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Related Experiment Video

Updated: Jun 5, 2026

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

Ventilation through a small-bore catheter: optimizing expiratory ventilation assistance.

A E W Hamaekers¹, P A J Borg, T Götz

¹Department of Anaesthesia, Maastricht University Medical Centre, PO Box 5800, 6202 AZ Maastricht, The Netherlands. a.hamaekers@mumc.nl

British Journal of Anaesthesia

|December 24, 2010

Summary

The novel DE 5 ejector offers superior dynamic suction for emergency transtracheal ventilation compared to the SBP 07. This optimized device shows potential as a portable emergency ventilator for small-bore catheters.

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A Novel Rescue Technique for Difficult Intubation and Difficult Ventilation

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Published on: January 17, 2011

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A Novel Rescue Technique for Difficult Intubation and Difficult Ventilation

A Novel Rescue Technique for Difficult Intubation and Difficult Ventilation

Published on: January 17, 2011

Area of Science:

Biomedical Engineering
Respiratory Physiology

Background:

Transtracheal catheter ventilation is a critical intervention for "cannot intubate, cannot ventilate" scenarios.
Ejectors utilize the Bernoulli principle to aid expiration through small catheters.
This study compares a novel ejector (DE 5) with a modified industrial ejector (SBP 07).

Purpose of the Study:

To evaluate the performance of a novel ventilation ejector (DE 5) for emergency airway management.
To compare the DE 5 with a previously proposed ejector (SBP 07).

Main Methods:

Bench testing of ejector performance, including static and dynamic pressures, suction capacity, and entrainment ratios.
Assessment of the DE 5 in a lung simulator with simulated airway obstruction.
Measurement of inspiratory/expiratory times and calculation of minute volumes.

Main Results:

The DE 5 demonstrated higher dynamic suction capacity than the SBP 07.
The DE 5 achieved a minute volume of up to 8.27 L/min with a transtracheal catheter.
Ejector efficiency was dependent on driving gas flow rate and lung simulator compliance.

Conclusions:

The DE 5 is an optimized ventilation ejector for expiratory assistance in laboratory settings.
Further research is needed to confirm its clinical utility as a portable emergency ventilator.