Patent ID: 8211007

Claim:
A lymph node removing method comprising the steps of: an insertion step, wherein an endoscope has an insertable insertion portion which is inserted into an esophagus or a trachea being a lumen inside the body of a subject; the step of inserting a distal end portion arranged at the tip of the insertion portion of the endoscope into the lumen; a confirmation step of confirming the position of a lymph node located outside the lumen by performing ultrasound scanning using an ultrasound transducer arranged at the distal end portion of the endoscope; an anchoring step of sticking a distal end of an anchoring device which has been inserted through a channel inside the insertion portion into a wall of the lumen so as to penetrate through the wall and placing the distal end of the anchoring device on the lymph node while performing the ultrasound scanning; an incision step of cutting the wall of the lumen to make a fistula for drawing the lymph node into the lumen, after placing the distal end of the anchoring device on the lymph node; and a drawing-in step of drawing the lymph node through the fistula and into the lumen in which the distal end portion of the endoscope is positioned with the anchoring device.