1. Outer tube
2. Inner tube: Fits snugly into outer tube, can be easily removed for cleaning.
3. Flange: Flat plastic plate attached to outer tube - lies flush against the
patient’s neck.
4. 15mm outer diameter termination: Fits all ventilator and respiratory
equipment.
All remaining features are optional
5. Cuff: Inflatable air reservoir (high volume, low pressure) - provides
maximum airway sealing for ventilation To inflate, air is injected via the air
inlet valve on the pilot tube.
6. Air inlet valve: One-Way valve that prevents spontaneous escape of the
injected air.
7. Air inlet line: Route for air from air inlet valve to cuff.
8. Pilot cuff: Serves as an indicator of the amount of air in the cuff
9. Fenestration: Hole situated on the curve of the outer tube - used to allow /
enhance airflow through the vocal cords.
10. Speaking valve / tracheostomy button or cap (cork): Used to occlude
the tracheostomy tube opening:
(a) Speaking valve - during expiration to facilitate speech and
swallowing
(b) button cap or cork - during both inspiration and expiration prior to
decannulation.