Anti-tachycardia pacing methods and devices

a multi-chamber, anti-tachycardia technology, applied in the direction of heart stimulators, electrotherapy, therapy, etc., can solve the problems of inability to provide enough blood to the ventricle, inability to achieve high-voltage shock, if required, and inability to achieve one hundred percent success of returning the heart to the normal sinus rhythm

Inactive Publication Date: 2007-03-13
PACESETTER INC
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Problems solved by technology

As used herein, the term tachycardia means a heartbeat at a rate which is abnormally high and accordingly considered to be dangerous if permitted to continue, or any arrhythmia involving recognizable heartbeat patterns containing repetitions which are in excess of a periodic heartbeat within a safe range.
When ventricular tachycardia (VT) occurs, the ventricles may not be able to fill with enough blood to supply the body with the oxygen rich blood that it needs.
The high voltage shock, if required, is usually painful to the patient.
However, conventional ATP has not proved to be one hundred percent successful at returning the heart to normal sinus rhythm.
Tachycardia is often the result of electrical feedback within the heart; a natural beat results in the feedback of an electrical stimulus which prematurely triggers another beat.

Method used

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Embodiment Construction

[0029]The following description is of the best mode presently contemplated for practicing the invention. This description is not to be taken in a limiting sense but is made merely for the purpose of describing the general principles of the invention. The scope of the invention should be ascertained with reference to the issued claims. In the description of the invention that follows, like numerals or reference designators will be used to refer to like parts or elements throughout.

I. EXEMPLARY STIMULATION DEVICE

[0030]As shown in FIG. 1, there is a stimulation device 10 in electrical communication with a patient's heart 12 by way of three leads, 20, 24 and 30, suitable for delivering multi-chamber stimulation and shock therapy. To sense atrial cardiac signals and to provide right atrial chamber stimulation therapy, the stimulation device 10 is coupled to an implantable right atrial lead 20 having at least an atrial tip electrode 22, which typically is implanted in the patient's right ...

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Abstract

An improved method and device for performing anti-tachycardia pacing (ATP) to convert a ventricular tachycardia (VT) to normal sinus rhythm. Pairs of pacing / sensing electrodes are placed in or on each of the left and right ventricles. Each pair of electrodes is shorted together to produce unipolar electrodes that are used for ATP.

Description

[0001]This is a divisional of application Ser. No. 10 / 045,570, filed on Oct. 19, 2001 now U.S. Pat. No. 6,754,531.FIELD OF THE INVENTION[0002]The present invention relates generally to implantable cardiac stimulation devices. The present invention more particularly relates to methods and devices for multi-chamber anti-tachycardia pacing.BACKGROUND OF THE INVENTION[0003]The heart is a series of pumps that are carefully controlled by a very special electrical system. This electrical system attempts to regulate the heart rate between 60 and 100 beats per minute. The initial electrical signal originates near the top of the upper chamber on the right side of the heart. This chamber is called the “right atrium” and the special tissue that generates the signal is called the “sino-atrial” or SA node.[0004]The electrical signal continues in a downward fashion through the “atrio-ventricular” or AV node, where the signal is slowed slightly by special tissue. The AV node is the “doorway” or rel...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61N1/00A61N1/362A61N1/368
CPCA61N1/3622A61N1/3684A61N1/36843A61N1/36842
Inventor KROLL, MARKFAIN, ERIC S.
Owner PACESETTER INC
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