×

Apparatus for determining a location in a body using a catheter and method of using such catheter

  • US 7,223,247 B2
  • Filed: 11/01/2003
  • Issued: 05/29/2007
  • Est. Priority Date: 11/01/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method of using an esophageal catheter, having a lumen, comprising the steps of:

  • determining an esophageal location in a patient having an esophagus, comprising the steps of;

    passing a distal end of said catheter through an esophagus and a lower esophageal sphincter into a stomach of a patient;

    introducing a flow of gas having a constant pressure to a proximate end of said lumen of said esophageal catheter;

    measuring a lumen pressure of said gas in said lumen;

    pulling back said distal end of said catheter from said patient;

    noting an increase in said lumen pressure;

    noting a subsequent decrease in said lumen pressure;

    identifying an upper boundary of said lower esophageal sphincter based upon said decrease; and

    establishing said esophageal location relative to said upper boundary of said lower esophageal sphincter; and

    anchoring a capsule to said esophagus with said catheter.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×