FAULT-TOLERANT HIGH VOLTAGE DELIVERY IN AN IMPLANTABLE MEDICAL DEVICE
First Claim
1. A medical device comprising:
- an energy storage device configured to store electrical energy for delivery of defibrillation therapy to a heart;
a plurality of electrodes;
a memory that stores N therapy configurations, each of the N therapy configurations defining which of the plurality of electrodes are used to deliver defibrillation therapy and further defining a waveform to be applied during delivery of defibrillation therapy, wherein N is an integer that is greater than 1;
a switching circuit configured to connect the plurality of electrodes to the energy storage device; and
a processing module configured to;
control the switching circuit to deliver defibrillation therapy according to a first therapy configuration of the N therapy configurations;
detect a fault during delivery of the defibrillation therapy according to the first therapy configuration; and
select a second therapy configuration of the N therapy configurations based on when the fault was detected during delivery of the defibrillation therapy according to the first therapy configuration.
1 Assignment
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Accused Products
Abstract
A medical device includes an energy storage device, a plurality of electrodes, a memory, a switching circuit, and a processing module. The energy storage device stores electrical energy for delivery of defibrillation therapy to a heart. The memory stores N therapy configurations, each of the N therapy configurations defining which of the plurality of electrodes are used to deliver defibrillation therapy and further defining a waveform to be applied during delivery of defibrillation therapy. The switching circuit is configured to connect the plurality of electrodes to the energy storage device. The processing module is configured to control the switching circuit to deliver defibrillation therapy according to a first therapy configuration, detect a fault during delivery of the defibrillation therapy according to the first therapy configuration, and select a second therapy configuration based on when the fault was detected during delivery of the defibrillation therapy according to the first therapy configuration.
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Citations
28 Claims
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1. A medical device comprising:
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an energy storage device configured to store electrical energy for delivery of defibrillation therapy to a heart; a plurality of electrodes; a memory that stores N therapy configurations, each of the N therapy configurations defining which of the plurality of electrodes are used to deliver defibrillation therapy and further defining a waveform to be applied during delivery of defibrillation therapy, wherein N is an integer that is greater than 1; a switching circuit configured to connect the plurality of electrodes to the energy storage device; and a processing module configured to; control the switching circuit to deliver defibrillation therapy according to a first therapy configuration of the N therapy configurations; detect a fault during delivery of the defibrillation therapy according to the first therapy configuration; and select a second therapy configuration of the N therapy configurations based on when the fault was detected during delivery of the defibrillation therapy according to the first therapy configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A medical device comprising:
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an energy storage device configured to store electrical energy for delivery of defibrillation therapy to a heart; a plurality of electrodes; a switching circuit configured to connect the plurality of electrodes to the energy storage device; and a processing module configured to; control the switching circuit to deliver defibrillation therapy using a first set of the plurality of electrodes and using a biphasic waveform that includes first and second phases; detect a fault during one of the first and second phases of the biphasic waveform; and select a second set of the plurality of electrodes and one of a biphasic or monophasic waveform for delivery of a subsequent defibrillation therapy, wherein the selection is based on which one of the first and second phases of the biphasic waveform included the detected fault. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method comprising:
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storing N therapy configurations in a memory of a medical device, each of the N therapy configurations defining which of a plurality of electrodes are used to deliver defibrillation therapy and further defining a waveform to be applied during delivery of defibrillation therapy, wherein N is an integer that is greater than 1; controlling a switching circuit to deliver defibrillation therapy from an energy storage device according to a first therapy configuration of the N therapy configurations; detecting a fault during delivery of the defibrillation therapy according to the first therapy configuration; and selecting a second therapy configuration of the N therapy configurations based on when the fault was detected during delivery of the defibrillation therapy according to the first therapy configuration. - View Dependent Claims (28)
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Specification