Mobility equipment specialist Ottobock has launched the latest version of its Harmony system, which enhances socket comfort for below-knee amputees.

Designed with more active below-knee amputees in mind, the Harmony P4 features a robust design and improved fit and performance compared to its P3 predecessor.

The Harmony P4 uses an active vacuum to securely connect the prosthesis to the residual limb. The vacuum mechanically extracts the air between the suspension sleeve and the liner in order to establish a firm connection.

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In turn, it produces a more comfortable fit and subsequently reduces the risk of skin damage and the risk of falls and stumbles.

A below-knee amputee has trialled the P4 and has been impressed by its performance. He said: “Because of my high activity level, I’ve worn out a couple of P3 systems over the years — I play a lot of golf, so it’s no surprise!

“But with the P4 I feel like I could put it through anything and it’d survive. It’s really very good, from the way it reacts as I move to the vacuum, which is significantly better than its predecessor.”

As well as improved performance, fit and appearance, the P4 is easy to use and has a more robust design. In addition, its active vacuum technology secures the fit in a few steps, making it faster than other mechanical vacuum pumps, says the company.

Alan McDougall of ProActive Prosthetics commented: “The Harmony P4 is a great improvement on the P3. It has a very short build height so you can fit it into most limb-builds.

“From a manufacturing point of view it was very easy to produce and build, and having the ability to rotate the pump on the socket will allow you to fit a foot straight onto the pump and still get the correct foot alignment, this will allow you to use the Harmony P4 on much longer residual limbs than before.

“Overall it looks, feels and functions excellently and I will be recommending this to many of my patients.”

Established in the UK in 1976, Ottobock is a supplier of innovative and practical solutions that restore human mobility and help people to rediscover personal independence.

Its product range includes prosthetic and orthotic components, wheelchairs, and rehabilitation and mobility products.

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