Medrad and its subsidiary Intec Systems, in collaboration with Michel Mirowski and Morton Mower, developed the world's first implantable cardioverter defibrillator or ICD.
[2] He came from a family of doctors, including his brother, Daniel, his father, Glenn, his grandfather, Uriah Oury Heilman, his Uncle Marlin and Aunt Rena.
[2][3] He later founded a company called Lifecor to commercialize another invention, a wearable automated external defibrillator in the form of a vest.
[4] Together with Mirowski and Mower through a company called Intec Systems, Heilman made the initial human automatic implantable defibrillator.
[5] In 2002, based on an ICD invention, Heilman, Langer, Mirowski and Mower were inducted into the United States Inventors Hall of Fame.