Fig. 2
From: Endotracheal tubes and fluid aspiration: an in vitro evaluation of new cuff technologies
a The in vitro trachea model used in the aspiration of microbial fluid study. The 20 ml syringe was connected to the 10 ml enteral syringe via the tip. The endotracheal tube was placed in the 20 ml syringe. Fluid leaking past the cuff was collected aseptically in the enteral syringe. b the in vitro trachea model used in the range of tracheas study. The endotracheal tube was placed inside the rigid glass ‘trachea’ and the fluid leaked past the cuff was collected inside the model