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RENAL NERVE ABLATION USING MILD FREEZING AND MICROWAVE ENERGY
RENAL NERVE ABLATION USING MILD FREEZING AND MICROWAVE ENERGY
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机译:轻度冷冻和微波能量消融肾神经
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摘要
A catheter arrangement includes a flexible shaft having a length sufficient to access a patient's renal artery relative to a percutaneous access location. A cooling arrangement is provided at a distal end of the shaft and dimensioned for deployment within a renal artery. The cooling arrangement is configured to freeze tissue of a wall of the renal artery while target tissue adjacent the renal artery wall including perivascular renal nerve tissue remains unfrozen. A microwave emitter is configured to propagate microwave energy through the frozen renal artery wall to heat the unfrozen target tissue to a temperature sufficient to ablate perivascular renal nerve tissue included within the target tissue with no or negligible thermal damage to at least an inner wall of the renal artery.
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