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System and method for multiple site biphasic stimulation to restore ventricular arrhythmias

A device, ventricular technology, used in the field of devices to prevent recurrence

Inactive Publication Date: 2005-06-29
MR3 MEDICAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these patents disclose the use of multiple electrodes, they do not disclose or suggest that such use would gradually (still rapidly) produce the Various re-recurrence points in the ventricle of the

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  • System and method for multiple site biphasic stimulation to restore ventricular arrhythmias
  • System and method for multiple site biphasic stimulation to restore ventricular arrhythmias
  • System and method for multiple site biphasic stimulation to restore ventricular arrhythmias

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Embodiment Construction

[0035] The apparatus and method of the present invention can be understood with reference to FIGS. 1-A , 1-B and 2 to 5 .

[0036] Referring to FIG. 1-A, the illustrated heart is connected with veins 103 and has four chambers: right atrium (RA), left atrium (LA), right ventricle (RV), and left ventricle (LV). The illustrated lead 101 enters the right ventricle through the vein 103 , the right atrium, and the tricuspid valve 111 . Individual electrodes 102, 104, 106, 108, and 110 are connected to electrode lead 101 and are in contact with various internal sites within the right ventricle. No absolute range is set for the number or number of individual electrodes required to practice embodiments of the present invention. Typical ranges include 2 to 30 electrodes, although numbers greater than 30 are possible. Furthermore these electrodes do not have set points. In a preferred embodiment, 6 or fewer electrodes are used, 4 in the left ventricle and 2 in the right ventricle. It...

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Abstract

A device and method for preventing relapse of ventricular arrhythmias. Biphasic stimulation acts on multiple sites in the ventricles to restore arrhythmias caused by relapses, especially multiple random relapses. In the preferred embodiment, the first phase of biphasic stimulation is anodal and is at maximum subthreshold amplitude. This anodic phase preconditions the myocardium to accept the second phase (cathode) so that less electrical energy is required to reach the threshold amplitude to produce depolarization. The waveform of anodal phase stimulation over time is a square wave, a ramp wave, or a series of short square wave pulses. Multiple electrodes located at multiple sites in the ventricles can stimulate simultaneously, or they can stimulate sequentially over time to mimic the normal progression of cardiac depolarization. Multiple ventricular electrodes can stimulate from the inner or outer surface. One or both ventricles can receive biphasic stimulation from multiple electrodes. The present invention can also be used in the atria.

Description

technical field [0001] The present invention relates generally to an apparatus and method for preventing relapse, which is effective in assisting the beating of a diseased heart, especially a heart which has conditions which prevent the heart from functioning normally by producing ventricular fibrillation. Rhythmic, electrical conductivity, and / or contractility. In particular, the present invention relates to a relapse prevention device and method that enables simultaneous or progressive biphasic stimulation at multiple sites in one or both ventricles. Background technique [0002] Heart disease and heart disorders are the leading killers of both men and women in the United States. Various conditions can affect the pattern of the heartbeat, prompting the study of ventricular fibrillation. This severe and ineffective rhythm can be managed with conventional pacemakers, for example, such as such disorders as sinoatrial (SA) nodal block, A-V block, and multiple Constriction a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N1/368A61N1/362
CPCA61N1/3622A61N1/368
Inventor 莫顿·M·莫厄尔
Owner MR3 MEDICAL LLC
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