Surgery – Instruments – Electrical application
Reexamination Certificate
2006-07-11
2006-07-11
Rollins, Rosiland (Department: 3739)
Surgery
Instruments
Electrical application
C607S096000, C607S101000, C128S898000
Reexamination Certificate
active
07074217
ABSTRACT:
An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated.
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Kane Mark Leo
Sampson Russel Mahlon
Strul Bruno
Truckai Csaba
Cytyc Surgical Products
Rollins Rosiland
Stallman & Pollock LLP
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