Injectable infusion pump apparatus for implanting long-term dispensing module and medication in an animal and method therefor
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United States of America Patent
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May 30, 1989
Grant Date -
N/A
app pub date -
Apr 13, 1988
filing date -
Apr 13, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two-stage injection device has a resiliently expandable medication reservoir stored in collapsed state within the cannula. After inserting the cannula through the skin into an animal cavity, depression of a first stage element injects the reservoir out the cannula into the cavity. Depression of a second stage element fills the reservoir with fluid medication, elastically expanding the reservoir. The injection apparatus is withdrawn, leaving the reservoir implanted in the cavity, continuously infusing medication for a period up to hundreds of days through a restrictor orifice under the pressure of the elastically stretched walls of the reservoir.
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