Line electrode oriented relative to fiber direction

Details Line electrode oriented relative to fiber direction Line electrode oriented relative to fiber direction

A - Human Necessities

61

N

A61N 1/00 (2006.01) A61N 1/05 (2006.01)

Patent

CA 2264828

An electrode terminal (12) is disclosed for delivering a stimulation pulse to the heart or other tissues containing a linear array of fibers (14). The electrode terminal (12) is elongated and adapted for orientation in a direction parallel to the tissue fibers (14). The device of the present invention further includes a power source (26) for electrically energizing the terminal such that the energizing of the terminal reduces the non-uniformity of the transmembrane voltage change in the tissue proximate the electrode which is produced during the stimulation pulse. Nonuniform transmembrane voltage changes are associated with arrhythmic conditions. The linear electrode of the present invention can be used for cardiac pacing, defibrillation, and the termination of tachycardia.

L'invention concerne une borne d'électrode (12) destinée à fournir une impulsion de stimulation au coeur ou à d'autres tissus à disposition linéaire des fibres (14). La borne d'électrode (12), de forme allongée, est conçue pour être orientée dans une direction parallèle à celle des fibres (14) du tissu. Le dispositif décrit dans la présente invention inclut également une source d'alimentation (26) servant à alimenter la borne en courant électrique, de sorte que l'alimentation de la borne permette de réduire les changements non uniformes de tension membranaire dans le tissu proche de l'électrode qui se produisent lors de l'impulsion de stimulation. Lesdites changements non uniformes de tension membranaire sont liés à des états arythmiques. On utilise l'électrode linéaire décrite dans la présente invention pour la stimulation électrique du coeur, pour la défibrillation et pour combattre la tachycardie.

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