Biliary tract drainage stent with grooves in surface

Abstract

The invention discloses a biliary tract drainage stent with grooves on the surface, which comprises a drainage tube, a front positioning claw and a rear positioning claw, the drainage tube is a hollow tube extending along the long axis direction; the front positioning claw is fixed at a position close to the front end of the drainage tube, the rear positioning claw is fixed at a position close to the rear end of the drainage tube; a plurality of grooves extending in the long axis direction are formed in the peripheral wall of the middle portion of the drainage tube, and the middle portion of the drainage tube is located between the front positioning claw and the rear positioning claw. According to the biliary tract drainage stent, the plurality of grooves are formed in the peripheral wall of the drainage tube, the drainage effect is improved through the grooves, meanwhile, friction between the drainage tube and the inner wall of the biliary tract is increased, displacement of the biliary tract drainage stent at the biliary tract lesion obstruction position can be prevented, and medical risks can be reduced.

Description

Technical field[0001]The present invention relates to a biliary drainage bracket having a groove having a groove, belonging to the technical field of medical devices.Background technique[0002]At present, the basic main treatment for biliary malignant tumors is to ensure the smoothness of the biliary system in the position of the biliary system to ensure the normal operation of the biliary system. However, clinically used biliary plastic brackets, after placing a biliary obstruction site, due to intestinal and biliary smooth muscle shrinkage caused intestinal and biliary physiological peristalsis, it is easy to cause the upper and lower displacement of the biliary plastic bracket. And if the bracket is aging or losing its efficacy, minimally invasive surgery takes out the biliary plastic bracket, which not only increases pain, but also increases the risk of infection. Therefore, how to prevent the biliary plastic bracket from moving up and down in the biliary obstruction site, and ca...

AI Technical Summary

Problems solved by technology

However, the plastic biliary stent commonly used clinically, after being placed in the obstructed part of the biliary tract, the contraction of the smooth muscle of the intestinal tract and biliary tract will cause the physiological peristalsis of the intestinal tract and biliary tract, making it easy to cause the plastic biliary stent to move up and down.

And if the stent ages or loses its efficacy, minimally invasive surgery is performed again to remove the biliary plastic stent, which not only increases the pain for the patient, but also increases the risk of infection

Images