Abstract: The invention relates to a peristaltic pump (6) for pumping viscous media, and comprises a housing (6A, 6B) having a wall (12) against which a hose (25) is placed, a shaft (7) that is centrally positioned in the housing and that carries a roller arm (13) having a roller (14) adapted to roll against and at the same time locally compress the hose (25) against the wall (12). According to the invention a guide path (35) for the hose and impregnated with lubricant is arranged in the housing of the pump. The invention also concerns an application of such a pump, a guide path for use in such a pump and a method of performing lubrication therein.