System and method for detecting access disconnection
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United States of America Patent
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Jun 5, 2012
Grant Date -
Jan 28, 2010
app pub date -
Jul 25, 2008
filing date -
Jul 25, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A dialysis system includes: a blood filter; a dialysate pump connected to a dialysate portion of the blood filter; a blood pump connected to a blood portion of the blood filter, the blood pump including a diaphragm that is moved in cycles to pump the blood, the cycles having a flow period and a no-flow period; a patient access device in fluid communication with the blood portion of the blood filter, the no-flow period having a first characteristic of a property when the patient access device is lodged in a patient and a second characteristic of the property when the patient access device is dislodged from the patient; and a logic implementer configured to determine that the patient access device has been dislodged from the patient when the second characteristic of the parameter is detected.
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