For people with spinal cord injuries/diseases (SCI/D), performing daily work can be a challenge due to a weakened ability to understand and handle objects with their hands.
Researchers at the University of Cincinnati, in collaboration with the final users of the community, received a grant of $ 200,000 from paralyzed US veterans (PVA) to design a user -focused device and easy to use auxiliary device to help restore the hand.
Study background
UC Derek Wolf, PhD, a major researcher in the project, said that biomedical engineers have developed many extraterrestrial – robotic devices worn above the user’s hand – to help with the catch. These devices often work well in the laboratory settings, but few end users adopt manual exosters and wear them in real long -term settings.
We make these really cool devices, but they don’t get to the next step for any number of reasons. What we are trying to do with this project includes end users and focuses on the actual creation of a device that will translate beyond the lab. ”
Derek Wolf, Assistant Professor, Department of Engineering and Engineering, College of Engineering and Applied Sciences of UC
The research team aims to combine an exoskeletal device with another technology called functional electrical stimulation (FES) that manages electricity through a paralyzed muscle to get the muscle to contract.
“If you put an exo in someone’s hand, you don’t really take advantage of the hand that exists. The muscles of the arms that are there,” Wolf said. “There is an efficiency gap when you only throw an exo. We can use these muscles to create strength or movement.”
The Wolf background includes expertise on FES and incorporates it into hybrid systems. While the goal is ultimately to fully integrate the Fes with a motorized extracurricular, this project will first try to combine the Fes with a passive extruding that cannot be moved on its own.
“The Fes can be difficult to control and get a fine engine control, so our hope is to use the exo over it to facilitate control while the drive is still driven by the Fes,” Wolf explained. “So if the Fes causes a finger to move, the exo is going to move with it and get a nice understanding.”
Wolf said that the big obstacles include creating user -friendly interpersonal interpersonal and simple for a popular person to work, the devices are cumbersome for users to quickly put themselves and take off and the fact that each person’s injury and needs are unique.
“Creating a device that helps many people, but also able to help a person is a real challenge,” he said. “Our hope is that, including users all over. We can really do that.”
In view of the end user
As members of the two -year research team, supporters of Sarah Elam and Dave Reed will provide information on their needs and prototypes and new designs so that the finished product can be useful and functional for end users such as themselves.
“Professor Wolf told me,” You can’t simulate disability, “said Elam, 48, who has multiple sclerosis and is quadriplegic with limited use of the non -dominant left hand.” This is not something they can do using something else.
Reed, 71, a retired UPS driver, has recovered the partial movement of his hands and feet and uses a wheelchair of power after a spinal cord C3 injury.
“I said yes to the project because I thought it would help other people like me and thought it would be interesting, in a mental health, to participate in something bigger than myself,” Reed said. “I always liked science. I thought it would be good to participate in a kind of science and I really look forward to doing that.”
Reed said that the research could help him with tasks such as the direction of his disability and the signature of his name. Elam noted that even in the early stages of the project, it was exciting to make progress as a team.
“At our first session, we were just working to get objects and take and hold a container and move a box,” he said. “But there is excitement around – oh, sacred crap, which worked the way we wanted!”
Wolf said engineers can often be trapped in a mechanical challenge or great idea that they believe will help users, but at the end of the project their innovations have no real problems.
“I am very excited to be able to join Sarah and Dave, teach me and teach students in the lab how we really solve the things that people are interested in,” Wolf said. “My hope is that the two supporters end up developing a relationship with us and staying with us in the long run – where they guide the next project and the next project and that every work we do is based on their needs and on what they understand the needs of the community to be.”
Student experience
Ryan Cuda, a student who follows his doctorate in engineering, will lead to much of the daily design aspects of the project and said he is envisioned to work in projects like this when he weighs postgraduate programs.
“I chose the UC because it offers great opportunities to work in industrial and possession of the Medical School is a huge advantage for cooperation and research,” he said. “In many schools and many research programs, you do the project, but you never see it leading to real change.
The collaboration with the comments and needs of Reed and Elam, Cuda and the rest of the team are currently planning the first original exoskeleton.
“From there, we work in a two -month sprint: designing an original, gathering feedback from users, refining the design and repeating the process to continue to improve with every repetition,” Cuda said.
Working on a PVA grant is personal for Cuda, which comes from a military family and planned to join the army itself before a hand injury derailed his plans.
“I understand the type of support veterans and the members of the service they really need and I constantly hear about the gaps they face in the care they face,” Cuda said. “My grandfather was a member of the veterans of foreign wars, and after working closely with PVA, it makes sense for the full cycle to come and contribute to the same mission.”
