Implantable heart assist system

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/10 (2006.01) A61M 1/36 (2006.01) A61M 39/10 (2006.01)

Patent

CA 2305443

An extracardiac pumping system (10) for supplementing the circulation of blood through a patient without any component thereof being connected to the patient's heart, and method of using same. The extracardiac system comprises a pump (32) implanted subcutaneously at or about the patient's groin in a minimally-invasive procedure, wherein the pump is powered by a battery (44), and means for charging the battery extracorporeally, wherein the pump draws blood through an inflow conduit (50) fluidly coupled to the patient's femoral artery (26) via a subcutaneous anastomosis connection, and discharges blood through an outflow conduit (52) fluidly coupled to a peripheral artery that stems from the patient's aortic arch via a subcutaneous anastomosis connection. The pump may be operated continuously or in a pulsatile fashion, synchronous with the patient's heart, thereby potentially reducing the pumping load on the heart.

On décrit un procédé et un système de pompage extracardiaque (10) pouvant suppléer la circulation sanguine chez un patient sans qu'aucun élément dudit système ne soit raccordé au coeur du patient. Ce système de pompage extracardiaque comprend une pompe (32) implantée sous la peau du patient ou autour de son aine par intervention chirurgicale avec effraction minimale. La pompe est alimentée par une pile (44) et par un moyen extracorpel de chargement de la pile. La pompe aspire le sang à travers une conduite d'amenée (50) communiquant librement avec l'artère fémorale (26) du patient via un raccordement anastomotique sous-cutané, et décharge le sang à travers une conduite de décharge (52) communiquant librement avec une artère périphérique partant de l'arc aortique du patient via un raccordement anastomotique sous-cutané. La pompe peut fonctionner en continu ou de manière pulsatoire, en synchronisation avec le coeur du patient, ce qui permet de réduire potentiellement la charge de pompage sur le coeur.

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