Japan Develops Robotic Tail to Help Elderly Maintain Balance
Researchers in Japan have introduced a groundbreaking wearable device aimed at improving balance in older adults. The innovation, known as Arque, is a robotic tail inspired by how animals use their tails to stay stable.
Developed at Keio University, the robotic balance tail attaches to the user’s waist using a lightweight harness. It measures about one meter in length and works like a pendulum. As a result, it helps counter sudden body movements that could lead to falls.
According to the research team, maintaining balance becomes harder with age. Therefore, Arque focuses on providing gentle, automatic support without restricting natural movement.
How the Robotic Tail Works
When a user leans or tilts, the robotic balance tail moves in the opposite direction. This motion helps restore stability in real time. Researcher Junichi Nabeshima explained that the system reacts instantly to shifts in posture.
The device uses four artificial muscles powered by compressed air. In addition, it can move in eight different directions, allowing it to respond to various balance challenges. The design keeps the system flexible while remaining strong enough to assist users safely.
Importantly, the tail works automatically. Users do not need training or manual controls, which makes it accessible for elderly individuals.
Beyond Elderly Care
While Arque targets fall prevention, its potential goes further. The research team is also testing industrial uses. For example, workers carrying heavy loads could benefit from extra balance support in risky environments.
As populations age worldwide, solutions like the robotic balance tail may play a key role in improving quality of life. Moreover, wearable robotics could reduce injury risks and healthcare costs over time.
Although Arque is still in testing, researchers believe it represents a promising step toward safer, more supportive wearable technology.
