External drainage tube of hilar stent

Abstract

The invention discloses an external drainage tube of a hilar stent, which comprises a main stent tube. The upper end of the main stent tube is forked to form a left stent tube and a right stent tube, an included angle alpha between the main stent tube and the left stent tube is 135 degrees, an included angle beta between the main stent tube and the right stent tube ranges from 90 degrees to 150 degrees, the lower end of the main stent tube is expanded, and a drainage adjusting hole with the diameter of 2mm is arranged at a forked position of the left stent tube and the right stent tube. A plurality of drainage holes with the diameters of 1mm are arranged at crossed regions among the main stent tube, the left stent tube and the right stent tube. The length of the main stent tube ranges from 70cm to 80cm while the tube diameter of the main stent tube ranges from 5.3mm to 4mm, the lengths of the left stent tube and the right stent tube are 6cm, the tube diameters of the left stent tube and the right stent tube are gradually reduced from the forked ends to the tail ends, the tube diameters of the forked ends are identical to the tube diameter of the main stent tube, and the tube diameters of the tail ends are 50% to 65% of those of the forked ends. The external drainage tube of the hilar stent is reasonable in structure, meets requirements of a hilar structure, is placed conveniently, has high clinical practicality, and effectively resolves difficult problems that in the prior art, anastomotic stoma is easy to leak and is narrow and twice or multiple times of surgeries are required, and accordingly sufferings of patients are reduced.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an external drainage tube for a hilar stent. Background technique [0002] After tumor resection for patients with hilar tumors, the hilar bile ducts need to be formed. If the left and right hepatic ducts are thin, bile leakage and anastomotic stenosis are likely to occur, and two or more operations are required, which will cause serious harm to the patient. serious injury. In addition, with the widespread use of laparoscopic surgery in clinical practice, hilar bile duct injury also occurs from time to time, especially when the common hepatic duct is thin. When the hilar bile duct is severely damaged, biliary-jejunostomy is required. The common duct is thin, and bile leakage and anastomotic stenosis are also prone to occur after biliary-enteric anastomosis. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides ...

AI Technical Summary

Problems solved by technology

[0002] After tumor resection for patients with hilar tumors, the hilar bile ducts need to be formed. If the left and right hepatic ducts are thin, bile leakage and anastomotic stenosis are likely to occur, and two or more operations are required, which will cause serious harm to the patient. serious injury

In addition, with the widespread use of laparoscopic surgery in clinical practice, hilar bile duct injury also occurs from time to time, especially when the common hepatic duct is thin. When the hilar bile duct is severely damaged, biliary-jejunostomy is required. The common duct is thin, and bile leakage and anastomotic stenosis are prone to occur after biliary-enteric anastomosis

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