Patent ID: 9194792
Filing Date: 2015-11-24
Classification: A61B,A61M,G01N

Abstract:
1. A blood chamber connected to an extracorporeal tube for optically monitoring blood flowing through the extracorporeal tube, the chamber comprising: a chamber body forming an internal blood flow cavity which provides flow path for the flowing blood and includes a flat viewing area for optical monitoring of the blood using a photoemitter and a photodetector; a portion of the chamber body outside the flat viewing area tinted blue and opaque to red light and otherwise transparent to visible light, wherein the blue-tinted portion of the chamber body is configured to attenuate red light out of ambient light that enters the internal blood flow cavity through the chamber body; opposing lenses of clear material disposed in the flat viewing area of the chamber body for transmitting light from the photoemitter through the internal blood flow cavity; and a peripheral wall extending around each of the opposing lenses for mating with a clip that includes the photoemitter and the photodetector.