发明授权
US08403834B2 Automatic return syringe with ventilation paths for air and suction ports
失效
自动返回注射器，带有空气和吸入口的通风路径
- 专利标题： Automatic return syringe with ventilation paths for air and suction ports
- 专利标题（中）： 自动返回注射器，带有空气和吸入口的通风路径
-
申请号： US12543317申请日： 2009-08-18
-
公开(公告)号： US08403834B2公开(公告)日： 2013-03-26
- 发明人: Kenji Yamane
- 申请人： Kenji Yamane
- 申请人地址： JP Tokyo
- 专利权人： FUJIFILM Corporation
- 当前专利权人： FUJIFILM Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2008-213919 20080822; JP2008-213920 20080822
- 主分类号： A61B1/12
- IPC分类号： A61B1/12 ; A61M5/00 ; A61M5/30 ; A61M5/20
摘要：
The inside of a cylindrical body is divided into two parts, that is, a first and a second chamber, and in a piston body, a first ventilation hole and a first ventilation path of a pushing portion are formed so as to communicate with the first chamber and a second ventilation hole and a second ventilation path of the pushing portion are formed to communicate with the second chamber, and a spring for returning the piston body to its original position is provided. By pressing the pushing portion while closing the first ventilation port so as to advance the piston body, air is supplied through a syringe port on the first chamber, while by pressing the pushing portion while closing the second ventilation port, air is supplied through the syringe port on the second chamber, and by releasing the pushing operation, the piston body automatically returns to the original position.