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Action Tremor clinical trials

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NCT ID: NCT03156517 Completed - Action Tremor Clinical Trials

A Controlled Comparison of Two DBS Targets for Upper Extremity Action Tremor

Tremorstim
Start date: April 20, 2014
Phase: N/A
Study type: Interventional

Action tremor of the arms can be an invalidizing symptom of diseases such as Essential Tremor, Dystonic Tremor, Parkinson's disease and Multiple Sclerosis. In this study we compare the efficacy and safety of two different brain targets for deep brain stimulation (DBS) that both are known to reduce action tremor of the arms. These two targets are called the VIM nucleus of the thalamus (VIM) and the posterior subthalamic area (PSA), which includes the Zona Incerta. Both targets can be reached by one lead (wirh four electrode contact). Patients that are found eligible for DBS because of severe action tremor of the arms are invited to participate. After randomization, half of them are stimulated first in the VIM for 3 months and then in the PSA for 3 months, and the other half first in the PSA and then VIM for 3 months each. Tremor severity is scored on a clinical quantitative scale at baseline and at the end of each of these two 3-month periods, and eventual side-effects are registered. The best target is then selected and after another 6 months scoring is repeated. We intend to provide robust data about whether one of the two targets is superior to the other both regarding ability to reduce tremor efficiently and to avoid or minimize side-effects, or if there is no significant difference between the two targets. We also carefully check the exact position of the active electrode contact in the brain and compare this with efficacy and safety evaluations. Long-term follow-up is planned after 3, 5, 7 and 10 years.

NCT ID: NCT02960243 Recruiting - Essential Tremor Clinical Trials

Deep Brain Stimulation for Voice Tremor: Left, Right, or Both Hemispheres?

EVT
Start date: August 2016
Phase: Phase 1/Phase 2
Study type: Interventional

Deep Brain Stimulation (DBS) is the gold standard treatment for Essential Tremor (ET). ET is a movement disorder which causes the arms, feet, fingers, head or voice to involuntarily shake. The DBS surgical procedure involves implanting an electrode deep within the brain which blocks damaging signals that cause the tremor. Essential Voice Tremor (EVT) is the vocal manifestation of ET and a number of individuals have both ET and EVT, and when these patients are implanted for their ET, their EVT symptoms are often also mitigated. This study aims to quantify the effects of DBS on EVT by testing on these ET+EVT patients. In addition to this, we hope to determine which hemisphere of the brain is responsible for larynx control: left or right.

NCT ID: NCT02087046 Completed - Essential Tremor Clinical Trials

Deep Brain Stimulation (DBS) for the Suppression of Tremor

Start date: October 2005
Phase: N/A
Study type: Interventional

The purpose of the proposed study is to demonstrate the safety and efficacy of the ANS Totally Implantable Deep Brain Stimulation System in the VIM nucleus of the thalamus implanted for the treatment of tremor due to essential tremor. This study will be included in the Pre-Market Approval Application to support the safety of this device in use.