Atrial dynamic overspeed pace-making device

Abstract

The invention discloses an atrial dynamic overspeed pace-making device, which is characterized in that after an atrial perception event is identified, a data statistics module calculates and stores a current average ventricular period according to a historical ventricular period; the pacing control module obtains the current average ventricular period from the storage module, calculates the current overspeed pacing interval, and sets the current target overspeed pacing times as the maximum overspeed pacing times; after the atrial pace-making event is implemented, the data statistics module calculates and stores the current average ventricular period according to the historical ventricular period; the pacing control module counts the current overspeed pacing times of the atrial pacing event, when the current overspeed pacing times are larger than or equal to the current target overspeed pacing times, the current average atrial period is obtained from the storage module, the current overspeed pacing interval is calculated, and meanwhile the current target overspeed pacing times are reduced and updated; resetting the current overspeed pace-making times to be 0; the pacing control module controls the implementation of an atrial pacing event according to the current overspeed pacing interval.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to an atrial dynamic overspeed pacemaker. Background technique [0002] Atrial fibrillation (Atrial Fibrillation, AF) is the most common clinical tachyarrhythmia. Implantable medical devices can monitor the intracavity electrocardiographic information of the atria and ventricles respectively. By observing the intracavity electrograms collected by implanted medical devices, researchers found that 72% of atrial fibrillation had changes in heart rhythm before the onset of atrial fibrillation; about 48 Paroxysmal atrial premature beats (PAC) occurred first in 33% of patients, sinus bradycardia was found first in about 33% of patients, atrial fibrillation occurred suddenly in about 17% of patients, and 33% of atrial fibrillation occurred in the last atrial fibrillation Within five minutes of onset (recurrent atrial fibrillation). For these causes of atrial fibrillation, specific pacing m...

AI Technical Summary

Problems solved by technology

[0006] However, the current dynamic atrial overspeed pacing scheme has certain limitations. First, the setting of the overspeed pacing frequency is mostly based on the increase or decrease of the current pacing frequency. Finally, if the frequency increase value is low, it may be necessary to increase the frequency several times to make the pacing frequency exceed the natural heart rate, and the effect of overspeed pacing is not good; and if the frequency increase value is too large, the pacing frequency may be too high. not getting close enough to the spontaneous heart rate

The second is to search for the spontaneous heart rate. If the step-down search scheme is used, the pacing frequency cannot quickly track the spontaneous heart rate when the spontaneous heart rate drops rapidly, causing the pacemaker to work at a high pacing frequency for a long time; If the search scheme is continuously decreased, the pacing frequency will continue to decrease during the search process, and the spontaneous heart rate will appear more frequently, which is not conducive to the realization of the expected function of dynamic overspeed pacing

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