Title:
SYRINGE
Document Type and Number:
WIPO Patent Application WO/2016/170825
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a next-generation prefilling syringe provided with a safety mechanism for preventing needlestick injuries, while reducing the number of components and reducing the cost. In the syringe according to the present invention, resilient engaging pieces 11 of a cover 6, which are in a stowed position, and an injection needle 5 engage with one another in such a way as to prevent the injection needle 5 from being pulled out from the resilient engaging pieces 11 to a base end side, and said engagement is released by the resilient engaging pieces 11 deforming so as to expand diametrically. Further, a plunger 4 is provided integrally with a deformation preventing portion 41 which covers an outer periphery of the plurality of resilient engaging pieces 11 in such a way as to prevent the resilient engaging pieces 11 from expanding diametrically and thereby releasing the engagement between the resilient engaging pieces 11 and the injection needle 5.
Inventors:
OGAWA YUKIHIRO (JP)
TANAKA YUJI (JP)
TANAKA YUJI (JP)
Application Number:
PCT/JP2016/054239
Publication Date:
October 27, 2016
Filing Date:
February 15, 2016
Export Citation:
Assignee:
TAISEI KAKO CO (JP)
International Classes:
A61M5/28; A61M5/32; A61M5/34; A61M5/50
Domestic Patent References:
| WO2014175237A1 | 2014-10-30 | |||
| WO2008072715A1 | 2008-06-19 |
Foreign References:
| JP2013544165A | 2013-12-12 | |||
| JP2013500745A | 2013-01-10 |
Other References:
See also references of EP 3287164A4
Attorney, Agent or Firm:
PROWESS IP PARTNERS (JP)
Patent business corporation Preuss IP partners (JP)
Patent business corporation Preuss IP partners (JP)
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