Superhydrophobic blood-repellent tubes for clinical cardiac surgery

•A superhydrophobic blood-repellent tube was developed, which efficiently delays blood coagulation time in comparison with a clinical Bioline heparin-coated tube.•This superhydrophobic blood-repellent tube has good blood-bouncing properties and biocompatibility.•The physiological mechanism underlying the ability of superhydrophobic coatings to prolong clotting time was first interpreted from the perspective of inhibiting thromboxane-A2 secretion during blood coagulation.