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Patent Searching and Data


Title:
INJECTION NEEDLE ASSEMBLY AND DRUG INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/040263
Kind Code:
A1
Abstract:
Provided are an injection needle assembly and drug injection device which reduce the amount of drug residue as a result of a structure which does not require precise adjustment of the position of the base end of a needle tube with respect to a needle hub. An injection needle assembly (2) comprises a needle tube (5) which has a needle tip (5A) for puncturing the skin, a needle hub (6), and an elastic member (7). The needle hub (6) comprises a first member (11) for holding the needle tube (5), and a second member (12) for insertion of an evacuation part (52) of a syringe (3). The elastic member (7) is disposed inside the second member (12) and adheres in a liquid-tight manner to the inside surface of the second member, and the elastic member (7) has a through hole (45) through which the needle tube (5) is allowed to pass.

Inventors:
YOKOTA TAKAYUKI (JP)
IWASE YOICHIRO (JP)
HISHIKAWA YOSHINORI (JP)
TAKAHASHI TSUKASA (JP)
Application Number:
PCT/JP2010/066133
Publication Date:
April 07, 2011
Filing Date:
September 17, 2010
Export Citation:
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Assignee:
TERUMO CORP (JP)
YOKOTA TAKAYUKI (JP)
IWASE YOICHIRO (JP)
HISHIKAWA YOSHINORI (JP)
TAKAHASHI TSUKASA (JP)
International Classes:
A61M5/32; A61M5/178
Foreign References:
US5964737A1999-10-12
JP2007528281A2007-10-11
JP2001299909A2001-10-30
JP2005087521A2005-04-07
JPS6128629U1986-02-20
JP2006116217A2006-05-11
Other References:
See also references of EP 2484398A4
Attorney, Agent or Firm:
Shin-yu International Patent Firm (JP)
Patent business corporation Nobutomo international patent firm (JP)
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