Intrahepatic stone extractor

Abstract

The invention discloses an intrahepatic stone extractor. The intrahepatic stone extractor comprises an operating rod. A control assembly and a clamping assembly are arranged in the operating rod. Theclamping assembly comprises two symmetrically-arranged clamps, the two clamps comprise clamping arms, clamping bodies and installing rings, the ends, close to the clamping bodies, of the two clampingarms are hinged to the installing rings, a closed clamping cavity is formed when the two clamping bodies are closed, a breaking device is arranged in the operating rod, and a driving device drives thebreaking device to stretch into the closed clamping cavity to break stones in the clamping bodies. The breaking device comprises a screw-shaped drill bit and a connecting rod, the drill bit is fixedly connected with the connecting rod, a locking assembly is arranged on the connecting rod, the locking assembly comprises multiple supporting arms, when the drill bit rotates, the ends, away from a hinge shaft, of the supporting arms are rotated to be radially diffused to be in supporting contact with the clamping arms, the state that the clamping arms are opened up is kept, and therefore it is avoided that in the stone breaking process of the drill bit, a gap is generated when the clamps are separated, and the small broken stones are separated out of the clamps.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a device for taking out intrahepatic bile duct stones. Background technique [0002] Intrahepatic bile duct stones are a type of bile duct stones, which refer to stones in the bile ducts above the confluence of the left and right hepatic ducts. It can exist alone or coexist with extrahepatic bile duct stones. Usually bilirubin stones. Intrahepatic bile duct stones are often combined with extrahepatic bile duct stones; complicated by bile duct obstruction; local infection and secondary bile duct stenosis are induced, making it difficult to expel the stones on their own, and the disease persists. This disease can cause serious complications and is an important cause of death in benign biliary tract diseases. At present, surgery is the main treatment method for intrahepatic bile duct stones. The stone extraction tool commonly used in surgery is a stone extraction basket. There wi...

AI Technical Summary

Problems solved by technology

This disease can cause serious complications and is an important cause of death in benign biliary tract diseases. At present, surgery is the main treatment method for intrahepatic bile duct stones. The stone extraction tool commonly used in surgery is a stone extraction basket. There will be some larger stones, which are not easy to remove due to the small surgical opening. On the other hand, some stones of the opposite sex are easy to stretch the stone basket, resulting in tearing or falling off the stone mesh basket during the removal process, which increases the doctor’s Difficulty of stone removal

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