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Steerable catheters and methods for using them

  • US 20050228452A1
  • Filed: 02/11/2005
  • Published: 10/13/2005
  • Est. Priority Date: 02/11/2004
  • Status: Abandoned Application
First Claim
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1. An apparatus for treating a condition within a patient'"'"'s heart, comprising a flexible tubular member comprising a proximal end, a distal end having a size and length for introduction into a chamber of a heart from an access location;

  • a substantially transparent expandable member carried by the distal end of the tubular member, the expandable member being expandable from a collapsed condition to an expanded condition, the expandable member being sufficiently conformable such that, in the expanded condition, the expandable member is directable against a tissue structure, thereby substantially displacing fluid between the expandable member and the tissue structure;

    an optical imaging assembly carried by the distal end of the tubular member and at least partially surrounded by the expandable member, the optical imaging assembly for imaging the tissue structure beyond the distal end through the expandable member; and

    one or more needles deployable substantially axially from the tubular member through a lumen in the expandable member for penetrating the tissue structure to treat tissue.

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