Bokros Carbomedics On-X Bileaflet Valve

Description (Brief)
The Bokros Carbomedics On-X Bileaflet Valve was developed by Dr. Jack Bokros PhD, a nuclear engineer in collaboration with Dr. Vincent Gott, a pioneering cardiac surgeon who spent thirty-five years training surgeons at Johns Hopkins University School of Medicine. Together Bokros and Gott pioneered the use of pyrolytic carbon in the development of artificial valves.
Pyrolytic carbon quickly became the 'gold standard' in the manufacture of heart valves, and today remains the most accepted material for the construction of mechanical prosthesis. Although valves utilizing carbon still require anticoagulation therapy for prevention of thrombosis its strengths, highly biocompatible, pure carbon surface create an ability to reduce turbulence to the blood and increases blood flow. .
Gott later became involved with the development of the first all-carbon bi-leaflet valve, the St. Jude artificial heart valve. Bokros went on to establish Carbomedics Incorporated and On-X Life Technologies. In the 1990s, his company was responsible for fabricating pyrolyte for more than 2 million valves, worldwide.
Currently not on view
Object Name
artificial heart valve
date made
after 1996
year model introduced
Physical Description
pyrolytic carbon (overall material)
cloth (overall material)
overall: 1.2 cm x 2.5 cm; 15/32 in x 31/32 in
place made
United States: Texas, Austin
ID Number
catalog number
accession number
Artificial Organs
See more items in
Medicine and Science: Medicine
Artificial Heart Valves
Health & Medicine
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Manuel Villafaña
Additional Media

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