Electrode deployment mechanism and method using artificial muscle
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United States of America Patent
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Nov 26, 1996
Grant Date -
N/A
app pub date -
Dec 6, 1995
filing date -
Dec 6, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lead having a defibrillation electrode that is deployed for defibrillation using artificial muscle. In an undeployed position, the defibrillation electrode is small in diameter so as to be easily implanted pervenously and nonobstructive to cardiac contraction and blood flow. In a deployed position the defibrillation electrode is larger in diameter for defibrillation shock delivery. Thus, the electrode forces an increased amount of current to flow through the heart muscle during shock delivery to depolarize the majority of the cardiac tissue with a minimum of energy, while not obstructing blood flow at other times when not used for energy delivery.
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