Patent ID: 8142463

Claim:
An apparatus, comprising: a first elongate member defining a lumen; a second elongate member movably disposed within the lumen of the first elongate member, the second elongate member having a threaded exterior surface and defining a lumen, the threaded exterior surface including helical threads having a direction associated with a direction of rotation of the second elongate member; and a third elongate member movably disposable within the lumen of the second elongate member, the third elongate member movable between a first configuration in which a distal end portion of the first elongate member has a first curvature and a second configuration in which the distal end portion of the first elongate member has a second curvature different than the first curvature, the first elongate member, the second elongate member and the third elongate member collectively configured to be inserted into a biological body when the third elongate member is in the first configuration, the distal end portion of the first elongate member being movable to the second curvature while disposed within the biological body.