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US 2011/0060403 A9Published application
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
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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.
Claims19
A stent comprising:
- a tubular stent body;
- a diamond-like carbon film formed on a surface of the stent body and having an activated surface;
- 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.
1 more element
A method for fabricating a stent comprising:
- a diamond-like carbon film forming step of forming a diamond-like carbon film on a surface of a stent body;
- a surface activation step of producing reactive sites in a surface portion of the diamond-like carbon film;
- and
- a polymer layer forming step of immobilizing a polymer containing a drug onto a surface of the diamond-like carbon film after the surface activation step.
1 more element
Dependencies are inferred from the claim text.