| 摘要 |
A laryngeal mask of the type used to facilitate lung ventilation and the insertion of endotracheal tubes or related medical instruments through a patient's laryngeal opening as used during general anesthesia, intensive care, or critical patient care. Th e mask includes an inflatable positioning shield formed to fit within a patients oropharynx and seal around the circumference of the laryngeal opening, the shield having an inflatable annular toroid peripheral portion, a contoured rear portion, and a recessed front. The mask also includes a flexible respiratory tube having a proximal end lumen, a gently curved tubul ar body of sufficient size to permit passage of endotracheal tubes, and related medical instruments, and a distal end passing through and secured to the proximal edge of the annular toroid peripheral portion. The distal end of the tube terminates at the distal lumen within th e recessed front of the inflatable positioning shield such that tubes and instruments passing through the flexible respiratory tube will be directed into the laryngeal opening. An adapter for use with medical devices is also disclosed. The adapter includes a body, a first end, a secon d end, and a passage therethrough wherein one end has an elliptical cross-section. |
