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AssigneePacesetter, Inc.
InventorRichard Lu
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An implantable cardiac stimulation device and method perform reliable, automatic capture verification during bipolar stimulation by eliminating capture verification during a cardiac cycle in which anodal stimulation is detected. Anodal stimulation is detected by the absence of a delay between the bipolar stimulation pulse and an evoked response sensed at the electrode functioning as the anode during stimulation. Automatic capture verification during bipolar stimulation is recommended only if anodal stimulation is not detected at a working stimulation output. During automatic capture verification, if anodal stimulation is detected, a capture threshold test is performed. A change in anodal stimulation threshold indicates a change in capture threshold. Thus, periodic anodal stimulation threshold tests are also performed to predict when a change in capture threshold has occurred. The device avoids adverse effects of anodal stimulation on evoked response detection and provides a method for predicting changes in capture threshold.
In a cardiac stimulation device, a method of performing automatic capture verification in a cardiac chamber during bipolar stimulation, the method comprising:
A cardiac stimulation device that performs automatic capture verification during bipolar stimulation, comprising:
A cardiac stimulation device that performs automatic capture verification during bipolar stimulation, the device comprising:
In an implantable cardiac stimulation device, a method of determining whether an operating mode comprising capture verification combined with bipolar stimulation is warranted, wherein the implantable cardiac stimulation device includes a lead having at least two electrodes capable of bipolar stimulation, the method comprising:
Dependencies are inferred from the claim text.