A new miniature rose plant which has abundant, red flowers and attractive foliage. In this invention, a mixture solution is prepared by adding water to a methanol solution after saponifying an ethylene-vinyl acetate copolymer, and insoluble materials are removed from this mixture solution. This device allows for simultaneous detection of electrical and mechanical cardio-vascular activities of a patient which can be used in an easy and reliable way and which allow for implementation in a hand-held or wearable device.