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    HEART ASSIST DEVICE
    71.
    发明申请
    HEART ASSIST DEVICE 有权

    公开(公告)号：US20210236799A1

    公开(公告)日：2021-08-05

    申请号：US17168031

    申请日：2021-02-04

    申请人： VADOVATIONS, INC.

    发明人： J. Ryan Stanfield ,  Michael Vladovich

    IPC分类号： A61M60/148 ,  A61M60/122 ,  A61M60/135 ,  A61M60/205 ,  A61M60/422 ,  A61M60/824

    摘要： A heart assist device comprising a rotary pump housing having a cylindrical bore, a pumping chamber and a motor stator including an electrically conductive coil located within the housing and surrounding a portion of the cylindrical bore. A rotor has a cylindrical shaft with an impeller and one or of magnets located within the shaft that are responsive to the motor stator to drive actuation of the rotor. The housing bore is closely fitted to the outer surface of the shaft forming a hydrodynamic journal bearing with an annular clearance defining a leakage flow path. One or more of radial or axial thrust bearings may be provided to provide rotation stability to the rotor and flow within the leakage flow path. The relative orientation of positions of the inflow, outflow, and leakage flow paths may be varied within the pump, such as to accommodate different intended methods for implantation and/or use.

    Sheath system for catheter pump
    72.
    发明授权
    Sheath system for catheter pump 有权

    公开(公告)号：US11045638B2

    公开(公告)日：2021-06-29

    申请号：US15840117

    申请日：2017-12-13

    申请人： TC1 LLC

    发明人： Richard L. Keenan ,  Keif M. Fitzgerald ,  Veronica J. Neiman ,  Phyllis Yuen

    IPC分类号： A61M60/00 ,  A61M60/824 ,  A61M60/135 ,  A61M60/148 ,  A61M60/205 ,  A61M60/414 ,  A61M60/829 ,  A61M60/857 ,  A61M60/871

    摘要： A catheter pump assembly is provided that includes an elongate polymeric catheter body, a cannula, and a tubular interface. The elongate polymeric catheter body has a proximal end and a distal end. The cannula has an expandable portion disposed distally of the elongate polymeric catheter body. The cannula can also have another tubular portion that is proximal to the distal portion. The tubular interface has an outer surface configured to be joined to the tubular portion of the cannula and an inner surface. The inner surface is disposed over the distal end of the elongate polymeric catheter body. The tubular interface has a plurality of transverse channels extending outward from the inner surface of the tubular interface. An outer surface of the elongate polymeric catheter body projects into the transverse channels to mechanically integrate the elongate polymeric catheter body with the tubular interface.

    Axial Flow Blood Pump
    79.
    发明公开
    Axial Flow Blood Pump 审中-公开

    公开(公告)号：US20240189572A1

    公开(公告)日：2024-06-13

    申请号：US18390643

    申请日：2023-12-20

    申请人： TC1 LLC

    发明人： Onur Dur ,  Kevin Bourque

    IPC分类号： A61M60/419 ,  A61M60/148 ,  A61M60/178 ,  A61M60/242 ,  A61M60/422 ,  A61M60/812 ,  A61M60/82 ,  A61M60/824

    CPC分类号： A61M60/419 ,  A61M60/148 ,  A61M60/178 ,  A61M60/242 ,  A61M60/422 ,  A61M60/812 ,  A61M60/82 ,  A61M60/824 ,  A61M2205/8206 ,  A61M2209/088

    摘要： The invention generally relates to improved medical blood pump devices, systems, and methods. For example, blood pumps may be provided that include a housing defining a blood flow path between an inlet and an outlet. A rotor may be positioned in the blood flow path. A motor stator may be driven to rotate the rotor to provide the blood flow through the pump. Axial and/or tilt stabilization components may be provided to increase an axial and/or tilt stabilization of the rotor within the blood flow path. In some embodiments, biasing forces are provided that urge the rotor toward a bearing component. The biasing force may be provided by adjusting drive signals of the motor stator. Additionally, or alternatively, one or more magnets (e.g., permanent/stator magnets) may be provided to bias the rotor in the upstream and/or downstream direction (e.g., toward a bearing (chamfer, step, conical), or the like).