公开(公告)号：US20180056006A1

公开(公告)日：2018-03-01

申请号：US15556917

申请日：2016-03-17

Applicant: Becton, Dickinson and Company

Inventor： Charles D. Shermer ,  Qihua Xu ,  Christopher DeMaria

IPC: A61M5/315 ,  A61M5/31

CPC classification number: A61M5/31513 ,  A61M5/3129 ,  A61M5/31565 ,  A61M2005/31521 ,  A61M2205/0216 ,  A61M2205/0222 ,  A61M2207/00

Abstract: A time-of-use activated syringe assembly includes a syringe barrel defining a chamber, a plunger rod having a forward attachment end located within the chamber of the barrel, and a stopper located within the chamber of the barrel and including a rearward end adapted to receive the plunger rod. The stopper includes a first perimetrical skirt extending around an outer circumference thereof and extending toward a front end of the stopper. An activation mechanism is associated with at least one of the stopper and the plunger rod, and the plunger rod is configured for transition between a pre-loaded position in which the activation mechanism is unactivated and a loaded position in which the activation mechanism is activated. Upon activation, the activation mechanism applies a radial force to the first perimetrical skirt causing the skirt to seal against an inner wall of the syringe barrel.