Jyros Bileaflet Heart Valve
date: label: date made
content: ca 1992
notes: label: Description (Brief)
content: The Jyros Bileaflet Heart Valve has a hinge that rotates inside the housing/valve ring. In one study, those who received the implant showed no signs of hinge rotation. Over all the valve had good clinical results, but there were some incidences of thrombosis. It has two pyrolytic carbon leaflets (impregnated with Boron carbide) within carbon housing. In 1992, 100 valves were implanted in patients 33 to 80 years old. 92 patients left the hospital. At that time there were no instances of thromboembolic events. The idea behind rotating hinges is that lack of stasis would mean a lesser likelihood of thromboembolism. In another study of 19 patients, only 50% of valves showed rotation of the leaflets. It was decided that the performance of the valve was successful, irrespective of whether or not the leaflets rotate.
label: Description (Brief)
content: In Russia, the valve was named "Carbonix-1" and was clinically used beginning in 1988. In 1990, the valve was first used in the United States under the trademark, "Jyros." The development of artificial heart valves took place in many countries around the world, and there were many international collaborations.
label: Location
content: Currently not on view
place: label: place made
content: Russia
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
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content: Health & Medicine
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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: 2015.0031.52
label: catalog number
content: 2015.0031.52
label: accession number
content: 2015.0031
objectType: label: Object Name
content: cardiology
label: Object Name
content: artificial heart valve
physicalDescription: label: Physical Description
content: pyrolytic carbon (overall material)
label: Physical Description
content: cloth (overall material)
label: Measurements
content: overall: .9 cm x 3.6 cm; 11/32 in x 1 13/32 in