Health

GRAD STUDENTS ON THE FRONT EDGE OF DISCOVERY

Ahad Behboodi is a post-doctoral fellow with the University of Delaware’s Horn Entrepreneurship program. Behboodi is leading work to commercialize a promising robotic ankle brace for children with cerebral palsy, which grew out of his UD doctoral work with Samuel Lee, an associate professor in the College of Health Sciences. Behboodi earned his doctoral degree in biomechanics and movement science at UD in 2019.

Helping children move

by Karen Roberts

Growing up, Ahad Behboodi’s brother Ali often would say that Ahad was destined to “do something important” in life.

At the time it seemed like the wide-eyed musings of an admiring younger sibling. Looking back, Behboodi realizes that it is a message he has carried with him over the years, equal parts encouragement and responsibility.

Today, Behboodi is a postdoctoral fellow with the University of Delaware’s Horn Entrepreneurship program, where he is leading work to commercialize a robotic ankle brace with the power to help children with cerebral palsy (CP) move more freely.

Cerebral palsy is a lifelong condition characterized by joint stiffness, jerky movements and muscle tightness. It affects one in 323 children in the United States and is considered the most common motor disorder found in pediatric populations.

The brace is the first lower-extremity device designed to assist motion or provide support using soft muscle-like “smart materials” that contract in response to electric current. Made from off-the-shelf elastic materials, these artificial muscles closely mimic the function of the body’s skeletal muscles and can help children with CP that struggle to complete a range of motion under their own power.

“What is better than helping a little kid to move?” said Behboodi, who earned his doctoral degree in biomechanics and movement science at UD in 2019.

Inspiration for the wearable device grew out of Behboodi’s doctoral work with Samuel Lee, associate professor in UD’s Department of Physical Therapy, and collaboration with colleagues from the College of Health Sciences and the College of Engineering. Funding from the University City Science Center QED program and the Horn fellowship have allowed Behboodi to focus full time on turning sketches and a rough CAD design into a working prototype.

Behboodi established his startup, Elasthetics, LLC, in 2019. Through Horn’s Venture Development Center, Behboodi has access to training, consultants, mentors and support to help him think beyond the laboratory and into the real world to get his business off the ground.

A key component of successfully translating basic scientific research into a practical product is knowing what customers want. Behboodi has talked with over 170 surgeons, orthotists, therapists, parents and children living with CP about what matters most in an orthotic device, through funding from the National Science Foundation’s I-Corps program.

Function and freedom

While therapists wanted a smarter device with modular components to provide individualized assistance to each child, parents were eager for something comfortable that would allow children to move more freely while keeping the ankle and foot stable. They wanted breathable materials, too, to reduce the heat accumulation that is common in traditional orthotics composed of rigid plastic. Extra heat combined with rigid materials can lead to excess moisture, skin blisters and other irritations that parents would rather avoid. Children wanted designs that were less conspicuous and would allow them to wear regular kicks like their peers rather than having to settle for unattractive oversized shoes that accommodate the brace, but make walking even more cumbersome.

“Bringing advanced technology to market for such a small segment of the population is difficult, making solutions expensive to produce and costly for parents to purchase, often with little-to-no insurance support,” said Behboodi.

Back on UD’s STAR Campus, Behboodi focused on optimizing the device’s design. He consulted with colleagues Martha Hall on textiles and functional design and Elisa Arch on orthotics. The result is a streamlined device with fewer artificial muscles to keep the price and bulk of the device down, while allowing for more motion without compromising performance. A garment now houses the electrical components and the artificial muscle to protect the user’s skin while keeping the artificial muscle aligned with the lower leg. With each iteration, Behboodi keeps an eye on affordability to make sure that cost remains within reach for patients and their families.

The product idea earned the “Most Innovative Rehabilitation Solution” award at the 2019 American Conference of Rehabilitative Medicine.

In February, Elasthetics began testing the prototype in the lab and collecting data to further refine the design. Behboodi and his collaborators plan to create multiple prototypes and subsequently seek approval to have therapists test the devices with actual patients in a clinical setting. Further down the line, there will be manufacturing concerns and FDA clearances to consider.

Going from prototype to product is a long process, but Behboodi is an entrepreneur who meets each new challenge cheerfully. He wants to see his orthotic device on children running around a backyard, not collecting dust on a shelf in a laboratory.

“The sooner you have something that kids can actually wear and break, the sooner you can improve the product. If you wait for the perfect design, you’ll never translate anything to the marketplace,” said Behboodi.

ABOVE: Ahad Behboodi’s promising robotic ankle device, which aims to help children with cerebral palsy move more freely, earned the “Most Innovative Rehabilitation Solution” award at the 2019 American Conference of Rehabilitative Medicine. Pre-pandemic photo by Evan Krape