Thalamic stimulator

A thalamic stimulator is a relatively new medical device that can suppress tremors, such as those caused by Parkinson's Diseaseor essential tremor. It was approved for use by the FDAon 1997-08-04. Installation is invasive, so it is typically only used when the tremors are incapacitating, and medication is ineffective. Typically, one or more electrodes are implanted in the brain, with subcutaneousleads to a neurostimulator, which may also be implanted. The electrodes stimulate the area of the thalamus, specifically the part of the brain that controls movement and muscle function.

It is notable that the presence of thalamic stimulators significantly changes ECGpatterns, and prevents the use of MRI. It is sometimes regarded as a better alternative to pallidotomyor thalamotomybecause it is non-permanent. For optimal installation, the patient is awake during the procedure, and talks to the surgeon to find the best placement. Once in place, the device can be activated and deactivated, for improved effectiveness during the day.

Brands

The following companies provide thalamic stimulators:

• Medtronic's Activa

Sources

• Differential electrocardiographic artifact from implanted thalamic stimulator
• FDA Okays Powerful Brain Implant
• Washington University implanting brain device to control tremor
• New device offers relief for patients with tremors

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It uses material from the http://en.wikipedia.org/wiki/Thalamic+stimulator Wikipedia article Thalamic stimulator.