Injection device and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 28, 1982
Issued Date -
N/A
app pub date -
Mar 23, 1981
filing date -
Apr 16, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus for injecting fluids into patients at a controlled rate from an ampule with a tubular side wall closed at one end with a penetrable plug and a sliding piston in the side wall to force the fluid through an opening in the penetrable member using either a long duration injector with an expelling means to move the ampule piston, drive means for operating the expelling means, and control means for incrementally and successively connecting and disconnecting the drive means to the expelling means or a short duration injector with a spring drive or a fluid pressure drive to move the ampule piston and meter the fluid through a metering device.
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