SYSTEM AND METHODS FOR VENTILATING A PATIENT
First Claim
1. A method of ventilating a patient, the method comprising:
- placing a ventilator in a mode capable of delivering respiratory gas based on at least one fixed parameter and at least one variable parameter, the fixed parameters being tidal volume and peak airway pressure and the variable parameter being positive end expiratory pressure (PEEP);
identifying a first level for the PEEP;
configuring the ventilator to deliver the respiratory gas at the peak airway pressure and the PEEP to achieve the tidal volume;
monitoring respiratory as flow over time to measure tidal volume;
setting a second level for the PEEP based on the measured tidal volume;
automatically adjusting the PEEP to the second level, relative to the peak airway pressure; and
repeating the steps of configuring, monitoring, setting and automatically adjusting to achieve the ventilation.
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Accused Products
Abstract
System and methods for ventilating a patient are provided. In one embodiment, the method comprises steps of placing a ventilator in a mode capable of delivering respiratory gas based on at least one fixed parameter and at least one variable parameter, the fixed parameters being tidal volume and peak airway pressure and the variable parameter being PEEP, identifying a first level for the PEEP, configuring the ventilator to deliver the respiratory gas at the peak airway pressure and the PEEP to achieve the tidal volume, monitoring respiratory gas flow over time to measure tidal volume, setting a second level for the PEEP based on the measured tidal volume, automatically adjusting the PEEP to the second level relative to the peak airway pressure and repeating the steps of configuring, monitoring, setting and automatically adjusting to achieve the ventilation.
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Citations
20 Claims
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1. A method of ventilating a patient, the method comprising:
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placing a ventilator in a mode capable of delivering respiratory gas based on at least one fixed parameter and at least one variable parameter, the fixed parameters being tidal volume and peak airway pressure and the variable parameter being positive end expiratory pressure (PEEP); identifying a first level for the PEEP; configuring the ventilator to deliver the respiratory gas at the peak airway pressure and the PEEP to achieve the tidal volume; monitoring respiratory as flow over time to measure tidal volume; setting a second level for the PEEP based on the measured tidal volume; automatically adjusting the PEEP to the second level, relative to the peak airway pressure; and repeating the steps of configuring, monitoring, setting and automatically adjusting to achieve the ventilation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of ventilating a lung in a patient, the method comprising the steps of:
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determining a first peak airway pressure; selecting a first level for the PEEP; providing respiratory gas to the patient at the first peak airway pressure and the PEEP to deliver a first volume of the respiratory gas; varying the peak airway pressure to a second value; monitoring respiratory gas flow over time to measure tidal volume; determining a second level for the PEEP based on the measured tidal volume; automatically adjusting the PEEP relative to the peak airway pressure; and providing the respiratory gas to the patient at the second peak airway pressure and the PEEP to deliver a second volume of the respiratory gas; wherein each of the volumes of the respiratory gas being delivered is based upon a corresponding predetermined PEEP. - View Dependent Claims (8, 9, 10)
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11. A ventilator for respiratory treatment of a patient, the ventilator comprising:
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a gas delivery unit for delivering respiratory gas to the patient based on at least one fixed parameter and at least one variable parameter, the fixed parameters being tidal volume and peak airway pressure and the variable parameter being PEEP; and a regulation unit coupled to the gas delivery unit for controlling the gas delivery unit to deliver the respiratory gas at a pressure level corresponding to the peak airway pressure, the regulation unit further configured for controlling the gas delivery unit for adjusting the PEEP for each breath to maintain the tidal volume equal to a predetermined value. - View Dependent Claims (12, 13, 14)
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15. A computer readable media comprising computer readable program instructions for ventilating a patient, the computer readable program instructions comprising:
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a routine for placing a ventilator in a mode capable of delivering respiratory gas based on at least one fixed parameter and at least one variable parameter;
the fixed parameters being tidal volume and peak airway pressure and the variable parameter being PEEP;a routine for identifying a first level for the PEEP; a routine for configuring the ventilator to deliver the respiratory gas at the peak airway pressure and the PEEP to achieve the tidal volume; a routine for monitoring respiratory gas flow over time to measure tidal volume; a routine for setting a second level for the PEEP based on the measured tidal volume; a routine for automatically adjusting the PEEP to the second level, relative to the peak airway pressure; and a routine for repeating the steps of configuring, monitoring, setting and automatically adjusting to achieve the ventilation. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification