A kind of anti-reflux biliary drainage tube

Abstract

The invention discloses a reflux-preventing biliary drainage tube. The drainage tube includes a drainage hose, and the drainage hose is divided into an extracorporeal section, a sterile section in the bile duct, and a bacteria-bearing section in the digestive tract. Drainage holes are provided on the pipe wall of the bacterial section, medium diffusion holes are provided on the pipe wall of the bacterial section, and a one-way valve is provided between the sterile section and the bacterial section, and the one-way valve is controlled by the valve. body, a sphere and two elastic cords, wherein, the valve body is tubular, and one end facing the bacterial segment is provided with an inner chamfer, and one end of the two elastic cords is relatively fixed on the valve body facing On the inner wall of one end of the sterile section, the other end is combined and fixed at the same point on the surface of the sphere, and the sphere is always pulled into the inner chamfer to seal one end of the valve body; the inner chamfer is less than or equal to 30 degrees . The drainage tube can effectively prevent gastric juice or other contents from flowing back into the bile duct, and will not block the two-way passage of the guide wire in the drainage tube.

Description

technical field [0001] The invention relates to a human body drainage catheter or a hollow probe, in particular to a reflux prevention biliary drainage tube. Background technique [0002] Patients with bile duct invasion by liver cancer or advanced cholangiocarcinoma are likely to cause common bile duct obstruction, bile cannot be discharged to help digestion, often causing jaundice, indigestion, etc., which requires percutaneous transhepatic puncture for biliary dilatation, dredging and drainage (PTCD), after the operation is completed Most patients need to place a biliary drainage tube. Although the original drainage tube can drain bile, reduce jaundice, and help digestion, the drainage tube connects the bile duct and the stomach as an unobstructed two-way channel. When the bile is drained, the gastrointestinal pressure is greater than or equal to When the biliary tract is under pressure, gastric juice or other contents often flow retrogradely into the biliary tract, causi...

AI Technical Summary

Problems solved by technology

It can be seen that the one-way valve described therein is a valve plate type one-way valve, but this one-way valve structure has the following technical defects: during the operation, the guide wire can only be inserted into the drainage catheter along the direction in which bile flows to the digestive tract, Reverse can not pass

[0012] In short, the one-way valve described in the above utility model cannot meet the two-way passage requirements of the guide wire

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