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Infiltration detection apparatus

  • US 4,647,281 A
  • Filed: 02/20/1985
  • Issued: 03/03/1987
  • Est. Priority Date: 02/20/1985
  • Status: Expired due to Term
First Claim
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1. A method for rapidly detecting the infiltration of a liquid from a source thereof through the vasuclar wall into the perivascular tissue, comprising the steps of, providing a non-invasive conformal microwave antenna, disposing said antenna on the skin at the area where liquid infusion into a blood vessel is to occur, establishing a reference, providing a microwave radiometer coupled from said microwave antenna, detecting the sub-cutaneous temperature at the site of the antenna with the use of said microwave radiometer, and rapidly signaling as alarm condition upon detecting a predetermined temperature differential between temperature sensed by said microwave radiometer and said reference.

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