Improvements in or relating to facial masks for use in the administration of anaesthetics or other gases

Abstract

Abstract 492,723. Anaesthetic and like apparatus. HALL, V. L. L. March 25, 1937, No. 8743. [Class 81 (ii)] A rubber or like nasal mask 2 for administering anµsthetic or other gases has a channel, formed in the wall thereof and leading from an inlet tube 1, substantially opposite the bridge of the nose, to a point directly beneath the nostrils. The channel may comprise a closed conduit within the mask wall or a groove 3 covered by a flexible or other deflector plate 4 preferably connected to or integral with the inlet tube. The mask may be combined with the valve described in Specification 486,223.

Inventors

No inventors recorded.

Bibliographic Details