Patient controlled analgesic injector assembly and method of ass

Details Patient controlled analgesic injector assembly and method of ass Patient controlled analgesic injector assembly and method of ass

1994-01-10

1995-11-14

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

A61M 3700

Patent

active

054662273

ABSTRACT:
An injector assembly and method are provided for assembling the injector assembly to a patient controlled analgesic infuser unit. The injector assembly is provided in one-piece and includes an injector element having first and second portions with a cannula extending therebetween. The first portion is configured for connection to a stopper of a vial containing an analgesic where the connection enables the analgesic to flow out of the vial and through the cannula to the second portion of the injector element upon advancement of the stopper and the connected injector element within the vial by the infuser unit. A drug administration set is permanently connected to the second portion of the injector element for receiving the analgesic from the cannula. After the vial is emptied, the empty vial can be removed from the injector element and a full vial readily can be connected to the injector element without having to provide an additional injector element and disconnect and re-connect the drug administration set from the injector element. This type of injector assembly reduces changeover time, the risk of contamination and needle sticks and the amount of non-recyclable waste and storage space required as a result of eliminating replacement of the injector element each time a vial is replaced.

REFERENCES:
patent: 4578064 (1986-03-01), Sarnoff et al.
patent: 4828551 (1989-05-01), Gertler et al.
patent: 4850978 (1989-07-01), Dudar et al.
patent: 4936829 (1990-06-01), Zdeb et al.
patent: 5049129 (1991-09-01), Zdeb et al.

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