发明授权
- 专利标题： Single-use pneumatic safety syringe providing gas-driven needle retraction
- 专利标题（中）： 一次性气动安全注射器提供气动针回缩
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申请号： US11219201申请日： 2005-09-02
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公开(公告)号： US07811259B2公开(公告)日： 2010-10-12
- 发明人: John Klippenstein
- 申请人： John Klippenstein
- 申请人地址： CA Calgary
- 专利权人： L.O.M. Laboratories Inc.
- 当前专利权人： L.O.M. Laboratories Inc.
- 当前专利权人地址： CA Calgary
- 代理机构： Oyen Wiggs Green & Mutala LLP
- 主分类号： A61M5/00
- IPC分类号： A61M5/00
摘要：
A pneumatic retractable syringe has a plunger having an interior retraction lumen. The plunger and syringe barrel have cooperating locking elements so that the plunger is locked after use within the syringe barrel. After injection of medicament is completed, the needle is retracted into the lumen by compressed gas that is released from a gas cell within the syringe when the gas cell is ruptured just before the plunger reaches the end of its downstream path of travel.