Buccal inhalation system for oxygen or curative gases comprises tube with end shaped to receive aluminum gas cylinder and equipped with piercer

摘要

Buccal inhalation system consists of a moulded plastic tube (1) with an end shaped to receive an aluminum cylinder (5) of oxygen or curative gas. The tube is fitted with a disc (3) equipped with a hollow punch to pierce the cylinder, and a second spring-loaded disc (4) covering holes in the first disc and equipped with a rod to block the punch. The two discs and spring are made from stainless steel. The end of the tube containing the cylinder is closed by a cap containing a filter for incoming air.