High frequency treatment tool for mucous membrane exfoliation

Abstract

The present invention relates to a high frequency treatment instrument and a mucosa membrane releasing method using the same, the method of the present invention can perform the treatment such as resection and release of a mucous membrane safely, speedily and efficiently. The high-frequency treatment instrument 1 has a flexible sheath 2 into which a treatment instrument body 10 with an electrode member 13 connected to the distal end of a flexible cord 11 is inserted. A stopper member 14 is attached to the distal end of the flexible sheath 2, and a reference surface F is formed by the distal end face of the stopper member and the distal end face of the flexible sheath 2. The electrode member 13 is extracted from an insertion hole 15 bored in the stopper member 14 to a position to be restrained by a restraining member 16 by operating a control means 4 connected to the proximal end part of the flexible sheath 2.; The length of the farthest projection of the electrode member 13 at the farthest projecting position from the flexible sheath 2 is longer than the thickness of a mucous membrane layer LU and shorter than the total thickness of the mucous membrane layer LU and a lower mucous membrane layer LM. The high-frequency treatment instrument 1 also has a saline solution feeding means.

Description

technical field [0001] The present invention relates to a high-frequency treatment instrument and a mucosal stripping method using the high-frequency treatment instrument. The high-frequency treatment instrument is inserted into the treatment instrument insertion channel of an endoscope, and can be used for cutting For treatments such as opening and peeling off the lesioned mucous membrane, and supplying biocompatible liquids such as physiological saline, hyaluronic acid sodium salt, or glycerin (glyceol). Background technique [0002] When a lesion such as a tumor is found on the mucous membrane of the inner wall of a body cavity such as the esophagus, stomach, duodenum, or large intestine by endoscopic examination, the lesioned mucous membrane is resected. One of such treatments is called endoscopic submucosal dissection (ESD: Endoscopic Submucosal Dissection). This ESD treatment is usually performed as follows. Firstly, mark the part of the mucous membrane that needs to...

AI Technical Summary

Problems solved by technology

However, due to repeated operations of hooking the mucosa or submucosa with the hook-shaped knife constituting the electrode member, pulling it in toward the treatment instrument insertion channel while energizing, thereby cutting the tissue, and then leading out the hook-shaped knife from the treatment instrument insertion channel, thereby The efficiency and rapidity of its operation cannot be obtained

Therefore, it takes a long time to remove the diseased mucosa, which increases the pain of the examinee and the burden on the operator.

Moreover, the hook portion is often exposed to the outside. For example, when the treatment instrument is inserted into the channel for insertion operation, if an error occurs when the electrode member is energized, problems such as damage to the inner wall of the channel occur.

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