Dose indicating injection pen
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United States of America Patent
Stats
-
Jul 13, 1993
Grant Date -
N/A
app pub date -
Apr 4, 1990
filing date -
Apr 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Two embodiments of a multi-dose syringe both include structure for indicating the selected amount of liquid to be injected. A first element and a second element coupled respectively to the syringe housing and the plunger rod are adapted for calibrated movement with respect to each other, one of the first and second elements includes an outer portion having dose-indicating scale thereon, and another of the first and second elements surrounding said outer portion includes a window through which only a segment of the dose-indicating scale on said portion is visible, the visible portion indicating the amount of liquid selected for injection.
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