| 摘要 |
Disclosed is a peristaltic pump 2 comprising a rotor 4, a track assembly 10 spaced from the rotor to receive n tubes 12 therebetween, where n=2m with m a positive integer ≥ 2. The tubes are manifolded to one another at a discharge port. One of the rotor and the track comprises an occlusion surface for each of the tubes. The occlusion surfaces are located at n different angular positions which offset pulsations associated with each tube so as to reduce the overall pulsation at the discharge port. The angular offset between each occlusion surface is substantially equal to the swept volume of the occlusion surface divided by the number of tubes. The track assembly may comprise track sections each defining one of the occlusion surfaces. The rotor may comprise a plurality of rollers. The offset of each occlusion surface causes the pulses from the tubes to be out of phase such that they destructively interfere. |
