Patent ID: 9267498
Filing Date: 2016-02-23
CPC Classification: A61M,F04B

Claim Text:
1. An infusion pump for continuously conveying a fluid, comprising an inlet, an outlet, a first piston movably supported in a first chamber, a second piston movably supported in a second chamber, a connecting channel connecting the first chamber to the second chamber, the first chamber being connected to the inlet and the second chamber being connected to the outlet, at least one control element movable between a first position and a second position wherein, when the at least one control element is in the first position, the inlet is in fluid communication with the first chamber while fluid communication between the first chamber and the second chamber is blocked and, when the at least one control element is in the second position, the first chamber is in fluid communication with the second chamber while fluid communication between the inlet and the first chamber is blocked, a controller that acts upon the first piston, the second piston, and the at least one control element so that, when the at least one control element is in the first position, the first chamber is filled while the second chamber is drained through the outlet at a predefined flow rate, and when the at least one control element is in the second position, the first chamber is drained and the second chamber is filled, wherein the infusion pump is configured such that a constant continuous discharge from the outlet is maintained at the predefined flow rate.