Pancreatic juice inner drainage tube and drainage tool

Abstract

The invention discloses a pancreatic juice inner drainage tube. The pancreatic juice inner drainage tube comprises a drainage tube body, a tube and a drainage tube tail part, wherein the upper end of the drainage tube body is provided with the tube cap, the lower end of the drainage tube body is provided with the drainage tube tail part, and the lower side wall of the drainage tube body is provided with a shape memory alloy ring. The invention also discloses a drainage tool of the pancreatic juice inner drainage tube. The drainage tool comprises a pancreatic juice inner drainage tube and a tool for pushing the pancreatic juice inner drainage tube. The lower side wall of the drainage tube body is provided with the shape memory alloy ring, so that the problem that the pancreatic juice inner drainage tube is insufficient in supporting force can be solved, in the process for pushing the drainage tube to an operating position, the shape memory alloy ring is always an elliptical ring, the pushing resistance is relatively small, when the drainage tube is pushed to the operation position, the shape memory alloy ring is a circular ring, the diameter of the circular ring is greater than the diameter of a sphincter opening of duodenal papilla, and an effect for preventing the pancreatic juice from moving in the pancreatic juice inner drainage tube can be achieved.

Description

technical field [0001] The invention relates to a pancreatic juice internal drainage tube, in particular to a pancreatic juice internal drainage tube and a drainage tool. 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 stenosis, parapapillary diverti...

AI Technical Summary

Problems solved by technology

[0004] In order to prevent acute and chronic pancreatitis caused by blockage of the internal pancreatic juice drainage tube, the currently used pancreatic juice internal drainage tube usually needs to be removed after surgery or 1 to 2 weeks after the pancreatitis is cured. The method of removal is to perform the second ERCP operation , thus increasing the risk of surgery, treatment costs and patient suffering

In addition, during the use of the drainage tube, there is a risk of internal displacement due to insufficient support force and entering the pancreatic duct

After all the drainage tubes enter the pancreatic duct, it is very easy to induce acute pancreatitis, and ERCP surgery is difficult to remove. At present, the endoscopic removal of internally displaced drainage tubes is classified as a fourth-level operation at home and abroad, which is the most difficult ERCP operation. , and the failure rate is high, there are complications such as pancreatic duct injury, bleeding, and rupture during the operation, and acute pancreatitis is easily complicated after the operation

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