Pumpe für biologische Flüssigkeiten

摘要

The pump housing (1) contains an elastic tube (3) through which the biological liquid is passed, and a working head (5) which rotates in the direction of the fluid flow and has rollers to apply pressure to the tube. The rollers are in pairs (7, 8), positioned so that the first roller in each pair leaves a greater space between its surface and the housing than the following one. The pump contains a flexible insert between the tube and the rollers which compresses it, and the rollers are connected to a working head by carriers with adjusting cams to control the pressure of the rollers against the tube. The cams are located coaxially with the working head and interact with the rollers.