Title:
GASKET AND SYRINGE
Document Type and Number:
WIPO Patent Application WO/2004/044464
Kind Code:
A1
Abstract:
A gasket capable of providing an excellent slidability and assuring sufficient sealability and airtighteness and installed so as to be slidably moved in an outer tube (2). The gasket (3) comprises a gasket body (5) and having ring-shaped projected parts (53, 54) formed on the outer peripheral part thereof, a resin film (6) installed so as to cover the tip face (55) and the projected parts (53, 54) of the gasket body (5) and formed of a material lower in the coefficient of friction than the structure material (elastic material) of the gasket body (5), and a filler material (7) adhered to the outer surface of the resin film (6). The resin film (6) is deformed, for example, in a corrugated shape near the projected parts (53, 54) by a reaction from the inner peripheral surface (26) of the outer tube (2) to provide a small clearance between the resin film and the inner peripheral surface (26). The filling material (7) is filled in the clearance, whereby the sealability of the gasket can be maintained.
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Inventors:
TACHIKAWA KOUICHI (JP)
YUNOKI HIROYUKI (JP)
KOYAMA SHINGO (JP)
KASAI MASAAKI (JP)
YUNOKI HIROYUKI (JP)
KOYAMA SHINGO (JP)
KASAI MASAAKI (JP)
Application Number:
PCT/JP2003/014313
Publication Date:
May 27, 2004
Filing Date:
November 11, 2003
Export Citation:
Assignee:
TERUMO CORP (JP)
TACHIKAWA KOUICHI (JP)
YUNOKI HIROYUKI (JP)
KOYAMA SHINGO (JP)
KASAI MASAAKI (JP)
TACHIKAWA KOUICHI (JP)
YUNOKI HIROYUKI (JP)
KOYAMA SHINGO (JP)
KASAI MASAAKI (JP)
International Classes:
A61M5/315; (IPC1-7): F16J15/16
Domestic Patent References:
| WO2002022192A1 | 2002-03-21 |
Foreign References:
| JP2000074009A | 2000-03-07 | |||
| JPH07167305A | 1995-07-04 | |||
| US6090081A | 2000-07-18 | |||
| US4997423A | 1991-03-05 |
Attorney, Agent or Firm:
Watanabe, Mochitoshi (12-5 Iwamoto-cho 2-chom, Chiyoda-ku Tokyo, JP)
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