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    METHODS OF LEAK TESTING A SURGICAL CONDUIT
    1.
    发明申请
    METHODS OF LEAK TESTING A SURGICAL CONDUIT 审中-公开

    公开(公告)号：US20190056286A1

    公开(公告)日：2019-02-21

    申请号：US16169701

    申请日：2018-10-24

    申请人： Edwards Lifesciences Corporation

    发明人： Mark Van Nest ,  Alyssa E. Kornswiet ,  Jackie P. Lau

    IPC分类号： G01M3/28

    摘要： Systems, devices, and methods for leak testing surgical conduit grafts or valved conduits such as aortic-valved conduits with a pressurized gas such as air. Air is non-destructive and especially useful for leak testing conduits that have coatings or sealants that may be functionally impacted when exposed to fluids such as water or saline. Open ends of the conduit are clamped and sealed, and a pressurized gas introduced into an inner lumen thereof. A change in mass flow rate is measured to quantify the leakage. One end of a tubular conduit may be clamped to a fixed manifold, and the opposite end to a manifold slidably mounted to accommodate any conduit elongation when pressurized. The clamping and sealing structure may be pneumatic and/or mechanical, and complementary contoured clamp members may be used to seal a scalloped external sealing ring of an aortic conduit.

    Systems for leak testing a valved conduit
    5.
    发明授权
    Systems for leak testing a valved conduit 有权

    公开(公告)号：US11561151B2

    公开(公告)日：2023-01-24

    申请号：US17379830

    申请日：2021-07-19

    申请人： Edwards Lifesciences Corporation

    发明人： Mark Van Nest ,  Alyssa E. Kornswiet ,  Jackie P. Lau

    IPC分类号： G01M3/28

    摘要： Systems, devices, and methods for leak testing surgical conduit grafts or valved conduits such as aortic-valved conduits with a pressurized gas such as air. Air is non-destructive and especially useful for leak testing conduits that have coatings or sealants that may be functionally impacted when exposed to fluids such as water or saline. Open ends of the conduit are clamped and sealed, and a pressurized gas introduced into an inner lumen thereof. A change in mass flow rate is measured to quantify the leakage. One end of a tubular conduit may be clamped to a fixed manifold, and the opposite end to a manifold slidably mounted to accommodate any conduit elongation when pressurized. The clamping and sealing structure may be pneumatic and/or mechanical, and complementary contoured clamp members may be used to seal a scalloped external sealing ring of an aortic conduit.

    SYSTEMS FOR LEAK TESTING A VALVED CONDUIT
    6.
    发明申请
    SYSTEMS FOR LEAK TESTING A VALVED CONDUIT 有权

    公开(公告)号：US20210348983A1

    公开(公告)日：2021-11-11

    申请号：US17379830

    申请日：2021-07-19

    申请人： Edwards Lifesciences Corporation

    发明人： Mark Van Nest ,  Alyssa E. Kornswiet ,  Jackie P. Lau

    IPC分类号： G01M3/28

    摘要： Systems, devices, and methods for leak testing surgical conduit grafts or valved conduits such as aortic-valved conduits with a pressurized gas such as air. Air is non-destructive and especially useful for leak testing conduits that have coatings or sealants that may be functionally impacted when exposed to fluids such as water or saline. Open ends of the conduit are clamped and sealed, and a pressurized gas introduced into an inner lumen thereof. A change in mass flow rate is measured to quantify the leakage. One end of a tubular conduit may be clamped to a fixed manifold, and the opposite end to a manifold slidably mounted to accommodate any conduit elongation when pressurized. The clamping and sealing structure may be pneumatic and/or mechanical, and complementary contoured clamp members may be used to seal a scalloped external sealing ring of an aortic conduit.

    METHODS OF ASSEMBLING VALVED AORTIC CONDUITS
    7.
    发明申请
    METHODS OF ASSEMBLING VALVED AORTIC CONDUITS 有权

    公开(公告)号：US20210267758A1

    公开(公告)日：2021-09-02

    申请号：US17321358

    申请日：2021-05-14

    申请人： Edwards Lifesciences Corporation

    发明人： Michael C. Murad ,  Hilda Z. Fann ,  Mark Van Nest ,  John X. Wang ,  Derrick Johnson

    IPC分类号： A61F2/24

    摘要： A valved conduit including a bioprosthetic aortic heart valve connected to a tubular conduit graft forming an ascending aorta. The conduit graft may attach to the heart valve in a manner that facilitates a redo operation in which the valve is replaced with another valve. A sewing ring may be pre-attached to the inflow end of the graft, and then the valve connected to a delivery holder advanced into the graft and secured to the sewing ring. Dry bioprosthetic valves coupled with conduit grafts sealed with a bioresorbable medium can be stored with the delivery holder.