21st Century Center of Excellence (COE) Program Graduate School of Medicine, Keio University
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Development of Minimally Invasive and Innovative Therapeutic MethodsJapanese Site
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Program member
Program member
Ryohei Yozu
Ryohei Yozu
Affiliation Professor,
Department of Surgery, Graduate School of Medicine,
Keio University
  Research activities in the COE program
  Minimally invasive cardiac surgery: Experience of Port-Access Cardiac Surgery

We have conducted cardiac surgery using the first 'port-access method' in Japan. It is a less stressful and less-invasive technological innovation in the field of open cardiac surgery without sternotomy. We have performed many cases and have achieved significant results.
We received a grant-in-aid for scientific research from the Japan Science and Technology Agency from 2000 to 2003, and developed a new original catheter for injection of cardioplegia and aortic vent and introduced it to the world.
More than 130 patients who have undergone the port-access operation, which is minimally invasive surgery, were able to be discharged within a week after their operation.
Utilizing a new computer technique, totally endoscopic open-heart procedures with robotic-assistance were developed and we performed the first successful robotic cardiac surgery in coronary artery bypass grafting and mitral valve repair in Asia.
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