Additive Manufacturing Strategies

KAFO Splint — 3D Printed Leg Brace Customized for a Perfect Fit

ST Medical Devices

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Or Steiner KAFO SplintThe KAFO Splint is a customizable, lightweight, fashionable – and functional – leg brace design. Industrial designer, Or Steiner gave the old-fashioned leg brace a modern update which fuses the aesthetically pleasing with the strength needed to support a patient.

If you need them, there is no substitute for braces or splints. Whether as a result of injury or illness, the need to support the full weight of a patient is crucial to their comfort and mobility. In the KAFO Splintpast, such braces left much to be desired when it comes to function and looks.

Steiner, a former student at the Shenkar College of Engineering and Design, came across 3D printing technology when he sought to make models for his product designs, and his medical device design was the result of a chance meeting with a patient named Ron who had been in an accident some years before.

The accident left Ron dependent on a wheelchair or a set of leg braces and crutches, but the heavy and uncomfortable design of the braces made him unwilling to wear them at all.

KAFO Splint 3To come up with something useful, Steiner began to work on a personalized set of braces which would be both fashionable and practical.

“The brace has several essential parts: some catch the thigh and calf back, sit on the knee ligament, a strong skeleton through a brace from the thigh to the foot, a knee hinge and a foot pad that secures it at an angle of 90 degrees,” Steiner says. “Current braces are cumbersome, heavy, not aesthetic, and Ron did not frequently use them. I wanted to design braces and crutches with an advanced technology so that those who need them want to use them.”

This “KAFO Splint,” is solid enough to provide stability, but the open design allows for airflow, and as an added bonus, 3D scanning technology means each KAFO Splint can easily be adapted perfectly to fit a patient’s body.  Steiner used the rigid opaque black version of Stratasys’ 3D VeroBlack material to provide the strength and support required to build the KAFO Splint.

“The main advantages are that it is customized and personalized to the user,” Steiner told the Stratasys Blog. “The 3D print can look like a regular product that was created using injection molding, but it’s actually custom made. The design possibilities are great, and the finished product can be very attractive.”

The KAFO Splint was built using an Objet1000 Multi-material 3D Production System following months of trial sketches and designs. According to Steiner, he was particularly pleased that his design could be printed in one piece, and even though the KAFO Splint covers most of a patient’s leg, the entire finished 3D print fit easily within the one-meter build tray of the Objet1000 printer.


KAFO Splint 2

Have you seen other versions of medical devices or splints which were entirely 3D printed? Let us know in the Lightweight Leg Brace forum thread on 3DPB.com.

 

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