System and Method for Detection of Disconnection in an Extracorporeal Blood Circuit

  • US 20100234786A1
  • Filed: 02/12/2010
  • Published: 09/16/2010
  • Est. Priority Date: 02/12/2009
  • Status: Active Grant
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First Claim
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1. A dialysis system having a disconnection monitor for determining if a blood line connection to a patient has been disconnected, comprising:

  • a. A blood circuit in fluid communication with a patient and a dialysis circuit;

    b. A pressure transducer in pressure communication with said blood circuit wherein said pressure transducer generates a signal indicative of a pulse signal in said blood circuit;

    c. A cardiac reference signal generator, wherein said cardiac reference signal generator detects and generates a signal indicative of said patient'"'"'s pulse;

    d. The disconnection monitor comprising;

    i. A pressure transducer data receiver, wherein said pressure transducer data receiver receives said signal indicative of the pulse signal in said blood circuit;

    ii. A cardiac reference signal receiver, wherein said cardiac reference signal receiver receives said signal indicative of the patient'"'"'s pulse; and

    iii. A processor, wherein said processor cross-correlates said signal indicative of the pulse signal in said blood circuit and said signal indicative of the patient'"'"'s pulse to generate data indicative of a disconnection of the blood line connection to the patient.

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