Back to results
US 8,435,287 B2Granted
Stent and method for fabricating the same
AssigneesToyo Advanced Technologies Co., Ltd., Japan Stent Technology Co., Ltd.
InventorsTatsuyuki Nakatani, Keishi Okamoto, Shuzo Yamashita, Ikuo Komura, Koji Mori
Life of this patent
Estimating the term…
Abstract
A stent includes a tubular stent body 11, a diamond-like carbon film 12 formed on the surface of the stent body 11 and having an activated surface, and a polymer layer 13 immobilized on the surface of the diamond-like carbon film. The polymer layer 13 contains a drug 14 having an effect to prevent restenosis, and the drug 14 is gradually released from the polymer layer 13.
Claims14
A stent comprising:
- a tubular stent body;
- a diamond-like carbon film formed on a surface of the stent body and the surface of the diamond-like carbon film as an activated site;
- and
- a polymer that is immobilized on the surface of the diamond-like carbon film, contains an anti-restenosis drug and gradually releases the drug, wherein
- a surface portion of the diamond-like carbon film has a hydrophilic functional group,
- the hydrophilic functional group is bonded to a carbon atom included in the diamond-like carbon film, and
- the diamond-like carbon film has a thickness not less than 20 nm and not more than 80 nm.
4 more elements
Dependencies are inferred from the claim text.