises a first tube section, a second tube section and a third tube section which are connected in sequence,

[0042] The front end of the first pipe section 1 is conical and has a curved surface, and the head end of the pipe section is spherical, and a first lithotripsy electrode 11, a second lithotripsy electrode 12 and a first channel 13 are arranged inside the first pipe section 1;

[0043] The second tube section 2 is a three-channel tube, with a balloon 21 on the outside, a plurality of basket wire mounting holes on the side wall of the head end, a metal connecting rod in the second channel 22 of the three-channel tube opened inside, the head end of the metal connecting rod is connected to each metal wire, the third channel 23 is connected to the first channel, and the fourth channel 24 is connected to the balloon; the diameter of the balloon is 1.5-2.0cm when it is close to the wall of the first tube section, the diameter after inflation is 2.5cm-3.0cm, and the length of the balloon is 1-3cm. The diameter of the balloon channel is 0.3mm, the length of the conical head end is 3mm, the distance between the balloon and the catheter head end is 0.5mm, the balloon is made of rubber, and the catheter is made of polyethylene.

[0044] The third pipe section 3 is a three-channel pipe, wherein the fifth channel 31 of the three-channel pipe opened inside the third pipe section 3 is connected to the second channel 22, the sixth channel 32 is connected to the third channel 23, and the seventh channel 33 is connected to the fourth channel 24;

[0045] The second channel and the fifth channel are channels for metal connecting rod displacement, the fourth channel and the seventh channel are balloon inflation channels, the first channel, the third channel and the sixth channel are injection channels, and the first lithotripsy electrode and the second lithotripsy electrode are connected to the lithotripsy electrode connector on the third pipe segment after passing through the second pipe segment;

[0046] In the working state, the first tube segment and the second tube segment enter the human body, and the third tube segment is located outside the human body.

[0047] The surface of the first pipe section is coated with a hydrophilic coating.

[0048] As the first preferred technical solution, Figure 3As shown, the basket wire mounting holes are 4 and evenly distributed on the circumferential tube wall, the head end of the second channel is a blind end, the end of the fifth channel is a blind end, the connecting rod type basket includes four metal wires 14, the metal connecting rod and the basket connecting rod 310 connected to the tail end of the metal connecting rod, the tail of the basket connecting rod is connected to the basket handle 311, the head ends of the four metal wires are connected, and the intersection is located on the straight line where the radial center of the catheter is located. The diameter of the gravel basket connecting rod is 1mm, the diameter of the basket connecting rod channel is 1.2mm, and the maximum diameter of the released basket is 3cm.

[0049] As a second preferred technical solution, the basket is cup-shaped after expansion, specifically, Figure 4 , Figure 5 As shown, a basket catheter is provided inside the outer sleeve, a snare connecting rod 41 is provided inside the basket catheter, the basket connecting rod and the body of the snare connecting rod are arranged in the internal channel of the basket catheter, the basket wire mounting holes are 4 and are evenly distributed on the circumferential tube wall, the bottom end of each wire is connected to the head end of the basket connecting rod, the head end of each wire is connected to the snare wire, the head end of the snare connecting rod is connected to the snare wire 43, the tail of the basket connecting rod is connected to the basket handle, and the propulsion end 42 of the snare connecting rod is arranged on the third pipe section. The head ends of the first and second lithotripsy electrodes are arranged at the central position of the first pipe segment, the middle section is arranged on the wall side of the second pipe segment, the basket catheter is arranged at the central position of the second pipe segment, the diameter of the lithotripsy wire is 0.2mm, and the cross-sections of the second and third channels are 2.6x2.8mm; the outer diameter of the basket catheter is 2.4x2.6mm, the diameter of the basket metal connecting rod is 0.8mm, the cross-section of the fourth channel is 1.4x2.0mm, the outer diameter of the snare connecting rod is 1.2x1.8mm, the cross-section of the first channel is 1.0x1.4mm, the diameter of the metal connecting rod is 0.8mm, the length of the tapered head end is 3mm, and the maximum diameter of the released basket is 3cm.

[0050] The first lithotripsy electrode, the second lithotripsy electrode, the metal connecting rod displacement channel, the injection channel main body, and the balloon inflation channel main body are parallel to each other and do not contact each other.

[0051] A branch at the bottom end of the sixth channel is connected to the injection joint on the side wall of the third pipe segment, and another branch continues to extend to the end of the third pipe segment to serve as a guide wire channel with a diameter of 1 mm.

[0052] The outer diameter of the catheter includes 8.5Fr.

[0053] The outer wall of the third pipe section is also provided with a handle sleeve 8 fixed thereon for easy grasping, where the lithotripsy electrode joint 35, the airbag joint 34 and the injection joint 36 are all arranged, and left and right handles 39 are also provided on the outside of the handle sleeve.

[0054] Example 1

[0055] In this embodiment, the basket configuration of Scheme 1 is selected, and the total length of the catheter is 40 to 60 cm.

[0056] PTCD was performed first to drain bile to control biliary infection and jaundice, and the PTCD tube was left in place for 2 months.

[0057] A zebra guidewire was inserted through the original PTCD tube, and the guidewire passed over the stone and entered the distal duodenum through the duodenal papilla.

[0058] The guide wire is left in place and the original PTCD tube is removed, and a duodenal papilla balloon dilatation catheter is inserted through the guide wire to dilate the duodenal papilla.

[0059] Leave the guide wire in place and withdraw the duodenal papilla balloon dilatation catheter, insert the guide wire through the tip of the lithotripsy basket catheter, and under the guidance of the guide wire, send the lithotripsy basket catheter into the common bile duct, withdraw the guide wire, release the basket, and remove the common bile duct stones.

[0060] like Figure 6 As shown in (a) to (d), the basket is tightened and the common bile duct stones are fixed. Contrast agent is injected through the balloon connector to fill the balloon. Normal saline is rapidly dripped through the contrast agent injection connector. Plasma, microelectrode or laser lithotripsy is performed. During the lithotripsy process, the basket is continuously tightened to gradually break up the common bile duct stones. Some of the broken stones are discharged into the duodenum through the dilated duodenal papilla.

[0061] Contrast is injected through the contrast agent injection connector to understand the residual stone situation. After confirming that there are large stones remaining in the common bile duct, a zebra guidewire is inserted through the lithotripsy basket catheter, and the tip of the guidewire enters the duodenum.

[0062] Tighten the basket, draw out the contrast agent in the balloon, inject air through the balloon connector, push the filled balloon into the duodenum, and push the lithotripsy into the duodenum.

[0063] Finally, contrast is injected again through the contrast agent injection connector. After confirming that there are no stones remaining, the lithotripsy basket catheter can be withdrawn.

[0064] Example 2

[0065] In this embodiment, the basket configuration of Scheme 1 is selected, and the total length of the catheter is 2.2 to 2.8 meters.

[0066] like Figure 7 As shown in (a) to (e), after the duodenoscope is placed orally and the bile duct is cannulated successfully, endoscopic retrograde cholangiography is performed to determine the number, location, and size of stones, and then a small sphincter incision is performed, and a cylindrical balloon with a diameter of 1.0 cm is used to dilate the duodenal papilla.

[0067] Under the guidance of the guidewire, the basket catheter is inserted through the duodenal forceps channel, the balloon is filled or the basket is released to collect smaller stones in the common bile duct and directly dragged into the duodenum. When the stone diameter exceeds 1 cm, the basket catheter is released to collect the stone. When the basket is tightened, the stone is close to the electrode at the catheter head. The balloon is filled to fix the catheter, and plasma, microelectrode or laser lithotripsy is performed to break up large stones in the common bile duct.

[0068] After the stone is broken, the basket is released to collect large pieces of stone and drag them into the duodenum, and the balloon is inflated to drag smaller pieces of stone into the duodenum.

[0069] Example 3

[0070] In this embodiment, the basket configuration of Scheme 2 is selected, and the total length of the catheter is 40 to 60 cm.

[0071] PTCD was performed first to drain bile to control biliary infection and jaundice, and the PTCD tube was left in place for 2 months.

[0072] A cup-shaped lithotripsy basket catheter is inserted through the PTCD fistula and sent into the common bile duct. The basket catheter is pushed forward to release the basket.

[0073] Push the snare rod forward, the head end of the basket opens, and the basket becomes cup-shaped.

[0074] The outer cannula is pushed forward and the common bile duct stones enter the basket.

[0075] Pull back on the snare to tighten the cup.

[0076] Pull back the lithotripsy basket catheter, the basket is tightened, and the stone is fixed to the tip of the outer sleeve.

[0077] Inflate the balloon and secure the lithotripsy catheter.

[0078] Plasma, microelectrode or laser lithotripsy is performed. During the lithotripsy process, the basket is continuously tightened to gradually break up the common bile duct stones.

[0079] The basket is tightened and the lithotripsy is pushed into the duodenum using a filled balloon.

[0080] Example 4

[0081] In this embodiment, the basket configuration of Scheme 2 is selected, and the total length of the catheter is 2.2 to 2.8 meters.

[0082] After the duodenoscope was inserted orally and the bile duct was cannulated successfully, endoscopic retrograde cholangiography was performed first to determine the number, location and size of the stones, and then a small sphincter incision was made, and a cylindrical balloon with a diameter of 1.0 cm was used to dilate the duodenal papilla.

[0083] The basket catheter is inserted through the duodenoscope channel, and the basket catheter enters the common bile duct through the duodenal papilla. The basket catheter is pushed forward to release the basket.

[0084] Push the snare rod forward, the head end of the basket opens, and the basket becomes cup-shaped.

[0085] The outer cannula is pushed forward and the common bile duct stones enter the basket.

[0086] Pull back on the snare to tighten the cup.

[0087] Pull back the lithotripsy basket catheter, the basket is tightened, and the stone is fixed to the tip of the outer sleeve.

[0088] Plasma, microelectrode or laser lithotripsy is performed. During the lithotripsy process, the basket is continuously tightened to gradually break up the common bile duct stones.

[0089] Push the basket catheter and the snare rod forward again to release the basket into a cup shape. Pull back the snare to tighten the cup. Pull back the lithotripsy basket catheter, the basket tightens, and the larger pieces of lithotripsy are fixed to the tip of the outer sleeve. Pull back the basket catheter to drag the lithotripsy into the duodenum.

[0090] For smaller common bile duct stones or lithotripsy, tighten the basket, inflate the balloon, and use the balloon to pull the smaller residual stones into the duodenum.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lithotripsy basket catheter with a lithotripsy balloon, characterized in that: It comprises a catheter and a connecting rod basket arranged in the catheter, wherein the catheter comprises a first pipe section, a second pipe section and a third pipe section which are connected in sequence, the front end of the first pipe section is conical and has an arc surface, the head end of the pipe section is spherical, and a first lithotripsy electrode, a second lithotripsy electrode and a first channel are arranged inside the first pipe section; The second tube section is a three-channel tube, with a balloon on the outside, a plurality of basket wire mounting holes on the head end side wall, a metal connecting rod is arranged in the second channel of the three-channel tube opened inside, the head end of the metal connecting rod is connected to each metal wire, the third channel is connected to the first channel, and the fourth channel is connected to the balloon; The lithotripsy electrode is located in the center of the catheter, lithotripsy basket and balloon. After the stone is removed and the balloon is filled, the electrode is away from the bile duct wall to prevent the electrode from damaging the bile duct wall during the lithotripsy process. After the balloon is inflated, it is prevented that the stones enter the intrahepatic bile duct during the lithotripsy process; Using the balloon to drag the lithotripsy into the common bile duct; After crushing the common bile duct stones, the balloon or basket is used to drag the stones into the duodenum; The connecting rod type basket controls the opening or closing of the cup-shaped basket through the snare. The basket is in the shape of a cup mouth and is used to snare the common bile duct stones. After the stones are snared, the snare is tightened to close the basket to prevent the stones from falling out of the basket. The third pipe section is a three-channel pipe, wherein the fifth channel of the three-channel pipe opened inside the third pipe section is connected to the second channel, the sixth channel is connected to the third channel, and the seventh channel is connected to the fourth channel; The second channel and the fifth channel are channels for metal connecting rod displacement, the fourth channel and the seventh channel are balloon inflation channels, the first channel, the third channel and the sixth channel are injection channels, and the first lithotripsy electrode and the second lithotripsy electrode are connected to the lithotripsy electrode connector on the third pipe segment after passing through the second pipe segment; In the working state, the first pipe section and the second pipe section enter the human body, and the third pipe section is located outside the human body; The number of the basket wire installation holes is 4 and they are evenly distributed on the circumferential tube wall. The head end of the second channel is a blind end, and the tail end of the fifth channel is a blind end. The connecting rod type basket comprises four metal wires, the metal connecting rod and a basket connecting rod connected to the tail end of the metal connecting rod. The tail end of the basket connecting rod is connected to a basket handle. The head ends of the four metal wires are connected, and the intersection is located on the straight line where the radial center of the catheter is located. A basket catheter is provided inside the outer sleeve, a snare connecting rod is provided inside the basket catheter, the basket connecting rod and the body of the snare connecting rod are arranged in the internal channel of the basket catheter, the basket wire mounting holes are 4 and are evenly distributed on the circumferential tube wall, the bottom end of each wire is connected to the head end of the basket connecting rod, the head end of each wire is connected to the snare metal wire, the head end of the snare connecting rod is connected to the snare metal wire, the tail of the basket connecting rod is connected to the basket handle, the head ends of the first lithotripsy electrode and the second lithotripsy electrode are arranged at the central position of the first tube segment, the middle section is arranged on the tube wall side of the second tube segment, and the basket catheter is arranged at the central position of the second tube segment.

2. The lithotripsy basket catheter with a lithotripsy balloon according to claim 1, characterized in that: The diameter of the gravel basket connecting rod is 1mm, the diameter of the basket connecting rod channel is 1.2mm, and the maximum diameter of the released basket is 3cm.

3. The lithotripsy basket catheter with a lithotripsy balloon according to claim 1, characterized in that: The diameter of the lithotripsy wire is 0.2mm, and the cross-sections of the second and third channels are 2.6x2.8mm; the outer diameter of the basket catheter is 2.4x2.6mm, the diameter of the basket metal connecting rod is 0.8mm, the cross-section of the fourth channel is 1.4x2.0mm, the outer diameter of the snare connecting rod is 1.2x1.8mm, the cross-section of the first channel is 1.0x1.4mm, the diameter of the metal connecting rod is 0.8mm, the length of the conical head end is 3mm, and the maximum diameter of the released basket is 3cm.

4. The lithotripsy basket catheter with a lithotripsy balloon according to claim 2 or 3, characterized in that: The surface of the first pipe section is coated with a hydrophilic coating.

5. The lithotripsy basket catheter with a lithotripsy balloon according to claim 2 or 3, characterized in that: The first lithotripsy electrode, the second lithotripsy electrode, the metal connecting rod displacement channel, the injection channel main body, and the balloon inflation channel main body are parallel to each other and do not contact each other.

6. The lithotripsy basket catheter with a lithotripsy balloon according to claim 1 or 2, characterized in that: A branch at the bottom end of the sixth channel is connected to the injection joint on the side wall of the third pipe segment, and another branch continues to extend to the end of the third pipe segment to serve as a guide wire channel with a diameter of 1 mm.

7. The lithotripsy basket catheter with a lithotripsy balloon according to any one of claims 1 to 3, characterized in that: The outer diameter of the catheter includes 8.5Fr.

8. The lithotripsy basket catheter with a lithotripsy balloon according to any one of claims 1 to 3, characterized in that: The total length of the catheter is 40 to 60 cm.

9. The lithotripsy basket catheter with a lithotripsy balloon according to any one of claims 1 to 3, characterized in that: The total length of the catheter is 2.2 to 2.8 meters.

10. The lithotripsy basket catheter with a lithotripsy balloon according to any one of claims 1 to 3, characterized in that: The outer wall of the third pipe section is also provided with a handle sleeve fixed thereon for easy grasping, on which the lithotripsy electrode joint, the airbag joint and the injection joint are all arranged, and left and right handles are also arranged on the outside of the handle sleeve.

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