Syringe
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United States of America Patent
Stats
-
Aug 29, 1989
Issued Date -
N/A
app pub date -
Feb 25, 1987
filing date -
Jul 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A syringe provides for the isolated storage of two components of a medicament until immediately prior to use of the syringe. One liquid component is stored in a collapsible chamber of a sealed capsule within a hollow plunger stem of the syringe, and the other component beneath the head of the plunger. A double headed needle arrangement between the head and stem of the plunger is caused to penetrate the plunger head and the capsule when the syringe is to be used so that the plunger may be drawn back to exhaust the contents of the capsule chamber into admixture with the component stored beneath the head of the plunger. Communication through the double headed needle arrangement is then interrupted before the plunger is used to eject the syringe contents through an external needle fitted to the syringe.
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