Biomedical

It's common that engineers can do anything except doing a doctor's job, but science and technology are giving us this opportunity.

Biomedical engineering is the field that applies engineering skills and principles to biology and medicine, for the purpose of health care.
It focuses on advancements that improve our health, from diagnosis and analysis of the medical condition to the treatment. For example, you have to make sure that the materials of an artificial organ don't cause an unwanted reaction inside the body so the artificial limb moves in similar ways to its organic country part.

The most common applications of it are; pacemakers, defibrillators, MRI, CT scans, insulin pump, and X-rays.
To sum up, biomedical engineering is a mixture of biology, industrial engineering, programming and computer science.
So do you know another application that we already use every day?