Patent ID: 7369899
Filing Date: 2008-05-06
Classification: A61B,A61N

Abstract:
1. A system to facilitate locating a medical device within a brain of a patient comprising: a main cannula having a longitudinal axis and an internal lumen; a guiding cannula configured to pass through said lumen of said main cannula and to guide said medical device into said brain, said guiding cannula having a distal end portion that is pre-shaped to bend; a depth adjustment mechanism configured to adjust an insertion depth of said guiding cannula, such that a longitudinal angle is formed by said guiding cannula when said distal end portion is advanced from said main cannula; and a longitudinal angle adjustment device configured to rotate about said longitudinal axis to set said longitudinal angle of said guiding cannula by rotating said distal end portion about said longitudinal axis prior to said advancement of said distal end portion from said main cannula.