APPARATUS AND METHOD FOR INTERSTITIAL TREATMENT

摘要

An apparatus and method for interstitial treatment and diagnosis in organs utilizing a flexible delivery cannula having an interstitial locking means thereon is as follows: the apparatus includes a shaft (36) for insertion into a body passage adjacent to the organ to be treated and adapted to guide cannula (12) into the organ. The shaft (36) is also adapted to receive an endoscope (28) to visualize insertion of the cannula (12). The cannula locking means (16) preferably includes an expandable locking member formed from the outer sheath of the delivery cannula at the distal end. The locking member is expanded in response to relative motion between inner and outer sheaths of the delivery cannula.