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Dual lumen catheter and method for minimally invasive endoluminal surgery

  • US 8,814,846 B2
  • Filed: 11/10/2008
  • Issued: 08/26/2014
  • Est. Priority Date: 11/13/2007
  • Status: Active Grant
First Claim
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1. A method of performing a minimally invasive procedure utilizing a dual lumen catheter comprising:

  • providing a catheter having a first tube defining an operative lumen having radially oriented insufflation ports enabling insufflation via said operative lumen and a second tube extending parallel to the first tube and circumferentially sealed at the distal end of the second tube, the distal end of the second tube being positioned proximally of the distal end of the first tube, the second tube defining an inflation lumen having radially oriented insufflation ports and terminating proximally of the distal end of the first tube such that a fluid flowing through the second tube defining the inflation lumen exits only through the radially oriented insufflation ports, the first tube extending at least to a position distal from the distal end of the second tube to define a longitudinal axis extending at least to the position distal from the distal end of the second tube, the distal end of the first tube defining a portion of the first tube extending at least from the position distal from the distal end of the second tube to define an offset axis with respect to the longitudinal axis of the first tube, the offset axis defining an offset angle with respect to the longitudinal axis of the first tube;

    inserting the catheter through the esophagus of a patient so as to position a distal end of the second tube within the stomach of a patient such that a fluid flowing through the second tube exits into the stomach only through the radially oriented insufflation ports;

    advancing the catheter through the esophagus of a patient such that the radially oriented insufflation ports at the distal end of the first tube are positioned at a position offset from the radially oriented insufflation ports at the distal end of the second tube; and

    performing a surgical operation through the first tube.

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