Toyo Advanced Technologies Co., Ltd.

Japan Stent Technology Co., Ltd.

Kabushiki Kaisha Pilot Corporation

Keishi Okamoto

Tatsuyuki Nakatani

Yuki Nitta

Shuzo Yamashita

Yoshinori Abe

Ikuo Komura

Koji Mori

Satoru Ando

Hiroki Nikawa

Takumi Kajiwara

Akira Mochizuki

Kouichi Takayama

Kazuo Sugiyama

Hirotaka Masuda

Seichiyou Makihira

Yuichi Mine

Kunihiro Toyota

Kohei Shiraishi

An implant material includes: a base material; and a carbonaceous filmprovided on a surface of the base material. The carbonaceous filmincludes carbon atoms, oxygen atoms, and nitrogen atoms in a surface thereof, and the carbon atoms are bonded to the oxygen atoms to form carboxyl carbon and carbon having a single bond with oxygen. In the surface of the carbonaceous film, a content of nitrogen atoms is greater than or equal to 8.0 at. %, a content of carbon having a single bond with oxygen is greater than or equal to 5.4%, and a content of carboxyl carbon is less than or equal to 3.1%.

Implant material

A method for manufacturing an implant material includes preparing a base material for implant, removing moisture from a chamber in which the base material is placed, and introducing material gas as a carbon source and a silicon source into the chamber after the removal of the moisture to form a carbon thin film containing a C&#x2014;C component in which carbon atoms are bonded, and a SiC component in which carbon and silicon atoms are bonded on a surface of the base material by ionized deposition.

Method for manufacturing an implant material

A stent includes a tubular stent body, a diamond-like carbon filmformed on the surface of the stent bodyand having an activated surface, and a polymer layerimmobilized on the surface of the diamond-like carbon film. The polymer layercontains a drughaving an effect to prevent restenosis, and the drugis gradually released from the polymer layer

Stent and method for fabricating the same

A ballpoint pen tip includes a ball and a ball holder for rotatably holding the ball. The ball includes a ball body and a first carbonaceous film formed so as to cover a surface of the ball body. The first carbonaceous film has carbon atoms and oxygen atoms bonded to some of the carbon atoms. The ratio of carbon atoms bonded to oxygen atoms to the total carbon atoms at a surface of the first carbonaceous film is equal to or greater than 0.1.

Ballpoint pen tip and ballpoint pen

A diamond-like carbon film (DLC film) is formed on the surface of a base material made of an inorganic material, such as ceramics, or the like, or an organic material, such as resin, or the like. The surface of the resultant DLC film is treated with plasma, or the like, so as to be activated. Various monomers having biocompatibility, etc., are graft-polymerized to the activated surface of the DLC film, whereby a polymer layer is formed from the monomers grafted to the surface of the DLC film. Thus, the base material coated with the DLC film modified with a polymer which does not readily separate can be realized.

Method for fabricating material

A medical device includes a medial device body, and a diamond-like thin film covering the medical device body and containing silicon. The diamond-like thin film has a concentration of silicon which is lower in a surface thereof than in an interface thereof with the medical device body mentioned above, and continuously varies.

Medical device having diamond-like thin film and method for manufacturing thereof

Growing community of inventors

Hiroshima, Japan

Keishi Okamoto