Patent ID: 6683690
Filing Date: 2004-01-27
Classification: A61N

Abstract:
In a transfer device useable in a system for intraluminal a treatment of a selected site in a body of a patient by at least one treating element having known reflectances for lights of different wavelengths advanced through a lumen in the transfer device into a lumen of a separate catheter, a system for determining the presence or absence of said treating element at a targeted location comprising:a power source; a first light source optically connected to the targeted location for emitting a light having a first wavelength; a second light source optically connected to the targeted location for emitting a light having a second wavelength; a first photosensor optically connected to the targeted location for measuring the light reflected off the targeted location and creating a signal corresponding thereto; a window detector for determining whether said created signal is within a predetermined band corresponding to a signal which would be created by light of first and second wavelengths being reflected off the treating element; and at least one indicator light that is activated if said created signal is within said predetermined band.