Apparatus and methods for reducing paravalvular leakage

A docking device for a prosthetic heart valve, the docking device comprising:

• an inflow end;
• an outflow end;
• a support structure disposed between the inflow end and the outflow end, the support structure comprising:
• an inflow section extending from the inflow end of the docking device toward the outflow end of the docking device and configured to be positioned on an inflow side of a native heart valve;
• and
• an outflow section extending between the outflow end of the docking device and the inflow section of the support structure and configured to be positioned on an outflow side of the native heart valve, wherein the outflow section comprises a first portion, a second portion, and a third portion, wherein the first portion extends distally from the inflow section to the third portion, wherein the third portion extends distally from the first portion to the second portion, and wherein the second portion extends distally from the third portion to the outflow end of the docking device;
• and
• an expandable sleeve that covers at least a portion of the support structure and comprises a first end that is fixedly coupled to the support structure and a second end that is configured to move axially relative to the support structure,
• wherein the expandable sleeve is movable from a compressed position to an expanded position when a crimping pressure is released and the second end of the expandable sleeve moves axially relative to the support structure, and
• wherein in the expanded position, the expandable sleeve extends at least 100 degrees over the first portion of the outflow section of the support structure.