Multiple chamber automatic injector
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United States of America Patent
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-
Aug 20, 1991
Grant Date -
N/A
app pub date -
Aug 21, 1989
filing date -
Aug 23, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic injector is provided having at least two chambers containing different ingredients of a medicament separated by an impermeable membrane. A lance is movable independently of a plunger to cut or pierce the membrane before a spring-loaded drive member for the plunger is released to drive a needle out of the body of the injector and discharge the medicament through the needle. A removable safety clip is provided for preventing movement of an actuating cap into an operative position for advancing the lance, and release of the drive member is preventable by a removable safety pin until the injector is to be used.
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