I have said it over and over again: the healthcare market is one cow ready to be milked. Market Forces like an aging population, health care economics/politics (more and more laws regard the prevention of disease – preventative management), acute need for highly trained specialists and care takers, consumerism drive, increasing demand for portability, ease of use, targeted use, miniaturization and a confusing regulatory pathway shape it into a profitable yet difficult market.
As far device technology goes, the importance of interoperability cannot be stressed enough while the limitations of batteries drive innovation into specific target areas. Wireless is becoming ubiquitous under these considerations (e.g., Bluetooth Health Device Profile) and low energy consumption is also becoming an ardent issue with research into LPR (Low Power Radio) e.g. Zigbee Healthcare and Bluetooth LE. Flexible platforms systems and auto managed power technologies together with and increased RF traffic challenge the tasks of designers.