Below-knee prosthesis with: Triton Harmony

The most intimate fit. Ever. The Triton Harmony elevated vacuum system

What you need to know

The Harmony solution

Do you have a problem with your prosthesis? We’ve got the solution!

Is your prosthesis ever uncomfortable? Does your socket seem to get looser over the course of the day? Does your leg feel poorly ‘connected’ to your prosthesis?

These issues can come from volume changes in the socket. Just like a shoe that’s the wrong size they can lead to painful skin problems that limit your activities.

The style of socket can make things worse for some users. Conventional Specific Weight Bearing Sockets can cause fluid loss by forcing fluids out of the limb during walking, while simultaneously reducing the surface area that distributes pressures.

To make up for the changes in limb volume, many users add socks to their residual limb during the day but this doesn’t get to the root of the problem: the loss of fluid and volume fluctuations.

A Specific Weight Bearing Socket can force fluids out of the limb, changing the limb volume.

The Harmony Triton elevated vacuum system includes a socket, the liner (between your leg and the socket), the Harmony functional ring, and the Triton carbon fiber foot. They all add up to incredible comfort!

Carsten with Harmony prosthesis sitting next to a man on his sail boat.

Intimate fit begins with the right socket

Conventional sockets force your leg to conform to the shape of the socket, and can create pressure peaks in sensitive areas. A Total Surface Weight Bearing socket (TSWB) on the other hand, supports your weight with its entire surface, instead of just on the edge or at the bottom.

It’s like the difference between walking in a shoe that fits perfect versus a shoe two sizes too big; even if you add enough socks, it will feel sloppy and may cause blistering.

User with Harmony prosthesis taking his dog for a walk in the woods.

The perfect liner

Our Anatomic 3D PUR liner (made from PolyURethane) distributes pressures in your socket to create a precise and comforable fit. It adds comfort and increases connection no matter how active you are.


Adding vacuum for amazing connection and comfort!

Add to the TSWB socket the Harmony’s elevated vacuum, and you’ll find that your leg is drawn more completely into the custom socket. This creates a more intimate fit, and allows fluids to be more easily drawn back into your limb when you’re walking.

You’ll feel the difference immediately:

  • Improved comfort and stability
  • Enhanced connection, or ‘linkage’ will help you feel where your leg is in space (proprioception),
  • Walk more naturally: by allowing you to spend more time on your prosthetic side
  • It may even help maintain skin health by increasing fluid flow.

Rick with Harmony prosthesis playing basketball with his children.

Handle any bumps in the road: torsion and shock absorber

At the heart of the elevated vacuum system is the Harmony functional ring. The ring acts as a pump with intake and exhaust valves to create the elevated vacuum. It also provides shock absorption and can even twist while you’re loading it, just like a real ankle.

Caroline with Harmony prosthesis going hand-in-hand with her boyfriend through the city.

These feet were made for walking!

Great for all your activities, the Triton’s three carbon fiber springs work together to give you a seriously smooth rollover. Add to that the adjustable heel, which helps to absorb shocks along with the functional ring and you can finally walk the way you want to walk.

Dan with Harmony prosthesis taking an early morning run along the water.

Go wherever the road takes you

The Triton foot’s split toe design adapts easily to uneven terrain, adding safety and stability both when walking and standing.