Circulatory support system and method of use for isolated...

A - Human Necessities – 61 – M

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A61M 1/36 (2006.01) A61M 25/00 (2006.01) A61M 25/10 (2006.01)

Patent

CA 2331323

A circulatory support system and method for circulatory support are described for performing cardiopulmonary bypass using differential perfusion and/or isolated segmental perfusion of the circulatory system. The circulatory support system includes one or more venous cannulae for draining blood from the venous side of the patient's circulatory system, one or more arterial cannulae for perfusing the arterial side of the patient's circulatory system, and one or more blood circulation pumps connected between the venous cannulae and the arterial cannulae. The arterial cannulae and the venous cannulae of the circulatory support system may take one of several possible configurations. The circulatory support system is configured to segment a patient's circulatory system into one or more isolated circulatory loops. The circulatory loops may be isolated from one another and/or from the remainder of the patient's circulatory system on the venous side, as well as on the arterial side, for isolated closed loop circulatory support of separate organ systems. The circulatory support system is suitable for use in minimally- invasive cardiac surgery, using thoracoscopic, port-access or minithoracotomy techniques, or for standard open-chest cardiac surgery.

L'invention concerne un appareil d'assistance circulatoire et un procédé associé permettant de réaliser un pontage cardio-pulmonaire au moyen d'une irrigation différentielle et/ou d'une irrigation segmentaire isolée de l'appareil circulatoire. L'appareil d'assistance circulatoire comprend une ou plusieurs canules veineuses permettant de purger le sang de la partie veineuse de l'appareil circulatoire du patient, une ou plusieurs canules artérielles permettant d'irriguer le côté artériel de l'appareil circulatoire du patient et une ou plusieurs pompes de circulation sanguine reliées entre les canules veineuses et les canules artérielles. Celles-ci peuvent adopter une ou plusieurs configurations. L'appareil d'assistance circulatoire est configuré de manière à segmenter l'appareil circulatoire d'un patient en une ou plusieurs boucles de circulation isolée(s). Les boucles peuvent être isolées les unes des autres et/ou du reste de l'appareil circulatoire du patient sur le côté veineux, ainsi que sur le côté artériel, en vue d'une assistance circulatoire de la boucle fermée isolée d'appareils d'organes séparés. L'appareil d'assistance circulatoire se prête à une utilisation en chirurgie cardiaque à effraction minimale, au moyen de techniques de thoracoscopie, de chambre à injection ou de minithoracotomie ou en chirurgie cardiaque standard à coeur ouvert.

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