---
title: "Barrier Device | First Aid Glossary"
description: "Protective equipment used during mouth-to-mouth resuscitation to prevent infection. Learn safe first aid use, key checks, and responder safety tips."
canonical: "https://www.australiawidefirstaid.com/resources/glossary/barrier-device"
---

# Barrier Device

[Resources](https://www.australiawidefirstaid.com/resources) › [Glossary](https://www.australiawidefirstaid.com/resources/glossary)

## What is a Barrier Device?

Barrier devices, such as face shields and pocket masks, are used during CPR to protect both the rescuer and the casualty from potential infections. These devices create a barrier between the rescuer's mouth and the casualty's mouth and nose.

Barrier devices, such as face shields or masks with one-way valves, are used during resuscitation to protect both the rescuer and the casualty from potential infection transmission. These devices provide a physical barrier while allowing air to pass through during mouth-to-mouth resuscitation. Using barrier devices is especially important when there is a risk of contact with body fluids.

They are essential components of first aid kits and should be readily available in emergencies to ensure safe and effective artificial respiration .

## Using a Barrier Device

1. Place the barrier device over the casualty’s mouth and nose.
2. Ensure a good seal to prevent air leakage.
3. Perform rescue breaths through the device according to CPR guidelines.
4. Clean or dispose of the barrier device according to hygiene protocols after use.

> Device used to protect rescuers during mouth-to-mouth resuscitation.

## Related video: How to use a Pocket Mask for CPR

[Watch on YouTube](https://www.youtube.com/watch?v=XTWhpMi_xH4)

## Learn this hands-on

A nationally accredited first aid course covers this and much more. [Find a course and check live session availability](https://www.australiawidefirstaid.com/#find-course).

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