Medical device with induction triggered anchors and system for deployment of the same

A delivery system for deployment of a prosthesis within a body vessel, comprising:

• an outer sheath coaxially disposed over an inner cannula, the outer sheath and the inner cannula defining a retention region;
• and the prosthesis including a prosthesis body resiliently movable between a radially compressed configuration and a radially expanded configuration, and a plurality of thermal activatable anchor elements, each of the plurality of thermal activatable anchor elements having a base and an anchor tip at an end opposite from the base, wherein the base is coupled along the prosthesis body;
• the plurality of thermal activatable anchor elements including:
• a delivery configuration when the prosthesis is in the radially compressed configuration, wherein the prosthesis is disposed along the retention region and retained in the radially compressed configuration by the outer sheath;
• a first deployed configuration wherein, with retraction of the outer sheath, the prosthesis is movable to the radially expanded configuration and the plurality of thermal activatable anchor elements are resiliently movable from the delivery configuration to pierce completely through a body tissue wall of the body vessel, and a second deployed configuration wherein, in response to an increase in temperature of the plurality of thermal activatable anchor elements in the first deployed configuration, the plurality of thermal activatable anchor elements are movable to press portions of the plurality of thermal activatable anchor elements extending through a pierced body vessel wall against an exterior of the body vessel to bring the prosthesis body and the pierced body tissue wall relatively closer to one another.

A medical device disposed about a longitudinal axis, comprising:

• a device body comprising a stent frame structure;
• at least one anchor element comprising a thermal activatable material, the at least one anchor element comprising a base and an anchor tip at an end opposite from the base, wherein the base is coupled to the stent frame structure;
• and wherein the at least one anchor element is adjustable between:
• a first configuration, where the at least one anchor element is disposed about an anchor axis substantially perpendicular to the longitudinal axis and the anchor tip is configured to pierce completely through a body tissue wall;
• and in response to a temperature rise in the at least one anchor element, a second configuration where the at least one anchor element is configured to:
• at a first portion of the at least one anchor element adjacent the base and extending through the body tissue wall, maintain alignment substantially with the anchor axis to inhibit tearing of a pierced body tissue wall by the at least one anchor element;
• and at a second portion of the at least one anchor element extending outside the body tissue wall and adjacent the anchor tip, press against an exterior of the body tissue wall to bring the prosthesis body and the pierced body tissue wall relatively closer to one another.