Hancock Mitral-Tricuspid Tissue Valve
date: label: date made
content: 1983-02
name: label: maker
content: Extracorporeal Medical Specialists Inc.
notes: label: Description (Brief)
content: Tissue valves such as this must be stored in a sealed liquid (formaldehyde) filled container until implantation.
label: Description (Brief)
content: Both porcine (pig) and bovine (cow) tissue are used to make xenograft (transplant from one species to another) valves. Porcine valves utilize the actual valve from the pig, whereas bovine valves are cow tissue that is manipulated into the shape of a valve.
label: Description (Brief)
content: The Hancock Mitral-Tricuspid is a porcine tissue valve, and has a pliable sewing ring. Advantages of having a tissue valve is that one need not take blood-thinner/anticoagulant medication after receiving the valve. For the majority of tissue valve patients, taking an aspirin a day is sufficient anticoagulation therapy. A disadvantage is that they are less durable and will need to be replaced within the patient's lifetime, typically 10 to 15 years, often less in younger patients. Because valve replacement surgery carries a significant risk of death, patient life expectancy is a major criterion in considering a tissue valve. Tissue valves can become hardened, or calcified, over time and there is a rare risk of tissue valve failure or infection.
label: Description (Brief)
content: This valve was manufactured by Extracorporeal Medical Specialties, Inc., which operates as a subsidiary of Johnson & Johnson.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Anaheim
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: 2015.0031.32
label: catalog number
content: 2015.0031.32
label: accession number
content: 2015.0031
label: model number
content: 342C
label: serial number
content: M133689
objectType: label: Object Name
content: cardiology
label: Object Name
content: artificial heart valve
physicalDescription: label: Physical Description
content: porcine (valve material)
label: Physical Description
content: stabilized glutaraldehyde (overall active ingredients)
label: Physical Description
content: paper (container material)
label: Physical Description
content: glass (valve container material)
label: Physical Description
content: plastic (valve container material)
label: Physical Description
content: styrofoam (overall material)
label: Measurements
content: container: 9.3 cm x 9.2 cm x 9.1 cm; 3 21/32 in x 3 5/8 in x 3 19/32 in