Patent ID: 8229553
Filing Date: 2012-07-24
Classification: A61B

Abstract:
1. A medical device for localization of tissue at a target site comprising: a. an elongated shaft which has a tissue penetrating distal tip, a distal shaft portion proximal to the distal tip and a proximal shaft portion, with the tissue penetrating distal tip configured to pass through tissue to facilitate placement of the distal shaft portion into a patient's body at a desired target site; b. at least one elongated first fixation element on the distal shaft portion which has a retracted and an expanded configuration, which has a free end that extends away from a first location on the distal shaft portion in a distal direction in the expanded configuration and that deploys into tissue at the target site in the expanded configuration to facilitate securing the distal shaft portion within tissue at the target site; c. a pusher element on the distal shaft portion configured to change the first fixation element from the retracted configuration to the expanded configuration; d. at least one elongated second fixation element on the distal shaft portion which has a retracted and an expanded configuration, which has a fixed end and a free end, the free end of the second fixation element extending away from a second location on the distal shaft portion in a proximal direction in the expanded configuration when the at least one first fixation element extends in the distal direction and that deploys into tissue in the expanded configuration to facilitate securing the distal shaft portion within tissue at the target site; and e. a holding element for holding the fixed end of the second fixation element.