Metal stent drainage tube for percutaneous transhepatic duct puncture

Abstract

The utility model discloses a metal stent drainage tube for percutaneous transhepatic duct puncture, and belongs to the technical field of medical instrument manufacturing. The device comprises a drainage tube, an outer sleeve, an inner sleeve, a puncture needle, a drainage tube connector and a dressing patch. The drainage tube is divided into a head part and a body part, and the head part is a metal stent woven by titanium alloy wires; the outer sleeve comprises a head, a body, a tail and a connecting wire, wherein the head is conical, an opening is formed in the head end, and a connecting wire passing hole is formed in the tail; threads are arranged on the surface of the tail end of the inner sleeve; the puncture needle is a metal needle, a plastic resistance block is arranged at the head end, a cap-shaped connector is arranged at the tail end, and threads are arranged on the inner wall of the cap-shaped connector for screwing the puncture needle at the tail end of the inner sleeve;the connector comprises an inner core and a cap, threads are arranged on the surface of the inner core, threads are arranged on the inner wall of the cap, and the cap is screwed on the inner core; thedressing patch is an annular non-woven fabric patch, and a cap-shaped structure is arranged in the middle of the dressing patch. The metal stent drainage tube has the advantages that the metal stentdrainage tube can be directly punctured into an intrahepatic bile duct, the metal stent is retained for supporting stenosis, and the metal stent can be taken out subcutaneously after the stenosis is removed.

Description

technical field [0001] The invention belongs to the technical field of medical equipment manufacturing, and relates to a minimally invasive medical technology and surgical equipment, a minimally invasive surgical equipment used for percutaneous transhepatic bile duct puncture to treat benign and malignant extrahepatic bile duct stenosis, specifically a percutaneous hepatic bile duct stenosis. Biliary metal stent for puncture. Background technique [0002] Extrahepatic bile duct stricture is a common clinical disease and frequently-occurring disease, including inflammatory bile duct stricture, traumatic bile duct stricture, bile duct anastomotic stricture after liver transplantation, malignant bile duct stricture, etc. Poor bile excretion can cause chills, high fever, jaundice, and epigastric pain. Persistent obstruction can cause cholestatic cirrhosis, liver failure, and even endanger the life of the patient. [0003] The treatment of extrahepatic biliary stenosis includes ...

AI Technical Summary

Problems solved by technology

Among the three drainage methods, the external biliary drainage tube can only relieve jaundice, but cannot relieve stenosis. The loss of a large amount of bile will lead to anorexia, water, acid-base and ion disturbance; biliary plastic placement is second, but the rate of re-stenosis after stent removal is higher. High; biliary metal stent implantation is to treat extrahepatic bile duct stenosis to obtain a larger expansion diameter. It is generally used for the treatment of malignant extrahepatic biliary stenosis, and is rarely used for the treatment of benign biliary stenosis because percutaneous transhepatic puncture is difficult. Easy to remove the inserted metal stent

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