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Home NEWS Science News Health

Robots created with 3D printers could be caring for those in golden years

Bioengineer by Bioengineer
April 8, 2019
in Health
Reading Time: 3 mins read
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New design method to create soft robots

IMAGE

Credit: Ramses Martinez/Purdue University

WEST LAFAYETTE, Ind. – The world’s elderly population is booming. The number of older people — those age 60 years or older — is expected to more than double by 2050 and is growing faster than all younger age groups across the globe.

This trend comes with an increasing demand for caregivers capable of providing 24-hour care, not only at hospitals or nursing homes, but also at private homes and apartments.

Already, caregiving robots are programmed to ask questions a nurse would ask and can monitor patients for falls. These robotic assistants are expected to become increasingly marketable and reach 450,000 by 2045 because of the expected caregiver shortage in the United States.

“Unfortunately, the external hard structure of current caregiving robots prevents them from a safe human-robot interaction, limiting their assistance to mere social interaction and not physical interaction,” said Ramses Martinez, an assistant professor in the School of Industrial Engineering and in the Weldon School of Biomedical Engineering in Purdue’s College of Engineering. “After all, would you leave babies or physically or cognitively impaired old people in the hands of a robot?”

Recent advances in material science have enabled the fabrication of robots with deformable bodies or the ability to reshape when touched, but the complex design, fabrication, and control of soft robots currently hinders the commercialization of this technology and its use for at-home applications.

Martinez and other Purdue University researchers have developed a new design method that shows promise in enabling the efficient design and fabrication of soft robots using a 3D printer. The technology is published in the April 8 edition of Advanced Functional Materials. A video showing the technology is available at https://www.youtube.com/watch?v=nDpzuLbtzDM.

The design process involves three steps. First, a user makes a computer-aided design file with the shape of the robot. The user then paints the CAD file to show which directions the different joints of the soft robot will move. A fast computer algorithm takes a few seconds to convert the CAD model into a 3D architected soft machine (ASM) that can be printed using any conventional 3D printer.

The architected soft machines move like humans, except instead of muscles they rely on miniaturized motors that pull from nylon lines tied to the ends of their limbs. They can be squeezed and stretched to more than 900 percent of their original length. A video is available at https://www.youtube.com/watch?v=V0L0lP0g4tg.

“ASMs can perform complex motions such as gripping or crawling with ease, and this work constitutes a step forward toward the development of autonomous and lightweight soft robots,” Martinez said. “The capability of ASMs to change their body configuration and gait to adapt to a wide variety of environments has the potential to not only improve caregiving but also disaster-response robotics.”

A video is available at https://www.youtube.com/watch?v=q9M4q9OQhQE and more videos can be found on the research team’s YouTube channel.

The technology is patented through the Purdue Office of Technology Commercialization. The researchers are looking for partners to test and commercialize their technology.

Their work aligns with Purdue’s Giant Leaps celebration, acknowledging the university’s global advancements in artificial intelligence and health as part of Purdue’s 150th anniversary. Those are two of the four themes of the yearlong celebration’s Ideas Festival, designed to showcase Purdue as an intellectual center solving real-world issues.

###

About Purdue Research Foundation Office of Technology Commercialization

The Office of Technology Commercialization operates one of the most comprehensive technology transfer programs among leading research universities in the U.S. Services provided by this office support the economic development initiatives of Purdue University and benefit the university’s academic activities. The office is managed by the Purdue Research Foundation, which received the 2016 Innovation and Economic Prosperity Universities Award for Innovation from the Association of Public and Land-grant Universities. For more information about funding and investment opportunities in startups based on a Purdue innovation, contact the Purdue Foundry at [email protected]. For more information on licensing a Purdue innovation, contact the Office of Technology Commercialization at [email protected]. The Purdue Research Foundation is a private, nonprofit foundation created to advance the mission of Purdue University.

Writer:Chris Adam, 765-588-3341, [email protected]

Source: Ramses Martinez, [email protected]

Media Contact
Chris Adam
[email protected]

Related Journal Article

http://dx.doi.org/10.1002/adfm.201808713

Tags: AgingBiomedical/Environmental/Chemical EngineeringHealth Care Systems/ServicesHealth ProfessionalsIndustrial Engineering/ChemistryMedicine/HealthRobotry/Artificial IntelligenceTechnology TransferTechnology/Engineering/Computer ScienceWeaponry
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