In-vivo method and device for improving diastolic function...

A - Human Necessities – 61 – N

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A61N 1/362 (2006.01) A61B 17/00 (2006.01) A61F 2/00 (2006.01) A61M 1/12 (2006.01) A61B 17/04 (2006.01) A61B 17/064 (2006.01)

Patent

CA 2453658

A method and device (26) featuring at least one component (12) providing a potential to kinetic converted elastic, magnetic repulsion, or, an elastic and magnetic repulsion, pushing, pulling, or, pulling and pushing, type of radially outward expansive force or pressure to an inner, outer, intermediate, and, combination thereof, wall region of the left ventricle, for reducing intraluminal hydrostatic pressure of the left ventricle (LV filling pressure) during the ventricular diastolic stage of the cardiac cycle, thereby, improving diastolic function of the left ventricle of the heart in subjects having a condition of diastolic heart failure (DHF), while minimally disturbing systolic function of the heart. The expansive force or pressure is in a range of about 5 - 20 mm Hg, whereby, left ventricular end diastolic pressure (LVEDP) is reduced down to the normal range of about 6 - 12 mm Hg, during ventricular diastole of the heart.

L'invention concerne un procédé et un dispositif comportant au moins un composant capable de fournir un potentiel à une répulsion magnétique élastique convertie en cinétique, ou à une répulsion magnétique et élastique, à pousser, tirer, ou à tirer et pousser une espèce de force ou de pression d'expansion qui s'étend radiallement vers l'extérieur vers une paroi latérale du ventricule gauche interne, externe, intermédiaire, et les trois à la fois, afin de réduire la pression hydrostatique intraluminale du ventricule gauche (pression de remplissage du ventricule gauche) au cours de l'étape diastolique ventriculaire du cycle cardiaque, ce qui permet d'améliorer la fonction diastolique du ventricule gauche du coeur chez des sujets souffrant d'insuffisance cardiaque diastolique, tout en gênant le moins possible la fonction systolique cardiaque. La force ou la pression d'expansion est comprise entre environ 5 et 20 mm Hg, ce qui permet d'abaisser la pression diastolique de l'extrémité du ventricule gauche à une valeur normale comprise entre 6 et 12 mm Hg au cours de la diastole ventriculaire du coeur.

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