| 摘要 |
An air supply tube for a nasal breathing apparatus is made of a silicone material, and includes a tubular wall surrounding an axis and defining an axial hole. The tubular wall is corrugated, and includes a plurality of annularly-shaped concave and convex wall portions alternately arranged along the length of the air supply tube. The convex wall portions are farther from the axis than the concave wall portions. The concave wall portions have a first radial thickness which is larger than a second radial thickness of the convex wall portion.
|
