METHOD TO ASSESS HEMODYNAMIC PERFORMANCE DURING CARDIAC RESYNCHRONIZATION THERAPY OPTIMIZATION USING ADMITTANCE WAVEFORMS AND DERIVATIVES
First Claim
1. A medical device for delivering a cardiac therapy, comprising:
- a plurality of electrodes;
a therapy module to deliver cardiac pacing signals between the plurality of electrodes at a plurality of pacing rates;
an admittance measurement module to determine admittance signals associated with each of the plurality of pacing rates; and
a control unit configured to determine, for each pacing rate of the plurality of pacing rates, intervals between admittance signals associated with the pacing rate, compare the determined intervals, and determine a pacing rate of the plurality of pacing rates as an optimal rate for delivering the cardiac therapy in response to the determined intervals.
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Accused Products
Abstract
An implantable medical device and associated method to determine an optimal control parameter setting for controlling a cardiac therapy that includes a plurality of electrodes, a therapy module to deliver cardiac pacing signals between the plurality of electrodes at a plurality of pacing rates, an admittance measurement module to determine admittance signals associated with each of the plurality of pacing rates, and a control unit to determine, for each pacing rate of the plurality of pacing rates, intervals between admittance signals associated with the pacing rate, compare the determined intervals, and determine a pacing rate of the plurality of pacing rates as an optimal rate for delivering the cardiac therapy in response to the determined intervals.
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Citations
21 Claims
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1. A medical device for delivering a cardiac therapy, comprising:
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a plurality of electrodes; a therapy module to deliver cardiac pacing signals between the plurality of electrodes at a plurality of pacing rates; an admittance measurement module to determine admittance signals associated with each of the plurality of pacing rates; and a control unit configured to determine, for each pacing rate of the plurality of pacing rates, intervals between admittance signals associated with the pacing rate, compare the determined intervals, and determine a pacing rate of the plurality of pacing rates as an optimal rate for delivering the cardiac therapy in response to the determined intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of delivering a cardiac therapy, comprising:
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delivering cardiac pacing signals at a plurality of pacing rates; determining admittance signals associated with each of the plurality of pacing rates; determining, for each pacing rate of the plurality of pacing rates, intervals between admittance signals associated with the pacing rate; comparing the determined intervals; and determining a pacing rate of the plurality of pacing rates as an optimal rate for delivering the cardiac therapy in response to the determined intervals. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory computer readable medium storing instructions which cause a control unit of an implantable medical device to perform a method, the method comprising:
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delivering cardiac pacing signals at a plurality of pacing rates; determining admittance signals associated with each of the plurality of pacing rates; determining, for each pacing rate of the plurality of pacing rates, intervals between admittance signals associated with the pacing rate; comparing the determined intervals; and determining a pacing rate of the plurality of pacing rates as an optimal rate for delivering the cardiac therapy in response to the determined intervals.
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Specification