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About

Kei Nakagawa is a researcher whose work spans two remarkably distinct yet equally impactful domains: rehabilitative robotics and hepatobiliary surgery. In the field of assistive technology, Nakagawa has made significant contributions to the development of wearable walking assistive robots, most notably the RE-Gait device, a close-fitting ankle assistive robot designed to promote gait rehabilitation in elderly and stroke-affected populations. His investigations into spinal cord reciprocal inhibition, intramuscular coherence, and adaptive robotic ankle control have advanced our understanding of how assistive devices can optimize neuromuscular function throughout the entire gait cycle. His most-cited work in this area has accumulated over 20 citations, reflecting growing interest in accessible rehabilitation technology. Parallel to this, Nakagawa has contributed meaningfully to minimally invasive surgical techniques for congenital biliary dilatation, publishing early experience with robotic surgery for bile duct conditions and demonstrating favorable short-term outcomes. His 2025 review of biliary tract cancer treatment strategies further underscores his breadth within hepatobiliary medicine. With a cumulative citation profile exceeding 65 references across both disciplines, Nakagawa represents a rare interdisciplinary voice bridging surgical innovation and rehabilitative engineering, making his work particularly valuable for researchers navigating aging-related healthcare challenges.