| http://www.w3.org/ns/prov#value | - A circumferential ring 111 extends around the support structure 26D. The ring 111 is preferably made of stainless steel or shape-memory alloy such as nitinol and provides circumferential support of the valve against the aortic wall for hemostasis. [0084] The valve displacer 8D is mounted to a delivery catheter 4D having a balloon 112 for expanding the valve displacer 8D and valve 6D. The balloon 1
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