Anti-displacement nasobiliary external drainage tube and insertion device

Abstract

The invention discloses an anti-displacement nasobiliary external drainage tube and an insertion device. The anti-displacement nasobiliary external drainage tube comprises a first straight tube, a first drainage tube section, a second drainage tube section and a second straight tube, wherein the first straight tube, the first drainage tube section, the second drainage tube section and the second straight tube are communicated with each other in turn. The first straight pipe comprises a head end, a first pipe section and a second pipe section, wherein the first straight pipe comprises a lumen which is sequentially communicated with each other; an upper end of the head end is open; the first pipe section includes a plurality of arc-shaped pipe walls uniformly distributed about an axis of thefirst pipe section and protruding away from the axis of the first pipe section; the inner wall of the head end lumen is provided with a wire, and the other end of the wire passes through the straightpipe in turn. The first drainage pipe section, the second drainage pipe section and the second straight pipe lumen pass through the side wall of the tail end of the second straight pipe. The invention adjusts the release size of the arc-shaped tube wall by tightening the thread, and keeps the shape of the whole spherical shape unchanged, increases the pressure of the arc-shaped tube wall on the bile duct wall, and prevents the displacement of the nasobiliary external drainage tube.

Description

technical field [0001] The invention relates to a nasobiliary drainage tube and an insertion device, in particular to an anti-displacement nasal bile external drainage tube and an insertion device. 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, and treat them at the same time, such as duodenal papillitis, papillary sten...

AI Technical Summary

Problems solved by technology

[0004] 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

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