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On demand and post-treatment delivery of saline to a dialysis patient

  • US 7,713,226 B2
  • Filed: 05/31/2006
  • Issued: 05/11/2010
  • Est. Priority Date: 01/06/2006
  • Status: Expired due to Fees
First Claim
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1. An apparatus comprising:

  • a dialyzer;

    a blood inlet conduit configured to convey blood from a patient to the dialyzer;

    a saline reservoir;

    a saline conduit connecting the saline reservoir to the blood inlet conduit;

    a saline flow regulator configured to control fluid flow through the saline conduit; and

    a controller configured to administer successive doses of saline to a patient connected to the blood inlet conduit by successively opening and closing the saline flow regulator to permit a dose volume of saline to flow into the blood inlet conduit;

    wherein the controller is further configured to operate the saline flow regulator in a blood rinse-back mode, and to retain a minimum volume of saline to perform blood rinse-back before the patient is disconnected by preventing a user from dispensing saline that would decrease the remaining volume below a reserve volume.

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