ABLATION PROBE FOR DELIVERING FLUID THROUGH POROUS STRUCTURE

摘要

A perfusion ablation probe comprises an elongated shaft and an ablative element, such as a needle electrode, and a lumen that extends through the probe shaft, which is used to deliver an fluid to the distal end of the probe shaft for perfusion into the surrounding tissue. The ablation probe further comprises a porous structure that is associated with the distal end of the shaft in fluid communication with the lumen. Or, if the ablative element is an electrode, the electrode can be composed of the porous structure. Because the pores within the porous structure are pervasive, the fluid will freely flow out into the tissue notwithstanding that some of the pores may become clogged.