Radio-Frequency Generator for Powering an Ablation Device
10 Assignments
0 Petitions
Accused Products
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.
4 Citations
17 Claims
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1-8. -8. (canceled)
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9. A system for treating a patent'"'"'s uterus comprising:
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a radio frequency power supply; an ablation device operationally coupled to the radio frequency power supply, the ablation device having a distal portion configured to be positioned in a patent'"'"'s uterus; an impedance detection circuit operationally coupled to the ablation device and configured to generate an impedance of tissue in contact with the ablation device; and an audio circuit operationally coupled to the impedance detection circuit and configured to produce a signal having a frequency related to the impedance. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification