Patent ID: 8825134
Filing Date: 2014-09-02
Classification: A61B,A61M

Abstract:
1. A method for localizing a catheter, the method comprising: providing a catheter electrode, C, and a plurality of reference electrodes, R determining distance values between R identifying first and second triangles based on the distance values between (1) R determining first and second orthogonal distances within the first and second triangles, respectively; identifying a first circle having a radius equal to the first orthogonal distance and a second circle having a radius equal to the second orthogonal distance; determining a position of the catheter electrode where the first and second circles substantially coincide or are within a minimum distance between the first and second circles; applying a transformation to the first and second circles to express the first and second circles in a global coordinate system; and displaying an image as a function of the position of the catheter electrode.