Abstract:
An extracorporeal blood oxygenation system comprising an integrated blood pump/heat exchanger/membrane oxygenator assembly which is mountable upon, and engageable with, a separate motor/drive assembly. The blood pump of the system incorporates a novel axial/centrifugal impeller assembly. An optional blood reservoir may be incorporated into the system to receive and contain venous return and/or surgical site blood. Also, an optional arterial filter may be incorporated into the system for filtering the oxygenated blood before the blood is returned to the patient. The pump/heat exchanger/membrane oxygenator component is preferably constructed such that heat exchange fluid which is being infused into the heat exchanger will pass through and/or in contact with a portion of the membrane oxygenator so as to further maintain the temperature of blood as it passes through the membrane oxygenator.
Abstract:
A blood oxygenator/heat exchanger system (10) includes disposable and durable components, the latter being possible of permanent installation to further reduce costs, inconvenience and risks of use. The system may selectively include a blood pump (136) of axial, centrifugal, or ventricular type, along with an integral venous reservoir (206). By combination, arrangement and cooperation of structural features blood pumping volume is decreased, advantageous blood flow paths are achieved, blood damage is reduced, and durable components are reusable for lowest costs. The oxygenator/heat exchanger (58) nests upon a durable heat source base (24) to be supported thereby, while redundant boundaries are provided between blood and heat transfer media.
Abstract:
Un système oxygénateur de sang/échangeur de chaleur (10) comprend des composants jetables et durables, ces derniers pouvant être montés à demeure afin de réduire d'avantage les coûts, les inconvénients et les risques d'utilisation. Le système peut comprendre une pompe à sang (136) de type axial, centrifuge ou ventriculaire ainsi qu'un réservoir de sang veineux intégré (206). Grâce à l'agencement et la coopération combinés d'éléments structuraux, le volume de pompage du sang est diminué, des chemins de circulation du sang avangateux sont obtenus, les éventuels dégâts du sang sont réduits, et les composants durables peuvent être réutilisés afin d'abaisser les coûts. L'oxygénateur/échangeur de chaleur (58) s'emboîtent sur une base de source thermique durable (24) qui joue le rôle de support, des éléments frontières étant prévus entre le sang et les milieux de transfert de chaleur.