Abstract: A tube distal end position detection system (1) includes a light source device (50) that emits light, a hollow tube (10) having a flow path (11) that allows a liquid to flow through, a connector (20) provided at a base end of the tube so as to allow light from the light source device to be incident on an end surface (12) at the base end of the tube, and a light emitting portion (30) provided at the distal end of the tube. Light from the light source device passes through the tube and is emitted from the light emitting portion and transmitted to the body surface.

Abstract: The present invention relates to a vacuum triple-structure suction plate, and more particularly, to a vacuum triple-structure suction plate that is detachably attached to the walls in a bathroom or a kitchen by vacuum pressure and has a suction plate 110 recessed downward so that when the suction plate 110 is pulled up to be sucked by vacuum, the bottom is brought in close contact with a surface from the middle portion into a vacuum state and is then completely brought in close contact with the surface by stress in the body 300.

Abstract: The present invention relates to a vacuum triple-structure suction plate, and more particularly, to a vacuum triple-structure suction plate that is detachably attached to the walls in a bathroom or a kitchen by vacuum pressure and has a suction plate 110 recessed downward so that when the suction plate 110 is pulled up to be sucked by vacuum, the bottom is brought in close contact with a surface from the middle portion into a vacuum state and is then completely brought in close contact with the surface by stress in the body 300.