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Acoustic access disconnection systems and methods

  • US 9,138,528 B2
  • Filed: 12/04/2013
  • Issued: 09/22/2015
  • Est. Priority Date: 02/09/2007
  • Status: Expired due to Fees
First Claim
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1. An access disconnection system comprising:

  • a blood treatment machine including an enclosure;

    an access site detection housing separate from the blood treatment machine enclosure;

    a transmitter positioned in the access site detection housing and configured to transmit an ultrasound wave into the blood stream of a patient;

    a receiver positioned in the access site detection housing and configured to receive a reflection of the ultrasound wave within the blood stream of the patient; and

    electronic circuitry in communication with the transmitter and the receiver, the electronic circuitry supported by the access site detection housing, the transmitter configured to send a disconnection output to the blood treatment machine, the disconnection output indicative of a change in the reflected ultrasound wave received by the receiver sufficient to expect that an access disconnection of one of an arterial line or a venous line has occurred.

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