Coaxial catheter instruments for ablation with radiant energy
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United States of America Patent
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May 21, 2013
Grant Date -
May 10, 2012
app pub date -
Jan 18, 2012
filing date -
Sep 9, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A cardiac ablation instrument capable of removing blood from a treatment area is provided. The instrument includes a catheter configured to deliver a distal end thereof to a patient's heart. The instrument can also include an expandable element coupled to the distal end of the catheter wherein the expandable member is configured to be positioned adjacent a target area thereby defining a treatment area between the expandable member and the target area. Further, the instrument can include an irrigation mechanism configured to dispense an irrigation fluid from the catheter thereby displacing blood from the treatment area. Additionally, the instrument includes an energy emitter configured to deliver energy to tissue within the treatment area. The instrument can also include a contact sensor configured to determine the presence of such blood within the treatment area. Methods for ablating tissue are also provided.
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