Fluid-assisted electrosurgical devices, electrosurgical unit with pump and methods of use thereof
First Claim
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.
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Accused Products
Abstract
The invention provides an electrosurgical unit comprising a radio-frequency power source and a pump, with the throughput of fluid expelled by the pump controlled by the RF power level setting and fluid flow rate setting. The invention also provides various electrosurgical devices which may be used with the electrosurgical unit. In one embodiment, the electrosurgical device comprises a first electrode tip spaced next to a second electrode tip with a portion of the first electrode tip facing the second electrode tip and a portion of the second electrode tip facing the first electrode tip, the first electrode tip and the second electrode tip both having a spherical distal end, and a fluid outlet arrangement to expel fluid onto the electrode tips solely at locations remote from the electrode tip portions facing each other.
1075 Citations
19 Claims
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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:
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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 Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A non-transitory computer readable medium having stored thereon computer-executable instructions that, in response to execution by a computing device, cause the computing device to perform operations comprising:
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delivering radio-frequency power to an electrosurgical hand device based on a user-selected radio-frequency power level from a plurality of radio-frequency power settings; determining a functional relationship from a selection at a fluid flow rate selector, the functional relationship being between a user-selected radio-frequency power level and a flow rate of a fluid; determining the flow rate of the fluid, the flow rate of the fluid being predetermined to correspond to the user-selected radio-frequency power level; and applying the flow rate to a pump controller 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. - View Dependent Claims (17, 18, 19)
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Specification