A medical device is provided, comprising: an expandable tubular member comprising a plurality of elements forming a sidewall, wherein each of the elements crosses one or more other elements and a plurality of pores are formed among the elements in the sidewall; wherein an antithrombogenic material is coated over the tubular member such that there is inherently no webbing of the antithrombogenic material between any two elements.

Disclosed is a high anticoagulation ECMO and extracorporeal circulation consumable, which include the following preparation methods: S1, aminating the surface of ECMO blood circulation device and extracorporeal circulation consumables; S2, activating heparin groups; S3, heparinizing the ECMO blood circulation device and extracorporeal circulation consumables; S4, modification of enhancer. The application can produce a novel high anticoagulation extracorporeal circulation tube with low price and high biocompatibility, which expands the application in clinic.

A bio-compatible lumen bearing device such as a catheter formed of a polymeric material having a titanium surface bonded to the underlying exposed catheter surface. The titanium surface is employed in patients to improve bio-compatibility and enhance lubricity during insertion and removal.

There is provided an object, wherein there are particles on the surface of the object, wherein the amount of particles is in the interval 0.041-6 g/cm.sup.2, wherein the particles comprise palladium in an amount corresponding to 0.02-2 g/cm.sup.2, neodymium in an amount corresponding to 0.001-2 g/cm.sup.2, and gold in an amount corresponding to 0.02-2 g/cm.sup.2, and wherein the particles comprise less than 30 ppm silver, which is considered as silver free. The coating is both biocompatible and antimicrobial and does not suffer from disadvantages associated with silver since the coating is silver free. The coating shows improved action against thrombosis.

Provided is a clot adhesion preventing agent capable of suppressing adhesion of clot to the inner wall surface of a blood collection container. The clot adhesion preventing agent according to the present invention includes a polyether compound or a silicone oil, and an amino acid.