ENDOTRACHEAL TUBE

摘要

The distal end (2) of the endotracheal tube is provided with an end piece (6) pivotal about the longitudinal axis (0) of the tube and which is connected by a pivot coupling (7) with the tube (1). At a short distance from the pivot coupling (7) the tube (1) is surrounded by an inflatable cuff (12) and between the coupling (7) and the cuff (12) the tube (1) has a V-shaped incision (10) closed by a bellows membrane (11). A pull-wire (18) connects a point (B) of the tube tip with a pull ring (17) at the proximal end (3) of the tube. By tension on the ring (17) the tube tip is at first made to tilt and by continued tension the curvature of the tube changes, in conformity with the lumen during intubation. By activation of pull means (ring 17) the tube tip may be made to tilt in the curvature plane of the tube in order to be inserted into aditus laryngis under auscultatory-tactile control and further through glottis onwards to trachea upon gradually slackening the pull via the ring.