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US 2006/0222350 A1Published application
Intravenous fluid warming system
AssigneeEnginivity LLC
InventorDavid Cassidy
Life of this patent
Estimating the term…
Abstract
A fluid warming device includes axially or longitudinally slidable covers that retain a removable heat exchange body in a housing in heat exchange communication with a heater assembly while allowing flow through the heat exchange body to be observed. In another aspect, a fluid warming system increases or decreases power to a heater assembly to adjust the fluid temperature to ensure that the fluid is at an appropriate temperature when it reaches the patient.
Claims21
A fluid warming device comprising:
- a housing comprising a main body and a pair of covers, the covers axially slidable on the main body, and a heat exchange body receiving compartment in the main body;
- a heater assembly disposed within the main body;
- and
- a heat exchange body removably disposable in the compartment of the main body in contact with a heat conducting surface of the heater assembly, the heat exchange body containing a fluid flow line from a fluid input port to a fluid output port;
- wherein the covers are slidable axially on the main body to a closed position in which the covers press the heat exchanger into heat exchange communication with the heater assembly.
2 more elements
A fluid warming system to minimize heat loss through IV tubing to a patient, comprising:
- a) determining a temperature drop across a heat exchange body of an IV fluid warming device;
- b) determining a temperature drop of the IV tubing to the environment, the IV tubing extending from the IV fluid warming device to a patient;
- c) determining if the temperature drop along the IV tubing is greater than a determined temperature limit;
- d) determining if the total temperature drop along the IV tubing and across the heat exchange body is greater than a determined drop limit;
- e) if the determined values from step c) and step d) are greater than their respective limits, determining the actual fluid temperature as a fluid output temperature minus the drop limit;
- f) if either of the determined values from step c) and step d) are not greater than their respective limits, determining the actual fluid temperature as a fluid output temperature minus the heat exchanger temperature drop;
- and
- g) adjusting power to the heat exchanger to achieve the desired output temperature.
5 more elements
Dependencies are inferred from the claim text.