Switch mechanisms for safe activation of energy on an electrosurgical instrument
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United States of America Patent
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Nov 23, 2010
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app pub date -
Jul 13, 2005
filing date -
Jul 13, 2005
priority date (Note) -
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Abstract
Various safe switching mechanisms are provided for use with electrosurgical instruments which prevent arcing between the high-energy contacts as the high-energy source is activated. The switching mechanisms generally include a pair of high-energy contacts and a pair of activation contacts. An actuator is provided which initially engages the high-energy contacts in advance of engagement of the activation contacts to prevent arcing and subsequently disengages the activation contacts in advance of the high-energy contacts as the energy source is deactivated. A method of switching power to an electrosurgical instrument while avoiding damage to high-energy contacts is also disclosed.
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