Hufnagel Leaflet Valve

Description (Brief)
This single heart leaflet or cusp was used to replace or supplement a compromised natural leaflet. One, two or three leaflets could be surgically implanted. The leaflets were made of polypropylene mesh and impregnated with silicone rubber. Charles A. Hufnagel, MD, the inventor believed polypropylene leaflets would be a better design solution than the ball and cage model because it provided better dynamics. He acknowledged that only a few of these leaflets worked well, "those leaflets were the only leaflets, I think, that really lasted for any significant length of time." The single leaflets were later used to develop a trileaflet valve which looked similar to a natural human valve.
Dr. Charles Hufnagel, (1916-1989) graduated in 1941 from Harvard Medical School. While a resident at Boston’ Children’s Hospital he worked with pioneer cardiac surgeon Dr. Robert Gross. In 1950 he left the Peter Bent Brigham Hospital in Boston to becoame the Director of Georgetown University Medical Research laboratory. In September 1952, he implanted the first artificial heart valve which consisted of a ball of plastic inside a chambered tube. Hufnagel also made significant contributions to the development of the modern heart-lung machine.
Location
Currently not on view
Object Name
cardiology
artificial heart valve
artificial heart leaflet
date made
ca 1960
maker
Brunswick Manufacturing Company
Physical Description
polypropylene mesh (valve material)
silicone rubber (valve material)
Measurements
valve: 2.3 cm x 3.1 cm; 29/32 in x 1 7/32 in
place made
United States: Massachusetts, Quincy
ID Number
2015.0031.08
catalog number
2015.0031.08
accession number
2015.0031
subject
Cardiology
Prosthesis
Health & Medicine
Artificial Heart Valves
Artificial Organs
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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