초록 ▼

A generally cylindrical membrane-type fiber bundle blood oxygenator concentrically surrounds a generally cylindrical blood heat exchanger including a fiber bundle made of thousands of polymer material micro-conduits. A heat transfer fluid such as water is introduced into the upper end of the heat ex

A generally cylindrical membrane-type fiber bundle blood oxygenator concentrically surrounds a generally cylindrical blood heat exchanger including a fiber bundle made of thousands of polymer material micro-conduits. A heat transfer fluid such as water is introduced into the upper end of the heat exchanger and flows downwardly around the outside surfaces of the micro-conduits to an outlet. Upper and lower seals of urethane potting compound separate the heat transfer fluid from the open ends of the micro-conduits through which blood flows. A transition manifold at the upper end of the heat exchanger directs out flowing blood radially outwardly to the upper end of the oxygenator fiber bundle. The blood flows downwardly around the outside surfaces of the fibers of the oxygenator fiber bundle to a blood outlet manifold that collects the oxygenated blood. Upper and lower seals made of urethane potting compound separate the blood flowing around the fibers of the oxygenator fiber bundle from a gas mixture flowing into and out of the open ends of the fibers through upper and lower venous gas headers.

대표청구항 ▼

[ What is claimed is:] [1.] A blood oxygenator, comprising:a heat exchanger including a housing and a plurality of conduits extending through an interior of the housing;a first seal surrounding the exterior surfaces of a first set of ends of the conduits and a second seal surrounding the exterior su

[ What is claimed is:] [1.] A blood oxygenator, comprising:a heat exchanger including a housing and a plurality of conduits extending through an interior of the housing;a first seal surrounding the exterior surfaces of a first set of ends of the conduits and a second seal surrounding the exterior surfaces of a second set of ends of the conduits, the first and second seals engaging an inner surface of the heat exchanger housing to prevent a heat transfer fluid flowing around the exterior surfaces of the conduits within the interior of the housing from mixing with blood flowing through the conduits;a heat transfer fluid inlet communicating with the interior of the heat exchanger housing;a heat transfer fluid outlet communicating with the interior of the heat exchanger housing;a blood inlet manifold for delivering blood from a first tube to a first set of ends of the conduits of the heat exchanger;a generally cylindrical oxygenator fiber bundle concentrically surrounding the heat exchanger;a vessel surrounding the oxygenator fiber bundle;a third seal surrounding the exterior surfaces of a first set of ends of a plurality of hollow fibers of the oxygenator bundle and a fourth seal surrounding the exterior surfaces of a second set of ends of a the fibers of the oxygenator bundle, the third and fourth seals engaging the housing of the heat exchanger and the vessel to prevent blood flowing around the exterior surfaces of the fibers of the oxygenator bundle from communicating with the hollow interiors of the fibers of the oxygenator fiber bundle;a transition manifold for delivering blood from a set of second ends of the conduits of the heat exchanger around the exterior surfaces of the fibers of the oxygenator fiber bundle in a first portion of the oxygenator bundle;an outlet manifold for delivering blood from around the exterior surfaces of the fibers of the oxygenator fiber bundle in a second portion of the oxygenator fiber bundle to a second tube;an inlet header coupled to the vessel for directing a venous gas mixture from a first hose to the first ends of the hollow fibers of the oxygenator fiber bundle so that the gas mixture flows therethrough; andan outlet header coupled to the vessel for directing the venous gas mixture flowing out of the second ends of the hollow fibers of the oxygenator bundle to a second hose.