Lithotripsy balloon catheter for calculus removal

Abstract

The invention provides a lithotripsy balloon catheter for calculus removal. The device comprises a first pipe section, a second pipe section and a third pipe section which are sequentially communicated, wherein a first lithotripsy electrode and a second lithotripsy electrode are arranged in the first pipe section, a balloon is arranged outside the second pipe section, and a balloon inflation channel is arranged inside the second pipe section; and the third pipe section is provided with a lithotripsy electrode connector, an air bag connector and a water injection connector. According to the invention, small common bile duct calculus can be directly dragged into the duodenum or duodenal papilla balloon dilatation is achieved through the balloon. Plasma, microelectrode and laser lithotripsy can be carried out on large common bile duct calculus under X-ray through the lithotripsy electrode. The device is provided with a flushing channel, normal saline can be injected in the lithotripsy process, the lithotripsy efficiency is improved, and meanwhile broken small calculus can be flushed into the duodenum. The device is low in cost and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of medical instruments for bile duct disease, in particular to a lithotripsy balloon catheter. 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. The current treatment options for choledocholithiasis include open biliary tract exploration, laparoscopic biliary exploration, endoscopic retrograde cholangiopancreatography (ERCP) stone extraction, percutaneous transhepatic bile duct puncture (PTCD) + fistula dilation + percutaneous transhepatic biliary tract Endoscopic (PTCS) stone extraction, duodenal papillar...

AI Technical Summary

Problems solved by technology

The above technical means have the following deficiencies: 1. Before taking out the calculi completely, large incision of the papillary sphincter and expansion of the nipple with a large balloon are used, which is risky, and short-term complications such as nipple hemorrhage, acute pancreatitis, and perforation are prone to occur during the perioperative period, and adverse reactions Flowing cholangitis, early recurrence of stones, and long-term complications such as cholangitis; 2. Huge choledocholithiasis often causes common bile duct obstruction, and due to the narrow space, it is difficult to capture huge choledocholithiasis by placing a gravel basket through ERCP; 3 .Mechanical lithotripsy with mesh basket is inefficient, and some hard cholesterol stones are difficult to be crushed by mesh basket; General anesthesia can choose biliary tract exploration surgery, which has a high risk; 5. SpyGlass lithotripsy under direct vision through ERCP is a new technology recently developed, which has high lithotripsy efficiency and low complications, but SpyGlass equipment and consumables are extremely expensive High, ordinary hospitals have not developed this technology, and ordinary families cannot afford the huge and high treatment costs

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

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