Patent ID: 8082021
Filing Date: 2011-12-20
Classification: A61B,G01R

Abstract:
1. A method for locating a catheter, the method comprising: providing a pressure sensitive device and a piezoelectric device attached to a body of a catheter; providing a resonant circuit coupled to the pressure sensitive device and the piezoelectric device of the catheter, the resonant circuit having a resonant oscillating frequency; applying a first pressure on the piezoelectric device, the first pressure applied on the piezoelectric device causing the piezoelectric device to generate a current in and cause the resonant circuit to oscillate; applying a second pressure on the pressure sensitive device, the second pressure applied on the pressure sensitive device changing the resonant frequency of the resonant circuit; detecting the oscillation of the resonant circuit; and determining location of the catheter based on the oscillation of the resonant circuit.