Stimulation methodologies and apparatus for control of brain states

• US 6,934,580 B1
• Filed: 07/18/2003
• Issued: 08/23/2005
• Est. Priority Date: 07/20/2002
• Status: Active Grant

• Current Assignee: Flint Hills Scientific, LLC
• Original Assignee: Flint Hills Scientific, LLC
• Inventors: Osorio, Ivan, Bhavaraju, Naresh C.
• Primary Examiner(s): Nasser, Robert L.
• Assistant Examiner(s): Natnithithadha, Navin
• Application Number:
  US10/622,239
• Time in Patent Office: 767 Days
• Field of Search: 600/544, 600/545, 607/7, 607/15, 607/59, 607/62, 607/45, 128/905, 128/920, 128923-925
• US Class Current: 600/545
• CPC Class Codes: A61B 5/377 using evoked responses
• CPC Class Codes: A61B 5/4094 Diagnosing or monitoring seizure diseases, e.g. epilepsy
• CPC Class Codes: A61N 1/36064 Epilepsy
• CPC Class Codes: A61N 1/36067 Movement disorders, e.g. tremor or Parkinson disease stimulating motor muscle A61N1/36003

Abstract

A system of accessing the brain of a subject to record and/or stimulate brain stares thereof. The system includes control means, first accessing means having a plurality of contact surfaces configured to operatively connect the control means to the brain of the subject to provide three-dimensional stimulation thereof; second accessing means having a plurality of contact surfaces to operatively connect the control means to the brain of the subject to provide access thereto for the purposes of obtaining three-dimensional recordings of the brain electrical activity of the subject; and a waveform bank containing a plurality of stimulating waveforms. The control means is configured to operative apply a first at least one of the stimulating waveforms of the waveform bank to the brain of the subject through the first accessing means and to assess acceptability within defined limits, as determined by preset criteria, of the subject'"'"'s response to the application of the at first least one of the stimulating waveforms.

Claims

1. A system for accessing the brain of a subject to record and/or stimulate brain states thereof, the system comprising:

(a) control means;

(b) first accessing means having a plurality of contact surfaces to operatively connect the control means to the brain of the subject to provide access for the purposes of obtaining three-dimensional recordings of the brain electrical activity of the subject;

(c) second accessing means having a plurality of contact surfaces configured to operatively connect the control means to the brain of the subject to provide three-dimensional stimulation thereof; and

(d) a waveform bank containing a plurality of different stimulating waveforms; and

(e) wherein the control means is configured to

(1) operatively apply a first one of the plurality of stimulating waveforms of the waveform bank to the brain of the subject through the second accessing means,

(2) assess acceptability within defined limits, as determined by preset criteria, of the subject'"'"'s response to the application of the first one of the plurality of stimulating waveforms, and

(3) in the event that the subject'"'"'s response to the first one of the plurality of stimulating waveforms is not acceptable to the subject within the defined limits, discontinue applying the first one of the plurality of stimulating waveforms of the waveform bank, apply a successive one of the plurality of stimulating waveforms of the waveform bank to the brain of the subject, and assess acceptability within the defined limits of the subject'"'"'s response to the application of the successive one of the plurality of stimulating waveforms, and

(4) similarly continue applying further successive ones of the plurality of stimulating waveforms of the waveform bank to the brain of the subject until the subject'"'"'s response to the then currently applied one of the plurality of stimulating waveforms is determined to be acceptable to the subject within the defined limits.

2. The system as described in claim 1 wherein the first accessing means utilizes selected prongs of a multi-probe electrode and the second accessing means utilizes other selected prongs of the same multi-probe electrode.

3. The system as described in claim 1 wherein the control means continues applying the first one of the stimulating waveforms to the brain of the subject after the control means determines from the preset criteria that the subject'"'"'s response to the application of the first one of the stimulating waveforms is within acceptable defined limits.

4. A system for accessing the brain of a subject to record or stimulate brain states thereof, the system comprising:

(a) control means;

(b) accessing means having a plurality of contact surfaces to operatively connect the control means to the brain of the subject to provide access for the purposes of obtaining three-dimensional recordings of the brain electrical activity of the subject and providing three-dimensional stimulation to the brain of the subject; and

(c) a waveform bank containing a plurality of different stimulating waveforms; and

(d) wherein the control means is configured to

(1) operatively apply a first one of the plurality of stimulating waveforms of the waveform bank to the brain of the subject through the accessing means,

(2) assess acceptability within defined limits, as determined by preset criteria, of the subject'"'"'s response to the application of the first one of the plurality of stimulating waveforms, and

(3) in the event that the subject'"'"'s response to the first one of the plurality of stimulating waveforms is not acceptable within the defined limits, discontinue applying the first one of the plurality of stimulating waveforms of the waveform bank, apply a successive one of the plurality of stimulating waveforms of the waveform bank to the brain of the subject, and assess acceptability within the defined limits of the subject'"'"'s response to the application of the successive one of the plurality of stimulating waveforms, and

(4) similarly, continue applying further successive ones of the plurality of stimulating waveforms of the waveform bank to the brain of the subject until the subject'"'"'s response to the then currently applied one of the plurality of stimulating waveforms is determined to be acceptable to the subject within the defined limits.