| 摘要 |
An endotracheal tube comprising a tubular member including a distal portion and a distal end, a radiopaque stripe extending longitudinally along the distal portion of the tubular member, and a radiopaque ring encircling at least a portion of the tubular member at the distal end. The radiopaque ring may be a complete oval, a substantial arc of an oval, or a series of arcs of an oval.
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