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Claims for Patent: 6,176,242

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Claims for Patent: 6,176,242

Title: Method of treating manic depression by brain infusion
Abstract:Techniques using one or more drugs, electrical stimulation or both to treat depression or manic depression by means of an implantable signal generator and electrode and/or an implantable pump and catheter. A catheter is surgically implanted in selected sites in the brain to infuse the drugs, and one or more electrodes are surgically implanted in the brain at selected sites to provide electrical stimulation.
Inventor(s): Rise; Mark T. (Monticello, MN)
Assignee:
Application Number:09/302,591
Patent Claims: 1. A method of using one or more drugs to therapeutically treat depression and manic depression by means of an implantable pump and a catheter having a proximal end coupled to the pump and a discharge portion for infusing therapeutic dosages of the one or more drugs, as well as an electric signal generator and an implantable electrode having a proximal end and a stimulation portion, the method comprising the steps of:

surgically implanting the electrode so that the stimulation portion lies adjacent a predetermined stimulation site in brain tissue, the stimulation site chosen as a location that, when electrically stimulated, reduces syptoms of depression and manic depression;

surgically implanting the catheter so that the discharge portion lies adjacent a predetermined infusion site in the brain tissue, the infusion site chosen as a location that, when therapeutic dosages of the one or more drugs are infused thereto, reduces symptoms of depression and manic depression;

coupling the proximal end of the electrode to the signal generator;

operating the signal generator to stimulate the stimulation site;

operating the pump to discharge a predetermined dosage of the one or more drugs through the discharge portion of the catheter into the infusion site while the signal generator is stimulating the stimulation site, whereby depression and manic depression are treated.

2. A method, as claimed in claim 1, wherein the stimulation site is selected from the group consisting of Anterior Limb of Internal Capsule, Head of the Caudate Nucleus/Nucleus Accumbens, Cingulum fibers, Cingulate Gyrus, Dorsal Medial Nucleus of Thalamus, Locus Coeruleous, Dorsal raphe Nucleus, Frontal Cortex and Frontal Cortex.

3. A method, as claimed in claim 1, wherein the infusion site is selected from the group consisting of Anterior Limb of Internal Capsule, Nucleus Accumbens, Head of the Caudate Nucleus/Nucleus Accumbens, Cingulum fibers, Cingulate Gyrus, Dorsal Medial Nucleus of Thalamus, Locus Coeruleous, Dorsal raphe Nucleus, Frontal Cortex, Thalamus and Frontal Cortex.

4. A method, as claimed in claim 1, wherein the one or more drugs is selected from the group consisting of Anesthetic, GABA Agonist, GABA Antagonist, Dopamine Antagonist, Dopamie Agonist, Serotonin Antagonist, Serotonin Agonist, Glutamate Antagonist, Glutamate Agonist, Adrenergic Agonist and Adrenergic Antagonist.

5. A method of using one or more drugs to therapeutically treat depression and manic depression by means of an implantable pump and a catheter having a proximal end coupled to the pump and a discharge portion for infusing therapeutic dosages of the one or more drugs, the method comprising the steps of:

surgically implanting the catheter so that the discharge portion lies adjacent a predetermined infusion site in the brain tissue, the infusion site chosen as a location that, when therapeutic dosages of the one or more drugs are infused thereto, reduces symptoms of depression and manic depression; and

operating the pump to discharge a predetermined dosage of the one or more drugs through the discharge portion of the catheter into the infusion site, whereby the depression and manic depression is treated.

6. A method as claimed in claim 5 wherein the infusion site is selected from the group consisting of Anterior Limb of Internal Capsule, Nucleus Accumbens, Head of the Caudate Nucleus/Nucleus Accumbens, Cingulum fibers, Cingulate Gyrus, Dorsal Medial Nucleus of Thalamus, Locus Coeruleous, Dorsal raphe Nucleus, Frontal Cortex, Thalamus and Frontal Cortex.

7. A method as claimed in claim 6 wherein the one or more drugs is selected from the group consisting of Anesthetic, GABA Agonist, GABA Antagonist, Dopamine Antagonist, Dopamie Agonist, Serotonin Antagonist, Serotonin Agonist, Glutamate Antagonist, Glutamate Agonist, Adrenergic Agonist and Adrenergic Antagonist.

8. A method of using electrical stimulation to therapeutically treat depression and manic depression by means of a signal generator and an implantable electrode having a proximal end and a stimulation portion, the method comprising the steps of:

surgically implanting the electrode so that the stimulation portion lies adjacent a predetermined stimulation site in brain tissue;

coupling the proximal end of the electrode to the signal generator; and

operating the signal generator to stimulate the stimulation site, whereby the depression and manic depression is treated.

9. A method, as claimed in claim 8, wherein the stimulation site is selected from the group consisting of Anterior Limb of Internal Capsule, Head of the Caudate Nucleus/Nucleus Accumbens, Cingulum fibers, Cingulate Gyrus, Dorsal Medial Nucleus of Thalamus, Locus Coeruleous, Dorsal raphe Nucleus, Frontal Cortex and Frontal Cortex.
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