Fluid delivery system and flow control therefor
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United States of America Patent
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Jul 24, 2012
Grant Date -
Oct 2, 2008
app pub date -
Mar 21, 2008
filing date -
Jun 21, 2002
priority date (Note) -
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Abstract
A fluid delivery system having a closed-loop control process for delivering a medical fluid to a patient. A fluid infusion system includes a pump for delivering a fluid to a patient via an administration tube. A flow sensor associated with the administration tube provides an indication of the actual flow rate of fluid in the administration tube. Such a flow sensor may comprise a positive displacement flow sensor constructed using micro-fabrication and/or micro-molding techniques. A reader reads the actual flow rate signal and provides an indication to a controller for controlling the pump. The flow rate information can also be used for providing status information, such as the existence of a blockage in the fluid delivery system.
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