发明授权
- 专利标题： Automatic self-injection device
- 专利标题（中）： 自动自动注射装置
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申请号： US191263申请日： 1994-02-02
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公开(公告)号： US5478316A公开(公告)日： 1995-12-26
- 发明人: Ralf V. Bitdinger , Jean-Pierre Grimard , Bernard Sams , Donald D. Solomon
- 申请人： Ralf V. Bitdinger , Jean-Pierre Grimard , Bernard Sams , Donald D. Solomon
- 申请人地址： NJ Franklin Lakes
- 专利权人： Becton, Dickinson and Company
- 当前专利权人： Becton, Dickinson and Company
- 当前专利权人地址： NJ Franklin Lakes
- 主分类号： A61M5/20
- IPC分类号： A61M5/20 ; A61M5/24 ; A61M5/31 ; A61M5/32
摘要：
A device for automatically injecting a material into the body is disclosed. The device includes a drive assembly and a syringe assembly which is mounted to the drive assembly. The drive assembly includes a drive rod, a driver releasably coupled to the drive rod, and a constant force spring which urges the drive rod towards the syringe assembly. The spring first urges the coupled drive rod and driver along the axis of the device, causing the skin to be penetrated by the needle of the syringe assembly. The drive rod is then decoupled from the driver. The spring continues to urge the drive rod in the axial direction, whereby the drive rod engages a piston in the syringe assembly and causes the displacement of the material therein.