Profile: Koken Co., Ltd. deals with medical plastics, medical-use collagen products, skin-care products, and medical & educational equipment, including life simulation models. Our product categories are tracheal cannula, ENT products, surgery and dentistry. Our Koken NeoBreath single-tube type tracheal cannula is equipped with an inner cylinder so that the cannula can be easily cleaned. It includes lumen to aspirate fluid deposited on the cuff. It has an even pipe surface that minimizes irritation to the opening of the tracheotomy or tracheal mucosa. Our TD Plunger is specially designed for the systemic insertion of tympanic drain type C. Its design is based on ingenious human engineering and provides stable operation. It is particularly suitable for pediatrics.