Expectations for healthcare in modern life using digital technology are increasing every day. To support a more comprehensive approach, we are attempting to digitally model and replicate certain states and functions of the human body. In this talk, we will introduce our initial trials focusing on the heart’s electrical and mechanical activities. Our goal is not only to associate observations and diseases in an end-to-end manner, but also to estimate internal parameters such as action potentials of cells and individual vibration sources from external observations. We will also discuss possible applications for our approach, including early detection of diseases and rehabilitation after treatment.