Right side Ventricular Assist Device
date: label: date made
content: 1987-12-04
name: label: maker
content: Kolff Laboratory
notes: label: Description
content: This polyurethane right ventricular assist device (RVAD), is made by vacuum forming and assumes the pumping function of the right ventricle. It can also be used in conjunction with a left ventricular assist (LVAD) to form a total artificial heart. The flexible, multilayer diaphragm separates the blood and gas chambers of a circular ventricle and has a volume of 50 cc. A graphite coating acts as a lubricant between the diaphragm's layers. An air drive line tube emerges from the base of the pump sac with Dacron netting at the junction where clotting is likely to occur. Dacron's rough surface anchors and isolates blood clots to prevent embolization. The tube delivers compressed air to the gas chamber to actuate the pumping diaphragm. Dacron fibrils are at the junction between the diaphragm and blood chamber housing. Clots are more likely to form inside ventricles with rough intima. Dacron fibrils had been applied inside with thin pellethane and loose fibrils removed with air pressure. Remaining fibrils are coated with a thin pellethane layer for a smooth surface. Two snouts with sinus valsavae, petal-shaped backflow regions. Inflow port contains a bell-shaped pellethane cuff for connecting to the right atrium. The cuff is lined on the outside with Dacron velour. The outflow port contains a corrugated Dacron graft for connection to the pulmonary artery. Polyurethane trileaflet valves are cheaper and cause less trauma to the blood than mechanical valves.
label: Description
content: The RVAD is accompanied by a quality-control checklist for the vacuum-formed housing. No quick connects. Indicates mold temperature and pellethane type and thickness. Chronic quality. Approved for mandatory .060 thickness of port walls. Checklist also includes condition of valve junctions, diaphragm-housing junction, and webbing.
label: Location
content: Currently not on view
place: label: place made
content: United States: Utah, Salt Lake City
topic: label: Subject
content: Artificial Organs
label: Subject
content: Medicine
label: Subject
content: Cardiology
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 Hearts
publisher: label: Related Publication
content: Pantalos, G.M., et al.. Development of Smaller Artificial Ventricles and Valves Made by Vacuum Forming
creditLine: label: Credit Line
content: Willim J. Kolff, M.D.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1998.0035.050
label: accession number
content: 1998.0035
label: catalog number
content: 1998.0035.050
label: collector/donor number
content: 5.13
objectType: label: Object Name
content: heart, artificial
label: Object Name
content: ventricular assist device
physicalDescription: label: Physical Description
content: dacron (overall material)
label: Physical Description
content: graphite (overall material)
label: Physical Description
content: pellethane (overall material)
label: Measurements
content: overall: 62 cm x 7.5 cm x 7 cm; 24 13/32 in x 2 15/16 in x 2 3/4 in
label: Measurements
content: overall: 3 3/4 in x 10 5/8 in x 7 1/2 in; 9.525 cm x 26.9875 cm x 19.05 cm