Novel device acts as a cane-like mobile assistant to provide light-touch to assist the elderly and others with impaired mobility. The findings of the study are published in the journal IEEE Robotics and Automation Letters.
A team led by Sunil Agrawal, professor of mechanical engineering and of rehabilitation and regenerative medicine at Columbia Engineering, has demonstrated, for the first time, the benefit of using an autonomous robot that "walks" alongside a person to provide light-touch support, much as one might lightly touch a companion's arm or sleeve to maintain balance while walking.
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‘New light-touch robotic device, called CANINE, acts as a cane-like mobile assistant and improves the individual's self-awareness in space, during walking, which in turn promotes stability and balance.
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"Often, elderly people benefit from light hand-holding for support," explained Agrawal, who is also a member of Columbia University's Data Science Institute. "We have developed a robotic cane attached to a mobile robot that automatically tracks a walking person and moves alongside" he continued.
"The subjects walk on a mat instrumented with sensors while the mat records step length and walking rhythm, essentially space and time parameters of walking, so that we can analyze a person's gait and the effects of light touch on it."
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The light-touch robotic cane, called CANINE, acts as a cane-like mobile assistant. The device improves the individual's proprioception, or self-awareness in space, during walking, which in turn improves stability and balance.
"This is a novel approach to providing assistance and feedback for individuals as they navigate their environment," said Joel Stein, Simon Baruch Professor of Physical Medicine and Rehabilitation and chair of the department of rehabilitation and regenerative medicine at Columbia University Irving Medical Center, who co-authored the study with Agrawal. "This strategy has potential applications for a variety of conditions, especially individuals with gait disorders."
To test this new device, the team fitted 12 healthy young people with virtual reality glasses that created a visual environment that shakes around the user both side-to-side and forward-backward to unbalance their walking gait. The subjects each walked ten laps on the instrumented mat, both with and without the robotic cane, in conditions that tested walking with these visual perturbations. In all virtual environments, having the light-touch support of the robotic cane caused all subjects to narrow their strides. The narrower strides, which represent a decrease in the base of support and a smaller oscillation of the center of mass, indicate an increase in gait stability due to the light-touch contact.
"The next phase in our research will be to test this device on elderly individuals and those with balance and gait deficits to study how the robotic cane can improve their gait," said Agrawal, who directs the Robotics and Rehabilitation (ROAR) Laboratory. "In addition, we will conduct new experiments with healthy individuals, where we will perturb their head-neck motion in addition to their vision to simulate vestibular deficits in people."
While mobility impairments affect 4% of people aged 18 to 49, this number rises to 35% of those aged 75 to 80 years, diminishing self-sufficiency, independence, and quality of life. By 2050, it is estimated that there will be only five young people for every old person, as compared with seven or eight today.
"We will need other avenues of support for an aging population," Agrawal noted. "This is one technology that has the potential to fill the gap in care fairly inexpensively."
Source: Eurekalert
Soft Robot Sans Batteries and Circuits to Revolutionize Medicine
Harvard University scientists develop soft robot that have no batteries or circuits and run on hydrogen peroxide as fuel, revolutionizing medicine.
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The light-touch robotic cane, called CANINE, acts as a cane-like mobile assistant. The device improves the individual's proprioception, or self-awareness in space, during walking, which in turn improves stability and balance.
"This is a novel approach to providing assistance and feedback for individuals as they navigate their environment," said Joel Stein, Simon Baruch Professor of Physical Medicine and Rehabilitation and chair of the department of rehabilitation and regenerative medicine at Columbia University Irving Medical Center, who co-authored the study with Agrawal. "This strategy has potential applications for a variety of conditions, especially individuals with gait disorders."
To test this new device, the team fitted 12 healthy young people with virtual reality glasses that created a visual environment that shakes around the user both side-to-side and forward-backward to unbalance their walking gait. The subjects each walked ten laps on the instrumented mat, both with and without the robotic cane, in conditions that tested walking with these visual perturbations. In all virtual environments, having the light-touch support of the robotic cane caused all subjects to narrow their strides. The narrower strides, which represent a decrease in the base of support and a smaller oscillation of the center of mass, indicate an increase in gait stability due to the light-touch contact.
"The next phase in our research will be to test this device on elderly individuals and those with balance and gait deficits to study how the robotic cane can improve their gait," said Agrawal, who directs the Robotics and Rehabilitation (ROAR) Laboratory. "In addition, we will conduct new experiments with healthy individuals, where we will perturb their head-neck motion in addition to their vision to simulate vestibular deficits in people."
While mobility impairments affect 4% of people aged 18 to 49, this number rises to 35% of those aged 75 to 80 years, diminishing self-sufficiency, independence, and quality of life. By 2050, it is estimated that there will be only five young people for every old person, as compared with seven or eight today.
"We will need other avenues of support for an aging population," Agrawal noted. "This is one technology that has the potential to fill the gap in care fairly inexpensively."
Source: Eurekalert
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