公开(公告)号：US4643641A

公开(公告)日：1987-02-17

申请号：US648498

申请日：1984-09-10

申请人： Earl W. Clausen ,  Lloyd C. Hubbard

发明人： Earl W. Clausen ,  Lloyd C. Hubbard

IPC分类号： A61L2/20 ,  A61M1/10 ,  F04D13/02 ,  F04D29/12 ,  F04D29/20 ,  F16J15/34

CPC分类号： A61M1/101 ,  A61L2/206 ,  A61M1/1025 ,  A61M1/1036 ,  F04D13/026 ,  F04D13/027 ,  F04D29/126 ,  F04D29/20 ,  F16J15/3416 ,  F16J15/344 ,  Y10S415/90

摘要： A centrifugal blood pump has a face seal between a pump housing wall and a hub of an impeller which provides upon assembly a gas permeable seal at a seal interface surrounding a shaft defining the rotational axis of the impeller. This seal separates a blood pumping chamber from a separate chamber housing lubricants and bearings for impeller rotation. Prior to rotation of the impeller, the blood pump is sterilized by exposure to ethylene oxide gas which passes through the gas permeable seal interface to also sterilize the interior of the bearing chamber in the pump. Upon rotation of the impeller, the seal interface, which is perpendicular to the axis, is converted to a gas and liquid impermeable seal.

摘要翻译： 离心式血泵在泵壳体壁和叶轮的轮毂之间具有面密封，其在组装时在密封界面处提供气体可渗透的密封，围绕限定叶轮的旋转轴线的轴。 该密封将血液泵送室与容纳用于叶轮旋转的润滑剂和轴承的单独的室分开。 在叶轮旋转之前，通过暴露于通过气体渗透密封界面的环氧乙烷气体对血液泵进行灭菌，以对泵中的轴承腔室的内部进行消毒。 在叶轮旋转时，垂直于轴线的密封接口被转换成气体和液体不可渗透的密封。

公开(公告)号：US4589822A

公开(公告)日：1986-05-20

申请号：US628756

申请日：1984-07-09

申请人： Earl W. Clausen ,  Lloyd C. Hubbard

发明人： Earl W. Clausen ,  Lloyd C. Hubbard

IPC分类号： A61M1/10 ,  F04D13/02 ,  F04D29/12 ,  F04D29/22 ,  F04D29/28

CPC分类号： A61M1/101 ,  A61M1/1025 ,  A61M1/1036 ,  F04D13/026 ,  F04D13/027 ,  F04D29/126 ,  F04D29/2205 ,  Y10S415/90

摘要： A centrifugal blood pump has an impeller with a hub, a blade support ring and alternating long and short blades. A tapered seal between a pump housing wall and a hub of an impeller which provides a fluid tight seal interface surrounding a shaft. The long blades of the impeller have rear edges which are closer to the wall than is the seal interface and inner edges which extend from the rear edges to the hub. This provides high flow in the vicinity of the seal interface to enhance heat dissipation from the seal interface.

摘要翻译： 离心式血液泵具有带有轮毂，叶片支撑环和交替的长和短叶片的叶轮。 在泵壳体壁和叶轮的轮毂之间的锥形密封件，其提供围绕轴的流体密封密封接口。 叶轮的长叶片具有比密封接口更靠近壁的后边缘和从后边缘延伸到轮毂的内边缘。 这在密封接口附近提供高流量，以增强从密封接口的散热。