PRESSURE CONTROL IN RESPIRATORY TREATMENT APPARATUS

• Main Authors: CUTCLIFFE, GRAHAM, STEPHEN, TANG, ZHUO, RAN, HUBY, RONALD, JAMES, CHENG, JACK, WEI, BLUNSDEN, CHRISTOPHER, KINGSLEY
• Format: Patent
• Language: English; French; German
• Published: 20.01.2016
• 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; MEDICAL OR VETERINARY SCIENCE

A pressure-limit control device to prevent an over-pressure condition of a respiratory treatment apparatus, the device comprising a first circuit configured to detect a signal representative of a measure of pressure exceeding a first threshold, the first threshold representative of a first pressure limit, and to detect the exceeding of the first threshold by a second threshold, the second threshold representing a first time limit; and a second circuit configured to detect the signal representative of a measure of pressure exceeding a third threshold, the third threshold representative of a second pressure limit, and to detect the exceeding of the third threshold by a fourth threshold, the fourth threshold representing a second time limit; wherein the first and second pressure limits are different pressure limits and the first and second time limits are different time limits, and wherein a detection by either one of the first circuit and second circuit indicates an over-pressure condition of the respiratory treatment apparatus.