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    • 1. 发明申请
    • BLOOD PUMP SYSTEM
    • 血液泵系统
    • WO1995021638A1
    • 1995-08-17
    • PCT/US1995001724
    • 1995-02-09
    • BAXTER INTERNATIONAL INC.
    • BAXTER INTERNATIONAL INC.CHEN, HerbertNESS, Ronald, A.WOODARD, John, C.
    • A61M01/12
    • A61M1/1055A61M1/1037A61M1/1046A61M1/1096A61M1/12A61M1/122Y10S128/03
    • A pump system (110) is described which is particularly suited for use as a left ventricular assist device for internal use in humans. The pump system (110) generally includes a pump (100) having a deformable sac (111) formed in a seamless piece of flexible resilient material having: (i) a pair of opposite substantially planar walls (113, 114) and of substantially circular shape joined by an annular wall (112) of substantially semicircular cross section and (ii) inlet and outlet means (121, 123). The inlet means (121) have an asymmetric tapered section (125) positioned to direct the inlet flow toward the annular wall (112) of the sac (111) to produce a smooth circular flow within the sac (111) and minimize thrombus formation. A pair of pusher plates (134, 136) are disposed on opposite sides of the sac (111). Each of the pusher plates (134, 136) are engageable with a respective one of the planar walls (113, 114) of the sac (111) for displacing at least one of the planar walls toward the other to deform the sac. The pump system (110) also includes removable inlet and outlet conduit means (160, 161) with valve means (150, 151) for controlling inlet and outlet flow. Each of the conduit means (160, 161) include connecting means having sealing means (181, 182) for securing the inlet and outlet conduit means (160, 161) to the pump (100).
    • 描述了一种泵系统(110),其尤其适合用作人体内部使用的左心室辅助装置。 泵系统(110)通常包括具有形成在柔性弹性材料的无缝件中的可变形囊(111)的泵(100),其具有:(i)一对相对的基本上平坦的壁(113,114) 形状由大致半圆形横截面的环形壁(112)连接,以及(ii)入口和出口装置(121,123)。 入口装置(121)具有非对称锥形部分(125),其定位成将入口流引向囊(111)的环形壁(112),以在囊(111)内产生平滑的圆形流动并使血栓形成最小化。 一对推动板(134,136)设置在囊(111)的相对侧上。 推动器板(134,136)中的每一个可与囊(111)的相应的一个平面壁(113,114)接合,用于将至少一个平面壁朝着另一个移动以使囊变形。 泵系统(110)还包括可移除的入口和出口管道装置(160,161),其具有用于控制入口和出口流量的阀装置(150,151)。 每个管道装置(160,161)包括具有密封装置(181,182)的连接装置,用于将入口和出口导管装置(160,161)固定到泵(100)。