×

Fluid-assisted electrosurgical devices, electrosurgical unit with pump and methods of use thereof

  • US 8,361,068 B2
  • Filed: 10/12/2010
  • Issued: 01/29/2013
  • Est. Priority Date: 03/06/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrosurgical apparatus to provide controlled delivery of radio-frequency power and a fluid to an electrosurgical hand device to treat tissue, the apparatus comprising:

  • a radio-frequency generator configured to deliver the radio-frequency power, the radio frequency power from the radio-frequency generator being user selectable at a radio-frequency power level from a plurality of radio-frequency power settings;

    a control system configured to control a flow rate of the fluid delivered by a pump, the flow rate of the fluid being predetermined to correspond to the user-selected radio-frequency power level, wherein the control system applies a functional relationship between the user-selected radio-frequency power level and the flow rate of the fluid to determine the flow rate of the fluid based on the user-selected radio-frequency power level so as to increase the flow rate of the fluid in response to an increase in the user-selected radio-frequency power level and to decrease the flow rate of the fluid in response to a decrease in the radio-frequency power level; and

    a fluid flow rate selector configured to change the functional relationship between the user-selected radio-frequency power level and the flow rate of the fluid.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×