Patents by Inventor Mark Sahlin

Mark Sahlin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Blood processing systems and methods which optically monitor plasma opacity
    Patent number: 6183651
    Abstract: Blood processing systems and methods separate blood into constituents including a plasma constituent that includes a platelet volume. The systems and methods detect the optical density of the plasma constituent and generate a first output indicative of the optical density. A processing element integrates the first output relative to the volume of plasma constituent and generates an integrated output. The integrated output correlates to the platelet volume. A second processing element generates a third output based, at least in part, upon the integrated output, which comprises parameters for storing the platelet volume.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: February 6, 2001
    Assignee: Baxter International Inc.
    Inventors: Richard I Brown, John T Foley, Kyungyoon Min, Mark Sahlin
  • Interface detection and control systems and method
    Patent number: 5980757
    Abstract: A viewing area in a blood separation chamber is monitored for the presence of an interface region between plasma and cellular blood components. Sensed optical density values for the viewing area are compared to a calibrated threshold value to generate a time pulse output. A calibration element derives the calibrated threshold value based upon either (i) a comparison of a sensed reference optical density value in the viewing area to an expected optical density value for the reference material, or (ii) a sensed optical density value of plasma exiting the blood separation chamber, or both.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: November 9, 1999
    Assignee: Baxter International Inc.
    Inventors: Richard I Brown, John T Foley, Kyungoon Min, Mark Sahlin
  • Blood processing systems and methods which optically derive the volume of platelets contained in a plasma constituent
    Patent number: 5958250
    Abstract: Blood processing systems and methods separate blood into constituents including a plasma constituent that includes a platelet volume. The systems and methods detect the optical density of the plasma constituent and generate a first output indicative of the optical density. A processing element integrates the first output relative to the volume of plasma constituent and generates an integrated output. The integrated output correlates to the platelet volume. A second processing element generates a third output based, at least in part, upon the integrated output, which comprises parameters for storing the platelet volume.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: September 28, 1999
    Assignee: Baxter International Inc.
    Inventors: Richard I Brown, John T Foley, Kyungyoon Min, Mark Sahlin