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Apparatus and method for the detection of IV catheter obstruction and extravasation

  • US 5,026,348 A
  • Filed: 06/06/1988
  • Issued: 06/25/1991
  • Est. Priority Date: 06/06/1988
  • Status: Expired due to Fees
First Claim
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1. An in-line fluid conduit condition analyzer comprisinga chamber adapted for insertion in the flow path of a fluid conduit;

  • means for varying the volume of the chamber in response to a predetermined drive signal;

    means for sensing a variation in volume or pressure in said chamber in response to the variation in volume produced by said drive signal, said sensing means including a capacitive sensor having first and second capacitor plates, one of which is a part of said varying means; and

    means for independently detecting each of a set of abnormalities in the flow path in response to the sensed variation.

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