Gas flow control in gas-assisted esu

Details Gas flow control in gas-assisted esu Gas flow control in gas-assisted esu

A - Human Necessities

61

B

A61B 18/00 (2006.01) G05D 7/00 (2006.01)

Patent

CA 2514099

A gas delivery apparatus used in gas-assisted electrocoagulation temporarily reduces a gas flow rate in a flowpath to an application which applies the flow of gas and electrical energy to the tissue during an arc initiation sequence. The reduced gas flow rate enhances the arc initiation capabilities and reduces the possibilities of embolism. After the arc initiation sequence is complete, the gas flow rate returns to a greater rate used during electrocoagulation. The back pressure in the flowpath and a user requested flow rate are control variables used to reduce the flow rate upon the occurrence of back pressure-related conditions and to increase the flow rate after the dissipation of those back pressure conditions.

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