The present invention relates to a device and a method for measuring the length of a stenotic lesion region. The device for measuring the length of a stenotic lesion region according to an embodiment of the present invention is characterized by including: a guide tube passing through a stenotic lesion region； an air injection tube provided in the guide tube； an expansion part provided at a first side end of the guide tube and connected to the air injection tube to receive air and be expanded； and an air injector provided at a second side end of the guide tube disposed outside a human body to inject air suctioned from the outside through the air injection tube into the expansion part, wherein the guide tube has an identification indicator by which the length of the stenotic lesion region is checkable. According to the present invention, the length of the stenotic lesion region in a tubular organ that is bent in a 3-dimensional space (e.g., a duodenum, an esophagus, and a large intestine) may be calculated.La présente invention porte sur un dispositif de mesure d'une lésion sténosée qui comprend un tube de guidage passant à travers la lésion sténosée； un tube d'injection d'air dans le tube de guidage； une partie d'expansion à l'extrémité latérale du tube de guidage et reliée au tube d'injection d'air pour recevoir de l'air et être déployé； et un injecteur d'air à l'extrémité latérale du tube de guidage, à l'extérieur du corps humain, pour injecter de l'air à travers le tube d'injection d'air dans la partie d'expansion. Le tube de guidage a un indicateur d'identification mesure la longueur de la lésion sténosée dans un organe tubulaire courbé tel que le duodénum, l'œsophage ou le gros intestin.본 발명은 협착병변부위 길이측정장치 및 길이측정방법에 관한 것이다. 본 발명의 일실시예에 따른 협착병변부위 길이측정장치는, 협착병변부위를 통과하는 가이드관； 상기 가이드관 내에 구비된 공기주입관； 상기 가이드관의 제1측 말단에 구비되며, 상기 공기주입관과 연결되어 공기를 제공받아 팽창되는 확장부； 및 신체외부에 위치하는 상기 가이드관의 제2측 말단에 구비되며, 상기 공기주입관을 통해 외부로부터 흡입한 공기를 상기 확장부로 공기를 주입하는 공기주입기；를 포함하며,상기 가이드관은 상기 협착병변부위의
