| 主权项 |
1. A supraglottic airway comprising:
a respiratory tube having a distal end, a proximal end, and a length therebetween, said respiratory tube having a hollow interior; and a shield comprising a posterior base and a sealing ring surrounding said posterior base, said sealing ring having an exterior side surface extending substantially around said posterior base, an upper surface extending from said exterior side surface and transitioning generally toward a center of said posterior base, and an inner surface extending from said upper surface, together said exterior side surface, said upper surface, and said inner surface defining an inner volume within said sealing ring and a cavity above said posterior base, said upper surface generally defining an opening into said cavity and said inner surface transitioning away from said upper surface and into said cavity; wherein said shield is attached to said distal end of said respiratory tube so that said hollow interior of said respiratory tube is in fluid communication with said cavity; wherein said hollow interior and said cavity jointly define an air path; and wherein said inner volume of said sealing ring is capable of fluid communication with said air path. |
