Laryngeal mask

Details Laryngeal mask Laryngeal mask

1997-04-10

1999-08-17

Asher, Kimberly L.

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

12820714, 12820026, 128DIG26, A61M 1604, A61M 1600

Patent

active

059378603

ABSTRACT:
A laryngeal mask of the type used to facilitate lung ventilation and the insertion of endo-tracheal tubes or related medical instruments through a patient's laryngeal opening as used during general anesthesia, intensive care, or critical patient care. The mask includes an inflatable positioning shield formed to fit within a patient's 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 an proximal end lumen, a gently curved tubular body of sufficient size to permit passage of endo-tracheal 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 a distal lumen within the 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.

REFERENCES:
patent: 3734100 (1973-05-01), Walker et al.
patent: 5282464 (1994-02-01), Brain
patent: 5623921 (1997-04-01), Kinsinger et al.
patent: 5632271 (1997-05-01), Brain
patent: 5653231 (1997-08-01), Bell

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