Controlling the operation of a respiratory gas monitor
First Claim
1. A method for controlling a respiratory gas monitor device, the respiratory gas monitor device including:
- at least one respiratory gas analyzer,a gas sampling line flow-connected to a breathing tube suitable for feeding of respiratory gas to and from a patient,a gas pump for sucking sample(s) of respiratory gas from said breathing tube through said gas sampling line,a power supply and a processing unit, anda pressure sensor pressure-connected to said gas sampling line and electrical-signal-connected to said processing unit,wherein the method comprises;
detecting by said processing unit a minimum value and a maximum value in the signal forwarded by said pressure sensor, wherein the minimum value in the signal represents a minimum pressure and wherein the maximum value in the signal represents a maximum pressure respectively inside said gas sampling line;
calculating a difference between said minimum value and said maximum value;
comparing said calculated difference with a predetermined threshold value programmed in or to said processing unit; and
(a) if said calculated difference is below said threshold value, switching said gas pump off or keeping said gas pump non-operating by said processing unit, and(b) if said calculated difference is over said threshold value, switching said gas pump on or keeping said gas pump operating by said processing unit.
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Accused Products
Abstract
A method for controlling a respiratory gas monitor device, which includes at least one respiratory gas analyzer, a gas sampling line, a gas pump for sucking sample(s) of respiratory gas from the gas sampling line. Also included are a power supply and a processing unit, and a pressure sensor connected to the gas sampling line and electrically connected to the processing unit. A minimum value and a maximum value in a signal from the patient are detected by the processing unit, and a difference between the minimum value and the maximum value is calculated. The value of this difference is compared with a predetermined threshold value. If the calculated difference is below the threshold value, the pump is switched off or kept non-operating by the processing unit. If the calculated difference is over the threshold value, the pump is switched on or kept operating by the processing unit.
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Citations
19 Claims
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1. A method for controlling a respiratory gas monitor device, the respiratory gas monitor device including:
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at least one respiratory gas analyzer, a gas sampling line flow-connected to a breathing tube suitable for feeding of respiratory gas to and from a patient, a gas pump for sucking sample(s) of respiratory gas from said breathing tube through said gas sampling line, a power supply and a processing unit, and a pressure sensor pressure-connected to said gas sampling line and electrical-signal-connected to said processing unit, wherein the method comprises; detecting by said processing unit a minimum value and a maximum value in the signal forwarded by said pressure sensor, wherein the minimum value in the signal represents a minimum pressure and wherein the maximum value in the signal represents a maximum pressure respectively inside said gas sampling line; calculating a difference between said minimum value and said maximum value; comparing said calculated difference with a predetermined threshold value programmed in or to said processing unit; and (a) if said calculated difference is below said threshold value, switching said gas pump off or keeping said gas pump non-operating by said processing unit, and (b) if said calculated difference is over said threshold value, switching said gas pump on or keeping said gas pump operating by said processing unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling a respiratory gas monitor device in a patient monitoring system, the respiratory gas monitor device including:
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at least one respiratory gas analyzer, a gas sampling line flow-connected to the patient, a gas pump for sucking sample(s) of respiratory gas from the patient through said gas sampling line to said respiratory gas analyzer, and a power supply and a processing unit; and at least one other patient monitor device capable to detect values of at least one physiological signal from said patient, said other patient monitor detection-connected to said patient and electrical-signal-connected to said processing unit; wherein the method comprises; detecting by said other patient monitor a minimum value and a maximum value of said one physiological signal; calculating a difference between said minimum value and said maximum value; comparing said calculated difference with a predetermined threshold value programmed in or to said processing unit; and (a) if said calculated difference is below said threshold value, switching said gas pump off or keeping said gas pump non-operating by said processing unit, and (b) if said calculated difference is over said threshold value, switching said gas pump on or keeping said gas pump operating by said processing unit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification