Syringe piston with a plurality of annular ridges of different outer diameters

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专利权人:

发明人:

申请号：

EP05026270.8

公开号：

EP1674121B1

申请日:

2005.12.01

申请国别(地区):

EP

年份:

2013

代理人:

摘要：

A rubber-made syringe piston with a film laminated on it includes a plurality of annular ridges of different outer diameters formed continuously and integrally on a sliding surface of a liquid-contacting, leading end portion of the piston. The annular ridges may preferably be different by from 0.01 to 0.2 mm from one to another in outer diameter.

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中国工程科技知识中心

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