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32 条记录 (耗时 0.016 秒)

    Integrated unit for extracorporeal blood circuits
    3.
    发明授权
    Integrated unit for extracorporeal blood circuits 失效
    用于体外血液回路的综合单位

    公开(公告)号：US5039482A

    公开(公告)日：1991-08-13

    申请号：US282152

    申请日：1988-12-09

    申请人： Ivo Panzani ,  Nicola Ghelli ,  Pietro Vescovini

    发明人： Ivo Panzani ,  Nicola Ghelli ,  Pietro Vescovini

    IPC分类号： A61M1/16 ,  A61M1/36 ,  A61M5/40

    CPC分类号： A61M1/3627 ,  A61M1/3632 ,  A61M1/1698 ,  A61M2205/366 ,  A61M5/40 ,  Y10S128/03 ,  Y10S261/28

    摘要： An extracorporeal blood circuit comprises a generally cylindrically shaped blood reservoir; a generally cylindrically shaped oxygenator arranged coaxially and adjacently below said reservoir; and a generally cylindrically shaped heat exchanger attached coaxially and adjacently below said oxygenator. The reservoir encloses an upper defoamer and multiple filter element adapted to receive cardiotomy blood within the interior of said upper element and to discharge treated blood to said reservoir; and a lower defoamer and filter element adapted to receive arterial blood within the interior of said lower element and to discharge treated blood to said reservoir; and has a lower blood outlet. The oxygenator has an inlet adapted to integrally receive blood directly from the outlet of said heat exchanger and an outlet adapted to return the oxygenated blood to the patient.

    Unitary venous return reservoir with cardiotomy filter
    5.
    发明授权
    Unitary venous return reservoir with cardiotomy filter 失效
    单一静脉回流储液槽与心脏切开术过滤器

    公开(公告)号：US4737139A

    公开(公告)日：1988-04-12

    申请号：US12411

    申请日：1987-02-09

    申请人： Paul F. Zupkas ,  Francis M. Servas ,  Todor Pavlov ,  Steven G. Kelly

    发明人： Paul F. Zupkas ,  Francis M. Servas ,  Todor Pavlov ,  Steven G. Kelly

    IPC分类号： A61M1/32 ,  A61M1/36 ,  A61M37/00

    CPC分类号： A61M1/3627 ,  A61M1/325 ,  A61M1/3632 ,  Y10S128/03

    摘要： A unitary device for the treatment and collection of blood from two different sources during a surgical procedure comprises a hollow housing made of a rigid, preferably transparent, material, first and second blood inlets in the housing, a first blood treatment element inside the housing comprising a layer of porous defoaming material and a layer of non-woven depth filter material, and a second blood treatment element inside the housing comprising a layer of porous defoaming material and free of any depth filter material. The novel device also includes internal walls for providing two blood flow paths therein, one through the first inlet, the first blood treatment element, a blood collection reservoir defined within the device and a treated blood outlet in the bottom wall of the housing, and the other through the second inlet, the second blood treatment element, the blood collection reservoir and the blood outlet. The latter blood flow path bypasses at least the depth filter material layer of the first blood treatment element. In typical use in an extracorporeal flow circuit, cardiotomy blood is introduced to the first inlet, venous return blood is introduced to the second inlet and the common blood outlet is connected to an extracorporeal blood pump. As a result, passage of the relatively clean venous return blood through a depth filter material is avoided.

    摘要翻译： 用于在外科手术过程中用于处理和收集来自两种不同来源的血液的单一装置包括由刚性的，优选透明的材料制成的中空壳体，所述壳体中的第一和第二进血口，所述壳体内部的第一血液处理元件包括 一层多孔消泡材料和一层非织造深度过滤材料，以及第二血液处理元件，其内部包括多层消泡材料层并且没有任何深度过滤材料。 该新颖装置还包括用于在其中提供两个血液流动通道的内壁，一个穿过第一入口，第一血液处理元件，限定在该装置内的采血池，以及在该壳体的底壁中的经处理的血液出口， 其他通过第二入口，第二血液处理元件，采血池和血液出口。 后一血液流路至少绕过第一血液处理元件的深度过滤材料层。 在体外流路的典型用途中，将心脏切开血液引入第一入口，将静脉回流血液引入第二入口，共同血液出口连接到体外血泵。 结果，避免了相对干净的静脉血回流通过深度过滤材料。

    Integral optical fiber coupler
    6.
    发明授权
    Integral optical fiber coupler 失效
    一体式光纤耦合器

    公开(公告)号：US4729621A

    公开(公告)日：1988-03-08

    申请号：US710196

    申请日：1985-03-11

    申请人： William Edelman

    发明人： William Edelman

    IPC分类号： A61B18/20 ,  A61N5/06 ,  G02B6/42 ,  G02B6/32

    CPC分类号： G02B6/4203

    摘要： A device for transferring high energy electromagnetic radiation from a laser to an optical fiber, which comprises a cone-shaped coupler having a wide proximal end and a narrow distal end, wherein the proximal end is in the form of a convex surface which acts as a focussing lens adapted to receive radiation from a laser and to transmit said radiation into and through said optical fiber and the distal end is attached to the input end of the optical fiber to form an integral assembly therewith, said cone-shaped coupler having a taper angle .theta. defined by the equation ##EQU1## wherein N.A. is the numerical aperture of the fiber material and .mu. is the refractive index of the material of the coupler at the wavelength of the incident radiation. A process for removing an obstruction by laser surgery using said device is also disclosed.

    摘要翻译： 一种用于将高能电磁辐射从激光传输到光纤的装置，其包括具有宽近端和窄远端的锥形耦合器，其中所述近端呈凸形表面的形式，其作为 聚焦透镜，其适于接收来自激光器的辐射并且将所述辐射传输到所述光纤中并且穿过所述光纤并且所述远端附接到所述光纤的输入端以与其形成一体的组件，所述锥形耦合器具有锥角 θ，其中NA是纤维材料的数值孔径，μ是耦合器在入射辐射波长处的材料的折射率。 还公开了通过使用所述装置的激光手术去除梗阻的过程。

    Liquid interface fiberoptic coupler
    7.
    发明授权
    Liquid interface fiberoptic coupler 失效
    液体界面光纤耦合器

    公开(公告)号：US4657014A

    公开(公告)日：1987-04-14

    申请号：US710184

    申请日：1985-03-11

    申请人： William Edelman ,  Hamid R. Naghieh ,  Dennis Constantinou

    发明人： William Edelman ,  Hamid R. Naghieh ,  Dennis Constantinou

    IPC分类号： A61B18/20 ,  A61B18/24 ,  A61N5/06 ,  B23K26/08 ,  G02B6/04 ,  G02B6/26 ,  G02B6/32 ,  G02B6/36 ,  G02B6/42 ,  A61B17/36

    CPC分类号： G02B6/4296 ,  A61B18/245 ,  G02B6/262 ,  G02B6/32 ,  G02B6/4204 ,  G02B6/424

    摘要： A device for conveying high energy electromagnetic radiation from a laser source to an optical fiber which comprises a sleeve having a proximal end and a distal end and being adapted to enclose a liquid which is transparent to said radiation, the distal end of said sleeve being adapted to be attached to the input end of the optical fiber; and a focussing lens attached to the proximal end of said sleeve said liquid having a refractive index which substantially matches the refractive index of the lens and of the optical fiber. A process for removing an obstruction by laser surgery using said device is also disclosed.

    摘要翻译： 一种用于将高能电磁辐射从激光源传送到光纤的装置，该装置包括具有近端和远端的套筒，并且适于封闭对所述辐射是透明的液体，所述套筒的远端适于 要连接到光纤的输入端; 以及聚焦透镜，其附接到所述套筒的近端，所述液体具有与透镜和光纤的折射率基本一致的折射率。 还公开了通过使用所述装置的激光手术去除梗阻的过程。

    Method for dielectrically joining tubular members
    8.
    发明授权
    Method for dielectrically joining tubular members 失效
    用于介电连接管状构件的方法

    公开(公告)号：US4547641A

    公开(公告)日：1985-10-15

    申请号：US463029

    申请日：1983-02-01

    申请人： Perry A. Nebergall ,  Robert C. French

    发明人： Perry A. Nebergall ,  Robert C. French

    IPC分类号： A61B19/00 ,  A61M25/00 ,  B29C65/00 ,  B29C65/04 ,  H05B6/54

    CPC分类号： A61M25/001 ,  A61M25/1036 ,  B29C65/04 ,  B29C66/1142 ,  B29C66/342 ,  B29C66/5344 ,  A61B90/39 ,  B29L2031/7542

    摘要： A method of dielectrically joining the mated ends of tubular members is, specifically, used in the formation of a cannula for insertion into a body cavity, duct, or vessel of a patient. The cannula preferably includes a parent cannula member and an integrally joined tip. The method comprises the steps of joining the mated ends of the tubular members to form a common joint, passing a high frequency electrical current between the electrodes of a dielectric heating device and through the mated ends of the tubular members to heat and fuse them together at said joint, concentrating the heat at the joint to form an integral cannula, permitting the hot air surrounding the joint to escape in order to prevent the burning or scorching of said cannula, pressurizing the joint to facilitate the escape of the hot air and to eliminate dimensional differences in the mated ends, and forming the mated ends of the tubular members while in a heated condition to provide smooth surfaces on the cannula.

    摘要翻译： 具体地，用于形成用于插入患者的体腔，导管或容器中的插管的介电接合管状构件的配合端的方法。 插管优选地包括母套管构件和整体连接的尖端。 该方法包括以下步骤：将管状构件的配合端连接以形成公共接头，使介电加热装置的电极之间的高频电流通过管状构件的配合端，将它们加热并将其熔合在一起 所述接头将热量集中在接头处以形成整体插管，允许围绕接头的热空气逸出，以防止所述插管的燃烧或烧焦，对接头加压以便于热空气逸出并消除 在配合端的尺寸差异，以及在加热状态下形成管状构件的配合端以在套管上提供光滑表面。

    Electro-chemically machined ring and strut structure for prosthetic heart valves
    9.
    发明授权
    Electro-chemically machined ring and strut structure for prosthetic heart valves 失效
    人造心脏瓣膜的电化学加工环和支柱结构

    公开(公告)号：US4343049A

    公开(公告)日：1982-08-10

    申请号：US211760

    申请日：1980-12-01

    申请人： Bruce E. Fettel ,  Paul E. Morris ,  Leo J. Lichte

    发明人： Bruce E. Fettel ,  Paul E. Morris ,  Leo J. Lichte

    IPC分类号： A61F2/24 ,  B23H9/00 ,  A61F1/22

    CPC分类号： B23H9/00 ,  A61F2/2406

    摘要： This invention relates to the electrochemical machining of integrally formed prosthetic heart valve structures in which both the structural integrity of the valve and the blood flow through the valve is improved as a result of the integral formation of the valve structure. In particular, such heart valves comprise a ring and a pendant structure, such as a strut, for supporting the opening and closing of a discoid valve occluder. Integral formation of the strut with the ring permits the cross-sectional shape of the strut to be machined without overheating and distortion to conform to a teardrop shape having favorable fluid-dynamic characteristics thereby improving the flow of blood through the valve across the strut. The integral formation of the strut with the ring further results in the elimination of the weld fillet between the strut and the ring, thereby permitting the height of the ring to be reduced, which further improves the fluid dynamic characteristics of the valve. The overall structural integrity of the heart valve structure is also improved by the shape of the strut which permits the increase in the total cross-sectional area of the strut while retaining the favorable fluid flow characteristics of the valve. Thus, this invention provides for improved structural integrity of the valve and at the same time, improved flow characteristics through the valve.

    摘要翻译： 本发明涉及整体形成的假体心脏瓣膜结构的电化学加工，其中由于阀结构的整体形成，瓣膜的结构完整性和通过瓣膜的血液流动都得到改善。 特别地，这种心脏瓣膜包括环和悬挂结构，例如支柱，用于支撑盘状瓣膜闭塞器的打开和关闭。 支柱与环的整体形成允许加工支柱的横截面形状而不会过热和变形，以符合具有有利的流体动力特性的泪滴形状，从而改善穿过支柱的阀通过阀的流动。 支柱与环的整体形成进一步导致消除支柱和环之间的焊缝，从而允许减小环的高度，这进一步改善了阀的流体动力特性。 通过支柱的形状也可以改善心脏瓣膜结构的整体结构完整性，这样可以在保持阀的有利的流体流动特性的同时增加支柱的总横截面面积。 因此，本发明提供了改进的阀的结构完整性，同时提高了通过阀的流动特性。