Depends on the type.: There are several "artificial" heart valves, each with different manufacturers. Here in the US - surgical mechanical valves - mostly St. Jude. surgical biologic valves - mostly Edwards Lifesciences. percutaneous (stented) valve - Edwards currently available in US, but other companies like Medtronic and St. Jude (and other small companies) have devices in trials or experimental phase.
Answered 11/30/2014
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There are multiple: Different manufacturers.
Answered 9/18/2013
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