Electrocauterization endoloop

Abstract

The invention provides an electric snare including a snare handle, an injection handle, a coil and a transition joint; the transition joint is connected to the snare handle via a first connecting tube, and is connected to the injection handle via a second connecting tube; the coil Constructed in a hollow shape and defining an internal diversion channel, the diversion channel communicates with the transition joint through a protective tube; the outside of the electric coil is also connected with a metal wire, and the metal wire passes through the transition joint and the first connecting tube Afterwards, it is connected with the slip ring of the snare handle; the coil of the snare is also provided with a hollow barb, and the hollow barb communicates with the diversion channel inside the coil, and is connected with the protection tube, the transition The joint and the injection handle together form an injection channel. The electric snare of the present invention can inject liquid into the deep layer of the gastrointestinal mucosa lesion through the hollow barb on the snare coil, and then use the snare to excise the tissue, greatly shortening the operation time and increasing the operation efficiency.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an electric snare (for a speculum). Background technique [0002] Using the forceps of the gastroenteroscope and applying various special instruments to directly resect part of the gastrointestinal mucosa under the gastroenteroscope is a minimally invasive gastroenteroscopic surgery that has been widely carried out at present. The electric snare is a commonly used endoscopic instrument, which uses a ring coil to cover the mucosa of the lesion, and then energizes it to remove it. Its operation is relatively simple, and compared with other endoscopic tools, it is less likely to injure the deep layer of the lesion. But its application is limited. The electric snare can only be used to resect raised lesions with pedicles, and it is difficult for the ring coil to trap flat lesions. [0003] If the flat lesion is relatively small, the method of injecting liquid under the lesion mu...

AI Technical Summary

Problems solved by technology

[0005] Both of the above two surgical methods need to exchange instruments, and ESD requires frequent replacement of injection needles and stripping knives. The stripping knives may also cause bleeding and perforation of the gastrointestinal tract wall. Complications are greatly increased

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