Stimulating cranial nerve to treat disorders associated with the thyroid gland

• US 20070027483A1
• Filed: 07/28/2005
• Published: 02/01/2007
• Est. Priority Date: 07/28/2005
• Status: Active Grant

• Current Assignee: LivaNova USA, Inc. (LivaNova Plc)
• Original Assignee: Cyberonics, Inc
• Inventors: Guzman, Albert, Maschino, Steven, Buras, William, Parnis, Steven
• Granted Patent: US 7,706,874 B2
• Time in Patent Office: Days
• US Class Current: 607/2
• CPC Class Codes: A61N 1/36053 adapted for vagal stimulation A61N1/36114 takes precedence

Abstract

A method, system, and an apparatus for stimulating a cranial nerve of a patient to treat a disorder, such as a metabolic or an endocrine disorder associated with the thyroid gland with an implantable medical device are provided. The method comprises coupling an electrode to the cranial nerve selected from the group consisting of a vagus nerve, a trigeminal nerve, and a glossopharyngeal nerve. The method further includes generating an electrical signal to treat a disorder associated with the thyroid gland. The electrical signal may be applied to the cranial nerve using the electrode to provide electrical nerve stimulation therapy to the patient. For treating a patient with a metabolic or an endocrine disorder associated with the thyroid gland, a neurostimulator may be adapted to apply an electrical stimulus to the vagus nerve and/or a branch of the vagus nerve associated with the thyroid gland. By balancing hormonal imbalance, the neurostimulator may provide electrical nerve stimulation therapy to the patient, thereby treating a target metabolic or an endocrine disorder associated with the thyroid gland.

Claims

1. A method for stimulating a cranial nerve of a patient comprising:

coupling at least one electrode to said cranial nerve selected from the group consisting of a vagus nerve, a trigeminal nerve, and a glossopharyngeal nerve;

generating an electrical signal to treat a disorder associated with the thyroid gland; and

applying said electrical signal to said cranial nerve using said electrode.

2. The method of claim 1, wherein said generating an electrical signal further comprises generating said electrical signal based upon an amount of at least one of a thyroid hormone, a thyroid-stimulating hormone in the blood and a thyroid-stimulating biochemical function of the patient to treat at least one of a metabolic and an endocrine disorder.

3. The method of claim 1, wherein said coupling said at least one electrode comprises coupling said electrode to at least one cranial nerve selected from the group consisting of the left vagus nerve and the right vagus nerve.

4. The method of claim 1, wherein said coupling at least one electrode comprises coupling said electrode to a branch of said vagus nerve of said patient selected from the group consisting of a recurrent laryngeal nerve, an inferior thyroid nerve and an autonomic nerve of the autonomic nervous system.

5. The method of claim 4, wherein said coupling at least one electrode comprises positioning said electrode proximate to said branch of said vagus nerve to operatively couple said electrode to said branches of said vagus nerve.

6. The method of claim 1, wherein said applying said electrical signal comprises generating a response selected from the group consisting of an afferent action potential, an efferent action potential, an afferent hyperpolarization, a sub threshold depolarization and an efferent hyperpolarization.

7. The method of claim 6, wherein said applying said electrical signal comprises generating an afferent action potential for treating said metabolic disorder associated with the thyroid gland of said patient.

8. The method of claim 1, further comprising providing a programmable electrical signal generator coupled to said electrode, and wherein said applying said electrical signal comprises generating an electrical signal with said electrical signal generator and applying said electrical signal to said electrode.

9. The method of claim 8, further comprising programming said electrical signal generator to define said electrical signal by at least one parameter selected from the group consisting of a current magnitude, a pulse frequency, and a pulse width, wherein said parameter is selected to treat said metabolic disorder.

10. The method of claim 1, further comprising detecting a symptom of said metabolic disorder, wherein said applying said electrical signal is initiated in response to said detecting.

11. The method of claim 10, wherein said detecting said symptom comprises using a thyroid function detector.

12. The method of claim 11, wherein said applying said electrical signal is performed during a first treatment period, and further comprises:

applying a second electrical signal to said cranial nerve using said electrode during a second treatment period to treat said metabolic disorder;

detecting a symptom of said metabolic disorder; and

sensing a metabolic imbalance and said second treatment period being initiated upon said detecting said symptom.

13. A method of treating a patient having at least one of a metabolic and an endocrine disorder, comprising:

coupling at least one electrode to at least one cranial nerve of said patient, wherein said cranial nerve is selected from the group consisting of a vagus nerve, a trigeminal nerve, and a glossopharyngeal nerve;

providing a programmable electrical signal generator coupled to said electrode;

programming said programmable electrical signal generator to generate an electrical signal;

detecting a symptom associated with said at least one of a metabolic and an endocrine disorder; and

in response to detecting said symptom, generating said electrical signal to apply to said electrode to treat said at least one of a metabolic and an endocrine disorder.

14. The method of claim 13, wherein said programming said programmable electrical signal generator to generate an electrical signal further comprises generating said electrical signal based upon an amount of at least one of a thyroid hormone, a thyroid-stimulating hormone in the blood and a thyroid-stimulating biochemical function of the patient to treat said at least one of a metabolic and an endocrine disorder.

15. The method of claim 13, wherein said coupling at least one electrode comprises coupling said electrode to a branch of said vagus nerve of said patient selected from the group consisting of a recurrent laryngeal nerve, an inferior thyroid nerve and an autonomic nerve of the autonomic nervous system.

16. A method for stimulating a nerve branch associated with the thyroid gland of a patient comprising:

coupling at least one electrode to said nerve branch selected from the group consisting of a recurrent laryngeal nerve, an inferior thyroid nerve originating from the recurrent laryngeal nerve and an autonomic nerve of the autonomic nervous system; and

generating an electrical signal to treat a disorder associated with the thyroid gland; and

applying said electrical signal to said nerve branch using said electrode.

17. The method of claim 16, wherein said generating an electrical signal further comprises generating said electrical signal based upon an amount of at least one of a thyroid hormone, a thyroid-stimulating hormone in the blood and a thyroid-stimulating biochemical function of the patient to treat at least one of a metabolic and an endocrine disorder.

18. The method of claim 16, wherein said coupling said at least one electrode comprises using said electrode to stimulate said nerve branch nerve using a location selected from the group consisting of the left vagus nerve and the right vagus nerve.

19. The method of claim 16, wherein said coupling said at least one electrode comprises operatively coupling said electrode to said nerve branch using an attachment selected from the group consisting of a mechanical attachment and an electrical attachment located in proximity to said nerve branch.

20. The method of claim 16, wherein said applying said electrical signal comprises generating a response selected from the group consisting of an afferent action potential, an efferent action potential, an afferent hyperpolarization, a sub threshold depolarization and an efferent hyperpolarization.

21. The method of claim 16, wherein said applying said electrical signal comprises generating said electrical signal based on an amount of at least one of a thyroid hormone and a thyroid-stimulating hormone in the blood of the patient relative to a value within a defined range and a thyroid-stimulating biochemical function of the patient to treat at least one of a metabolic and an endocrine disorder.

22. A method for stimulating a vagus nerve branch associated with the thyroid gland of a patient comprising:

coupling at least one electrode to said vagus nerve branch selected from the group consisting of a recurrent laryngeal nerve and an inferior thyroid nerve originating from the recurrent laryngeal nerve; and

generating an electrical signal to treat a disorder associated with the thyroid gland; and

applying said electrical signal to said vagus nerve branch using said electrode.

23. The method of claim 22, wherein said generating an electrical signal further comprises generating said electrical signal based upon an amount of at least one of a thyroid hormone, a thyroid-stimulating hormone in the blood and a thyroid-stimulating biochemical function of the patient to treat at least one of a metabolic and an endocrine disorder.

24. The method of claim 22, wherein said coupling said at least one electrode comprises using said electrode to stimulate said vagus nerve branch using a location selected from the group consisting of the left vagus nerve and the right vagus nerve.

25. The method of claim 22, wherein said coupling said at least one electrode comprises operatively coupling said electrode to said vagus nerve branch using an attachment selected from the group consisting of a mechanical attachment and an electrical attachment located in proximity to said vagus nerve branch.

26. The method of claim 22, wherein said applying said electrical signal comprises generating a response selected from the group consisting of an afferent action potential, an efferent action potential, an afferent hyperpolarization, a sub-threshold depolarization and an efferent hyperpolarization.

27. The method of claim 22, wherein said applying said electrical signal comprises generating said electrical signal based on an amount of at least one of a thyroid hormone and a thyroid-stimulating hormone in the blood of the patient relative to a value within a defined range and a thyroid-stimulating biochemical function of the patient to treat at least one of a metabolic and an endocrine disorder.