基本信息:
- 专利标题： SYRINGE WITH RETRACTABLE NEEDLE
- 专利标题（中）：可伸缩针注射器。
- 申请号：EP93910212.0 申请日：1993-05-17
- 公开(公告)号：EP0680347A1 公开(公告)日：1995-11-08
- 发明人： JEFFREY, Peter
- 申请人： SAFE-T-LIMITED
- 申请人地址： Laurel House, Croit-Y-Quill Lonan, Isle of Man GB
- 专利权人： SAFE-T-LIMITED
- 当前专利权人： SAFE-T-LIMITED
- 当前专利权人地址： Laurel House, Croit-Y-Quill Lonan, Isle of Man GB
- 代理机构： Dodd, David Michael, et al
- 优先权： GB19920010463 19920515; GB19920014512 19920708
- 国际公布： WO1993023098 19931125
- 主分类号： A61M5
- IPC分类号： A61M5
摘要：
A syringe device for cartridged drugs has automatic needle retraction after cartridge contents expression. Drug cartridge (50, 125) is at least partially accommodated within a hollow piston actuator or carrier (30, 145, 245) and is released for further retraction under bias (22, 121) thereinto by way of a piston rod (40, 132, 232). Piston rod (40, 132, 232) serves to operate piston (52, 130) contained in the drug cartridge and has deflectable locking arms (42, 137, 237) that extend sideways into latching engagement with holding formation (38, 147, 247) of the piston actuator. Release of the arms by engagement with the open rear end of the cartridge (50, 125) permits retraction of needle and cartridge. Automatic needle insertion and cartridge contents discharge is also foreseen.