HYDROPHILIC POLYMER COATING FOR AND WHICH IS A COMPONENT OF MEDICAL APPARATUS, NAMELY, OXYGENATORS WITH HARDSHELL RESERVOIR, OXYGENATORS WITH INTEGRATED HEAT EXCHANGER AND ARTERIAL RESERVOIR, OXYGENATORS WITH INTEGRATED HEAT EXCHANGER, CARDIOTOMY RESERVOIRS, VENOUS RESERVOIRS, BLOOD PUMPS, ARTERIAL FILTERS, AND PARTS AND FITTINGS FOR THE AFORESAID GOODS