Not only have advances in medicine allowed humans to live far longer than in centuries past, but the longer life-spans have resulted in a significant need for there to be appropriate methods for caring for individuals in the home during a period of invalidly or sickness. From complex machinery that might require the aid of a nurse or medical professional to home blood pressure monitors that may be used by someone trained in medicine but not officially licensed, there are many options for medical machines in the home that can help to keep a person comfortable in their own home rather than an uncomfortable hospital.