Peristaltic pump rotor, stator and roller arrangement

Abstract

The invention provides a rotor for a peristaltic pump, the rotor comprising a body for rotation about an axis, the body having a first side and a second side, the body supporting a plurality of spaced first rollers extending from the body on the first side, the first rollers positioned at a first common radius from the axis, the body further supporting a plurality of spaced second rollers extending from the body on the second side, the second rollers positioned at a second common radius from the axis. The invention extends to a peristaltic pumping unit comprising such a rotor assembled with a first stator and a second stator, the first stator having one or more compressible fluid channels arranged to be compressed by said first rollers and the second stator having one or more compressible fluid channels arranged to be compressed by said second rollers. The invention also concerns a stator for a peristaltic pump, having a body with a planar surface and two or more fluid channels, each fluid channel having a compressible arcuate portion on or in the planar surface of the stator, the arcuate portions arranged to be compressed by a plurality of rollers mounted on a rotor, the arcuate portions each connecting to further portions of the fluid channel extending in a direction away from the planar surface such that the fluid channels take a three dimensional path within the body of the stator.

Dependencies are inferred from the claim text.