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Apparatus for measuring aggregation rate of whole blood red blood cells

  • US 4,822,568 A
  • Filed: 06/16/1986
  • Issued: 04/18/1989
  • Est. Priority Date: 03/28/1986
  • Status: Expired due to Fees
First Claim
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1. An apparatus for measuring the aggregation rate of whole blood red blood cells, comprising:

  • a tube through which blood can flow;

    means for varying flow rate of the blood in said tube;

    means, at one side of said tube, for transmitting light through the tube and the blood therein;

    means for detecting light from said light transmitting means after the light has been transmitted through the blood in the tube, and for producing signals representative of changes in optical density of the light so detected at different flow rates of the blood;

    means for receiving said signals to determine said aggregation rate;

    said tube comprising a cubital vein in an extracorporeal circulatory system;

    said detecting means comprising a light detector of a densitometer; and

    said densitometer being connected to a voltage comparator switch of a warning device.

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