Infusion device and overfill protection mechanism for use with same
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United States of America Patent
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Jan 11, 2011
Issued Date -
N/A
app pub date -
Apr 27, 2006
filing date -
Apr 27, 2006
priority date (Note) -
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Abstract
A medical device and displacement-based over-pressurization mechanism (OPM) for use with the same. The OPM may be positioned in or along a refill passageway of the device. It may include a valve plunger having a portion in biased, abutting contact with a reservoir surface that moves as the reservoir volume changes. The reservoir surface may move between a full position and a refill position. The OPM is preferably configured to close and occlude the refill passageway when the reservoir and reservoir surface reach the full position, e.g., before reaching an overfill position. A sensor may also be provided to detect a position of the valve plunger.
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