Patent ID: 8430888
Filing Date: 2013-04-30
Classification: A61B,A61N

Abstract:
1. A method of delivering a medical device within a brain of a patient, said method comprising: inserting a distal portion of a main cannula into said brain, said main cannula having a longitudinal axis and a lumen; positioning a guiding cannula in said lumen of said main cannula, said guiding cannula comprising a lumen and a distal end portion configured to bend; adjusting an insertion depth of said guiding cannula, wherein said distal end portion of said guiding cannula is bent as it is advanced from said main cannula, such that a longitudinal angle is formed between a line perpendicular to, and extending through, said longitudinal axis, and said bent distal end portion when projected within a plane that includes said line; setting said longitudinal angle by rotating said distal end portion within said main cannula prior to advancing said distal end portion from said main cannula; passing a medical device through said lumen of said guiding cannula into said brain; withdrawing said distal end portion into said main cannula; setting said longitudinal angle again by rotating said distal end portion within said main cannula after said distal end portion is withdrawn into said main cannula; and advancing said withdrawn distal end portion from said main cannula.