Hufnagel Tri-Leaflet Aortic Heart Valve
date: label: date made
content: after 1967
name: label: distributor
content: Codman & Shurtleff, Inc.
notes: label: Description (Brief)
content: 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.
label: Location
content: Currently not on view
topic: label: Subject
content: Cardiology
label: Subject
content: Prosthesis
label: Subject
content: Artificial Organs
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: 2015.0031.11
label: catalog number
content: 2015.0031.11
label: accession number
content: 2015.0031
label: serial number
content: 850
objectType: label: Object Name
content: cardiology
label: Object Name
content: artificial heart valve
physicalDescription: label: Physical Description
content: plastic (container material)
label: Physical Description
content: polypropylene mesh (valve material)
label: Physical Description
content: silicone rubber (valve material)
label: Measurements
content: 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
label: Measurements
content: valve: 2 cm x 3 cm; 25/32 in x 1 3/16 in