Lithotripsy basket catheter with lithotripsy balloon

Abstract

The invention provides a lithotripsy basket catheter with a lithotripsy balloon. The lithotripsy basket catheter comprises a catheter e and a connecting rod type basket arranged in the catheter. The catheter comprises a first catheter section, a second catheter section and a third catheter section which are sequentially communicated; a balloon is arranged outside the second catheter section; and aballoon inflation channel and a basket connecting rod channel for displacement are arranged in the catheter. After calculi are taken by the basket, the basket is tightened, and the calculi can be fixed and tightly attached to the lithotripsy electrode at the head end of the catheter. After the balloon is filled, broken calculi can be prevented from entering an intrahepatic bile duct in the calculi breaking process. After the common bile duct calculi are crushed, the broken calculi can be dragged into the common bile duct by using the balloon, or after the common bile duct calculi are crushed,the broken calculi are dragged into the duodenum by using the balloon or the basket. By arranging the lithotripsy electrode, large common bile duct calculi can be subjected to plasma lithotripsy, microelectrode lithotripsy and laser lithotripsy under X-ray, choledochoscope assistance is not needed, and the lithotripsy basket catheter is more suitable for primary hospitals.

Description

technical field [0001] The invention relates to the technical field of bile duct medical devices, in particular to a lithotripsy basket catheter with a stone retrieval balloon. Background technique [0002] Choledocholithiasis is a common and frequently-occurring disease in my country. Blockage of the common bile duct by stones can induce complications such as acute cholangitis, obstructive jaundice, and acute biliary pancreatitis. Symptoms include chills, fever, abdominal pain, and jaundice. Cause shock, long-term calculus stimulation has the risk of cholangiocarcinoma, which is an important disease that endangers human health. Treatment options for common bile duct stones include open biliary tract exploration, laparoscopic biliary exploration, endoscopic retrograde cholangiopancreatography (ERCP), percutaneous transhepatic bile duct puncture (PTCD) + fistula expansion + percutaneous transhepatic Tractoscopy (PTCS) stone extraction, duodenal papillary balloon dilation caps...

AI Technical Summary

Problems solved by technology

The diameter of choledocholithiasis is more than 1.5cm. This treatment has the following disadvantages: 1. Using a balloon with a diameter of more than 1.5cm to dilate the duodenal papillary sphincter is prone to papillary tear bleeding, acute pancreatitis, perforation, etc. Short-term complications, as well as long-term complications such as reflux cholangitis, recurrence of stones, and cholangiocarcinoma; 2. Before PTCS, the fistula tract needs to be dilated before choledochoscopy can enter the common bile duct. Repeated dilation of the fistula tract in one operation is prone to fistula tract tear, hemorrhage, liver abscess and other complications; multiple operations to dilate the fistula tract are less risky, but the total cost is high, the course of disease is longer, and patients who carry external biliary drainage tubes for a long time have poor medical compliance and difficult nursing; 3. Biliary endoscopy is required for PTCS removal of stones, and the cost of choledochoscopy equipment is relatively high, and general hospitals do not have choledochoscopy equipment

The head end of the above-mentioned technique has the following disadvantages: 1. Before the stone is completely removed, the risk of large papillary sphincter incision and large balloon papillary expansion is relatively high, and short-term complications such as nipple hemorrhage, acute pancreatitis, and perforation are prone to occur during the perioperative period. And long-term complications such as reflux cholangitis, early recurrence of stones, and cholangitis; 2. Huge common bile duct stones often cause common bile duct obstruction. Due to the narrow space, it is difficult to remove huge common bile duct stones by placing a stone basket through ERCP ;3. The efficiency of mechanical stone crushing with mesh basket is low, and some hard cholesterol stones are difficult to be crushed by the mesh basket; , can only choose general anesthesia for biliary tract exploration surgery, which is risky; 5. The placement of SpyGlass lithotripsy under direct vision through ERCP is a new technology developed recently. The cost is extremely high, ordinary hospitals have not carried out this technology, and ordinary families cannot afford the huge and high treatment costs

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