Device for delivery of medical devices to a cardiac valve

摘要

A catheter device for transvascular delivery of a medical device to a cardiac valve region of a patient comprises an elongate sheath with a first lumen, a distal end for positioning at a heart valve, a second lumen that extends parallel to or in the sheath, and an expandable embolic protection filter. The filter is arranged to extend from an orifice of the second lumen and, in the expanded state, covers ostia of the side branch vessels in the aortic arch.

主权项

1. A transvascular catheter device comprising:
an elongate sheath with a first lumen and a distal end, said distal end being configured for positioning at a heart valve, a second lumen that extends coaxially with said first lumen along a portion of said elongate sheath between a proximal end of said elongate sheath and said distal end, an expandable embolic protection filter having an unexpanded delivery shape and a non-tubular expanded shape, and a plurality of radially expandable units arranged for temporarily positioning said elongate sheath at a desired position in relation to said cardiac valve when said expandable units are in an expanded state wherein: at least a portion of said expandable embolic protection filter is arranged to extend from an orifice of said second lumen; said orifice is positioned proximally with respect to said distal end of said elongate sheath; the embolic protection filter is constructed so that, when extended from said orifice, the embolic protection filter expands from the unexpanded delivery shape to a substantially planar shape that covers ostia of side branch vessels in an aortic arch and stabilizes said distal end of said sheath; and said elongate sheath comprises releasable locking members configured to controllably lock at least a portion of said elongate sheath in a locked shape.