Smeloff-Cutter Modified Caged Ball Valve
date: label: date made
content: ca 1966
name: label: maker
content: Cutter Laboratories, Inc.
notes: label: Description (Brief)
content: This double caged ball valve for aortic valve replacement was developed by Edward Smeloff M.D. The struts at the top and bottom of the valve remain open and unconnected to the lower surface area. It has a titanium skeleton with a silastic ball and cloth suture. Its advantages are long term durability and good hemodynamics. The disadvantages are a high embolic rate and the need to take an anticoagulant. This valve is a size T, with serial number 534A. A 1975 study on 200 patients who received this implant yielded a hospital mortality rate of 22% and a thromboembolic complication rate of 15%. Another study of 134 patients with a mean age of 54 years and aortic stenosis as the dominant issue yielded an 85% survival rate of 5 years and a 75% survival rate of eight years. Its main structural problem is that of ball variance, but it has an advantage over disc valves with a lower rate of thrombotic stenosis.
label: Description (Brief)
content: Edward Smeloff (1925-2012) worked with the engineering department at Sacramento State College to develop a mechanical heart. The Smelloff-Cutter valve was the result of this effort. The valve was manufactured by Cutter Laboratories, a family-owned pharmaceutical company in Berkeley, California founded by Edward Ahern Cutter in 1897.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, Berkeley
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: 2015.0031.22
label: catalog number
content: 2015.0031.22
label: accession number
content: 2015.0031
label: serial number
content: 534A
objectType: label: Object Name
content: cardiology
label: Object Name
content: artificial heart valve
physicalDescription: label: Physical Description
content: silastic (valve material)
label: Physical Description
content: titanium (valve material)
label: Physical Description
content: cloth (valve material)
label: Physical Description
content: silicone rubber (valve material)
label: Measurements
content: valve: 3.9 cm x 4.3 cm; 1 17/32 in x 1 11/16 in