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Instrument for measuring the hematocrit value of blood

  • US 4,547,735 A
  • Filed: 01/24/1983
  • Issued: 10/15/1985
  • Est. Priority Date: 01/23/1982
  • Status: Expired due to Fees
First Claim
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1. An apparatus for measuring the hematocrit value of a blood sample comprising:

  • an upper electrode having a sample contact surface;

    a lower electrode having a sample contact surface which is substantially the same size and shape as said upper electrode contact surface;

    means for selectively moving the electrodes between a blood sample measurement position and a second position where said electrodes are displaced away from each other to facilitate cleaning of the electrode faces and introduction of blood samples onto the electrode faces and wherein said electrode faces in said sample measurement position are substantially parallel with said upper electrode face being located directly above said lower electrode face at a spaced distance from said lower electrode face such that a blood sample defining a cylindrical column having a vertical axis may be formed between said upper and lower electrode faces, said electrode faces being oriented such that sedimentation of said blood sample occurs along the vertical axis of said blood sample column; and

    conductometry means connected to said electrodes for measuring the hematocrit value of the blood sample.

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