If you follow the world of robotic exoskeletons with any frequency, you’re no doubt aware of the two main categories. The former is consistently aimed at workers with strenuous or repetitive tasks such as lifting and carrying packages. The second is supportive, largely focused on people with mobility issues.
The latter category is often the domain of soft robotic exoskeletons – those with fabric parts designed to be more of an everyday accessory. These systems are also increasingly focused on specific issues that affect people’s ability to move. After all, not all mobility disabilities are created equal.
In the case of people with Parkinson’s disease, “freezing” is a common issue that affects the ability to walk, while increasing the likelihood of falls. The symptom causes people to lose their footing while walking, shortening their steps before stopping completely,
There have been several attempts to address the issue, from medication to physical therapy to surgery, but existing solutions are limited in their effectiveness.
New research from a joint team from Harvard and Boston University, published in Nature Medicineshows how soft robotic exoskeletons can address the problem.
Wearable technology has sensors that detect movement and use algorithms to estimate the walker’s gait. Wired actuators come in, assisting mid-stride walking.
“We found that just a little mechanical assistance from our soft robotic garments provided immediate results and consistently improved walking across a range of conditions for the subject in our study,” says Harvard professor Conor Walsh.
The researchers worked with a 73-year-old man with Parkinson’s who suffers from frostbite more than 10 times a day. In their research, which was conducted over a period of six months, Walsh’s team was able to eliminate frostbite in patients while walking indoors. In turn, they could also walk farther and faster.
Harvard notes, “The effect was instantaneous. Without any special training, the patient was able to walk without freezing indoors and with only occasional episodes outdoors. He was also able to walk and talk without freezing, something rare without the device.”
Biodesign Lab is the same team that designed a suit for stroke patients, which was then licensed by the startup, ReWalk Robotics. If the promising early results are any indication, this new technology could one day retrace its steps toward commercialization.
