Lithotripsy wire supporting catheter

Abstract

The invention provides a lithotripsy wire supporting catheter. The catheter comprises a first catheter section, a second catheter section and a third catheter section which are sequentially communicated; a lithotripsy wire channel is arranged in the catheter; a balloon is arranged outside the catheter; and a channel for inflating the balloon is arranged inside the catheter. In a working state, thefirst catheter section and the second catheter section enter a human body, and the third catheter section is located outside the human body. The device is placed into a common bile duct through an ERCP clamp channel; small calculi in the common bile duct can be dragged into the duodenum through the common bile duct by crossing the calculi and filling the balloon; when the common bile duct calculus is large, the head end of the implanted catheter is close to the calculus, a lithotripsy wire is implanted through the catheter, the tail end of the wire is connected with a plasma, microelectrode or holmium laser wire, a wire head end electrode is close to the common bile duct calculus for lithotripsy, and after the calculus is broken, the balloon is filled to drag the large calculus into the duodenum. The lithotripsy wire supporting catheter requires low manufacturing cost and is easy to popularize.

Description

technical field [0001] The invention relates to the technical field of medical devices for bile duct disease, in particular to a lithotripsy guide wire support 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. 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 capsule sto...

AI Technical Summary

Problems solved by technology

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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