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Skull-Mounted Electrical Stimulation System

IP.com Disclosure Number: IPCOM000019827D
Publication Date: 2003-Oct-01
Document File: 27 page(s) / 2M

Publishing Venue

The IP.com Prior Art Database

Abstract

A system and method for applying electrical stimulation to the brain to treat headaches and neuralgia uses at least one implantable system control unit (SCU), specifically an implantable signal/pulse generator (IPG) with one or more electrodes. The IPG is implanted in the mastoid area of the skull and communicates with at least one external appliance, such as a Behind-the-Ear (BTE) unit. In a preferred embodiment, the system is capable of open- and closed-loop operation. In closed-loop operation, at least one SCU includes a sensor, and the sensed condition is used to adjust stimulation parameters.

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Skull-Mounted Electrical Stimulation System

Background & Summary

The present invention generally relates to implantable stimulator systems and methods, and more particularly relates to implantable stimulator systems and methods utilizing one or more implantable leads for treating headache and/or occipital neuralgia.

The public health significance of headache pain and occipital neuralgia is often overlooked, probably because of their episodic nature and the lack of mortality attributed to them. Headache disorders and occipital neuralgia are, however, often incapacitating, with considerable impact on social activities and work, and may lead to significant consumption of drugs with adverse side effects.

The International Headache Society (IHS) published "Classification and Diagnostic Criteria for Headache Disorders, Cranial Neuralgias and Facial Pain" in 1988. IHS identified 13 different general groupings of headache, given below in Table 1.

1.      Migraine

 

2.      Tension-type headache

 

3.      Cluster headache and chronic paroxysmal hemicrania

 

4.      Miscellaneous headaches unassociated with structural lesions

 

5.      Headache associated with head trauma

 

6.      Headache associated with vascular disorders

 

7.      Headache associated with non-vascular intracranial disorder

 

8.      Headache associated with substances or their withdrawal

 

9.      Headache associated with non-cephalic infections

 

10. Headaches associated with metabolic disorders

 

11. Headache or facial pain associated with disorder of cranium, neck, eyes, ears, nose, sinuses, teeth, mouth or other facial or cranial structures

 

12. Cranial neuralgias, nerve trunk pain and deafferentation pain

 

13. Non-classifiable headache

 

Table 1. Groupings of Headache Disorders and Facial Pain

The IHS classification of the most common types of headache is summarized in Table 2, below.

1. Migraine

1.1 Migraine without aura

1.2 Migraine with aura

1.2.1 Migraine with typical aura

1.2.2 Migraine with prolonged aura

1.2.3 Familial hemiplegic migraine headache

1.2.4 Basilar migraine

1.2.5 Migraine aura without headache

1.2.6 Migraine with acute onset aura

1.3 Ophthalmoplegic migraine

1.4 Retinal migraine

1.5 Childhood periodic syndromes that may be precursors to or associated with migraine

1.5.1 Benign paroxysmal vertigo of childhood

1.5.2 Alternating hemiplegia of childhood

1.6 Complications of migraine

1.6.1 Status migrainosus

1.6.2 Migrainous infarction

1.7 Migrainous disorder not fulfilling above criteria

2. Tension-type headache

2.1 Episodic tension-type headache

2.1.1 Episodic tension-type headache associated with disorder of pericranial muscles

2.1.2 Episodic tension-type headache not associated with disorder of pericranial muscles

2.2 Chronic tension-type headache

2.2.1 Chronic tension-type headache associated with disorder of pericranial muscles

2.2.2 Chronic tension-type headache not associated with disorder of pericranial muscles

2.3 Headache of the tension-type not fulfilling above criteria

3. Cluster headache and chronic paroxysmal hemic...