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Microwave apparatus for warming low flow rate infusates

  • US 5,690,614 A
  • Filed: 09/06/1995
  • Issued: 11/25/1997
  • Est. Priority Date: 09/06/1995
  • Status: Expired due to Term
First Claim
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1. Infusate warming apparatus comprisinga housing defining an elongated microwave heating cavity having electrically conductive walls;

  • a printed circuit board separating said cavity lengthwise into first and second cavity sections, said printed circuit board including a fluid impervious, electrically insulating substrate and an elongated conductor run having opposite ends, said conductor run extending along said substrate and facing one of said cavity sections;

    a fluid inlet into, and a fluid outlet from, said first cavity section so that infusate can flow through said first cavity section andconnector means extending into said housing for coupling an external microwave signal of a selected frequency to, and a temperature sensing signal from, one end of said conductor run.

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