Expandable heart valve coaptation device

    公开(公告)号:US11083581B2

    公开(公告)日:2021-08-10

    申请号:US16208264

    申请日:2018-12-03

    Abstract: In one embodiment, an expandable positioning device for improving the coaptation of heart valve leaflets is provided. The expandable positioning device can include one or more expandable members. A first expandable member extends below a leaflet in order to reposition the leaflet to improve coaptation with another leaflet. A second expandable member extends above a leaflet in order to secure the expandable delivery device at the implantation site. The expandable positioning device can include a neck that is inserted through the leaflet on which the device is implanted. The expandable positioning device can include a coupling member to releasably couple the device to a delivery device. One or more sealing members can be included in the expandable positioning device to maintain a desired level of expansion of the one or more expandable members.

    CORONARY ARTERY CHECK VALVE
    56.
    发明申请

    公开(公告)号:US20190290434A1

    公开(公告)日:2019-09-26

    申请号:US16293306

    申请日:2019-03-05

    Abstract: A coronary artery check valve includes a stent configured to attach to an inner wall of a coronary artery of a living subject, and a tapered helical coil coupled to the stent and configured to regulate blood flow in the coronary artery. The coronary artery check valve is configured to prevent retrograde flow of the coronary blood supply during diastole by closing during systole of the heart when the tapered helical coil compresses longitudinally, and opening when the tapered helical coil expands longitudinally to permit blood flow into the coronary artery when a coronary pressure of the living subject drops below diastolic blood pressure.

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