SYRINGE-TYPE EJECTION DEVICE

Title:

SYRINGE-TYPE EJECTION DEVICE

Document Type and Number:

WIPO Patent Application WO/2019/225226

Kind Code:

A1

Abstract:

This syringe-type ejection device (1) is provided with: a barrel (10) and a nozzle (40); packing (60) disposed therebetween; and a plunger (50) disposed inside the nozzle (40). The nozzle (40) is connected to a connection section (12) provided at a leading-end of the barrel (10). The nozzle (40) has a first facing surface (42a) facing the leading-end surface (12a) of the connection section (12), and a second facing surface (42b) facing an outer circumferential surface (12b) of the connection section (12). An annular recessed portion (12c) is provided on the outer circumferential surface (12b). A first annular protrusion portion (42c) and a second annular groove portion (42d) are provided on the second facing surface (42b). The packing (60) is axially compressed by the leading-end surface (12a) and the first facing surface (41a) when the annular recessed portion (12c) and the first annular protrusion portion (12b) are fitted together. The second annular protrusion portion (42d) is brought into contact with and pressed against the outer circumferential surface (12b) of the connection section (12) all the way around in the circumferential direction.

Inventors:

YABE YUKIHIRO (JP)
ADACHI KAZUTO (JP)

Application Number:

PCT/JP2019/016336

Publication Date:

November 28, 2019

Filing Date:

April 16, 2019

Export Citation:

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Assignee:

NIPRO CORP (JP)

International Classes:

A61M11/00

Domestic Patent References:

WO2013125555A1

2013-08-29

Foreign References:

JPH11114065A	1999-04-27
JP2014140616A	2014-08-07
JP2014140588A	2014-08-07
JP2013031599A	2013-02-14
JP2017159096A	2017-09-14
US20120126035A1	2012-05-24
JP2001137344A	2001-05-22

Other References: