Minimally invasive methods for locating an optimal location for deep brain stimulation
AssigneeBoston Scientific Neuromodulation Corporation
InventorsZdzislaw B. Malinowski, Salomo Siilas Murtonen
Life of this patent
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Abstract
Methods of locating an optimal site within a brain of a patient for deep brain stimulation include positioning a guiding cannula in a lumen of a main cannula, passing a microelectrode through a lumen of the guiding cannula into the brain, adjusting an insertion depth and a longitudinal angle of the guiding cannula such that the microelectrode locates the optimal site for the deep brain stimulation, and passing a distal end of a macroelectrode or a deep brain stimulation lead through the lumen of the main cannula and into the brain at the optimal site.
Claims23
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;
- 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 of said guiding cannula when projected within a plane that includes said line;
- setting said longitudinal angle by rotating said distal end portion within and relative to said main cannula prior to advancing said distal end portion from said main cannula;
- and
- passing a medical device through said lumen of said guiding cannula into said brain.
A method of locating an optimal stimulation site within a brain of a patient, said method comprising:
- (a) inserting a portion of a main cannula into said brain, said main cannula having a longitudinal axis and a lumen;
- (b) inserting a portion of a guiding cannula into said lumen of said main cannula, said guiding cannula having a lumen and a distal end portion configured to bend;
- (c) 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 of said guiding cannula when projected within a plane that includes said line;
- (d) setting said longitudinal angle by rotating said distal end portion of said guiding cannula within and relative to said main cannula prior to advancing said distal end portion of said guiding cannula from said main cannula;
- (e) passing a microelectrode through said lumen of said guiding cannula into said brain such that said microelectrode locates said optimal stimulation site;
- and
- (f) wherein if an optimal stimulation site is not located by said microelectrode, said method comprises retracting said microelectrode and said guiding cannula out of said brain and repeating steps (c), (d), (e), and (f).
Dependencies are inferred from the claim text.