Ablation probe for delivering fluid through porous structure
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United States of America Patent
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Aug 9, 2011
Grant Date -
May 31, 2007
app pub date -
Oct 17, 2006
filing date -
Feb 4, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Ablation probes are provided for perfusing the tissue, while the tissue is ablated. The ablation probe comprises an elongated shaft and an ablative element, such as a needle electrode. The ablation probe further comprises a lumen that extends through the probe shaft, which will be 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. For example, the distal end of the shaft, or the entirety of the shaft, can be composed of the porous structure. 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.
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