Method and azimuthal probe for localizing the emergence point of ventricular tachycardias
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United States of America Patent
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Oct 27, 1992
Grant Date -
N/A
app pub date -
Aug 28, 1989
filing date -
Oct 27, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Device permitting localization of the emergence point of ventricular tachycardias in cardiological medicine, characterized, in comparison with traditional cardiac mapping, by: a precision of the same order, its speed of use, its low cost and the further possibility of localizing the macro-re-entry pathway (around aneurysms, for example). In distinction to traditional mapping, this device dispenses with the construction of a map of isochrones (14). The principle of the device according to the invention is based on localization of the propagation of the myocardial cell depolarization, or of the muscle contraction of the heart (15) which results directly therefrom. This localization is carried out in stages (17) over the length of its pathway (13) from an arbitrary point (16) on the heart chosen by the operator, retracing this pathway as far as its source (12'), which is referred to as the emergence point.
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