Nasobiliary pancreatic internal and external drainage tube with connecting wire

Abstract

The invention relates to a drainage tube, in particular to a nasobiliary pancreatic internal and external drainage tube with a connecting wire. The drainage tube comprises a nasobiliary external drainage tube, a pancreatic duct internal drainage tube and a connecting wire, wherein the nasobiliary external drainage tube is a single-channel drainage tube, the front end is amoebic spiral, the side wall is provided with a side hole, and the head end is conical; the nasobiliary external drainage tube is a single-channel drainage tube. The internal drainage tube of pancreatic duct is a straight single-channel drainage tube. The tube wall is provided with a side hole, the head end is tapered, and the tail tube wall is provided with a side wing and a groove. The connecting wire passes through theside wall of the tail end of the nasobiliary external drainage tube and passes through the head end of the nasobiliary external drainage tube, and the front end of the connection wire is a movable wire ring, the wire ring is sleeved at the groove, and the tail end of the tension connection wire is tightened to connect the tail part of the pancreatic duct internal drainage tube with the nasobiliaryexternal drainage tube. The invention can firstly carry out pancreatic duct intubation, and the connecting wire in the nasobiliary external drainage tube can fix the pancreatic duct internal drainagetube on the nasobiliary external drainage tube, thereby preventing internal displacement or external displacement of the pancreatic duct internal drainage tube, and after treatment, when the nasobiliary external drainage tube is pulled out, the pancreatic duct internal drainage tube can be pulled out.

Description

technical field [0001] The invention relates to a drainage tube, in particular to a nasobiliary and pancreatic internal and external drainage tube with connecting wires. Background technique [0002] With the continuous development of endoscopic technology and the continuous improvement of its accessories, duodenoscopy (ERCP) has become an important measure for the treatment of hepatobiliary and pancreatic diseases, including common bile duct stones, bile duct injury, bile duct stricture, liver transplantation Biliary complications, etc. Compared with traditional laparotomy, this technique has the advantages of less trauma, high safety factor, and faster recovery. Under direct vision, it can detect hepatobiliary and pancreatic diseases that cannot be detected by conventional liver, gallbladder, spleen and pancreas CT, ultrasound and magnetic resonance examinations, and treat them at the same time, such as duodenal papillitis, papillary stenosis, parapapillary diverticulum, ...

AI Technical Summary

Problems solved by technology

[0006] The pancreatic duct drainage tubes used clinically include straight tubes, single pigtail or double pigtail pancreatic duct drainage tubes, and the above-mentioned drainage tubes have the following disadvantages: 1. Straight pancreatic duct drainage tubes are prone to internal displacement, and the displaced pancreatic duct It is difficult to remove the stent; 2. The drainage tube in the pancreatic duct with a single pigtail is easy to prolapse by itself, and the drainage tube in the pancreatic duct that has protruded early may easily lead to the occurrence or aggravation of pancreatitis

[0007] In recent years, an integrated pancreaticobiliary drainage tube has appeared, with invention patent numbers (ZL 201510242219.7, ZL201510238034.9, ZL201510237352.3, ZL201510236036.4), which reduces the probability of internal displacement of the pancreatic duct and does not require a second endoscopic operation Remove the drainage tube in the pancreatic duct, but in the above invention patent, it is necessary to perform other therapeutic operations such as papillary sphincterotomy, balloon stone removal, basket lithotripsy, etc., and finally perform pancreatic duct and bile duct intubation respectively, under the guidance of a guide wire Insert the drainage tube into the pancreatic duct, or insert the pancreatic duct first, place a guide wire in the pancreatic duct, and place the drainage tube after other operations are completed. Through ERCP practice, the above patents have the following problems: 1. Pancreatic duct catheterization The difficulty is greater than that of bile duct intubation. For patients with difficult intubation, it is necessary to place a drainage tube in the pancreatic duct to occupy the pancreatic duct before bile duct cannulation can be successful, and such patients cannot be placed with the above-mentioned integrated pancreaticobiliary drainage tube; 2. Pancreatic duct Indwelling the guide wire for lithotripsy and stone extraction of the common bile duct increases the difficulty of the above operations, and the guide wire in the pancreatic duct is easy to prolapse from the pancreatic duct; Difficulty of intubation prior to mastectomy

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