A method and system for guiding at least a portion of a surgical device to a desired position between two tissues in a patient's body involves coupling a guidewire to the device and pulling the distal end of the guidewire to guide at least a portion of the surgical device to a desired position between...http://www.google.se/patents/US7857813?utm_source=gb-gplus-sharePatent US7857813 - Tissue access guidewire system and method
