Method for eliminating atrial far-field signals in ventricular channels for implantable cardiac pacemaker

A cardiac pacemaker and implantable technology, applied in the field of medical devices, can solve problems such as the interference of the normal work of the pacemaker, and achieve the effect of eliminating inhibition and ensuring life

Inactive Publication Date: 2017-02-01
SHAANXI QINMING MEDICAL CO LTD
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  • Description
  • Claims
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Problems solved by technology

However, clinical studies have shown that the atrial signal also forms a far-field signal in the ventricular channel and interferes with the normal operation of the pacemaker

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  • Method for eliminating atrial far-field signals in ventricular channels for implantable cardiac pacemaker
  • Method for eliminating atrial far-field signals in ventricular channels for implantable cardiac pacemaker
  • Method for eliminating atrial far-field signals in ventricular channels for implantable cardiac pacemaker

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings:

[0037] See Figure 2- Figure 7 , AS stands for atrial perception; AP stands for atrial pacing; AR stands for atrial refractory period perception; VS stands for ventricular perception; VP stands for ventricular pacing; VR stands for ventricular refractory period perception; PVC stands for ventricular premature beats; PVAB stands for retroventricular atrium Blank period; PVARP means posterior ventricular refractory period; VBP means absolute ventricular refractory period; VRP means ventricular relative refractory period.

[0038] Figure 2 shows the definition of "atrial and ventricular perception window" in the present invention. As shown in Figure 2(a), in the VA interval, the area after the end of the ventricular posterior chamber blank period PVAB, ventricular posterior chamber refractory period PVARP, ventricular absolute refractory period VBP, and ventricular ...

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Abstract

The present invention discloses a method for eliminating atrial far-field signals in ventricular channels for an implantable cardiac pacemaker. The method includes the following steps that: 1) if atrial and ventricular sensing events occur simultaneously in an atrial and ventricular sensing window in a VA interval, the following processing is carried out: 1, if a VV interval is larger than 300ms, current ventricular sensing is ignored, a 100ms safety AV interval is enabled, and 2, if the VV interval is smaller than or equal to 300ms, atrial and ventricular sensing is caused by T waves, and atrial sensing and ventricular sensing are simultaneously ignored, and a 100ms atrial and ventricular absolute refractory period is enabled; and 2) in the AV interval of the atrial sensing, a 50ms long-field signal detection window is enabled, if a ventricular sensing event is detected in the window, and current ventricular sensing is ignored, and a 100ms safety AV interval is enabled, ventricular safety pacing is realized at the tail end of a ventricular sensing window. With the method of the invention adopted, the suppression of ventricular pacing pulses caused by cross sensing can be avoided, and therefore, the life of a patient having atrioventricular block can be effectively protected.

Description

[0001] 【Technical Field】 [0002] The invention belongs to the technical field of medical devices, and relates to a method for eliminating atrial far-field signals in a ventricular channel of an implantable cardiac pacemaker. [0003] 【Background technique】 [0004] Since the first artificial cardiac pacemaker came out in 1958, with the continuous development of medicine and the continuous innovation of pacing technology, the size of the pacemaker has become smaller and smaller, the service life is longer and longer, two-way telemetry and memory function Allows clinicians to program-control pacing parameters and download relevant information on demand. The advent of dual-chamber pacemakers guarantees atrioventricular synchronization. The addition and optimization of various automated functions have also greatly improved the quality of life of patients. The pacemaker is playing an increasing role in the treatment of cardiovascular diseases. [0005] The sinoatrial node is the source of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/362A61N1/37
CPCA61N1/362A61N1/3702A61N1/3706
Inventor 任江波陈小龙朱妙娜
Owner SHAANXI QINMING MEDICAL CO LTD
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