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In a blood reservoir comprising a container casing defining a space for accommodating blood, the casing having a generally rectangular contour defining a pair of top and bottom sides and a pair of laterally opposed sides, provided that the casing assumes a vertically upright attitude, an inlet port

In a blood reservoir comprising a container casing defining a space for accommodating blood, the casing having a generally rectangular contour defining a pair of top and bottom sides and a pair of laterally opposed sides, provided that the casing assumes a vertically upright attitude, an inlet port is disposed in one lateral side of the casing for introducing blood into the space, an outlet port is disposed in the bottom side of the casing for discharging blood from the space, and a vent port disposed in the top side of the casing in fluid communication with the space. In another form, a partition separates the space into upper and lower compartments, and apertures are formed in the partition for allowing partial fluid communication between the compartments. The inlet port and the vent port are in communication with the upper compartment, and the outlet port is in communication with the lower compartment.

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A blood reservoir, comprising: a container casing defining a space for accommodating blood, said casing having a generally rectangular contour in a vertical plane defining a pair of upper and lower sides each of a length L and a pair of laterally opposed sides each of a height H when said casing ass

A blood reservoir, comprising: a container casing defining a space for accommodating blood, said casing having a generally rectangular contour in a vertical plane defining a pair of upper and lower sides each of a length L and a pair of laterally opposed sides each of a height H when said casing assumes a vertically upright attitude, an inlet port disposed in at least one of the laterally opposed sides of said casing for introducing blood into said space, said inlet port extending into said case horizontally a distance of L1 and having a center axis spaced apart from the lower side of said casing by a distance of H1, an outlet port disposed in the lower side of said casing for discharging blood from said space, a center axis of said outlet port being spaced apart from the other one of said laterally opposed sides by a distance of L2, and a vent port disposed in the upper side of said casing in fluid communication with said space; wherein said inlet port comprises a cylindrical conduit extending from the exterior into said space through the one lateral side of said casing, and the portion of said conduit in the casing includes a closed distal end and a plurality of apertures formed in an adjoining cylindrical wall thereof for introducing blood into said space in a dispersed manner, and the following dimensional relationships are established: L1/L is in the range of about 0.1 to 0.3; L2/L is in the range of about 0.1 to 0.3; and H1/H is in the range of about 0.3 to 0.6.