Hufnagel Tri-Leaflet Aortic Heart Valve

Description (Brief)
This trileaflet valve which looks similar to a natural human heart valve was developed by Charles Hufnagel, MD. It is coated in hepacone, silicone rubber impregnated with heparin, and is a size 5 with a diameter of 33mm. Hufnagel believed the trileaflet design would prove to be superior to the ball and cage heart valve because it provided better dynamics. The base of the valve was designed to fit the shape of the aorta when implanted. The leaflets or cusps were made of polypropylene and coated with silicone rubber at high pressure. A 1975 study of patients who had received this prostheses determined that the Hufnagel trileaflet valve was not durable enough to withstand constant blood flow. In a majority of cases, patients died due to prosthetic degeneration or thrombosis. Other problems included aortic regurgitation and stenosis. The Hufnagel tri-leaflet valve was distributed by Codman and Shurtleff, Inc. of Randolph, Massachusetts and manufactured by Heyer-Schulte Corporation.
Location
Currently not on view
Object Name
cardiology
artificial heart valve
date made
after 1967
distributor
Codman and Shurtleff Incorporated
Physical Description
plastic (container material)
polypropylene mesh (valve material)
silicone rubber (valve material)
Measurements
container: 3.2 cm x 5.4 cm x 5.4 cm; 1 1/4 in x 2 1/8 in x 2 1/8 in
valve: 2 cm x 3 cm; 25/32 in x 1 3/16 in
ID Number
2015.0031.11
catalog number
2015.0031.11
accession number
2015.0031
serial number
850
subject
Cardiology
Health & Medicine
Prosthesis
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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