发明名称 |
PASSIVE REUSE PREVENTION SYRINGE THAT USES A RETAINING RING LOCK |
摘要 |
A syringe assembly includes a syringe barrel having an inside surface defining a chamber and an outlet. A plunger assembly is disposed within the syringe barrel and includes an elongate plunger rod having a distal end surface, a plunger head having a distal sealing surface and a proximal end surface having a continuous perimeter, and a breakable neck portion integrally connecting the plunger rod and the plunger head. A retaining ring lock is disposed on the inside surface of the barrel and defines an engagement surface about a perimeter of the chamber. The retaining ring lock is adapted to engage and retain the plunger head in a locked position within the chamber. The engagement surface of the retaining ring lock engages the continuous perimeter of the proximal end surface of the plunger head in a perimetrical engagement when the plunger head is in the locked position. |
申请公布号 |
CA2729004(A1) |
申请公布日期 |
2009.12.30 |
申请号 |
CA20092729004 |
申请日期 |
2009.06.26 |
申请人 |
BECTON, DICKINSON AND COMPANY |
发明人 |
WAYMAN, BRIAN H.;ODELL, ROBERT;CAIZZA, RICHARD JAMES |
分类号 |
A61M5/50 |
主分类号 |
A61M5/50 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|