Cross-Jones Mitral Valve

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Description (Brief)
This is a Cross-Jones non-tilting disc mitral valve developed by Dr. Frederick Cross, MD. It is a size 90 with a lens weight of 2.6463 grams and serial number H-0021-9. Non-tilting valves fell into disuse because of issues such as frequent thromboembolic complications, and the destruction of blood cells known as hemolysis. The Cross-Jones valve was manufactured between 1967 and 1974. It has an open cage composed of three metal struts. The disc is radiolucent silicone rubber with a titanium ring to strengthen the disc and make it radiopaque. Other complications included cocking of the disc, retrograde dislodgement, and disc variance.
The valve was manufactured by Pemco Incorporated and designed by Dr. Frederick Cross of Saint Luke's Hospital in Cleveland, Ohio. In 1956 Cross collaborated with Dr. Earle Kay to build the Kay-Cross oxygenator rotating-disc heart-lung machine. He was director of department of surgery at St. Luke's Hospital in Cleveland, Ohio for more than twenty-six years, and head of thoracic and cardiovascular surgery for thirty-three. He retired in 1988.
Currently not on view
date made
ca 1967
Pemco Incorporated
place made
United States: Ohio, Cleveland
Physical Description
titanium (valve material)
cloth (valve material)
silicone rubber (valve material)
valve: 1.8 cm x 3.7 cm; 23/32 in x 1 15/32 in
ID Number
catalog number
accession number
serial number
Credit Line
Gift of Manuel Villafaña
Artificial Organs
See more items in
Medicine and Science: Medicine
Artificial Heart Valves
Health & Medicine
Data Source
National Museum of American History


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