Patent ID: 7150712

Claim:
A target tissue localization assembly comprising: an anchor assembly comprising: an elongated placement element having a placement element distal end and a placement element proximal end; an elongated anchor actuator element comprising a wire and having an actuator element distal end and an actuator element proximal end, extending along the placement element, the actuator element distal end movable relative to the placement element distal end; and a radially expandable tissue anchor operably coupleable to the placement and anchor actuator elements, movable from a radially contracted condition to a radially expanded, deployed condition when the distal ends are moved relative to one another from a first state to a second state; and a lock engageable between the actuator element and the placement element when the anchor is in the deployed condition to at least temporarily prevent collapse of the anchor by preventing movement of the distal ends back to the first state.