Patent ID: 8297954
Filing Date: 2012-10-30
Classification: F04B

Abstract:
1. A peristaltic pump device comprising: a platen having a platen surface; a tube positioned adjacent to the platen surface; a cam configured for rotation about a rotational axis, said cam having a cam surface that is spaced apart from the platen surface; and a plurality of fingers, each finger having an occluder nearer the tube, each finger also having (i) a first spring for urging the finger away from the tube and (ii) a longitudinal axis that is substantially parallel to the rotational axis of the cam, said fingers being in engagement with the cam surface such that, as the cam rotates about the rotational axis, the fingers will move axially back and forth, sequentially compressing the tube against the platen surface and thereby causing peristaltic movement of fluid through the tube.