Strategically positioned sensors on the foot, shank, and pelvis capture relevant data that is then processed using a machine-learning algorithm, offering insights into the wearer’s ability to generate appropriate ankle mechanics and walk efficiently. Image courtesy of Biodesign Lab / Harvard SEAS.
A new portable, flexible, and user-friendly ankle exosuit has been designed for autonomous usage and has the capacity to assist stroke survivors in enhancing their walking capabilities beyond laboratory settings and in their everyday routines. The ankle exosuit has been shown to aid stroke survivors in improving their walking propulsion, increasing overall confidence while ambulating, and enhancing their ability to navigate within their residences, workplaces, and neighborhoods. The research was spearheaded by Conor Walsh, PhD, and his team at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS).
The exosuit incorporates an actuator to assist in plantarflexion, propelling the foot and body away from the ground. A passive actuator, which behaves similarly to a spring, assists in dorsiflexion, keeping the wearer’s toes elevated during swing phase of the foot, thereby preventing them from catching their toes on the ground. A mobile application facilitates seamless interaction between the wearer and the exosuit while also enabling remote communication with the research team. The mobile app empowers wearers to independently activate the device and inform the exosuit when they are ready to begin walking.
Furthermore, the team integrated sensors into the exosuit to enable remote monitoring of the wearer’s progress throughout their rehabilitation journey. By collecting data while individuals walk with the exosuit, the team can track and analyze improvements in their gait over time. This information can contribute to a more comprehensive understanding of the wearer’s progress and facilitate a tailored and effective rehabilitation program.
