| abstract |
An implantable stent is coated with a material that attracts heparin and withnwhich heparin forms a bond. The stent is exposed to a heparin containing solution justnprior to implantation, or is first implanted and then exposed to heparinized blood. Asnheparin becomes detached from the stent, the implantation site is exposed to heparin tonrestore an effective level and thereby prevent thrombosis. |