Multi-stage duodenal papilla dilation balloon catheter

Abstract

The invention provides a multi-stage duodenal papilla dilation balloon catheter which comprises a balloon set, a catheter, an injection molding connector and a connecting pipe joint. The balloon set comprises a first balloon, a second balloon and a third balloon; the catheter comprises a first drainage tube section, a second drainage tube section, a third drainage tube section, a fourth drainage tube section and a fifth drainage tube section; a first channel is formed in the first drainage tube section; a second channel and a third channel are arranged in the second drainage tube section; a fourth channel, a fifth channel and a sixth channel are arranged in the third drainage tube section; a seventh channel, an eighth channel, a ninth channel and a tenth channel are arranged in the fourthdrainage tube section; the fifth drainage tube section is an extension tube of the fourth drainage tube section; the connecting pipe joint comprises a first connecting joint, a second connecting joint, a third connecting joint and a fourth connecting joint; and each channel in the fifth drainage tube section is connected with the corresponding joint. The effective dilation range of the nipple sphincter can be enlarged, tearing bleeding of the nipple is avoided, the requirement for pressure is low, and the operation is easy.

Description

technical field [0001] The present invention relates to the field of minimally invasive medical technology and surgical instrument technology, in particular, to a multi-level duodenal papilla expansion balloon catheter, which is used to expand the duodenal papilla sphincter or biliary system stenosis. Minimally invasive surgical instrument under duodenoscope. 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. Endoscopic retrograde cholangiopancreatography (ERCP) is widely used as the first-line method for the treatment of choledocholithiasis due to its advantages of less tr...

AI Technical Summary

Problems solved by technology

[0004] At present, the duodenal milk balloon catheter in clinical application adopts a single-balloon design, which can be divided into two types according to the dilatation diameter. One has a fixed diameter, and the other is a variable-diameter balloon. By increasing the pressure of the balloon, the diameter of the balloon can be increased by 2mm. This kind of balloon has high requirements on the material of the balloon membrane, and the production cost is relatively high.

In addition, when a large balloon is inflated, both ends of the balloon are filled first during the injection of contrast agent, and the middle of the balloon is concave due to the extrusion of the papillary sphincter. As the pressure of the balloon increases, the concave balloon quickly Filling up will lead to tearing of the nipple sphincter, and the tearing speed is faster, prone to nipple bleeding

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