Max Robotics — Global Service Robot Directory + US Certification

About

Kazuhisa Ehara is a leading figure in the advancement of minimally invasive surgery for gastric cancer, with a primary research focus on comparing the clinical efficacy of robot-assisted gastrectomy (RG) against traditional laparoscopic gastrectomy (LG). His most impactful contribution is a landmark 2018 multi-institutional prospective single-arm study, cited over 230 times, which demonstrated the clinical advantages of robotic gastrectomy for stage I/II gastric cancer, establishing a strong evidence base for its adoption. Building on this, Ehara is the principal investigator of the groundbreaking MONA LISA study (JCOG1907), a randomized controlled phase III trial designed to definitively prove the superiority of RG over LG for a broader range of clinical stages (T1-4aN0-3). This high-impact protocol paper, published in 2023, outlines a rigorous investigation into whether the articulated instruments and enhanced spatial perception of robotic systems can overcome the inherent drawbacks of laparoscopy, such as motion restriction. Through this work, Ehara is at the forefront of shaping the next standard of care in gastric cancer surgery, directly influencing surgical practice and patient outcomes worldwide.