Heart support device

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/10 (2006.01)

Patent

CA 2757653

The invention relates to a heart support device for pulsatile delivery of blood (12) comprising a first (14) and a second (16) ventricle and a pump (18). Both ventricles (14,16) comprises a fluid chamber (14a,16a) and a blood-conveying chamber (14b,16b), wherein each fluid chamber (14a, 16a) can be filled with a fluid (20) or emptied by way of the pump (18) in such a way that an expansion or contraction of the fluid chamber (14a,16a) occurs. In an expansion of the fluid chamber (14a) of a ventricle (14), a compression of the blood-conveying chamber (14b) of the same ventricle takes place, wherein a rigid pressure plate (24) is disposed between a fluid chamber (14a,16a) and the respective blood-conveying chamber (16a,16b), said pressure plate being able to move in the direction of the respective blood-conveying chamber (14b,16b).

L'invention concerne un système d'assistance cardiaque destiné à assurer un flux pulsatile du sang (12), ce système comprenant un premier (14) et un second (16) ventricule et une pompe (18). Les deux ventricules (14, 16) présentent chacun une chambre à fluide (14a, 16a) et une chambre de circulation sanguine (14b, 16b), un fluide (20) pouvant être acheminé dans chaque chambre à fluide (14a, 16a) ou évacué de chaque chambre à fluide (14a, 16a) au moyen de la pompe (18) de manière à entraîner une expansion ou une contraction de la chambre à fluide (14a, 16a). Une expansion de la chambre à fluide (14a) d'un ventricule (14) entraîne une compression de la chambre de circulation sanguine (14b) de ce même ventricule. Selon l'invention, une plaque de pression (24) rigide est disposée entre une chambre à fluide (14a, 16a) et la chambre de circulation sanguine (14b, 16b) correspondante, cette plaque de pression pouvant être déplacée en direction de ladite chambre de circulation sanguine (14b, 16b) correspondante.

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