You might be surprised to realize that many applications of medical devices are not used for affirmative life support and therefore should not be held to the same standards as aviation.<p>This application (cath lab activity logging) is not a life-support activity.  Product failures of any kind (either due to design error or product defect) represent a diminished capability of diagnosis and treatment.  This does not represent a risk of harm to a patient.<p>That said, some medical device manufacturers treat this aspect of design very seriously and go to great pains to use defeatured and heavily restricted OS and settings.