Claw-shaped bile duct and pancreatic stent taking-out instrument

Abstract

The invention relates to the field of medical instruments, and particularly relates to a claw-shaped bile duct and pancreatic stent taking-out instrument, which comprises an outer sheath, a piston cavity is formed in the left end part of the outer sheath tube; the lower end of the piston cavity communicates with a conduit; the other end of the catheter penetrates out of the right end of the outersheath tube and is provided with an air bag assembly, a cavity ejecting piece is arranged at the upper end of the piston cavity; the lower side of the cavity ejecting piece is connected with a pistonpiece matched with the piston cavity through a spring; a connecting rod is arranged on the upper side of the piston part, the upper end of the connecting rod penetrates through and penetrates out of the cavity top part, a moving disc is integrally arranged at the upper end of the connecting rod, multiple sets of taking-out parts are evenly, obliquely and rotationally connected to the upper side ofthe moving disc, claw hooks are obliquely arranged at the top ends of the taking-out parts, and notches of the claw hooks face outwards; according to the invention, a biliary stent is hooked and taken out from the inner side of the biliary stent through the claw hooks, so that the duct at the imbedding part is prevented from being expanded, the difficulty of hooking the biliary stent by the clawhooks is reduced, and the lesion of the pipeline is prevented from being damaged.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a claw-shaped bile duct and pancreatic stent removal device. Background technique [0002] Biliary obstruction refers to the mechanical obstruction of bile duct that causes poor bile excretion or even complete blockage due to diseases such as intraluminal lesions of the bile duct, diseases of the duct wall itself, and infiltration and compression outside the duct wall. Manifested as jaundice, accompanied by dull pain in the upper abdomen, chills and fever. The nature of abdominal pain is generally distending pain and colic. [0003] At present, the best way to treat biliary obstruction is to implant a biliary stent into the narrow or obstructed area, so as to decompress and drain, support, and facilitate the healing of the biliary tract. When the biliary obstruction disappears or the biliary tract recovers, the biliary stent needs to be removed from the implanted site, but the imp...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned shortcomings existing in the prior art, the present invention provides a claw-shaped bile duct and pancreatic stent removal device, which can effectively solve the problem of enlargement of the duct at the insertion site caused by the multi-claw structure hooking the biliary stent in the prior art, not only does not It is convenient for the claw hook to pick up the biliary stent, which increases the difficulty of hooking and may cause damage to the pipeline lesion

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