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    3.
    发明专利
    未知

    公开(公告)号：AT308113T

    公开(公告)日：2005-11-15

    申请号：AT98935825

    申请日：1998-07-20

    Applicant: MEDTRONIC AVE INC

    Inventor： CHORNENKY VICTOR I ,  FORMAN MICHAEL R ,  SCHREINER DALE L

    IPC: H01J35/06 ,  A61N5/10 ,  H01J35/20 ,  H01J35/32

    Abstract: Generally, the present invention provides a device for insertion into a body and delivery of x-ray radiation, and a method for fabricating such a device. The device includes a connector, the vacuum housing, an anode and a cathode having a granular surface and being composed of a material that allows it to act as a getter. The cathode may also contain diamond material in one embodiment.

    MINIATURE X-RAY DEVICE AND METHOD OF ITS MANUFACTURE
    5.
    发明申请
    MINIATURE X-RAY DEVICE AND METHOD OF ITS MANUFACTURE 审中-公开
    微型X射线装置及其制造方法

    公开(公告)号：WO02056952A3

    公开(公告)日：2003-10-02

    申请号：PCT/US0150586

    申请日：2001-12-21

    Applicant: MEDTRONIC AVE INC

    Inventor： CHORNENKY VICTOR I ,  PARK ENUSUNG ,  KERSLICK GRAHAM S ,  JAAFAR ALI ,  GAILLOUX MARK

    IPC: G21K5/00 ,  A61N5/10 ,  B23K1/00 ,  B23K1/19 ,  G21K5/02 ,  H01J35/32 ,  H05G1/00

    CPC classification number: A61N5/1001 ,  H01J35/32 ,  H01J2235/164

    Abstract: An emmiter for a miniature X-ray apparatus comprises an insulating shell (110), an anode (120), and a cathode (130). The insulating shell includes a conical brazing surface (112), brazed to a conical brazing surface (122) on the anode. The braze (142) consists of a pure titanium layer and a pure tin layer. During brazing, the pure metals react and bond to the insulating shell and create a titanium-tin alloy between the pure layers. Pure tin is sputtered from tin sputter target onto the exposed brazing surfaces of the cathode cap and the anode. The insulating shell is placed in a vacuum chamber of deposition applicator, which deposits an active metal onto the shell brazing surface. In a brazing oven, the anode is placed within insulating shell such that the anode conical brazing surface and the shell conical brazing surface are contacting and aligned with each other. During brazing, the cathode is brought into contact with the insulating shell. The sealed emitters are placed in a sputtering machine's vacuum chamber. A metal is sputtered from a sputtering target to form a metal layer (114) on the exterior of insulating shell.

    Abstract translation: 用于微型X射线装置的发光器包括绝缘壳（110），阳极（120）和阴极（130）。 绝缘壳包括钎焊到阳极上的锥形钎焊表面（122）的锥形钎焊表面（112）。 钎焊（142）由纯钛层和纯锡层构成。 在钎焊过程中，纯金属与绝缘壳反应并结合，并在纯净层之间产生钛 - 锡合金。 将纯锡从锡溅射靶溅射到阴极帽和阳极的暴露的钎焊表面上。 将绝缘壳体放置在沉积涂敷器的真空室中，该真空室将活性金属沉积到壳体钎焊表面上。 在钎焊炉中，将阳极放置在绝缘壳内，使得阳极锥形钎焊表面和壳体锥形钎焊表面彼此接触并对准。 在钎焊过程中，阴极与绝缘壳接触。 将密封的发射器放置在溅射机的真空室中。 从溅射靶溅射金属，以在绝缘壳的外部形成金属层（114）。

    X-RAY CATHETER WITH MINIATURE EMITTER AND FOCUSING CATHODE CUP
    6.
    发明申请
    X-RAY CATHETER WITH MINIATURE EMITTER AND FOCUSING CATHODE CUP 审中-公开
    带微型发射器和聚焦阴极杯的X射线导管

    公开(公告)号：WO03006108A3

    公开(公告)日：2003-08-14

    申请号：PCT/US0221572

    申请日：2002-07-08

    Applicant: MEDTRONIC AVE INC

    Inventor： KERSLICK GRAHAM S ,  CHORNENKY VICTOR I ,  JAAFAR ALI

    IPC: A61M36/04 ,  A61N5/10 ,  H01J35/06 ,  H01J35/08 ,  H01J35/14 ,  H01J35/16 ,  H01J35/32

    CPC classification number: A61N5/1001 ,  A61N5/1002 ,  H01J35/32 ,  H01J2235/062 ,  H01J2235/164

    Abstract: A cathode for a miniature X-ray device includes an insulating shell, a cathode and an anode. The cathode includes a focusing cup formed into and end. The focusing cup can include a thin metal layer that conforms to an inner surface of the cathode. An emitting material having a low work function, such as diamond, is deposited directly onto the internal surface of the focusing cup. The anode has a flat receiving surface for collecting electrons emitted from the anode. An interior coating is applied as a circumferential belt on the interior surface of the insulating shell. The interior coating, formed of a negative secondary emission yield material, extends lengthwise in the region of the cathode to an anode gap, covering the region of the insulating shell most likely to be subject to stray electrons emitted from the cathode.

    Abstract translation: 用于微型X射线装置的阴极包括绝缘壳，阴极和阳极。 阴极包括形成并结束的聚焦杯。 聚焦杯可以包括符合阴极内表面的薄金属层。 具有低功函数的发射材料（例如金刚石）直接沉积在聚焦杯的内表面上。 阳极具有用于收集从阳极发射的电子的平坦的接收表面。 内部涂层作为周向带施加在绝缘壳体的内表面上。 由负二次发射产生材料形成的内部涂层在阴极的区域中纵向延伸到阳极间隙，覆盖最可能经受从阴极发射的杂散电子的绝缘壳体的区域。

    9.
    发明专利
    未知

    公开(公告)号：AT235741T

    公开(公告)日：2003-04-15

    申请号：AT99902287

    申请日：1999-01-19

    Applicant: MEDTRONIC AVE INC

    Inventor： CHORNENKY VICTOR I

    IPC: A61N5/10 ,  H01J35/06 ,  H01J35/16 ,  H01J35/32

    Abstract: A device suitable for insertion into a body and for delivery of x-ray radiation, comprising a connector, a diamond vacuum housing coupled to a distal portion of the connector, an anode and cathode, disposed within the vacuum housing and arranged to enable the production of x-ray radiation. Also, a device suitable for insertion into a body and for delivery of x-ray radiation including a vacuum housing coupled to a distal portion of a connector where the vacuum housing has a diameter of less than 2.5 mm. A method of fabricating a miniature x-ray emitter by constructing a structure of diamond that defines a vacuum chamber and encases a cathode and an anode.

    X-RAY CATHETER
    10.
    发明公开
    X-RAY CATHETER 失效
    X光导管

    公开(公告)号：EP0847249A4

    公开(公告)日：2004-09-29

    申请号：EP96929018

    申请日：1996-08-22

    Applicant: MEDTRONIC AVE INC

    Inventor： CHORNENKY VICTOR I ,  FORMAN MICHAEL R

    IPC: A61N5/10 ,  H01J35/32 ,  A61B6/00 ,  A61N5/00

    CPC classification number: A61N5/1001 ,  A61N5/1002 ,  A61N2005/1003 ,  H01J35/32 ,  H01J2201/304 ,  H01J2201/306

    Abstract: A catheter for emitting radiation is disclosed, comprising a catheter shaft (104), and an x-ray unit (102) attached to the distal end of the catheter shaft. The x-ray unit comprises an anode (112), and a cathode (110) coupled to an insulator (108) to define a vacuum chamber (106). The cathode is preferably a field emission cathode of graphite or graphite coated with titanium carbide, for example. The anode is preferably tungsten, and the insulator is preferably pyrolytic boron nitride. The x-ray unit is preferably coupled to a voltage source through a coaxial cable. The anode is preferably a heavy metal such as tungsten. The cathode may also be a ferroelectric material. The x-ray unit can have a diameter less than about 4mm, and a length less than about 15 mm. Methods of use of the catheter are also disclosed. The catheter of the present invention can be used to irradiate the site of an angioplasty procedure to prevent restenosis. It can also be used to treat other conditions in any vessel, lumen or cavity of the body.

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