| 摘要 |
The invention relates to an infusion pump (10) for continuously conveying a fluid, comprising an inlet (20), an outlet (30), a first piston (40) movably supported in a first chamber (50), and a second piston (60) movably supported in a second chamber (70), characterized by a connecting channel (80) that connects the first chamber (50) to the second chamber (70), the first chamber (50) being connected to the inlet (20) and the second chamber (70) being connected to the outlet (30), at least one control element (90), which in a first position connects the inlet (20) to the first chamber (50) and in a second position connects the first chamber (50) to the second chamber (70) in a communicating manner, wherein in the first position the communication between the first chamber (50) and the second chamber (70) and in the second position the communication between the inlet (20) and the first chamber (50) is blocked, a controller that acts upon the first piston (40), the second piston (60), and the control element (90) so that, when the control element (90) is set in the first position, the first chamber (50) is filled while the second chamber (70) is drained by means of the outlet (30) at a predefined flow rate, and when the control element (90) is set in the second position, the first chamber (50) is drained and the second chamber (70) is filled, wherein the constant discharge by means of the outlet is maintained at the defined flow rate. |
