While medical instruments have benefited a great deal from the technological advances of the couple of decades, many practices and day-to-day activities in medical environments remain virtually unchanged. The process of penetrating IT advancements in the medical profession continues to be a very challenging problem. This is mainly due to concerns about security and reliability of new technologies. In general, sensitive applications, such as in the medical domain, have always resisting to adopting a new technology. However, healthcare can benefit significantly from incorporating various new developments, particularly wireless technologies. In this paper, we propose a secure and robust network infrastructure for critical medical applications and discuss the solutions to a number of problems related how to employ a wireless technology to solve problems in the medical domains.