His capture verification using electro-mechanical delay
First Claim
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1. An ambulatory medical device, comprising:
- a cardiac stimulation circuit configured to generate a His-bundle stimulation energy to provide stimulation to a His-bundle;
a processor circuit, including;
a data input, configured to receive first cardiac activity information in response to a His-bundle stimulation energy provided by the cardiac stimulation circuit to the His-bundle, the first cardiac activity information from other than an intrinsic electrical heart signal, and the first cardiac activity information received using a first sensor; and
a processor-readable medium, including instructions that, when performed by the processor, configure the medical device to;
determine a first interval using the first cardiac activity information in response to the His-bundle stimulation energy provided by the cardiac stimulation circuit to the His-bundle; and
provide a cardiac stimulation diagnostic indication about His-bundle capture using the first interval.
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Abstract
Stimulation energy can be provided to a His-bundle to activate natural cardiac contraction mechanisms. Interval information can be used to describe a cardiac response to His-bundle stimulation, and the interval information can provide cardiac stimulation diagnostic information. For example, interval information can be used to discriminate between intrinsic conduction cardiac contractions and contractions responsive to His-bundle pacing.
238 Citations
20 Claims
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1. An ambulatory medical device, comprising:
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a cardiac stimulation circuit configured to generate a His-bundle stimulation energy to provide stimulation to a His-bundle; a processor circuit, including; a data input, configured to receive first cardiac activity information in response to a His-bundle stimulation energy provided by the cardiac stimulation circuit to the His-bundle, the first cardiac activity information from other than an intrinsic electrical heart signal, and the first cardiac activity information received using a first sensor; and a processor-readable medium, including instructions that, when performed by the processor, configure the medical device to; determine a first interval using the first cardiac activity information in response to the His-bundle stimulation energy provided by the cardiac stimulation circuit to the His-bundle; and provide a cardiac stimulation diagnostic indication about His-bundle capture using the first interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An ambulatory medical device, comprising:
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a cardiac stimulation circuit configured to generate a His-bundle stimulation energy to provide stimulation to a His-bundle; a processor circuit, including; a first data input, configured to receive first cardiac activity information, from an intrinsic electrical heart signal, using a first sensor; and a second data input, configured to receive second cardiac activity information in response to a His-bundle stimulation energy provided by the cardiac stimulation circuit to the His-bundle, the second cardiac activity information from other than an intrinsic electrical heart signal, and the second cardiac activity information received using the first sensor; and a processor-readable medium, including instructions that, when performed by the processor, configure the medical device to; determine a first interval using the first cardiac activity information; determine a second interval using the second cardiac activity information in response to the His-bundle stimulation energy provided by the cardiac stimulation circuit to the His-bundle; form a cardiac stimulation diagnostic metric using at least the first interval; and provide a cardiac stimulation diagnostic indication about His-bundle capture using the cardiac stimulation diagnostic metric and the second interval.
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11. A method comprising:
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generating, using an ambulatory medical device, a His-bundle stimulation energy to provide stimulation to a His-bundle; stimulating a His-bundle at a first time using the His-bundle stimulation energy; receiving first cardiac activity information, from other than an intrinsic electrical heart signal, from a first sensor at a second time, the first cardiac activity information indicative of a cardiac response to the stimulating the His-bundle at the first time using the His-bundle stimulation energy; computing a first time interval using the first time and the second time; and providing a cardiac stimulation diagnostic indication about His-bundle capture using the computed first time interval. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification