Atrial dynamic overdrive pacing device

Abstract

The invention discloses an atrial dynamic overspeed pacing device. After recognizing an atrial sensing event, a data statistics module calculates and stores the current average atrial period according to the historical atrial period; the pacing control module obtains the current average atrial period from the storage module. Atrial period and calculate the current overspeed pacing interval, and set the current target overspeed pacing number as the maximum overspeed pacing number; after implementing the atrial pacing event, the data statistics module calculates the current average atrial period based on the historical atrial period and performs Storage; the pacing control module counts the current overspeed pacing times of atrial pacing events, and when the current overspeed pacing times are greater than or equal to the current target overspeed pacing times, obtain the current average atrial period from the storage module and calculate the current overspeed pacing period At the same time, the current target overspeed pacing times are reduced and updated, and the current overspeed pacing times are reset to 0; the pacing control module implements atrial pacing events according to the current overspeed pacing interval control.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to an atrial dynamic overspeed pacing device. Background technique [0002] Atrial fibrillation (AF) is the most common clinical tachyarrhythmia. Implantable medical devices can monitor the intracavitary electrical information of the atrium and ventricle separately. By observing the intracavitary electrograms collected by the implantable medical device, the researchers found that 72% of atrial fibrillation occurred before the occurrence of cardiac rhythm changes; about 48 Paroxysmal premature atrial beats (PAC) occurred first in % of patients, sinus bradycardia occurred in about 33% of patients, and atrial fibrillation occurred suddenly in about 17% of patients. Within five minutes of onset (recurrent atrial fibrillation). In view of the causes of these atrial fibrillation, specific pacing methods can be used to inhibit the triggering factors of atrial fibrillation, thereby preventi...

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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