Patent ID: 8746248
Filing Date: 2014-06-10
Classification: A61M

Abstract:
1. A method of detecting disconnection of a ventilation system during delivery of gas from a medical ventilator to a patient, the ventilation system comprising a processor and a memory, the method comprising: developing, by the ventilation system, an actual leakage equation describing leakage from the ventilation system as a function of pressure in the ventilation system, wherein developing the actual leakage equation comprises: developing a maximum leakage equation describing a maximum allowed leakage from the ventilation system as a function of pressure in the ventilation system; monitoring pressure in the ventilation system during delivery of gas to the patient during a breath; calculating an actual breath leakage from the ventilation system during the breath based on a current pressure using the actual leakage equation; calculating a maximum allowed leakage from the ventilation system during the breath based on the current pressure using the maximum leakage equation; and comparing the calculated maximum allowed leakage and the actual breath leakage.