Apparatus and method for tissue ablation with near-field cooling
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United States of America Patent
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Aug 18, 2015
Grant Date -
Sep 9, 2010
app pub date -
Mar 9, 2009
filing date -
Mar 9, 2009
priority date (Note) -
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Abstract
A tissue ablation system facilitates lesioning deep tissue while preventing damage to superficial tissue and includes a probe having a distal end portion, at least one transducer carried on the distal end portion, and at least one acoustically transparent heat removal element thermally coupled to a target tissue within the beam path of the transducer. The transducer delivers acoustic energy to the tissue through the heat removal element in order to ablate the tissue; the heat removal element removes sufficient thermal energy from the tissue volume to prevent thermal necrosis in superficial tissue. The heat removal element may be a heat sink or a convective element. An optional temperature sensor provides advisory data to a practitioner and/or is coupled to a feedback control system operable to control delivery of acoustic energy to the tissue and/or a rate of thermal energy removal therefrom.
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