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Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion

  • US 9,492,624 B2
  • Filed: 11/04/2011
  • Issued: 11/15/2016
  • Est. Priority Date: 12/17/2001
  • Status: Expired due to Fees
First Claim
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1. A fluid cassette to receive fluid from a fluid line and facilitate heating of said fluid to a desired fluid temperature within an intravenous fluid warming device having a base plate and a lid, said fluid cassette comprising:

  • an elongated portion of flexible tubing constructed from an intravenous fluid line and including an inlet tubing portion with an inlet terminal to receive fluid into said fluid cassette from said fluid line and an outlet tubing portion with an outlet terminal to release fluid from said fluid cassette to said fluid line; and

    a conductive contact encircling a substantially central portion of said flexible tubing and completing an electrical connection between the lid and the base plate when the lid is in a closed position to indicate a presence of said fluid cassette within the intravenous fluid warming device and control device operation;

    wherein said elongated portion of flexible tubing is manipulated to form and maintain a spiral portion including a plurality of nested tubing sections in fluid communication with said inlet and outlet tubing portions and arranged adjacent each other, each said tubing section defining a path for said fluid from said fluid line to flow in a particular direction, and wherein said fluid flow direction within each tubing section is opposite the fluid flow direction within each tubing section adjacent that section.

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