Anchoring device

An anchoring device, the device comprising:

• a tubular body having a longitudinal axis, an outer surface, and an inner surface opposite and radially spaced apart from the outer surface, wherein an axially extending section of the body defines two or more openings extending from the outer surface to the inner surface, each of the two or more openings having a first axial end and a second axial end opposite and spaced apart from each other along the longitudinal axis, wherein the two or more openings are circumferentially spaced apart from each other;
• and
• two or more anchors each extending along a separate one of the two or more openings in a circumferential direction and coupled to the first axial end and the second axial end of the respective opening, wherein the two or more anchors comprise a shape memory material,
• wherein each of the two or more anchors is movable from a retracted position to an extended position by either increasing the temperature of the anchor above an austenite finishing temperature or decreasing the temperature of the anchor below a martensite finishing temperature, wherein each of the two or more anchors has a smaller radius of curvature in a plane that includes the longitudinal axis in the extended position than in the retracted position,
• wherein a portion of the tubular body between the two or more circumferentially spaced openings does not extend when the two or more anchors move from the retracted position to the extended position.