Around 1963, adverse reactions due to transfusions frequently occurred in medical care settings in Japan. Dr. Taro Tsuchiya, a PhD in medicine for his thesis on conserved blood, conducted unique investigational research into the adverse reactions, and determined that the cause was the reuse of transfusion sets. To provide solutions by promoting the use of disposable products in accordance with such practice in the United States, he established a company that markets disposable medical devices. That is how JMS started.