Means for using single force sensor to supply all necessary information for determination of status of medical pump
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United States of America Patent
Stats
-
Apr 22, 2008
Grant Date -
Dec 9, 2004
app pub date -
Jul 22, 2003
filing date -
Oct 16, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A medical pump, for use with a cassette having a pumping chamber, includes a pumping element with a piston slider assembly which intermittently pressurizes the pumping chamber during a pumping cycle and has a piston head connected to a main body with a single pressure sensor positioned therebetween. A camshaft is associated with the pumping element, an inlet control element, and an outlet control element for closing the pumping chamber to flow when the pumping chamber is pressurized. A processing unit receives pressure and position data from the pressure sensor and a position sensor associated with the pumping element, and processes this data to determine the operating condition of the pump. The operating conditions determined include: blocked fluid flow, no fluid in the line, no cassette associated with the pump, proper pump priming, or proper valve sealing.
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Family
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