Periodic Disordered Breathing Detection
First Claim
Patent Images
1. A system, comprising:
- an implantable housing;
detection circuitry provided in the housing and configured to detect a signal representative of patient respiration; and
a processor configured to detect periodicity of an envelope of the signal and determine presence of periodic disordered breathing based on the periodicity of the envelope by computing a parameter characterizing envelope cycle length for multiple envelope cycles occurring within a time window, the parameter comprising one or both of a standard deviation (KSD) of duration for n envelope cycles and the predetermined duration divided by a mean (KMEAN) indicative of average envelope cycle length, wherein n is a number.
0 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods are directed to evaluating breathing disorders, such as periodic disordered breathing. A signal representative of patient respiration is developed, typically patient-internally. An envelope of the signal is provided. Periodicity of the envelope is detected, and presence and severity of periodic disordered breathing is determined based on the periodicity of the envelope.
86 Citations
20 Claims
-
1. A system, comprising:
-
an implantable housing; detection circuitry provided in the housing and configured to detect a signal representative of patient respiration; and a processor configured to detect periodicity of an envelope of the signal and determine presence of periodic disordered breathing based on the periodicity of the envelope by computing a parameter characterizing envelope cycle length for multiple envelope cycles occurring within a time window, the parameter comprising one or both of a standard deviation (KSD) of duration for n envelope cycles and the predetermined duration divided by a mean (KMEAN) indicative of average envelope cycle length, wherein n is a number. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A system, comprising:
-
an implantable housing; a respiration sensor; detection circuitry provided in the housing and coupled to the respiration sensor, the detection circuitry configured to detect a signal representative of patient respiration; conditioning circuitry provided in the housing and coupled to the detection circuitry, the conditioning circuitry configured to (a) remove a trend or a DC component of the signal representative of patient respiration and rectifying the signal or (b) square and low pass filter the signal representative of patient respiration; and a processor communicatively coupled to the conditioning circuitry, the processor configured to detect periodicity of an envelope of the signal and determine presence of periodic disordered breathing based on the periodicity of the envelope. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A system, comprising:
-
means for developing a signal representative of patient respiration from within a patient; means for detecting periodicity of an envelope of the signal; and means for determining presence of periodic disordered breathing based on the periodicity of the envelope by computing a parameter characterizing envelope cycle length for multiple envelope cycles occurring within a time window, the parameter comprising one or both of a standard deviation (KSD) of duration for n envelope cycles and the predetermined duration divided by a mean (KMEAN) indicative of average envelope cycle length, wherein n is a number.
-
Specification