Patent ID: 7025765

Claim:
A method of treating a tumor comprising: providing a tissue biopsy and treatment apparatus for detecting and treating a tumor, comprising an elongated delivery device including a lumen, a sensor array deployable from the elongated delivery device, the sensor array including a plurality of resilient members each having a tissue piercing distal portion, at least one of the plurality of resilient members being positionable in the elongated delivery device in a compacted state and deployable with curvature into tissue from the elongated delivery device in a deployed state, at least one of the plurality of resilient members including an optical sensor operatively connected to function as an emitter and a detector, the sensor array having a geometric configuration adapted to volumetrically sample tissue at a tissue site to differentiate or identify tissue at the tissue site, an optical switching device to switch a mode of said optical sensor, and at least some of the plurality of resilient members being electrodes which can be coupled to an RF energy source for ablating tissue when electrical energy is supplied to the electrodes from the source; positioning said apparatus at a target tissue site; distinguishing a tissue type utilizing the sensor array to measure a spectral profile of at least one portion of the tissue site; deploying said electrodes, thus to define an ablation volume that includes at least a portion of the tumor volume, delivering energy to said electrodes to ablate or necrose at least a portion of the tumor volume; and determining an amount of tumor volume ablation utilizing the sensor array.