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A medical implant for the detection of evoked potentials with an adaptive detection time window after
A medical implant for the detection of evoked potentials with an adaptive detection time window after
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机译：用于在诱发后以自适应检测时间窗检测诱发电位的医用植入物
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摘要
A medical implant comprising pulse generator means (2.2) for delivering stimulation pulses to at least one chamber of a patient's heart (2.1), an evoked response detector (2.3) for distinguishing capture from loss of capture from the value of a selected one of a plurality of parameters obtainable from an IEGM signal sensed in an evoked response detection time window following delivery of a stimulation pulse, and a setting means (2.4) for setting a minimum tolerable difference between values of said selected parameter obtained in case of capture and in case of loss of capture respectively. A first calculation means (2.5) is provided to calculate for each of said parameters the length of the evoked response detection time window for which said minimum tolerable difference is obtained, and in that a first selecting means (2.8) is provided to select that parameter for distinguishing capture and loss of capture for which said minimum tolerable difference is obtained with the shortest evoked response detection time window. As an alternative, the evoked response detection window can have a fixed length, and a second calculation means can be provided to calculate for each of said parameters the difference between the value of the parameter obtained in case of capture and in case of loss of capture respectively, and a second selecting means can be provided to select that parameter for distinguishing capture and loss of capture by comparison with said minimum tolerable difference for which a maximum difference is obtained.
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