The main aspect of the Biomedical Engineering field is the ability to develop technologies such as prosthetic limbs or organs, even pacemakers and others of the sort. These developments continue to improve with ongoing research.
Professor John Collier designed the first successful porous coated femoral hip prosthesis used in the U.S. Fabricated from cobalt and titanium alloys, the coating allows bone to grow into the device to secure it in place. A modern adjustable version of the prosthesis is still in use.