Artificial lung device
AssigneeNipro Corporation
InventorsShunsuke Kikumoto, Naoaki Yasumura, Rui Minohara
Life of this patent
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Abstract
An artificial lung device includes: a housing which is formed in a tubular shape including both end portions closed, includes a blood inflow port and a blood outflow port, and is arranged such that a center axis of the housing is directed in a lateral direction; a hollow fiber body (gas exchanger) which is arranged in the housing and performs gas exchange with respect to blood while the blood flows from the blood inflow port to the blood outflow port; and a straightening frame (gas guide portion) by which a gas having flowed through the gas exchanger by the flow of the blood is guided to the gas exchanger again in the housing.
Claims19
An artificial lung device comprising:
- a housing including a blood inflow port and a blood outflow port and arranged such that a center axis of the housing is directed in a lateral direction;
- a gas exchanger arranged in the housing and configured to perform gas exchange with respect to blood while the blood flows from the blood inflow port to the blood outflow port;
- a filter structure arranged around the gas exchanger;
- an opposing wall arranged so as to be opposed to a surface of the gas exchanger;
- and
- a space constituted by the opposing wall and/or the filter structure, wherein
- the opposing wall includes an inclined surface inclined toward the gas exchanger, and/or the filter structure includes an inclined surface inclined toward the gas exchanger,
- the gas exchanger is formed in a columnar shape such that a center axis of the gas exchanger is directed in the lateral direction in the housing,
- the space constitutes a bubble guide portion by which bubbles having flowed through the gas exchanger by flow of the blood are guided to the gas exchanger again in the housing,
- the bubble guide portion includes a straightening surface provided so as to cross a passage extending from the gas exchanger to the blood outflow port,
- the straightening surface is provided so as to be opposed to an outer peripheral surface of the gas exchanger and surround the gas exchanger,
- the straightening surface includes:
- a first straightening surface provided at a relatively lower side and inclined such that a downstream portion of the first straightening surface in a flow direction of the blood is located closer to the outer peripheral surface of the gas exchanger than an upstream portion of the first straightening surface in the flow direction of the blood;
- and
- a second straightening surface provided at a relatively upper side and located closer to the outer peripheral surface of the gas exchanger than the upstream portion of the first straightening surface, and
- when the straightening surface is divided into a lower portion and an upper portion by a predetermined horizontal plane, the lower portion is the first straightening surface, and the upper portion is the second straightening surface.
An artificial lung device comprising:
- a housing including a blood inflow port and a blood outflow port and arranged such that a center axis of the housing is directed in a lateral direction;
- a gas exchanger arranged in the housing and configured to perform gas exchange with respect to blood while the blood flows from the blood inflow port to the blood outflow port;
- a filter structure arranged around the gas exchanger;
- an opposing wall arranged so as to be opposed to a surface of the gas exchanger;
- and
- a space constituted by the opposing wall and/or the filter structure, wherein
- the opposing wall includes an inclined surface inclined toward the gas exchanger, and/or the filter structure includes an inclined surface inclined toward the gas exchanger;
- and
- a separation dimension between the surface of the gas exchanger and the opposing wall gradually decreases to approach zero toward a vertically upper side.
Dependencies are inferred from the claim text.