SYSTEM FOR ADMINISTRATION OF A LIQUID AGENT TO A PATIENT WITH A SYRINGE PUMP

摘要

A system is provided for accommodating the use of a syringe pump to inject a liquid agent into a patient from a vial having an internal chamber occluded at one end by a stopper located in the chamber to sealingly engage the vial and slide within the chamber. The system includes a plunger having a bearing end to be engaged by a movable pushing member of the syringe pump and having a drive end adapted to engage the stopper. A hollow piercing needle is mounted to the plunger to be connected in fluid communication with the patient and has a piercing end to penetrate the stopper. The needle moves with the plunger and stopper relative to the chamber as the liquid is discharged from the vial.