A catheter device is disclosed, an elongated sheath (503) with a lumen and distal end for positioning on a heart valve (6), temporarily positioned in the aortic arch for deflection of embolic debris from the ascending aorta to the descending aorta An embolic protection device (200) for connecting to a transvascular delivery unit (130) extending proximally from a connection point (131), wherein the embedding protection device (200) includes a surrounding frame, the embolic particles being At least one of said tissue delivery units (300, 350) for delivering to the side vessels of the aortic arch through the aortic valve downstream to the patient's brain and extending from said catheter to said aortic arch The embolic protection device at a retention point (502) for application of force offset with respect to the blood permeable unit in the surroundings and the connection point of the embolic protection device A blood permeable unit in the surroundings, wherein embolic particles reach the patient's brain through the blood permeable unit with the blood flow downstream of the aortic valve in the side vessel of the aortic arch. A blood permeable unit for preventing and a tissue juxtaposition holding unit (300, 350) extending from the catheter to the aortic arch and holding for application of a stabilizing force offset to the connection point of the embolic protection device Attached to the embolic protection device at point (502), the catheter device is such that the surrounding tissue apposition to the inner wall of the aortic arch is assisted by the force for stabilization and improved peripheral sealing. When located within the aortic arch, the embolic protection device is distal to the heart, such as at the periphery, and in the direction perpendicular to the longitudinal extension of the periphery. Toward the inner wall of the vein bow provides the stabilizing force. In addition, related methods are disclosed. [Selection] Figure 16cカテーテル装置が開示され、心臓弁（６）に位置づけるための管腔および遠心
