Integrated Guidewire Needle Knife Device

摘要

Devices and methods for translumenal access are provided. In one embodiment, a device for translumenal access includes an elongate member having proximal and distal ends and a lumen extending therethrough. A tissue-penetrating wire can extend through the lumen, and in use the wire can be selectively movable between a retracted position where the wire is in a constrained configuration within the lumen and an extended position in which a portion of the wire extends a distance beyond a distal end of the elongate member. The portion of wire which extends the distance beyond the distal end of the elongate member can be adapted to assume a non-linear unconstrained configuration to prevent injury to the tissue and/or tissue structures adjacent to the tissue.