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    • 4. 发明申请
    • LEFT VENTRICLE ASSIST DEVICE (LVAD)
    • 左侧通气辅助装置(LVAD)
    • US20070265490A1
    • 2007-11-15
    • US11679487
    • 2007-02-27
    • Robert SmithRoger SnyderAdrian KantrowitzAllen Kantrowitz
    • Robert SmithRoger SnyderAdrian KantrowitzAllen Kantrowitz
    • A61M1/10
    • A61M1/1072A61M1/1008A61M1/1037A61M1/106A61M1/122A61M1/125
    • A blood pump for placement in an incision in an aorta is provided that after placement contacts blood passing through the aorta. The pump inflates and deflates in order to provide left ventricular assistance. The pump has an elongated shell with a generally elliptical shape, an outer convex surface and an inner concave surface. A peripheral side edge located between the inner and outer surfaces terminates in a bead edge. A passage is provided through the shell to provide fluid communication between the outer surface and inner surface. A flexible airtight membrane has a membrane edge bonded to the outer shell surface adjacent to the bead edge to form an enclosed internal chamber in fluid communication with the passage. Preforming the membrane edge looped with a maximum linear span of curvature that is greater than a maximal transverse linear extent of the bead edge, membrane operational wear during inflation and deflation cycles is reduced in the region around the bead edge. A process of forming a blood pump with a membrane preform is provided that includes placing an airtight membrane around a platen having a platen edge bead with a curvature of maximal transverse linear extent and a platen footprint substantially identical to a footprint of the blood pump shell. By heat setting the membrane, a looped membrane edge is formed as complementary to the curvature of the platen edge bead to yield a membrane preform. The membrane preform is secured to the outer surface of the shell having a bead edge of maximum linear extent less than the curvature of the looped membrane edge.
    • 提供用于放置在主动脉切口中的血泵,其在放置后接触通过主动脉的血液。 泵充气和放气以提供左心室辅助。 泵具有大致椭圆形的细长壳体,外凸面和内凹面。 位于内表面和外表面之间的周边侧边缘终止于边缘。 通过壳体提供通道以在外表面和内表面之间提供流体连通。 柔性密封膜具有与胎圈边缘相邻的外壳表面结合的膜边缘,以形成与通道流体连通的封闭内部室。 预先形成最大线性曲率跨度的膜边缘,其大于胎圈边缘的最大横向线性范围,在充气和放气周期期间的膜操作磨损在珠边缘周围的区域减小。 提供了一种形成具有膜预制件的血液泵的过程,其包括将气密膜放置在具有最大横向线性范围的曲率的台板边缘珠的压板上,和与血泵壳的占地面积基本相同的压板盖板。 通过热定形膜,形成环形膜边缘,以与压板边缘珠的曲率互补以产生膜预制件。 膜预制件被固定到外壳的外表面,其具有小于环形膜边缘的曲率的最大线性范围的边缘边缘。
    • 6. 发明授权
    • Synchronization system between aortic valve and cardiac assist device
    • 主动脉瓣与心脏辅助装置之间的同步系统
    • US07513864B2
    • 2009-04-07
    • US11178969
    • 2005-07-11
    • Allen B. KantrowitzAdrian Kantrowitz
    • Allen B. KantrowitzAdrian Kantrowitz
    • A61M1/12
    • A61M1/122A61M1/106A61M1/1067A61M1/1072A61M1/1086A61M1/12A61M1/127A61M2205/33A61M2205/3303
    • A cardiac assist device synchronization system includes a cardiac assist device and an acoustic or accelerometer sensor that provides a signal input to the cardiac assist device indicative of aortic valve closure. The cardiac assist device is coupled to a mammalian aorta and includes an inflatable chamber and a fluid pump. A fluid conduit is in communication between the chamber and the pump to provide for selective inflation of the chamber. A pump controller triggers the pump in counter-pulsation to a mammalian heart upstream from the aorta. A process for synchronizing a cardiac assist device in counter-pulsation with a left ventricle includes locating an acoustic or accelerometer sensor within a thoracic cavity of a mammal having the assist device coupled to the aorta of the mammal. Through the measurement of an acoustic or acceleration property of an aortic valve of the mammal, and the transmission of aortic valve closure measurement through a controller for the cardiac assist device, counter-pulsatile synchronization for the cardiac assist device is achieved.
    • 心脏辅助装置同步系统包括心脏辅助装置和声学或加速度计传感器,其向心脏辅助装置提供指示主动脉瓣闭合的信号输入。 心脏辅助装置耦合到哺乳动物主动脉并且包括可充气室和流体泵。 流体导管在腔室和泵之间连通以提供腔室的选择性充气。 泵控制器触发泵与主动脉上游的哺乳动物心脏反搏。 将逆向脉动中的心脏辅助装置与左心室同步的过程包括将声学或加速度计传感器定位在哺乳动物的胸腔内,该辅助装置与哺乳动物的主动脉联接。 通过测量哺乳动物的主动脉瓣的声学或加速特性,以及通过用于心脏辅助装置的控制器传播主动脉瓣闭合测量,实现了心脏辅助装置的反脉动同步。
    • 9. 发明授权
    • Culture and transport assembly for percutaneous access device
    • 用于经皮进入装置的文化和运输组件
    • US4913700A
    • 1990-04-03
    • US259991
    • 1988-10-21
    • Adrian KantrowitzPaul S. Freed
    • Adrian KantrowitzPaul S. Freed
    • A61M1/00A61M5/00
    • A61M39/0247A61M2039/0288A61M2039/0291A61M2039/0294
    • A culture and transport assembly for enclosing a percutaneous access device within a sealed outer container to maintain the device under sterile conditions during transport while accommodating culturing of a coating of dermal cells on a portion of the device while the device is retained within the container. The container has a removable cap to which a culture well body is attached. The percutaneous access device is releasably clamped between the bottom of the body and an underlying platform with a portion of the device projecting into a bore in the body. When the device is so clamped, the bore constituted a sealed culture chamber in which the dermal cell culturing procedure may be performed by introducing cells and culturing solutions into the chamber via fluid passages extending from the chamber to connectors accessible at the exterior of the cap.
    • 一种培养和运输组件,其用于将经皮进入装置封闭在密封的外部容器内,以在运输过程中将装置维持在无菌条件下,同时在装置保持在容器内的同时容纳在装置的一部分上培养真皮细胞的涂层。 容器具有可移除的盖子,文化井体与其相连。 经皮进入装置可释放地夹紧在主体的底部和底部平台之间,其中该装置的一部分突出到主体中的孔中。 当装置如此夹持时,孔构成密封的培养室,其中可以通过从腔室延伸到在帽外部可接近的连接器的流体通道将细胞和培养溶液引入室中来进行真皮细胞培养程序。