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Breathing

Breathing

The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...

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A Microfluidic Model of Biomimetically Breathing Pulmonary Acinar Airways

A Microfluidic Model of Biomimetically Breathing Pulmonary Acinar Airways

Published on: May 9, 2016

A miniature optical breathing sensor.

Jinesh Mathew¹, Yuliya Semenova, Gerald Farrell

¹Photonics Research Center, Dublin Institute of Technology, Kevin St., Dublin 8, Ireland.

Biomedical Optics Express

|December 18, 2012

Summary

This summary is machine-generated.

A new optical breathing sensor uses a photonic crystal fiber to detect humidity changes in breath. This novel sensor accurately monitors breathing patterns and rates, even during MRI scans.

Keywords:

(060.2370) Fiber optics sensors (060.5295) Photonic crystal fibers (120.3180) Interferometry (170.1610) Clinical applications (170.4580) Optical diagnostics for medicine

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Area of Science:

Biomedical Engineering
Optical Sensing
Medical Devices

Background:

Monitoring patient respiration is crucial, especially during procedures like Magnetic Resonance Imaging (MRI).
Traditional electronic sensors face limitations in MRI environments due to electromagnetic interference.
Visual monitoring of respiratory status can be challenging and unreliable.

Purpose of the Study:

To develop a novel, miniature optical breathing sensor.
To utilize an Agarose-infiltrated photonic crystal fiber interferometer for humidity detection.
To enable real-time breathing pattern, rate, and status monitoring.

Main Methods:

Fabrication of a photonic crystal fiber interferometer infiltrated with Agarose.
Detection of relative humidity variations between inhaled and exhaled breath.
Real-time interrogation of the sensor to determine respiratory parameters.

Main Results:

The sensor successfully detects humidity changes associated with respiration.
Breathing patterns, rates, and status are accurately determined in real time.
The optical sensor is compatible with MRI environments where electronic sensors are unsuitable.

Conclusions:

A miniature optical breathing sensor based on photonic crystal fiber is demonstrated.
The sensor provides a viable alternative for respiratory monitoring in challenging environments like MRI scans.
This technology offers a safe and effective solution for continuous patient respiratory monitoring.