Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2011-05-17
2011-05-17
Bugg, George A (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C604S048000, C604S131000, C604S151000, C073S001160, C204S275100, C324S500000
Reexamination Certificate
active
07944366
ABSTRACT:
Systems and methods of detecting occlusions and fluid-loss conditions (e.g., disconnects and/or leakages) in an infusion pump are discussed. For example, electrokinetic infusion pumps may develop an occlusion in the fluid flow path, which can disrupt control of fluid dispersed from the pump. As well, an infusion set disconnect can also result in a fluid-loss that can be disruptive. Such disruptions can be troublesome to systems that control the infusion pump, such as closed loop controllers. Accordingly, systems and methods described herein can be used to detect such occlusions and fluid-loss conditions during infusion pump operation. For example, a position sensor can be used to monitor fluid flow from the infusion pump, with the measurement being compared with an expected value to detect an occlusion or fluid-loss condition. Other algorithms for utilizing the position sensor are also described.
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Anex Deon
Bohm Sebastian
Krulevitch Peter
Zhao Mingqi
Bugg George A
Lifescan Inc.
Wang Jack
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