Wireless closed-loop and system to detect and treat sleep apnea
First Claim
1. A method for treating sleep apnea using an implantable device, the method comprising:
- sensing an inspiration (IN) signal representative of inspiration experienced by a patient from a respiratory surrogate signal;
sensing a respiratory effort (RE) signal representative of an amount of effort exerted by the patient during respiration;
analyzing the inspiration signal relative to an IN baseline, that corresponds to normal respiratory behavior;
analyzing the RE signal relative to an RE baseline, that corresponds to a normal amount of respiratory effort exerted by the patient;
declaring a central sleep apnea (CSA) state when the inspiration signal is less than the IN baseline and the RE signal is less than the RE baseline or an obstructive sleep apnea (OSA) state when the when the inspiration signal is less than the IN baseline and the RE signal is greater than the RE baseline; and
delivering at least one of a CSA therapy when the CSA state is declared or an OSA therapy when the OSA state is declared.
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Abstract
A wireless implantable system is provided that is externally powered and comprises of a closed-loop feedback for treating both patients with obstructive and central sleep apnea. A method is provided for treating sleep apnea using an implantable device. The method comprises sensing an inspiration (IN) signal representative of inspiration experienced by a patient from a respiratory surrogate signal and sensing a respiratory effort (RE) signal representative of an amount of effort exerted by the patient during respiration. The method also comprises analyzing the inspiration signal relative to an IN baseline, that corresponds to normal respiratory behavior, to identify an IN indicator, analyzing the RE signal relative to an RE baseline, that corresponds to a normal amount of respiratory exerted by the patient, to identify an RE indicator, declaring a central sleep apnea (CSA) state or an obstructive sleep apnea (OSA) state based on the IN and RE indicators, and delivering at least one of a CSA therapy when the CSA state is declared or an OSA therapy when the OSA state is declared.
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Citations
24 Claims
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1. A method for treating sleep apnea using an implantable device, the method comprising:
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sensing an inspiration (IN) signal representative of inspiration experienced by a patient from a respiratory surrogate signal; sensing a respiratory effort (RE) signal representative of an amount of effort exerted by the patient during respiration; analyzing the inspiration signal relative to an IN baseline, that corresponds to normal respiratory behavior; analyzing the RE signal relative to an RE baseline, that corresponds to a normal amount of respiratory effort exerted by the patient; declaring a central sleep apnea (CSA) state when the inspiration signal is less than the IN baseline and the RE signal is less than the RE baseline or an obstructive sleep apnea (OSA) state when the when the inspiration signal is less than the IN baseline and the RE signal is greater than the RE baseline; and delivering at least one of a CSA therapy when the CSA state is declared or an OSA therapy when the OSA state is declared. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for treating sleep apnea, comprising:
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sensors configured to sense inspiration and output an inspiration (IN) signal, representative of inspiration experienced by a patient, as a respiratory surrogate signal, the sensors further configured to sense a respiratory effort (RE) and output an RE signal representative of an amount of effort exerted by the patient during respiration; an analysis circuit module configured to analyze the IN signals relative to an IN baseline, that corresponds to normal respiratory behavior; the analysis circuit module configured to analyze the RE signal relative to an RE baseline, that corresponds to a normal amount of respiratory effort exerted by the patient; a therapy circuit module configured to declare a central sleep apnea (CSA) state when the inspiration signal is less than the IN baseline and the RE signal is less than the RE baseline or an obstructive sleep apnea (OSA) state when the inspiration signal is less than the IN baseline and the RE signal is greater than the RE baseline; and an implantable device configured to deliver at least one of a CSA therapy when the CSA state is declared or an OSA therapy when the OSA state is declared. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification