WIRE HEATED TUBE WITH TEMPERATURE CONTROL SYSTEM FOR HUMIDIFIER FOR RESPIRATORY APPARATUS

• Main Authors: VOS, Adrian Ashley, HUBY, Ronald James, TANG, Zhuo Ran
• Format: Patent
• Language: English; French; German
• Published: 15.11.2017
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MEDICAL OR VETERINARY SCIENCE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The present invention relates to a control system for a heated conduit for use in a respiratory apparatus. The control system comprises a power supply to provide power to the heated conduit. Additionally, it comprises a heating control circuit configured to control heating to obtain a predetermined temperature and a sensing circuit configured to indicate the temperature of a sensor positioned in the heated conduit as well as a bias generator circuit configured to provide a current to the sensor from a current source such that a voltage drop through the sensor may be recorded by the sensing circuit so that the temperature of the heated conduit is continuously monitored independent of whether the heating control circuit is on or off.