Gott-Daggett Heart Valve

Description
The Gott-Daggett heart valve is a hinged bileaflet prosthesis developed by Dr. Vincent Gott, MD of Johns Hopkins University and Dr. Ronald Daggett, PhD. It has a central cross strut and prongs projecting inwards from base ring. Also called "butterfly valve," it was to be used for both mitral and aortic replacement. It has a very low profile and was first used in August 1964. It is made of polycarbonate plastic impregnated with colloidal graphite. The suture ring is made of Styrofoam, and the leaflet is heavy Teflon mesh impregnated with silicone rubber, or Dacron reinforced silicone rubber. The valve was manufactured by Daggett. Some problems included thromboembolism and hemolysis. Clotting did occur, but extended survival with this prosthesis has been reported.
Dr. Vincent Gott, MD (b. 1926) received his medical degree from Yale University. He then interned at the University of Minnesota Hospital in 1954 with Dr. C. Walton Lillehei.
While a research fellow in Lillehei’s laboratory (1956- 1957) he helped to develop the first practical pacemaker, and observed Lillehei's first cross-circulation case.
Gott trained with Christiaan Barnard of Cape Town and stopped operating at 67 years of age, after having been professor and surgeon at Johns Hopkins. Ronald Daggett (1916-2004) was a professor of Plastic Engineering at the University of Wisconsin, Madison.
In an interview donor Manuel “Manny” Villafaña said "he used principles that were totally against everything we knew about valves. He used plastic, not metal. He took the plastic and he painted it with a brush and paint, black paint made out of carbon. He painted every surface 'cause carbon is less thrombogenic than metal...everything you know about valves is contrary to this one. Then the most amazing thing is that they implanted 432 of these and some of them lasted 25 years."
Location
Currently not on view
Object Name
cardiology
artificial heart valve
date made
after 1964
maker
Daggett, Dr. Ronald L.
Gott, Dr. Vincent L.
Physical Description
styrofoam (overall material)
plastic (overall material)
teflon mesh (overall material)
silicone rubber (overall material)
polycarbonate (overall material)
Measurements
overall: 1 cm x 3.2 cm x 3.2 cm; 13/32 in x 1 1/4 in x 1 1/4 in
place made
United States: Maryland, Baltimore
ID Number
2015.0031.42
catalog number
2015.0031.42
accession number
2015.0031
subject
Health & Medicine
Prosthesis
Artificial Heart Valves
Artificial Organs
Cardiology
See more items in
Medicine and Science: Medicine
Artificial Heart Valves
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of Manuel Villafaña
Additional Media

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