Radiant barrier for heated air circuits
AssigneeCareFusion 207, Inc.
InventorSteve LABOLLITA
Life of this patent
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Abstract
A heated breathing circuit with radiant barrier is provided. The breathing circuit includes an airflow conduit configured to receive gas at an input end and configured to deliver the gas to a patient at an output end, a heating element disposed inside the airflow conduit configured to heat the gas inside the airflow conduit between the input end and the output end and a heat shield disposed between the heating element and an outside surface of the airflow conduit such that the heat shield prevents heat energy loss from within the airflow conduit.
Claims21
1-31. (canceled)
A breathing circuit, comprising:
- an airflow conduit configured to receive gas at an input end and configured to deliver the gas to a patient at an output end;
- and
- an infrared emitting heating element disposed in the airflow conduit and having a radiant barrier formed on the infrared emitting heating element,
- wherein said radiant barrier is configured to shield radiant heat energy from the infrared emitting heating element at the infrared emitting heating element such that the radiant barrier prevents absorption of infrared radiation from the heating element by the airflow conduit.
A breathing circuit, comprising:
- an airflow conduit configured to receive gas at an input end and configured to deliver the gas to a patient at an output end;
- and
- a heating wire disposed in the airflow conduit and configured to heat the gas to maintain a predetermined temperature inside the airflow conduit to prevent condensation of the gas between the input end and the output end,
- wherein the heating wire is made from a low emissivity material and does not radiate infrared energy from the heating wire.
A method for forming a breathing circuit, the method comprising:
- providing an airflow conduit configured to receive gas at an input end and configured to deliver the gas to a patient at an output end;
- and
- providing, in said airflow conduit, an infrared emitting heating element having a radiant barrier formed on the infrared emitting heating element,
- wherein said radiant barrier is configured to shield radiant heat energy from the infrared emitting heating element at the infrared emitting heating element such that the radiant barrier prevents absorption of infrared radiation from the heating element by the airflow conduit.
Dependencies are inferred from the claim text.