Medical & Dental

Children benefit from exoskeleton made on Sinterit desktop SLS 3D printer

In partnership with 3D printer manufacturer Sinterit, designer Bartłomiej Gaczorek has designed a custom fitting exoskeleton for children with SMA (Spinal Muscular Atrophy).

The genetic condition, which can severely impede the lives of young children, causes a loss of movement in limbs due to dysfunctional nerves.

With adequate equipment however, many children with SMA can find the support they need to keep healthy and active.

Laser sintered joints on Gaczorek's specially designed exoskeleton. Image via Sinterit
Laser sintered joints on Gaczorek’s specially designed exoskeleton. Image via Sinterit


The exoskeleton project was launched by Gaczorek after receiving a call from a parent asking for assistance. At this point, the family had tried many 3D printed designs for their 3 year old son, but none had been sufficient in meeting the requirements.

A primary criteria of the design was that comfort should remain paramount throughout the device’s conception. Second, but also important, was the cost to produce the arm, and also the reliability of its design and materials.

Taking these needs into account, the arm was created by Gaczorek with consideration of other supportive exoskeletons on the market, and consultation with parents, doctors and physiotherapists who understand the condition.

Gaczorek's specially designed exoskeleton to be worn as support on a child's arm. Image via Sinterit
Gaczorek’s specially designed exoskeleton to be worn as support on a child’s arm. Image via Sinterit

SLS is the best solution 

Gaczorek CAD modeled the exoskeleton using Autodesk’s award winning 3D design software Fusion 360. It was then 3D printed on a Sinterit Lisa desktop SLS 3D printer.

“I decided to print main elements in SLS technology,” says Gaczorek, “because it is able to print complex internal structure. [A] very important factor for me is also the comfort of user which is much better with SLS/SLA than with FDM technology.”

The cost of production was also significantly cheaper than the market’s industrial alternative.

The Sinterit Lisa 3D printer. Photo via Sinterit
The Sinterit Lisa 3D printer. Photo via Sinterit

Future advances 

The successful exoskeleton has now been used to support the mobility of 3 children with SMA. It is hoped that in time the device will reach more children worldwide.

This year, Sinterit received €1 million in funding from Germany’s FIT AG with the aim of advancing affordable SLS solutions.

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Featured image: A supportive arm exoskeleton complete with SLS 3D printed components. Image via Sinterit