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An apparatus and a method for programming a pacemaker

A programming device and pacemaker technology, applied in electrotherapy, cardiac stimulator, therapy, etc., can solve problems such as delay and inability to obtain equipment for exercise optimization

Inactive Publication Date: 2009-09-23
IMPERIAL INNOVATIONS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2) Atrioventricular ("AV") delay
Problems also exist in medical institutions where equipment for exercise optimization is not available

Method used

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  • An apparatus and a method for programming a pacemaker
  • An apparatus and a method for programming a pacemaker
  • An apparatus and a method for programming a pacemaker

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0085] This is a hypothetical example illustrating why the paced AV optimum is longer than the sensed AV optimum. Left AV delay has an important effect on cardiac output and systemic hemodynamics.

[0086] image 3 a shows the blood pressure versus time plot for a hypothetical example of optimally sensed AV delay. The left AV delay is probably the most important in affecting systemic hemodynamics. In this example, the left AV delay for optimal system hemodynamics is 110 ms. If this is implemented with atrial sensing, atrial sensing delay (here 30ms) and intra-atrial delay (here 70ms) must be allowed. This hypothetical patient would thus require a sensed AV delay of 110+70-30=150 ms.

[0087] image 3 b shows the corresponding graph, but with the paced AV delay programmed to the same value as the sensed AV delay (150 ms in this case). This does not produce the same left AV delay. Atrial pacing latency and longer intraatrial delays imply that sensed and paced AV delays re...

example 2

[0090] object

[0091] The study involved 20 outpatients with implanted biventricular pacemakers or biventricular defibrillators for clinical indications (NYHA III or IV heart failure, QRS > 120 ms, maximal medical therapy). Patients who were not in sinus rhythm, pacing dependent, or unable to ambulate or ambulatory were excluded.

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Abstract

A pacemaker programming apparatus for programming a pacemaker in an individual. The apparatus comprises means for determining the sensed-paced difference of the pacemaker in the individual: first testing means for determining the optimum AV delay while the pacemaker is atrially pacing at a raised at a heart rate; and calculation means for calculating the optimum AV delay determined by the first testing means minus the sensed-paced difference.

Description

technical field [0001] The present invention relates to a pacemaker programming device and a computer program for a pacemaker programming device. The present invention also relates to a method for determining a difference in sensed pacing in an individual with a pacemaker; a method for determining the AV delay of a pacemaker; and a method for programming a pacemaker Methods. Background technique [0002] It is well known to install pacemakers into patients with chronic heart failure in which the walls of the ventricles (the main pumping chambers of the human heart) are no longer in sync. Such pacemakers are known as biventricular (or resynchronizing) pacemakers and can be used in cardiac resynchronization therapy (CRT). Biventricular pacemakers stimulate the left and right sides of the heart in order to shorten the AV delay and improve the synchrony of ventricular contractions without changing the heart rate itself. It has been found that fitting a biventricular pacemaker...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/362A61N1/372A61N1/365A61N1/368
CPCA61N1/36564A61N1/3627A61N1/3688A61N1/3682A61N1/37235A61N1/37264
Inventor Z·惠尼特D·弗朗西斯
Owner IMPERIAL INNOVATIONS LTD
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