Title:
INJECTION NEEDLE
Document Type and Number:
WIPO Patent Application WO/2015/098645
Kind Code:
A1
Abstract:
An injection needle provided with a needle tube having a discharge opening for a treatment liquid at the needle tip thereof, the needle tube having a puncture tube (32) having a blade surface in which the discharge opening (32D) is formed, and a main needle tube (31) thicker than the puncture tube (32), the puncture tube (32) being provided in a distal-end part of the main needle tube (31). The puncture tube (32) satisfies the dimensional conditions of having an outside diameter of 70 µm or less and an inside diameter of 40 µm or less. The inclination angle θ of the blade surface (32C) with respect to the center axis of the puncture tube satisfies the condition 30° <θ ≤ 45°.
Inventors:
KADONOSONO KAZUAKI (JP)
FUTAMURA HIDEYUKI (JP)
FUTAMURA HIDEYUKI (JP)
Application Number:
PCT/JP2014/083383
Publication Date:
July 02, 2015
Filing Date:
December 17, 2014
Export Citation:
Assignee:
UNIV YOKOHAMA CITY (JP)
International Classes:
A61M5/32; A61M5/158
Domestic Patent References:
| WO2013056588A1 | 2013-04-25 |
Foreign References:
| JP2002291884A | 2002-10-08 | |||
| JP2008154842A | 2008-07-10 | |||
| JP2002291883A | 2002-10-08 | |||
| JPH03503373A | 1991-08-01 | |||
| JP2001502211A | 2001-02-20 | |||
| JP2006280503A | 2006-10-19 | |||
| JP2004290542A | 2004-10-21 | |||
| JP2012230450A | 2012-10-18 |
Other References:
See also references of EP 3088027A4
Attorney, Agent or Firm:
ANIYA Setuo et al. (JP)
Ani store Setsuo (JP)
Ani store Setsuo (JP)
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