发明名称 |
FLOW RATE COMPENSATION FOR TRANSIENT THERMAL RESPONSE OF HOT-WIRE ANEMOMETERS |
摘要 |
Systems and methods are described for application of a transitory corrective modification to a hot-wire anemometer flow voltage and/or calculated flow rate to compensate for transient thermal response of the anemometer during a change in mixture of a mixed gas being measured. According to one embodiment a method of applying the transitory corrective modification is provided. An output signal of an exhalation flow sensor of a medical ventilator is received. The flow sensor includes a hot-wire anemometer. The output signal is indicative of a rate of flow of expired gas by a patient. Transient thermal response of the hot-wire anemometer is compensated for by applying a corrective modification to the output signal or a value based thereon. The corrective modification is based at least in part on a fraction of inspired oxygen (FiO2) being supplied by the medical ventilator to the patient.
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申请公布号 |
US2010218765(A1) |
申请公布日期 |
2010.09.02 |
申请号 |
US20090394899 |
申请日期 |
2009.02.27 |
申请人 |
NELLCOR PURITAN BENNETT LLC |
发明人 |
JAFARI MEHDI M.;JIMENEZ RHOMERE S.;MCCOY EDWARD R.;AVIANO JEFFREY K. |
分类号 |
A61M16/00;A62B9/00;G01F1/69 |
主分类号 |
A61M16/00 |
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