Breathing gas delivery method and apparatus
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Abstract
An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient, and improved methods and apparatus for triggering and for leak management in such systems.
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Citations
30 Claims
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1-10. -10. (canceled)
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11. A method of medical treatment for a patient comprising the steps of:
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providing a flow of breathing gas from a source for delivery to an airway of such a patient at pressure magnitudes that vary with such a patient'"'"'s respiratory cycle;
monitoring a parameter indicative of a flow of the breathing gas flowing between the source and the airway of such a patient;
processing the parameter indicative of the flow to provide a reference indicia; and
utilizing the parameter, the reference indicia, or both the parameter and the reference indicia to apply a variable pressure in the airway of such a patient such that an average of the pressure applied in the airway of such a patient during inspiration is higher than an average of the pressure applied in the airway of such a patient during expiration. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of medical treatment for a patient comprising the steps of:
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providing a flow of breathing gas from a source for delivery to an airway of such a patient at pressure magnitudes that vary with such a patient'"'"'s respiratory cycle;
providing a signal indicative of a characteristic of a flow of the breathing gas flowing between the source and the airway of such a patient;
determining a reference indicia based on the signal; and
applying a variable pressure in the airway of such a patient, based on the signal, the reference indicia, or both the signal and the reference indicia, such that an average of the pressure applied in the airway of such a patient during inspiration is higher than an average of the pressure applied in the airway of such a patient during expiration. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification