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Probe for optical sensor

  • US 5,058,587 A
  • Filed: 08/22/1989
  • Issued: 10/22/1991
  • Est. Priority Date: 08/23/1988
  • Status: Expired due to Term
First Claim
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1. An optical sensor probe for emitting light into blood and for transmitting reflected light thereby obtained to an optical sensor, said optical sensor probe comprising:

  • a conduit through which blood flows;

    a first optical fiber having its one end adapted to be in contact with blood and connected to a side wall of said conduit so as to be flush with the inner surface of the side wall in said conduit, said first optical fiber having means for being supplied at its other end with light and emitting the light into the blood from said one end;

    a second optical fiber having its one end disposed so as to be flush with the inner surface of the side wall of said conduit at a predetermined distance from said one end of said first optical fiber in the direction in which the blood flows through said conduit, said second optical fiber receiving at its said one end reflected part of the light emitted into the blood by said first optical fiber, and transmitting the received reflected light to said optical sensor;

    a cable accommodating said first and second optical fibers; and

    connection means for connecting said cable to a side surface of said conduit.

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