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Figure 6 Direct Flow PHV

The valve is constructed of 2 hydrophilic coated inflatable rings (yellow arrows) with bovine pericardial tissue sutured in a noninflatable cylindrical segment that anchors the aortic annulus (green arrow). The valve is controlled with 3 control wires (blue) and is fixed in position by using a permanent polymer to inflate the 2 inflatable rings. PHV = percutaneous heart valve.