Patent ID: 7217108

Claim:
A peristaltic hose pump for pumping fluid through a pump hose, the peristaltic pump comprising: a rotatable shaft extending parallel to the pump hose and comprising several eccentric discs each eccentric disc carrying a bearing; a sealing diaphragm disposed between the rotatable shaft and the pump hose, and a plurality of linearly guided pump fingers each engaging a portion of the pump hose at one end and connected at another end to one of a plurality of connecting rods, wherein: the connecting rods are rotatably engaged with the bearings on the eccentric discs to be driven transversely to the pumping hose by the eccentricity of the discs upon rotation of the shaft; the pump fingers are arranged at the side of the sealing diaphragm facing the pump hose, and the connecting rods pass through the sealing diaphragm so that the connecting rods may move transverse to the rotation of the rotatable shaft and so that the sealing diaphragm seals the rotating shaft from the pumping hose.