Patent ID: 6575969
Filing Date: 2003-06-10
Classification: A61B

Abstract:
A process for the controlled ablation of tissue in the body of a subject, comprising the steps of:providing a housing having a portion of its surface forming a high frequency electrode and defining an inner space; inserting an inner probe into the inner space to define a channel within the inner space; supplying high frequency electrical energy to the outer housing for the ablation of tissue in the body of the subject; providing circulating coolant through the channel; monitoring audio signals, positioning a microphone adjacent the tissue and detecting the audio signals emitted by the tissue using the microphone during an ablation procedure, emanating from the tissue in the body of the subject representative of physiological changes caused by the ablation; and dynamically controlling and maintaining a degree of high frequency electrical energy supplied to the outer housing, the degree being responsive to indications of the audio signals emanating from the body of the subject.