The medical device which is formed to one for kaniyureshiyon of the tube cavity which possesses strangulation is offered. The medical device has the sheath which possesses with the proximal part and the distal (2036) part and the 1st lumen long and narrow, the 1st lumen has penetrated the sheath at least partly. In addition as for the medical device, also the wire guide which possesses with the proximal non sectility shaft part of the cutting part and the non sectility advanced part and the cutting part has. Penetrating the 1st lumen at least partly, it extends wire guide, kaniyureshiyon it develops the strangulation section the cutting part at least one part by being arrangement possible outside the sheath. Also the method kaniyureshiyon of doing the strangulation section and is offered.
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