Abstract
Clinical application number of ventricular assist devices (VAD) started to arise from around the year 2005 after very long period having not more than 100 cases per year and finally there are more than 5000 cases per year in these days with rapid growth rate. So the VAD market is now recognized as one of most promising medical device market. Two Japanese companies have successfully launched their VADs in Japan on Apr 2011, but they have struggled in the highly competitive global VAD market because the market is divided between two US companies, Thoratec and HeartWare. In this paper technical points that made them successful is presented using related patent applications and future technology development trend in VAD is discussed.
