Snare for removing tumor

Patent metadata

Field	Value
Publication number	US-10799262-B2
Application number	US-201616069459-A
Country	US
Kind code	B2
Filing date	Apr 5, 2016
Priority date	Jan 14, 2016
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

Disclosed herein is a snare (transparent cap) for removing a polyp which includes a stalk and a head connected to the stalk, wherein the snare includes: a body having a hollow tubular shape and an interior of which is partitioned into a plurality of chambers; a ring mounted to at least part of the body using elasticity; a first snare discharged outside the body through a first chamber among the plurality of chambers and hooks the stalk; and a second snare which is discharged outside the body through a second chamber among the plurality of chambers, wherein when the stalk is spread according to pulling the first snare that hooks the stalk, and the second snare pulls a first portion in a lower end of the stalk as spread including the head, the ring is discharged from the body and shrinks through the elasticity and then fixes the first portion.

First claim

What is claimed is:

1. A snare system to remove a polyp, the snare system comprising:
an endoscope comprising a first working channel, a second working channel, and a snare transparent cap, the snare transparent cap having a body of a hollow tubular shape with an interior partitioned into a plurality of chambers, the plurality of chambers comprising at least a first chamber and a second chamber, the first chamber associated with the first working channel, and the second chamber associated with the second working channel;
a first snare and a second snare, wherein the second snare is configured to be discharged through the second working channel and outside the second chamber to hook and spread a stalk of the polyp, wherein the first snare is configured to be discharged through the first working channel and outside the first chamber to hook a first portion of the stalk as spread by the second snare and to pull the first portion into the first chamber, the first portion including a head of the polyp, and wherein the second snare and the first snare are at least one of a hook type snare and a multi-legged type snare; and
a ring mounted on an outer circumference of the first chamber using elasticity, the ring configured to be discharged via the endoscope from the outer circumference and through the elasticity shrink to fix the first portion as hooked by the first snare, wherein the head of the polyp is removable by excision of an upper portion of the first portion using a current of the first snare, the upper portion including the head of the polyp.

Assignees

• Catholic Univ Korea Ind Academic Cooperation Foundation

Inventors

• Chae Hiun-Suk

Classifications

• A61B2017/12018

  Elastic band ligators · CPC title

• A61B18/148

  having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy · CPC title

• A61B2017/0034

  adapted to be inserted through a working channel of an endoscope · CPC title

• A61B2017/00818

  Treatment of the gastro-intestinal system · CPC title

• A61B2018/00196

  reciprocating lengthwise · CPC title