Patent ID: 7758492

Claim:
A method for circulating at least one blood fluid through a living organism in a pulsatile manner with a pulsatile blood pumping system comprising the steps of: providing a housing having a wall defining a generally spherical interior, the housing having at least one intake port opening in communication with said interior of said housing and at least one discharge port opening in communication with said interior of said housing through which said at least one blood fluid flows; connecting said at least one intake port opening and said at least one discharge port opening to enable the circulation of said at least one blood fluid through said living organism; rotating a first shaft mounted for rotation relative to said housing about a primary axis; rotating at least one primary vane disposed within the interior of the housing that rotates about said primary axis; providing at least one secondary vane disposed within the interior of the housing and mounted to said primary vane on a first pivotal axis; and rotating said primary vane about said primary axis with said secondary vane pivotally oscillating between alternating relatively open and closed positions with respect to said primary vane, the housing, the primary vane, and the secondary vane defining a at least one fluid chamber for containing blood fluid within the housing interior having a volume that varies as the primary vane is rotated about the primary axis.