Patent ID: 7881777

Claim:
A device for monitoring movement of a fluorescent dye contained in blood moving through a cardiovascular bypass graft and vasculature connected to the graft of a subject during a surgical procedure, the device comprising: an illumination source emitting radiation of which a portion is absorbable by the moving fluorescent dye; a camera having an image capturing device configured to capture images of fluorescent radiation emitted from the fluorescent dye moving through the bypass graft and connected vasculature while the subject's heart is beating, at an acquisition rate of at least 15 angiographic images per second, the captured images including at least an optimal image of fluorescent dye initially moving through the bypass graft and connected vasculature, as well as images leading and trailing the optimal image; wherein the fluorescent dye has a peak absorption in the range of 800 to 850 nm; and a display device that transforms the captured images into viewable images.