Displacement-proof and easy-to-recover biliary support tube and implantation device

Abstract

The invention discloses an anti-displacement and easy-to-recover biliary support tube and an insertion device. The displacement-proof and easy-to-recover biliary support tube includes a head end, a first tube section, a second tube section and a lumen connected in sequence. The tail end; the upper end of the head end is open; the first pipe section includes a plurality of arc-shaped pipe walls that are evenly distributed with the axis of the first pipe section as the axis and protrude away from the axis of the first pipe section. The lower end of the second pipe section is connected to the upper end of the second pipe section; the side wall of the second pipe section has a drainage hole communicating with the lumen of the second pipe section; the lower end of the second pipe section is provided with an annular metal wire, and the upper end of the annular metal wire passes through the second pipe section. The pipe wall at the lower end of the pipe section has an annular metal wire knot at the lower end. The annular metal wire of the present invention is exposed in the duodenal cavity, and has strong corrosion resistance against intestinal fluid, and the anti-displacement and easy-to-recover biliary inner support tube can be easily taken out from the common bile duct by pulling the annular metal wire.

Description

technical field [0001] The invention relates to a biliary support tube and an insertion device, in particular to a displacement-resistant and easy-to-recover biliary support tube and an insertion device. Background technique [0002] Bile duct stenosis is a common disease in my country, including inflammatory biliary stenosis, iatrogenic biliary stenosis, and tumoral biliary stenosis. The bile excretion above the stenosis is not smooth, which in turn induces complications such as acute cholangitis, obstructive jaundice, liver damage, and chills. , fever, abdominal pain, jaundice and other manifestations, severe cases may even lead to septic shock and liver failure, which is an important disease that endangers human health. Current treatment options for biliary strictures include open cholangioenterostomy, laparoscopic cholangioenterostomy, endoscopic retrograde cholangiopancreatography (ERCP) with resin or metal stent support, percutaneous transhepatic cholangiocentesis (PTC)...

AI Technical Summary

Problems solved by technology

The currently used biliary stent is a resin biliary drainage tube with non-slip flanks at both ends. The above-mentioned drainage tube has the following disadvantages: 1. After the biliary stent head end is inserted into the intrahepatic bile duct, due to the extrusion of the side wall of the bile duct, The flanks are often closed to varying degrees, which leads to a higher probability of drainage tube prolapse; 2. The tail end of the biliary stent is exposed in the duodenum, resulting in damage to the sealing of the biliary tract, and prone to intestinal fluid reflux, causing reflux bile duct inflammation, bacterial displacement and stent blockage; 3. The biliary stent is placed in the common bile duct. Once the stent head is against the bile duct wall, it is difficult to remove the biliary stent; 4. The side wings of the biliary drainage tube are tapered and can be removed during removal Damage the intrahepatic bile duct and duodenal papilla mucosa, causing papillitis, papillary bleeding, and even acute pancreatitis due to papilledema

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