Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital Heart valve prostheses with two pivoting flaps made of pyrocarbon with supraannular and intraannular cuff forms with antecubital