An ablation device, comprising: (a) an elongated cannula having a proximal end and a distal end, said cannula defining an internal lumen within said cannula and a cannula axis; (b) a conductor (58, 66) extending along the length of said lumen, said conductor having a proximal end proximate the proximal end of said cannula, and a distal end proximate the distal end of said cannula; (c) a plurality of ablation stylets each having a proximal end and a distal end, and each stylet coupled at its respective proximal end to the distal end of said conductor (58, 66), said stylets comprising a deflectable material, said conductor together with said stylets being mounted for axial movement; (d) a trocar point defined proximate the distal end of said cannula, wherein said trocar point is defined at the distal end of a trocar member, said trocar member having an outside surface, said cannula having an outside surface, said trocar member having a proximal end secured proximate to the distal end of said elongated cannula, and the outside surface of said cannula and the outside surface of said trocar point defining a trocar surface; (e) a deflection surface positioned between said trocar point and said proximal end of said cannula, the deflection surface being configured and positioned to deflect, in response to axial movement of said stylets in a direction from said proximate end of said cannula to said distal end of said cannula, at least some of said stylets in a direction laterally with respect to said cannula axis in different directions along substantially straight paths, said paths defining an ablation volume, wherein each of said stylets are configured to assume a substantially straight configuration in the absence of external forces, and wherein the deflection surface comprises a number of ramps defined proximate the proximal end of the trocar point, the distal ends of said stylets being positionable proximate to said ramps and within said trocar surface; and (f) an anchor mounted for movement between an internal position disposed within a trocar surface and an anchoring position extending laterally from said trocar surface through points external of said lumen, wherein said points are separated from said deflection surface by an anchor cover and are positioned proximally of said deflection surface such that when said anchor is deployed, said anchor extends proximally of the anchor cover and said ablation stylets. (a) an elongated cannula having a proximal end and a distal end, said cannula defining an internal lumen within said cannula and a cannula axis; (b) a conductor (58, 66) extending along the length of said lumen, said conductor having a proximal end proximate the proximal end of said cannula, and a distal end proximate the distal end of said cannula; (c) a plurality of ablation stylets each having a proximal end and a distal end, and each stylet coupled at its respective proximal end to the distal end of said conductor (58, 66), said stylets comprising a deflectable material, said conductor together with said stylets being mounted for axial movement; (d) a trocar point defined proximate the distal end of said cannula, wherein said trocar point is defined at the distal end of a trocar member, said trocar member having an outside surface, said cannula having an outside surface, said trocar member having a proximal end secured proximate to the distal end of said elongated cannula, and the outside surface of said cannula and the outside surface of said trocar point defining a trocar surface; (e) a deflection surface positioned between said trocar point and said proximal end of said cannula, the deflection surface being configured and positioned to deflect, in response to axial movement of said stylets in a direction from said proximate end of said cannula to said distal end of said cannula, at least some of said stylets in a direction laterally with respect to said cannula axis in different directions along substantially straight paths, said paths defining an ablation volume, wherein each of said stylets are configured to assume a substantially straight configuration in the absence of external forces, and wherein the deflection surface comprises a number of ramps defined proximate the proximal end of the trocar point, the distal ends of said stylets being positionable proximate to said ramps and within said trocar surface; and (f) an anchor mounted for movement between an internal position disposed within a trocar surface and an anchoring position extending laterally from said trocar surface through points external of said lumen, wherein said points are separated from said deflection surface by an anchor cover and are positioned proximally of said deflection surface such that when said anchor is deployed, said anchor extends proximally of the anchor cover and said ablation stylets.