| 摘要 |
A modified laryngeal mask airway device (LMA-device) is provided with means to improve ease of insertion, reliability of function and higher seal pressure (i.e., cuff pressure ratio). The LMA-device includes an inflatable main cuff which, when inflated, has the shape of a torus generated by an asymmetrical oval, and also includes a back plate with a bowl having a transversally concave laryngeal-side and a convex pharyngeal-side. The back plate is bonded to a periphery of the main cuff establishing a separation between a laryngeal chamber region and a pharyngeal region. The back plate includes an external tube joint adjacent to the proximal region of the main cuff. |
