Spring driven infusion pump
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United States of America Patent
Stats
-
Sep 20, 1988
Issued Date -
N/A
app pub date -
Sep 23, 1987
filing date -
Feb 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An implantable infusion pump (20) for infusing drugs or other chemicals or solutions into the body. A flexible spring diaphragm (25) forms an outer back wall portion (26) of a housing (22) of the infusion pump (20). The spring diaphragm (25) applies substantially constant force over a range of displacement and communicating internal body pressure to the drug chamber (30) so as to maintain a substantially uniform pressure difference between the drug chamber (30) and the internal body pressure.
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