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    • 35. 发明授权
    • Continuous centrifugation system and method for directly deriving
intermediate density material from a suspension
    • 连续离心系统和从悬浮液中直接得到中密度材料的方法
    • US5053127A
    • 1991-10-01
    • US526568
    • 1990-05-21
    • Donald W. SchoendorferClaude E. Berthe
    • Donald W. SchoendorferClaude E. Berthe
    • A61M1/26A61M1/30A61M1/36B04B5/04
    • B04B5/0442A61M1/262A61M1/265A61M1/30A61M1/302A61M1/303A61M1/3696B04B2005/0464
    • A system for continuously esparating lighter and intermediate density matter, such as plasma rich in platelets from whole blood moves blood through a diverging centrifugation gap between inner and outer walls of a rotor rotating about a central axis within an outer housing. The centrifugation action creates layered flow along an intermediate section. However by crating trailing wakes in the gap between the rotor and housing, localized remixing patterns tending to move in the opposite direction are induced in the layered matter. Platelet rich plasma may then be extracted through adjacent platelet concentrate ports on the inner wall of the rotor. An interior passageway system passes the platelet rich plasma to a platelet concentrate reservoir. Recirculation of blood in the rotor-housing gap between the output and input, and pumping action provided by the diverging centrifugation gap, aid in enhancing throughput and concentration levels. Prior to the centrifugation gap an initial narrow gap section is employed to limit backward propagation of the induced circulatory patterns.
    • 用于连续地包含较轻和中等密度物质的系统,例如富血小板从全血中移出的血液通过在外壳内围绕中心轴旋转的转子的内壁和外壁之间的发散的离心间隙移动血液。 离心作用沿着中间部分产生分层流。 然而,通过在转子和壳体之间的间隙中装配尾部的擦拭物,在分层物质中引起倾向于在相反方向移动的局部再混合模式。 然后可以通过转子内壁上的相邻血小板浓缩物端口提取富血小板血浆。 内部通道系统将富含血小板的血浆传递到血小板浓缩物储存器。 在输出和输入之间的转子 - 壳体间隙中的血液再循环以及由分散离心间隙提供的泵送作用有助于提高产量和浓度水平。 在离心间隙之前,采用初始窄间隙部分来限制诱导循环图案的反向传播。
    • 37. 发明授权
    • Blood cell washing systems and methods
    • 血细胞清洗系统及方法
    • US4919817A
    • 1990-04-24
    • US159446
    • 1988-02-18
    • Donald W. SchoendorferLee H. Williamson
    • Donald W. SchoendorferLee H. Williamson
    • B01D61/14A61M1/02A61M1/26A61M1/34A61M1/36B01D63/16
    • A61M1/34A61M1/265A61M1/3692
    • A system and method for cleaning contaminants from shed blood to enable reinfusion of a cell concentrate in the patient employs successive rotary membrane filtering stages in which Taylor vortices are generated. Shed blood led into the first rotary membrane stage is filtered to a hematocrit in the range of 50-60 with some of the waste matter being removed. The intermediate cell concentrate is passed to the second filter stage where further waste matter is initially extracted. At any intermediate region, however, a major amount of wash solution is fed into the concentrate and effectively mixed by the Taylor vortices. In the remaining length of the second filter stage waste matter is entrained in wash solution and both waste and wash solution are filtered out to provide a cell concentrate from which the great majority of contaminants have been removed.
    • 用于从流出的血液清洁污染物以使患者能够再次输注细胞浓缩物的系统和方法采用生成泰勒涡流的连续旋转膜过滤阶段。 导入第一个旋转膜阶段的血液过滤到50-60范围内的血细胞比容,其中一些废物被去除。 将中间细胞浓缩物送至第二过滤器阶段,其中最初提取进一步的废物。 然而,在任何中间区域,将主要量的洗涤溶液进料到浓缩物中并由泰勒涡流有效地混合。 在第二过滤段的剩余长度中,废物被夹带在洗涤溶液中,并且废物和洗涤溶液都被过滤出来以提供细胞浓缩物,其中大部分污染物已被除去。
    • 38. 发明授权
    • Rotor drive for medical disposables
    • 转子驱动医疗一次性用品
    • US4816151A
    • 1989-03-28
    • US079256
    • 1987-07-29
    • Donald W. SchoendorferWarren P. Williamson, IV
    • Donald W. SchoendorferWarren P. Williamson, IV
    • A61M1/34B01D17/038F16J15/34F16J15/50H02K5/128H02K49/10
    • F16J15/50A61M1/265B01D61/08B01D63/062B01D63/16F16J15/34H02K49/106A61M1/3496B01D2313/04B01D2313/12B01D2315/02H02K5/128
    • A disposable biomedical rotating filtration system for processing fluids in a closed environment includes a rotor mounted for rotation on a pivot pin, a seal between the rotor and pivot pin, an external permanent magnet drive mechanism, and a star shaped drive element mounted on the rotor for rotating the rotor in response to a magnetic field induced by the permanent magnet of the drive mechanism. The drive element on the rotor is stamped from an inexpensive non-permanent ferromagnetic sheet metal and has a configuration and position in relation to the center of said magnetic field such that said drive element receives sufficient torque for driving said rotor and sufficient seal force is applied on the rotor to provide fluid tight seal between the rotating rotor and the seal. The pivot pin is molded from a hard plastic material such as a polyamide base resin having a low coefficient of friction and good lubriciousness. The pivot pin is irradiated by gamma radiation for sterilization and modifying of the plastic material without degradation or loss of lubricious properties.
    • 用于在封闭环境中处理流体的一次性生物医学旋转过滤系统包括安装在枢轴销上的转子,转子和枢转销之间的密封件,外部永磁体驱动机构和安装在转子上的星形驱动元件 用于响应于由驱动机构的永磁体感应的磁场来旋转转子。 转子上的驱动元件由便宜的非永久性铁磁金属板冲压而成,并且具有相对于所述磁场中心的构造和位置,使得所述驱动元件接收足够的转矩来驱动所述转子并施加足够的密封力 在转子上提供旋转转子和密封件之间的流体密封。 枢轴销由诸如具有低摩擦系数和良好光滑性的聚酰胺基础树脂的硬塑料材料模制而成。 枢轴销被γ射线照射,用于塑料材料的灭菌和改性,而不降解或丧失润滑性能。