Drainage stent in pancreatic duct and using method of drainage stent

Abstract

The invention discloses a drainage stent in a pancreatic duct and a using method of the drainage stent. The drainage stent comprises a drainage pipeline and four supporting mechanisms, wherein the drainage pipeline is of a cylindrical tubular structure, the four supporting mechanisms are movably connected to the periphery of the top end of the drainage pipeline in a clamped mode, and the four supporting mechanisms form a group; a plurality of groups of supporting mechanisms are arranged on the drainage pipeline in the extending direction in an equal spacing manner, a supporting connecting rodis arranged between every two adjacent supporting mechanisms, and a connecting supporting rod is arranged between the groups of supporting mechanisms. The drainage pipeline comprises a pipe body, drainage grooves are formed in the side surface of the pipe body, drainage holes are evenly formed in the bottom surfaces of the drainage grooves in an equal spacing manner, and limiting ports are formedin the positions between every two adjacent drainage grooves, of the surface of the outer side of the pipe body in an equal spacing manner. When the drainage stent is used, the drainage stent can be freely bent in the pancreatic duct according to needs, extension in the pancreatic duct is facilitated, besides, the supporting mechanisms can be better matched with the inner wall of the pancreatic duct of a patient, and the diameter can be changed according to needs.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a pancreatic duct drainage stent and a method for using the same. Background technique [0002] Acute and chronic pancreatitis and pancreatic cancer are the three major diseases of the pancreas, and the incidence rates have increased year by year in recent years. Pancreatic diseases are often accompanied by morphological changes such as stenosis, twisting, and expansion of the main and auxiliary pancreatic ducts, resulting in poor drainage of pancreatic juice, abdominal pain, and symptoms such as endocrine and exocrine insufficiency; Accessory pancreatic duct injury. At present, endoscopic placement of plastic pancreatic duct stents is often used for the above patients to unblock the drainage of pancreatic juice and promote the repair of the pancreatic duct. This method has a good therapeutic effect on both benign and malignant strictures of the pancreatic duct. [0003...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing pancreatic duct drainage stent is in use, it is not tightly attached to the inner wall of the pancreatic duct and is prone to loosening, resulting in loose regulations. However, if it is too closely attached to the pancreatic duct, it will easily cause excessive dilation of the pancreatic duct, which cannot be performed well. Change the diameter according to the inner diameter of the pancreatic duct at different positions

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