Gott-Daggett Heart Valve
date: label: date made
content: after 1964
name: label: maker
content: Daggett, Dr. Ronald L.
label: maker
content: Gott, Dr. Vincent L.
notes: label: Description
content: 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.
label: Description
content: 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.
label: Description
content: 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.
label: Description
content: 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.
label: Description
content: 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."
label: Location
content: Currently not on view
place: label: place made
content: United States: Maryland, Baltimore
topic: label: Subject
content: Prosthesis
label: Subject
content: Artificial Organs
label: Subject
content: Cardiology
setName: label: See more items in
content: Medicine and Science: Medicine
label: See more items in
content: Health & Medicine
label: See more items in
content: Artificial Heart Valves
creditLine: label: Credit Line
content: Gift of Manuel Villafaña
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2015.0031.42
label: catalog number
content: 2015.0031.42
label: accession number
content: 2015.0031
objectType: label: Object Name
content: cardiology
label: Object Name
content: artificial heart valve
physicalDescription: label: Physical Description
content: styrofoam (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: teflon mesh (overall material)
label: Physical Description
content: silicone rubber (overall material)
label: Physical Description
content: polycarbonate (overall material)
label: Measurements
content: overall: 1 cm x 3.2 cm x 3.2 cm; 13/32 in x 1 1/4 in x 1 1/4 in