A kind of fetching catheter and method for endoscope

Abstract

The invention discloses an object retrieval catheter for an endoscope, which comprises a handle assembly, an outer sheath tube and an inner core assembly, a pipeline is arranged inside the handle assembly, and one end of the handle assembly is connected and communicated with the outer sheath tube , the other end of the handle assembly is provided with an inner core interface and a suction interface, and the inner core interface and the suction interface are respectively communicated with the pipeline in the handle assembly; the inner core assembly can be passed through the outer sheath through the inner core interface; The handle assembly can form a negative pressure suction force on the front end of the outer sheath tube through the suction interface and an external negative pressure source. When the retrieval catheter is applied, it extends through the endoscopic forceps to reach the operation area; during the retrieval operation, the retrieval catheter can be externally connected to a negative pressure source to form a negative pressure adsorption force at the front end of the outer sheath in the retrieval catheter. The fetching catheter solution provided by the present invention has the functions of fetching and attracting in one, and provides a brand new solution for realizing the fetching operation of fine stones or mud-like substances.

Description

Technical field [0001] The present invention relates to an endoscopic technique, specifically to an endoscopic-based object retrieval technique. Background [0002] With the popularization and improvement of endoscopic diagnosis and treatment technology, the application of ERCP (endoscopic retrograde cholangiopancreatography) is also increasing. In the current bile duct stone removal surgery, commonly used stone removal instruments include endoscopic stone net baskets and endoscopic stone balloons. [0003] The main function of the endoscopic stone mesh basket is to enter the stone part through the endoscopic jaw, and control the opening and closing of the head of the net basket through the handle, so that the head of the net basket can catch the stone and realize the removal of the stone. [0004] The main function of the endoscopic stone balloon is to enter the stone site through the endoscopic jaw, by injecting air or water into the balloon, opening the balloon, and removing t...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the existing endoscopic solutions cannot effectively remove fine stones or mud-like substances during the existing operation process, the purpose of the present invention is to provide a collection catheter for endoscopy that integrates functions such as collection and suction ; And based on the fetching catheter, an endoscope-based fetching method is provided

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