Modification of evoked response detection algorithm based on orientation and activity of patient
First Claim
1. A method for modifying a detection algorithm implemented by an implantable stimulation device, comprising:
- receiving one or more signals indicative of a patient state;
processing the one or more signals to determine the patient state; and
modifying the detection algorithm based on the determined patient state;
wherein receiving one or more signals comprises receiving one or more position signals.
1 Assignment
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Accused Products
Abstract
Optimization of evoked response detection in an automatic capture detection system employed by an implantable cardiac stimulation device is presented. Patient state information is used to determine the appropriate settings of variables that are associated with the evoked response signal detection algorithm. The variables used by the evoked response signal detection algorithm are first established for the patient in a variety of positions. During operation of the implantable cardiac stimulation device, the patient state is monitored and the variables used by the evoked response signal detection algorithm are adjusted accordingly.
167 Citations
19 Claims
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1. A method for modifying a detection algorithm implemented by an implantable stimulation device, comprising:
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receiving one or more signals indicative of a patient state; processing the one or more signals to determine the patient state; and modifying the detection algorithm based on the determined patient state; wherein receiving one or more signals comprises receiving one or more position signals.
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2. A method for modifying a detection algorithm implemented by an implantable stimulation device, comprising:
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receiving one or more signals indicative of a patient state; processing the one or more signals to determine the patient state; and modifying the detection algorithm based on the determined patient state; wherein receiving one or more signals comprises receiving one or more position signals and one or more activity signals. - View Dependent Claims (3)
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4. A method for detecting an evoked response in a cardiac stimulation device implanted in a patient, the device having an evoked response detection algorithm, the method comprising:
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receiving one or more signals from a position sensor; processing the one or more signals to determine an orientation of the patient; and modifying the evoked response detection algorithm based on the detected orientation of the patient. - View Dependent Claims (5, 6, 7, 8)
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9. An implantable cardiac device comprising:
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a sensor that is operative to generate one or more signals indicative of a patient state; and a controller that is in communication with the sensor, the controller being programmed to apply a detection algorithm to received electrical activity signals, wherein the controller is operative to receive the one or more signals from the sensor, process the one or more signals to determine the patient state, and adjust one or more parameter values of the detection algorithm based on the determined patient state; wherein the sensor comprises a position sensor.
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10. An implantable cardiac device comprising:
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a sensor that is operative to generate one or more signals indicative of a patient state; and a controller that is in communication with the sensor, the controller being programmed to apply a detection algorithm to received electrical activity signals, wherein the controller is operative to receive the one or more signals from the sensor, process the one or more signals to determine the patient state, and adjust one or more parameter values of the detection algorithm based on the determined patient state; wherein the sensor comprises a position sensor, and further comprising an activity sensor that is operative to generate one or more signals Indicative of an activity level of the patient. - View Dependent Claims (11)
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12. An implantable cardiac device comprising:
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a memory configured to store plural sets of parameter values corresponding to various patient states; a sensor that is operative to generate one or more signals indicative of a patient state; and a controller that is operative to receive the one or more signals from the sensor, process the one or more signals to determine the patient state, and use the corresponding set of parameter values to process sensed electrical activity; wherein the controller is configured to modify an evoked response detection algorithm by; retrieving a position set comprising a plurality of parameter values pertaining to the orientation of the patient; and calibrating the evoked response detection algorithm using the position set of parameter values,. - View Dependent Claims (13, 14)
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15. An implantable cardiac device comprising:
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a memory configured to store plural sets of parameter values corresponding to various patient states; a sensor that is operative to generate one or more signals indicative of a patient state; and a controller that is operative to receive the one or more signals from the sensor, process the one or more signals to determine the patient state, and use the corresponding set of parameter values to process sensed electrical activity; wherein the controller is further configured to disable an automatic capture detection function to prevent false loss of capture detection when the signal indicates that an orientation of the patient is changing.
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16. An implantable cardiac device comprising:
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a computer readable medium encoded with an evoked response detection algorithm; a position sensor to generate one or more position signals indicative of an orientation of a patient; and a controller to receive the one or more position signals from the position sensor, to process the one or more position signals to determine the orientation of the patient, and to modify the evoked response detection algorithm computer based on the detected orientation of the patient. - View Dependent Claims (17, 18, 19)
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Specification