In this paper, we describe the development of RT-Components for Personal Health Devices using the RT-Middleware implementation, OpenRTM-aist. In order to improve the quality of life in our homes coupled with high life demands and a quickly aging society, personal health devices will play an important role in ensuring that people continuously monitor their health and also take control of their own health by incorporating fitness activities in their daily life. OpenRTM-aist has been used as the implementation architecture.