Apparatus and process for controlling the ventilation of the lungs of a patient
First Claim
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1. Apparatus for controlling the ventilation of a patient by a ventilator, comprising:
- means for determining the movement of a patient'"'"'s diaphragm, said means including a sensor adapted for contacting to the external portion of the abdomen of the patient that produces a signal responsive to the movement of the diaphragm of the patient;
means for determining the rate of change of the sensor signal with time; and
means for controlling a ventilator based upon the rate of change of the sensor signal with time.
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Abstract
The breathing of a patient is monitored with a movement sensor, taped to the abdomen of the patient, that produces an output signal indicative of the movement of the diaphragm of the patient. The rate of change of the output signal with time is determined. When the rate of change with time exceeds a preselected value, a ventilation of the lungs of the patient by an external ventilator is initiated.
218 Citations
15 Claims
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1. Apparatus for controlling the ventilation of a patient by a ventilator, comprising:
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means for determining the movement of a patient'"'"'s diaphragm, said means including a sensor adapted for contacting to the external portion of the abdomen of the patient that produces a signal responsive to the movement of the diaphragm of the patient; means for determining the rate of change of the sensor signal with time; and means for controlling a ventilator based upon the rate of change of the sensor signal with time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Apparatus for controlling the ventilation of a patient, comprising:
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a sensor that produces a pressure output signal responsive to the movement of a surface to which it is affixed; a pressure transducer that receives the pressure output signal of the sensor and produces a transducer electrical output signal related thereto; and means for initiating a ventilation of the patient when the rate of change of transducer electrical output signal with time exceeds a preselected value. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A process for controlling the ventilation of a patient, comprising:
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fixing a sensor that produces a pressure output signal responsive to the movement of a surface to which it is affixed to the external surface of the abdomen of a patient; providing the pressure output signal of the sensor to a pressure transducer that receives the pressure output signal of the sensor and produces a transducer electrical output signal related thereto; and initiating a ventilation of the patient when the rate of change of transducer electrical output signal with time exceeds a preselected value. - View Dependent Claims (14, 15)
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Specification