Two compartment mixing syringe
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United States of America Patent
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-
Sep 15, 1987
Grant Date -
N/A
app pub date -
Aug 11, 1986
filing date -
Aug 11, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mixing syringe having an inner cylindrical barrel open at one end, and closed at its other end by a thin, tough, membrane bonded thereto. The barrel may contain a first liquid. A plunger inserted in the barrel has a sliding, sealing head which applies pressure to the liquid to rupture the membrane when the plunger is advanced. The barrel is slidably inserted in an open end of an outer barrel in sealing relationship therewith, and has a tip on the other end of the outer barrel. The outer barrel contains a liquid or other material to mix with the first liquid when the membrane is ruptured. The mixture is discharged from the outer barrel via the tip when the inner barrel is advanced axially in the outer barrel.
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