Leakage Characteristics of Dual-Cannula Fenestrated Tracheostomy Tubes during Positive Pressure Ventilation: A Bench Study

Table 1

Types and specifications of tracheostomy tubes tested.

Type	Manufacturer	Size	Inner cannula; Internal diameter	Outer cannula; Outer diameter
Portex Blue Line Ultra	Smith Medical, Grasbrunn, Germany	8	6.5 mm	11.9 mm
TRACOE twist	Tracoe Medical, Nieder-Olm, Germany	8	8.0 mm	11.4 mm
Rüsch Traceofix	Teleflex, Kernen, Germany	8.5	7.0 mm	10.3 mm