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BALLOON EXPANDABLE INTRAVASCULAR BASKET CATHETER

  • US 20100317921A1
  • Filed: 06/10/2010
  • Published: 12/16/2010
  • Est. Priority Date: 06/11/2009
  • Status: Abandoned Application
First Claim
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1. A balloon-expandable intravascular optical catheter, comprising:

  • an elongate body having a proximal end and a distal end;

    a distal basket section comprising a plurality of radially extendable, flexible probe arms and having a proximal end and a distal end wherein each probe arm comprises at least one optical fiber entering the probe arm and terminating at or near the most radially extendable portion of the probe arm in a side-viewing configuration or assembly to form a side-viewing optical probe element capable of transmitting and collecting light;

    a guidewire tube radially centrally disposed along the body of the catheter and passing centrally through the basket section of the catheter, the distal end of the guidewire tube comprising;

    retainers disposed circumferentially about the outer surface of the guidewire tube, each sized and configured to slideably retain the distal end of one of a probe arm, anda distal cap segment sized and configured to shroud the retainers and to permit the distal ends of the probe arms to longitudinally slide within the distal cap segment,the distal end of each probe arm slideably retained by a retainer andthe distal end of each probe arm sized to prevent it from passing in a proximal direction through the retainer in which it is slideably retained; and

    an expansion balloon circumferentially surrounding the guidewire tube within the basket section of the catheter and surrounded by the probe arms of the basket section, said expansion balloon comprising a lumen in fluid contact with at least one fluid channel running to the proximal end of the body of the catheter and being sized and configured to cause radial extension the probe arms by inflation of the expansion balloon.

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