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

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Horton, Kenneth W., Hathaway, Peter
• Primary Examiner(s): SHI, KATHERINE MENGLIN
• Application Number:
  US12/267,723
• Publication Number:
  US 20090124999A1
• Time in Patent Office: 2,115 Days
• Field of Search: 606/185, 604/164.01, 604/514, 604/93.01, 604/96.01, 604/99.04, 604/516, 604/264, 128/898
• US Class Current: 604/514
• CPC Class Codes: A61B 2017/00818 Treatment of the gastro-intestinal system
• CPC Class Codes: A61M 13/003 Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/0039 characterized by lumina being arranged coaxially
• CPC Class Codes: A61M 2025/004 characterized by lumina being arranged circumferentially
• CPC Class Codes: A61M 2025/0175 having telescopic features, interengaging nestable members movable in relations to one another
• CPC Class Codes: A61M 2210/105 Oesophagus
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters

Abstract

A duel lumen catheter is provided for use in minimally invasive surgery. The catheter generally includes a first tube defining an operative lumen and a second tube terminating proximally of the first tube and defining an inflation lumen. In one embodiment, the first and second tubes are concentric. In an alternative embodiment, the first and second tubes are separate and extend parallel to each other. The first and second tubes are provided with inflation ports adjacent their respective distal ends. There is also provided a method for performing minimally invasive surgery by inserting the catheter through the esophagus of a patient, insufflating the stomach and performing a surgical operation through the catheter and external to the stomach.

Claims

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.

2. The method as recited in claim 1, further comprising the step of pressurizing the interior of the stomach by forcing a fluid through the inflation lumen.

3. The method as recited in claim 1, further comprising the step of pressurizing an area outside of the stomach by forcing a fluid through the operative lumen.

4. The method as recited in claim 1, further comprising the step of puncturing the wall of the stomach with the distal end of the first tube.