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

A fluid cassette to receive fluid from an intravenous fluid line and facilitate heating of said fluid to a desired fluid temperature within an intravenous fluid warming device, said cassette comprising:

• fluid line tubing including an inlet tubing portion with an inlet terminal to receive fluid into said cassette and an outlet tubing portion with an outlet terminal to release fluid from said cassette, said inlet and outlet terminals being securable to portions of said intravenous fluid line;
• wherein said fluid line tubing further includes a plurality of tubing sections in fluid communication with said inlet and outlet tubing portions, each said tubing section defining a path for fluid flow in a particular direction, and wherein said fluid flow direction within each tubing section is opposite the fluid flow direction within a tubing section adjacent that section.

A fluid cassette to receive fluid from an intravenous fluid line and facilitate heating of said fluid to a desired fluid temperature within an intravenous fluid warming device, said cassette comprising:

• fluid flow means including an inlet portion with an inlet terminal to receive fluid into said cassette and an outlet portion with an outlet terminal to release fluid from said cassette, said inlet and outlet portions being securable to portions of said intravenous fluid line;
• wherein said fluid flow means further includes a plurality of concentric sections in fluid communication with said inlet and outlet portions, each said concentric section defines a path for fluid flow in a particular direction, and wherein said fluid flow direction within each concentric section is opposite the fluid flow direction within a concentric section adjacent that section.

A fluid cassette to receive fluid from an intravenous fluid line and facilitate heating of said fluid to a desired fluid temperature within an intravenous fluid warming device, said cassette comprising:

• a fluid conduit including an inlet portion with an inlet terminal to receive fluid into said cassette and an outlet portion with an outlet terminal to release fluid from said cassette, said inlet and outlet portions being securable to portions of said intravenous fluid line;
• wherein said fluid conduit further includes a plurality of concentric sections in fluid communication with said inlet and outlet portions, each said concentric section defines a path for fluid flow in a particular direction, and wherein said fluid flow direction within each concentric section is opposite the fluid flow direction within a concentric section adjacent that section.