Lung simulator

This article or the following section is not adequately provided with supporting documents ( e.g. individual evidence ). Information without sufficient evidence could be removed soon. Please help Wikipedia by researching the information and including good evidence.

Lung simulators are devices or software that are used for training and for testing purposes, e.g. B. be used by ventilation systems.

A lung simulator consists of at least one resistance element, e.g. B. a hose and an elastic element, e.g. B. a balloon. Mathematically, this is represented by the so-called "equation of motion" or "equation of motion" as a function of time:

paw (t) = Raw * dV (t) / dt + V (t) / Crs

where paw (t) is the airway pressure, Raw is the airway resistance, dV (t) / dt is the gas flow in the airways, Crs is the total respiratory compliance and V (t) is the volume that has flowed into the lungs.

Simple test lungs are used in clinical practice.

The lung simulators simulate the human lungs , in some cases the lungs of animals are also simulated. There are different lung simulators (from simple to highly complex). The simplest lung simulator is a glass bottle. A glass bottle (about 40 l) filled with copper wool and expanded polystyrene is used to simulate the lungs of an adult.

With the passive lung simulators, the parameters Resistance ( breathing resistance ) and Compliance (elasticity) are set. A number of additional parameters can be set with active lung simulators.