Venous reservoir with improved inlet configuration and integral screen for bubble removal

A blood reservoir device comprising:

• a generally flexible blood collection chamber having;
• (a) an inlet portion;
• and
• (b) a main portion;
• said inlet portion and said main portion being fluidly connected to one another such that blood may pass therebetween;
• a blood inflow tube fluidly connected to the inlet portion of the blood collection chamber;
• a blood outflow tube fluidly connected to the main portion of the blood collection chamber;
• at least one air vent tube fluidly connected to the blood collection chamber to vent air therefrom;
• said collection chamber inlet portion having a first blood entry location where blood flows into the inlet portion and a second blood departure location where blood flows out of the inlet portion into the main portion of said collection chamber, said inlet portion being sized and configured such that the cross-sectional area of said inlet portion gradually increases from said first location to said second location so that blood flowing between the first location and the second location is generally laminar and free of excessive turbulence.