초록 ▼

A closed, air-free blood oxygenator assembly having integrated into one self-supporting unit a rigid-shell blood reservoir having an easily visible, concavity which is closed by an attached expansible, flexible membrane which overlies the concavity and forms a variable volume liquid and air-tight bl

A closed, air-free blood oxygenator assembly having integrated into one self-supporting unit a rigid-shell blood reservoir having an easily visible, concavity which is closed by an attached expansible, flexible membrane which overlies the concavity and forms a variable volume liquid and air-tight blood reservoir, and an attached blood heater, and a hollow fiber membrane oxygenator. The assembly stores, heats, oxygenates and purifies blood by passing oxygen through the lumens of a mat of small diameter gas-permeable hollow fibers supported on a cylindrical core as blood flows over the outside surfaces of the fibers in a small, easy to use, safe, integrated unit which avoids blood contact with ambient air as blood circulates through the assembly during surgery.

대표청구항 ▼

A blood reservoir comprising (1) a self-supporting member having a rigid shell portion defining a concavity opening inwardly into a reservoir chamber and defining a rigid inner wall thereof; (2) flexible membrane means secured by a liquid-tight seal to said shell portion around the periphery of said

A blood reservoir comprising (1) a self-supporting member having a rigid shell portion defining a concavity opening inwardly into a reservoir chamber and defining a rigid inner wall thereof; (2) flexible membrane means secured by a liquid-tight seal to said shell portion around the periphery of said concavity in overlying relationship to said concavity and forming, with said inner wall, said reservoir chamber, whereby said reservoir chamber comprises a variable volume liquid tight chamber; (3) said flexible membrane means interfitting with said overlying the inner wall of said concavity when said chamber is empty amd movable to variable positions outwardly from said inner wall as liquid enters said chamber between said inner wall and membrane means, and (4) blood inlet and outlet means integral with said rigid shell portion of said concavity and communicating with said chamber. A blood reservoir as claimed in claim 1 and arranged with a heat exchanger and a blood oxygenator to provide a blood oxygenator assembly, said heat exchanger being secured to the lower end of said reservoir, said outlet means being adjacent to the lower end of said chamber and comprising blood inlet means for said heat exchanger adjacent to the upper end of the latter, blood outlet means for discharging heated blood from said heat exchanger, said blood oxygenator being secured to the lower end of said heat exchanger and having blood inlet and outlet means.