Patent ID: 7364563
Filing Date: 2008-04-29
Classification: A61M,G09B

Abstract:
1. A system comprising: a venous reservoir for a cardiopulmonary bypass circuit; a pressure sensor coupled within the bypass circuit near an outlet of the venous reservoir, wherein the pressure sensor generates a pressure signal representative of a sensed pressure of the bypass circuit; a flow sensor coupled within the bypass circuit that generates a flow signal representative of a fluid velocity of the fluid exiting the venous reservoir; a controller that computes a volume of blood within the venous reservoir as a function of the pressure signal and the flow signal, and outputs an indicator based on the computed volume; and a memory programmed to store a set of container profiles, wherein the controller selects one of the container profiles for the venous reservoir and computes the volume based on the selected profile, and further wherein the container profiles comprise one or more coefficients that are applied by the controller to compute the volume.