Hybrid expandable device

An expandable device configured to be positioned at an implantation site proximate a native valve annulus, the expandable device comprising:

• an anchoring member comprising:
• an expandable structure comprising a first portion and a second portion,
• wherein, when the first portion is positioned at the implantation site at a first temperature and released from a constrained delivery state, the first portion is configured to self-expand into apposition with tissue at or near the annulus to secure the anchor member at the implantation site, and
• wherein the second portion remains in a low-profile state at the first temperature and is configured to expand into apposition with tissue at or near the annulus when heated to a second temperature greater than the first temperature secure the anchor member at the implantation site;
• and
• a prosthetic valve configured to be carried by, mounted within, or coupled to the anchoring member.

A system for treating a native cardiac valve of a human patient, the system comprising:

• a sheath;
• an anchoring member configured to be delivered through the sheath to a treatment site proximate a native valve annulus, the anchoring member comprising:
• an expandable structure comprising a first portion and a second portion,
• wherein, when the first portion is positioned at the treatment site at a first temperature and released from a constrained delivery state, the first portion is configured to self-expand into apposition with tissue at or near the annulus to secure the anchor member at the treatment site, and
• wherein the second portion remains in a low-profile state at the first temperature and is configured to expand into apposition with tissue at or near the annulus when heated to a second temperature greater than the first temperature;
• a prosthetic valve configured to be carried by, mounted within, or coupled to the anchoring member;
• an elongated member having a proximal end portion configured to be positioned at an extracorporeal location during implantation of the expandable structure and a distal end portion configured to be delivered through the sheath to the treatment site;
• and
• a heating element carried by the distal end portion of the elongated member, wherein the heating element is configured to facilitate heating of the second portion to the second temperature.