Retracting oral airway

Details Retracting oral airway Retracting oral airway

1996-04-26

1998-04-21

Lewis, Aaron J.

Surgery

Respiratory method or device

Means placed in body opening to facilitate insertion of...

12820714, 600215, A61M 1600

Patent

active

057407916

ABSTRACT:
An adjustable retracting oral airway for reversibly establishing a maximum flange-blade dimension of the distal portion of an intra-oral extension with respect to a dental flange. Several alternative extension retraction means coupled to a dental flange are used to establish varying degrees of freedom of motion of the intra-oral extension (including the blade) with respect to the flange. Mating surfaces of the blade extension and the extension retraction means may be frictional or may have positive interlock (as, for example, with ratchet or gear teeth). Living hinges of plastic material are used in low-cost embodiments, including an embodiment having a single wedge-lock hinge. Self-coiling tension members are found in low-profile embodiments allowing mask ventilation with a retracting oral airway in place.

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Fitzgerald, et al., "Excursions of the cervical spine during tracheal intubation: blind oral intubation compared with direct laryngoscopy," Anaesthesia 49:111-115, Feb. 1994.
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