Patent ID: 8172799
Filing Date: 2012-05-08
Classification: A61M,F04B

Abstract:
1. A medical fluid delivery system comprising a volumetric pump, the pump comprising at least one first piston inside a first hollow cylindrical part, said pump having at least one inlet port through which a medical fluid can flow into at least one pump chamber, and at least one outlet port through which the medical fluid can be expelled, at least one second piston being positioned opposite to the first piston inside a second hollow cylindrical part, both cylindrical parts being assembled end-to-end facing each other to form a housing, the housing being ultimately driven by a drive link in a bidirectional linear movement to cause sliding between the housing and the pistons along an axis of said pistons, a disc being mounted midway inside said housing, said disc comprising fluid ports, the disc including a receptacle to receive a drive member, wherein linear movement of the drive member causes bidirectional angular movement of the disc to selectively align the disc fluid ports with the inlet and outlet ports in a synchronized fashion with the bidirectional linear movement of the housing to provide a substantially continuous delivery of medical fluid to a patient, wherein the medical fluid comprises at least a contrast medium.