Switch mechanisms for safe activation of energy on an...

Details Switch mechanisms for safe activation of energy on an... Switch mechanisms for safe activation of energy on an...

H - Electricity

01

H

H01H 33/14 (2006.01) A61B 18/04 (2006.01) A61B 18/12 (2006.01) H01H 31/02 (2006.01)

Patent

CA 2551839

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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