Home medical devices are typically designed for use in uncontrolled general use environments such as the home, school, office, transportation (except for first aid), outdoors (not in the field, where the environment should be relatively stable), and public **** places. A wide range of home medical devices include, but are not limited to, products such as blood pressure monitors, blood glucose meters, oxygen concentrators, nebulizers, and nursing beds. These medical devices are typically designed to facilitate self-diagnosis, prevention and treatment by the user.