Ablation probe with fluid-based acoustic coupling for ultrasonic tissue imaging

  • US 10,420,605 B2
  • Filed: 01/22/2015
  • Issued: 09/24/2019
  • Est. Priority Date: 01/31/2012
  • Status: Active Grant
First Claim
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1. An ablation system for treating and imaging body tissue, the system comprising:

  • a probe comprising;

    an elongate probe body having a proximal section and a distal section;

    an ablation electrode coupled to the distal section of the elongate probe body, the ablation electrode comprising a conductive shell having an interior, the ablation electrode configured for delivering ablation energy to body tissue;

    a plurality of openings disposed through the ablation electrode;

    a distal insert arranged within the interior of the conductive shell, the distal insert comprising a plurality of recesses;

    a plurality of ultrasonic imaging sensors, wherein each ultrasonic imaging sensor of the plurality of ultrasonic imaging sensors is disposed within a recess of the plurality of recesses of the distal insert;

    an acoustically transparent tubular member disposed between the ultrasonic imaging sensors and the openings; and

    at least one fluid channel, wherein each fluid channel of the at least one fluid channel is interposed between an ultrasonic imaging sensor of the plurality of ultrasonic imaging sensors and an opening of the plurality of openings,a fluid source configured for delivering cooling fluid through the at least one fluid channel of the probe, the cooling fluid configured to acoustically couple the ultrasonic imaging sensors to the body tissue;

    a radio frequency generator configured for generating and supplying an electrical ablation energy to the ablation electrode of the probe configured to ablate tissue; and

    a processor configured for processing ultrasonic imaging signals received from the ultrasonic imaging sensors of the probe.

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