Biliary tract exploration method and device based on superfine endoscope

Abstract

The invention provides a biliary tract exploration method and device based on a superfine endoscope. The biliary tract exploration method is characterized by comprising the following steps that a conical guide head is fixedly connected, and the superfine endoscope is mounted in an inserted mode; the superfine endoscope is put into the duodenum descending part; the conical guide head is fixed to the open position of duodenal papilla; a guide wire is inserted, and the superfine endoscope is brought into the common bile duct and the common hepatic duct by the guide wire; an annular surrounding saccule is opened through inflation, and an outer sleeve is fixed; the guide wire and the superfine endoscope are taken out and the outer sleeve is dwelled to form a stable biliary tract exploration channel. The biliary tract exploration device comprises the guide wire, a duodenoscope and the superfine endoscope and is characterized by further comprising the conical guide head, wherein the conical guide head is arranged at the front end of the superfine endoscope and is fixedly connected with the superfine endoscope, the annular surrounding saccule and a traction wire are arranged at the front portion of the outer sleeve, the superfine endoscope and the guide wire are inserted into the outer sleeve and enter the common bile duct, and the annular surrounding saccule is opened through inflation to fix the outer sleeve so as to form the biliary tract exploration channel.

Description

technical field [0001] The invention relates to a diagnosis and treatment method and a medical device, and is a biliary tract exploration method and a device thereof based on an ultrafine endoscope. Background technique [0002] At present, POC-peroral cholangioscopy can be divided into three categories: ①Peroral cholangioscopy. ② spyglass choledochoscopy. ③ ultra-fine endoscopy. Compared with the above two kinds of choledochoscope and traditional angiography, the ultra-fine endoscope entering the biliary tract has the following advantages: 1. In terms of diagnosis: large field of view, clear images, water injection and air injection, easy to observe; 2. In terms of treatment: high-definition Directly looking at laser lithotripsy, early biliary tract lesions can be treated endoscopically, and common bile duct tumors can be clearly observed and biopsied, guiding the guide wire through the narrow biliary tract, and assisting in the placement of biliary stents; 3. The equipme...

AI Technical Summary

Problems solved by technology

According to literature search, domestic and foreign scholars in the prior art use ultra-fine endoscopes to enter the common bile duct. There are mainly the following methods: 1. Guide wire guidance—Gastrointest Endosc.2006 May; Endoscopic retrograde cholangiopancreatography (encoscopicretrograde cholangio-pancreatography, ERCP) was performed with papillary sphincterotomy or columnar balloon dilatation, and the duodenoscope was withdrawn after dilation to 10-12 mm. Duodenoscope retains the guide wire, and under the guidance of X-rays, inserts an ultra-fine endoscope along the guide wire and enters the common bile duct through the duodenal papilla. In this technique, the disadvantage of guide wire displacement is common

2. Anchoring balloon guidance—Gastrointest Endosc.2009 Aug;70(2):297-302, insert a guide wire or a 5 Fr detachable balloon catheter into the intrahepatic bile duct or In the upstream of the stenosis, inflate the balloon to anchor the balloon above the intrahepatic bile duct or the stenosis, then separate the handle at the proximal end of the balloon catheter from the catheter and properly block the catheter to prevent balloon leakage, exit ten Duodenoscope and guide wire, and then insert the endoscope into the bile duct along the balloon catheter in a "J" shape. During the intervention, the balloon needs to be withdrawn from the working channel, which will cause the position of the endoscope in the bile duct to be incorrect. Stable. In addition, anchoring the balloon in the bile duct is difficult in some cases, especially in those with bile duct stricture or marked dilation of the common bile duct; this method has been discontinued due to complications of air embolism and biliary rupture ;3. Outer cannula assistance—Endoscopy.2012 Nov.44(11):1037-44, a side hole is opened at a distance of 65-75 cm from the distal end of the outer cannula to allow the endoscope to pass through, and the endoscope is inserted into the overcoat through the side hole Insert the tube together with the outer cannula into the duodenal bulb. After inflating and anchoring the outer cannula balloon, the gastroscope is withdrawn, and the ultra-fine endoscope is inserted into the duodenum with sphincterotomy or balloon expansion The main nipple. However, compared with ultra-thin endoscopes, the available overtubes are very large, and it is difficult to operate through the overtubes

The repeatability of this operation method needs to be further verified, and it is difficult to continue to explore the microscope

[0005] In summary, the above operation methods have their own advantages and disadvantages, and cannot make the operation simple and stable, and meet the needs of repeated access to the biliary tract for diagnosis and treatment.

Images