| 摘要 |
PROBLEM TO BE SOLVED: To provide an indicator for a medical tube provided with a cuff in which a first and a second synthetic resin sheet walls are speedily separated by inflow pressure of fluid flowing in through the cuff to achieve action as the indicator even when the first and the second synthetic resin sheet walls are attached by external force. SOLUTION: An indicator 1 is composed of a first and a second synthetic resin sheets A, B laminated each other at their circumferential edge parts to form a bag-shaped member, thickness of the first and the second synthetic resin sheets A, B is set at 0.05-1.00mm, and an inner surface of at least one of the first and the second synthetic resin sheets A, B is provided with matte patterns of 2.0-20.0μm at a 10 point-averaged roughness.
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