Closed loop optimization of control parameters during cardiac pacing
First Claim
1. A medical device system for optimizing a pacing control parameter, comprising:
- a plurality of cardiac electrodes;
a cardiac signal generator coupled to the electrodes for delivering cardiac pacing pulses;
a sensing module coupled to the cardiac electrodes for acquiring an EGM signal; and
a processor configured to determine a value of an EGM-based index corresponding to an optimal electrical activation condition of a patient'"'"'s heart and adjust a pacing therapy control parameter to maintain the EGM-based index value corresponding to the optimal electrical activation condition during delivery of the cardiac pacing pulses.
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Accused Products
Abstract
A system and method control a pacing parameter in a closed-loop manner by determining a value of an EGM-based index corresponding an optimal electrical activation condition of a patient'"'"'s heart and adjusting a pacing therapy to maintain the EGM-based index value. The closed loop control method performed by the system may establish a relationship between an EGM-based index and multiple settings of a pacing control parameter. Values of the EGM-based index are stored with corresponding setting shifts relative to a previously established optimal setting. A processor of an implantable medical device monitors the EGM-based index during cardiac pacing. Responsive to detecting an EGM-based index value corresponding to a non-optimal setting of the control parameter, the processor determines an adjustment of the control parameter from the stored index values and corresponding setting shifts.
233 Citations
14 Claims
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1. A medical device system for optimizing a pacing control parameter, comprising:
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a plurality of cardiac electrodes; a cardiac signal generator coupled to the electrodes for delivering cardiac pacing pulses; a sensing module coupled to the cardiac electrodes for acquiring an EGM signal; and a processor configured to determine a value of an EGM-based index corresponding to an optimal electrical activation condition of a patient'"'"'s heart and adjust a pacing therapy control parameter to maintain the EGM-based index value corresponding to the optimal electrical activation condition during delivery of the cardiac pacing pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical device system for optimizing a pacing control parameter, comprising:
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a plurality of cardiac electrodes; a cardiac signal generator coupled to the electrodes for delivering cardiac pacing pulses; a sensing module coupled to the cardiac electrodes for acquiring an EGM signal; a processor configured to determine a value of an EGM-based index corresponding to an optimal electrical activation condition of a patient'"'"'s heart and adjust a pacing therapy control parameter to maintain the EGM-based index value corresponding to the optimal electrical activation condition during delivery of the cardiac pacing pulses; the cardiac signal generator is configured to deliver cardiac pacing according to each of a plurality of settings of a pacing control parameter, the plurality of settings comprising a previously established optimal setting and at least one non-optimal setting different than the optimal setting by a setting shift; the processor further configured to; establish a relationship between an EGM-based index and the plurality of settings by determining the EGM-based index from the EGM signal acquired during cardiac pacing at each of the plurality of settings and storing values of the determined index with corresponding setting shifts of each of the plurality of settings relative to the optimal setting; monitor the EGM-based index during cardiac pacing; and responsive to detecting an EGM-based index value corresponding to a non-optimal setting of the control parameter, determine an adjustment of the control parameter from the stored index values and corresponding setting shifts, and adjust the control parameter by the determined adjustment.
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14. A medical device system for optimizing a pacing control parameter, comprising:
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a plurality of cardiac electrodes; a cardiac signal generator coupled to the electrodes for delivering cardiac pacing pulses; a sensing module coupled to the cardiac electrodes for acquiring an EGM signal; and a processor configured to determine a value of an EGM-based index corresponding to an optimal electrical activation condition of a patient'"'"'s heart and adjust a pacing therapy control parameter to maintain the EGM-based index value corresponding to the optimal electrical activation condition during delivery of the cardiac pacing pulses, wherein determining the EGM-based index comprises determining a time interval between a maximum peak amplitude and a minimum peak amplitude of the EGM signal following a pacing pulse.
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Specification