A system including a catheter device for transvascular delivery of a medical device to an aortic cardiac valve region of a patient, said system comprising said catheter device which comprises: an elongate sheath with a lumen and a distal end for positioning at said aortic cardiac valve region, and a second channel that extends parallel to said elongate sheath, wherein a distal end of said second channel is arranged more proximally than the distal end of said elongated sheath; and a plurality of radially expandable units at said distal end of said elongate sheath, wherein said plurality of radially expandable units are arranged for expanding to temporarily position said distal end in relation to said aortic cardiac valve when in an expanded state, wherein said plurality of radially expandable units comprises preferably three expandable units positioned radially equidistant around a longitudinal axis of said elongate sheath, and said distal end being positionable in the ascending aorta of said patient; an expandable embolic protection unit arranged for delivery through said second channel, and being arranged to extend from an orifice at the distal end of said second channel, wherein said embolic protection unit is non-tubular extending substantially planar and in an expanded state is configured to protrude from said second channel and cover three ostia of side branch vessels in the aortic arch, wherein said embolic protection unit is an anchor to said sheath when in an expanded state; and a medical device delivery system configured to deliver said medical device through said lumen of said elongated sheath while said expandable embolic protection unit is arranged to extend from said second channel, and wherein said medical device is a cardiac valve repair or replacement device. said catheter device which comprises: an elongate sheath with a lumen and a distal end for positioning at said aortic cardiac valve region, and a second channel that extends parallel to said elongate sheath, wherein a distal end of said second channel is arranged more proximally than the distal end of said elongated sheath; and a plurality of radially expandable units at said distal end of said elongate sheath, wherein said plurality of radially expandable units are arranged for expanding to temporarily position said distal end in relation to said aortic cardiac valve when in an expanded state, wherein said plurality of radially expandable units comprises preferably three expandable units positioned radially equidistant around a longitudinal axis of said elongate sheath, and said distal end being positionable in the ascending aorta of said patient; an elongate sheath with a lumen and a distal end for positioning at said aortic cardiac valve region, and a second channel that extends parallel to said elongate sheath, wherein a distal end of said second channel is arranged more proximally than the distal end of said elongated sheath; and a plurality of radially expandable units at said distal end of said elongate sheath, wherein said plurality of radially expandable units are arranged for expanding to temporarily position said distal end in relation to said aortic cardiac valve when in an expanded state, wherein said plurality of radially expandable units comprises preferably three expandable units positioned radially equidistant around a longitudinal axis of said elongate sheath, and said distal end being positionable in the ascending aorta of said patient; an expandable embolic protection unit arranged for delivery through said second channel, and being arranged to extend from an orifice at the distal end of said second channel, wherein said embolic protection unit is non-tubular extending substantially planar and in an expanded state is configured to protrude from said second channel and cover three ostia of side branch vessels in the aortic arch, wherein said embolic protection unit is an anchor to said sheath when in an expanded state; and a medical device delivery system configured to deliver said medical device through said lumen of said elongated sheath while said expandable embolic protection unit is arranged to extend from said second channel, and wherein said medical device is a cardiac valve repair or replacement device.