A model lung with the capacity for simulated spontaneous breathing

Area of Science:

• Biomedical Engineering
• Respiratory Physiology

Background:

• Mechanical ventilation is crucial for respiratory support.
• Evaluating ventilator performance, especially with advanced features, requires sophisticated models.
• Simulating physiological breathing patterns and reflexes enhances model realism.

Purpose of the Study:

• To introduce a new artificial lung model.
• To enable the study of ventilators interacting with patient physiology.
• To facilitate research on spontaneous breathing capabilities and reflexes.

Main Methods:

• Development of an artificial lung model with dual ventilation capabilities.
• Integration of pre-determined spontaneous breathing rate and depth.
• Implementation of a simulated Hering-Breuer reflex to block inspiration during artificial inflation.

Main Results:

• The model successfully simulates both artificial and spontaneous breathing.
• It allows for the assessment of ventilator triggering, synchronization, and mandatory minute ventilation.
• The Hering-Breuer reflex simulation was successfully implemented.

Conclusions:

• The described artificial lung model is a valuable tool for respiratory research.
• It is particularly suitable for evaluating advanced mechanical ventilators.
• The model enhances the study of patient-ventilator interactions and respiratory control mechanisms.