Title:
The cylinder piston unit of the disposable injector which improved the safety on use
Document Type and Number:
Japanese Patent JP6029469
Kind Code:
B2
Abstract:
The end face of a cylinder-piston unit has a press-in area, engaging around the mouth, and a press-on area, surrounding the press-in area. The press-in area comprises an inner web, delimiting the mouth, and an outer web. The webs delimit a recess, which surrounds the inner web and of which the depth measured parallel to the center axis of the cylinder-piston unit is at least a quarter of its width in a plane oriented normal thereto. The press-on area, at least during an injection, is offset counter to the injection direction relative to the end face of the press-in area. Moreover, the surface of the press-on area projected into a plane normal to the center axis is at least as large as the surface of the press-in area projected into the same plane.
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Inventors:
Rudolf Matush
Application Number:
JP2012518035A
Publication Date:
November 24, 2016
Filing Date:
June 17, 2010
Export Citation:
Assignee:
Ertes Roman Therapy-The Steme Age
International Classes:
A61M5/30; A61M5/31
Domestic Patent References:
| JP3207374A | ||||
| JP200295748A |
Foreign References:
| WO2007088112A1 |
Attorney, Agent or Firm:
Junji Yuda
Noriyuki Takebayashi
Noriyuki Takebayashi
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