Cannula Barb Inogen One® G5® (SKU: RP-505) | Essential Oxygen Delivery Replacement Part

What is the Cannula Barb Inogen and why is it important?

The Inogen Cannula Barb (SKU: RP-505) is a critical oxygen delivery connector that attaches your nasal cannula to your Inogen One G5 or React Health Rove 6 portable oxygen concentrator. It ensures that medical-grade oxygen flows securely and directly from the device to you — with no air leaks, gaps, or disruption.

Although small, this part is vital for maintaining reliable and safe oxygen therapy. Over time, regular use can cause wear and tear, weakening the seal or compromising the fit.

That’s why Inogen recommends replacing this component once a year — to maintain performance and ensure safety.

Why Should You Replace It Annually?

Regular use of the concentrator — especially in active lifestyles or frequent travels — exposes the barb to constant connection/disconnection, heat, and environmental dust.

If not replaced:

• Oxygen delivery may become inconsistent

• The barb may loosen, causing leaks

• The output filter cannot be accessed, impacting air purity

By changing the cannula barb every 12 months, you maintain the reliability of your therapy and comply with manufacturer-recommended care.

What’s Behind the Barb? The Output Filter

Directly behind the barb sits the output filter, a high-efficiency element that captures any final contaminants or particles before oxygen is inhaled.

⏱ This output filter must be replaced every 6 months.

However, to replace the output filter, you must first remove the cannula barb.

To do this safely and without damaging the concentrator port, a dedicated tool is required.

Do You Need a Tool to Remove It?

Yes. Inogen recommends using the official Output Filter Wrench, a small but precise tool that allows you to unscrew the barb safely and reinstall it properly.

Get the tool + output filter here:
Output Filter Replacement Kit for Inogen One G5 & G4

Want to Save Money? Choose the Inogen G5 Maintenance Kit

Instead of buying each part separately, consider our Inogen One G5 Maintenance Kit, which includes:

Everything you need to maintain your Inogen One G5 concentrator — in one cost-saving bundle.

View Inogen G5 Maintenance Kit

What Is the Inogen One G5?

If you’re using or considering the Inogen One G5, you’re already relying on one of the most compact, travel-friendly, and reliable portable oxygen concentrators on the market. It offers:

• Pulse dose oxygen delivery (settings 1–6)

• FAA approval for air travel

• Battery life up to 13 hours with double battery

• Quiet, lightweight design (from 4.7 lbs)

Learn more about the Inogen One G5 Portable Oxygen Concentrator here (Insert link to product page)

Frequently Asked Questions (FAQs)

1. What is the Cannula Barb Inogen (RP-505) used for?

The cannula barb connects your nasal cannula to your Inogen One G5 or React Rove 6 portable oxygen concentrator. It ensures that oxygen flows securely from the device to your airway.

2. Why do I need to replace the cannula barb every year?

With regular use, the barb can wear out, become loose, or accumulate debris, leading to oxygen leaks or unstable therapy. Annual replacement is recommended by Inogen to maintain secure and effective oxygen delivery.

3. What is the output filter, and how is it related to the barb?

The output filter sits directly behind the cannula barb and helps purify the oxygen before it reaches you. It must be replaced every 6 months, and to access it, you must first remove the barb.

4. Can I remove the barb without a tool?

It’s not recommended. You need the official Output Filter Wrench to safely remove the barb without damaging the device port. You can buy the wrench separately or as part of the Output Filter Kit or Maintenance Kit.

5. Is this barb compatible with other concentrators?

This model (SKU: RP-505) is specifically designed for the Inogen One G5 and the React Health Rove 6. It is not compatible with older models like the Inogen G3 or non-Inogen devices.

6. What comes in the box when I order this product?

You will receive:

• 1x Cannula Barb (RP-505)
  Note: Output filter, tool, and other accessories are sold separately.