Patent ID: 7955057
Filing Date: 2011-06-07
Classification: A61B,Y10T

Abstract:
1. A medical pump comprising: a pump unit which is assembled as a single use article and which comprises two pistons and piston rods for displacing the pistons in allocated cylinders defined by the pump unit; a pump actuating device comprising at least one controllable drive device and a motor control adapted to actuate the pump unit by displacing the two piston rods alternately; holding devices which are adapted to open and close for reversible attachment of the pump unit to the pump actuating device; and clutch means which are adapted to open and close for reversible connection of the two piston rods to the at least one controllable drive device, wherein the at least one controllable drive device of the pump actuating device is further adapted to actuate the opening or closing of at least one of said holding devices or said clutch means, and wherein said at least one controllable drive device for said pump actuating device comprises motor means which operates to displace said pistons such that said pistons are displaced alternately during operation of the pump unit and synchronously during opening or closing of the holding device and/or the clutch devices.