MEDICAL INSTRUMENTS AND APPARATUS, NAMELY, INFUSION SETS, TRANSFUSION SETS, MICRODRIP SETS, DRIP CHAMBERS FOR MEDICAL SETS, TRANSFER SETS, INFUSION FILTERS, TRANSFUSION FILTERS, BLOOD FILTERS, AIR FILTERS, BLOOD DONOR SETS, SCALP VEIN SETS, CATHETERS, DIALYSIS SETS, URINAGE SETS AND ROLLER CLAMPS