Nasobiliary-pancreatic internal and external drainage tube and nasobiliary external drainage tube implantation device

Abstract

The invention discloses a nasobiliary-pancreatic internal and external drainage tube and a nasobiliary-pancreatic external drainage tube implantation device. The nasopharyngeal-pancreatic internal and external drainage tube includes a nasobiliary-pancreatic external drainage tube and a pancreatic duct internal drainage tube. The first straight pipe, the first drainage pipe section, the second drainage pipe section and the second straight pipe; the first straight pipe includes the head end, the first pipe section and the second pipe section in which the lumen is connected in turn; the upper end of the head end is open; the first pipe section It includes a plurality of arc-shaped pipe walls that are evenly distributed with the axis of the first pipe section as the axis and protrude away from the axis of the first pipe section. The two ends of the arc-shaped pipe walls are respectively connected to the lower end of the head end and the upper end of the second pipe section; The lumen of the pipe section runs through the upper end and the lower end of the second pipe section and has a diameter larger than the first through hole, and the side wall of the second pipe section has a first drainage hole communicating with the lumen of the second pipe section. The first tube section of the present invention includes a plurality of arc-shaped tube walls, which are spherical as a whole after natural release, and play an anti-displacement role by generating elastic tension on the surrounding bile duct walls.

Description

technical field [0001] The invention relates to an internal and external drainage tube and an insertion device, in particular to an internal and external drainage tube of the nasobiliary and pancreas and an insertion device for the external drainage tube of the nasobiliary. 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, etc. 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,...

AI Technical Summary

Problems solved by technology

[0006] The head end of the nasobiliary drainage tube in clinical application can be entrenched in the bile duct by itself, and the drainage tube has the following disadvantages: 1. The head end of the drainage tube is naturally curved, and the tension force on the wall of the bile duct by the head end of the drainage tube plays an anti-slip effect, but This kind of supporting force is small, and the prolapse of the drainage tube is prone to occur due to the papilla of the duodenum; 2. The stimulation of the head end of the drainage tube to the bile duct mucosa can lead to local mucosal reactive hyperplasia; 3. There are residual small 4. During extubation, the tip of the drainage tube can cause damage to the bile duct and intestinal mucosa, and even induce acute cholangitis, acute pancreatitis, upper gastrointestinal bleeding, etc. Complications; 5. The irritation of the throat by the drainage tube often leads to severe nausea and even vomiting in patients

[0007] The pancreatic duct drainage tubes used clinically include straight tubes, single pigtail or double pigtail pancreatic duct drainage tubes, and the above drainage tubes have the following disadvantages: 1. Straight pancreatic duct drainage tubes are prone to internal displacement, and the displaced pancreatic duct It is more difficult to remove the stent; 2. The drainage tube in the single pigtail pancreatic duct is easy to prolapse by itself, and the drainage tube in the pancreatic duct that prolapses early may easily lead to the occurrence or aggravation of pancreatitis

[0008] 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 in intubation before papillotomy; 4. For patients with intrahepatic bile duct stenosis, it is more difficult for the head of the looped nasobiliary duct to form a loop in the intrahepatic bile duct

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