Devices, systems and methods for assisting blood flow
    1.
    发明授权
    Devices, systems and methods for assisting blood flow 失效
    用于辅助血液流动的装置,系统和方法

    公开(公告)号:US07588530B2

    公开(公告)日:2009-09-15

    申请号:US11184231

    申请日:2005-07-19

    IPC分类号: A61M1/10

    摘要: A pump includes a flexible conduit, at least one valve attached to the flexible conduit about the perimeter of the valve; and a drive mechanism to move the valve to pump blood within the conduit. The drive mechanism can, for example, be adapted to complete a single stroke during each heart ventricle contraction and/or to complete multiple strokes (that is, oscillate) during a single contraction. The moveable valve includes a plurality of openings. Each of the plurality of openings has a closure mechanism in operative connection therewith which is operable to at least partially close the opening to which it is operatively connected when the moveable valve is moved forward and to open the opening to which it is operatively connected when the valve is moved rearward. In one embodiment, each closure mechanism includes a flap of resilient material.

    摘要翻译: 泵包括柔性导管,至少一个阀,围绕阀的周边连接到柔性导管; 以及驱动机构,用于移动阀以泵送导管内的血液。 例如,驱动机构可以适于在每次心室收缩期间完成单个冲程和/或在单次收缩期间完成多个冲程(即,振荡)。 可移动阀包括多个开口。 多个开口中的每一个具有与其可操作地连接的闭合机构,其可操作以在可移动阀向前移动时至少部分地关闭其可操作地连接的开口,并且当可移动阀向前移动时打开其可操作地连接的开口 阀向后移动。 在一个实施例中,每个闭合机构包括弹性材料的翼片。

    Single chamber blood pump
    4.
    发明授权
    Single chamber blood pump 失效
    单室血液泵

    公开(公告)号:US6066085A

    公开(公告)日:2000-05-23

    申请号:US359563

    申请日:1999-07-22

    摘要: A blood pump apparatus can include a pump housing having a drive chamber containing a drive mechanism. A cupped member can be connected to the housing and the drive mechanism can include a motor for rotating an eccentric shaft. A pumping arm can be provided having one end riding on the eccentric shaft, an intermediate portion pivotably attached to the housing and another end connected to a movable plate. A roller bearing can be mounted on the eccentric shaft on which the arm can ride. A compressible blood chamber having an inlet and an outlet connected can be provided sandwiched between the cupped portion and the movable plate. The motor thus rotates the cam causing the pumping arm to pivot which cycles the movable plate against the blood chamber to pump blood. The movable plate can be implanted adjacent a lung such that the lung moves with the plate as blood is pumped and thereby functions as a compliance chamber. A speed reducer can be provided between the motor and the eccentric shaft. A hermetically sealing bellows can be provided to seal the drive chamber and the end of the pumping arm from body fluids. An enclosure bag can be provided surrounding all or a portion of the blood pump to provide a tissue friendly surface and to prevent tissue from becoming caught in the moving parts of the blood pump. A position sensor can be included for determining a volume of blood in the chamber for use by an electronic controller to control the speed of the motor to optimize pumping action.

    摘要翻译: 血泵装置可以包括具有包含驱动机构的驱动室的泵壳体。 杯形构件可以连接到壳体,并且驱动机构可以包括用于旋转偏心轴的马达。 可以设置一个泵臂,其一端位于偏心轴上,中间部分可枢转地附接到壳体,另一端连接到可移动板。 滚子轴承可以安装在手臂可以骑行的偏心轴上。 具有入口和出口连接的可压缩血液室可以被夹在杯状部分和活动板之间。 因此,电动机使凸轮旋转,使得泵臂枢转,循环可移动板抵靠血液室以泵送血液。 可移动板可以在肺附近植入,使得当血液被泵送时肺随着板移动,从而起到顺应性室的作用。 电动机与偏心轴之间可设有减速器。 可以提供气密密封的波纹管以将驱动室和泵臂的端部与体液密封。 可以围绕血液泵的全部或一部分设置封闭袋,以提供组织友好的表面并防止组织被卡在血液泵的运动部分中。 可以包括位置传感器,用于确定腔室中的血液体积,供电子控制器使用,以控制电机的速度以优化泵送动作。

    Method and apparatus for attaching a conduit to the heart or a blood vessel
    5.
    发明授权
    Method and apparatus for attaching a conduit to the heart or a blood vessel 失效
    用于将导管附接到心脏或血管的方法和装置

    公开(公告)号:US06942672B2

    公开(公告)日:2005-09-13

    申请号:US10047507

    申请日:2001-10-23

    摘要: An apparatus and method for safely attaching a conduit to the heart, such as a conduit for connection to an implantable blood pump, or to a blood vessel, as in a heart bypass graft, without the need for a cardiopulmonary bypass. The apparatus can include an enclosure attachable to the heart and having sealed within the enclosure at least part of a coring tool and one end of the conduit which will be attached to the heart. A heart attachment member can be affixed to the enclosure for facilitating attachment of the apparatus to the heart and the coring tool can have a cutting member and a member for holding the tissue to be cut from the heart. All air can be evacuated from the enclosure prior to cutting tissue from the heart and attachment of the conduit.

    摘要翻译: 一种用于将导管安全地附接到心脏的装置和方法,例如用于连接到可植入血液泵的导管,或者如心脏旁路移植物中的血管,而不需要体外循环。 该装置可以包括可附接到心脏并且在外壳内密封的外壳中的至少一部分取芯工具和将附接到心脏的导管的一端。 心脏附接构件可以固定到外壳上,以便于将装置附接到心脏,并且取芯工具可以具有切割构件和用于从心脏保持要切割的组织的构件。 在从心脏切割组织并连接导管之前,所有空气都可以从外壳中排出。