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    Catheter tip x-ray source
    2.
    发明授权
    Catheter tip x-ray source 失效
    导管尖端X射线源

    公开(公告)号：US06661875B2

    公开(公告)日：2003-12-09

    申请号：US10142288

    申请日：2002-05-09

    Applicant: Anton C. Greenwald ,  Ward D. Halverson

    Inventor： Anton C. Greenwald ,  Ward D. Halverson

    IPC: G21G400

    CPC classification number: H05G1/10 ,  H01J35/025 ,  H01J35/18 ,  H01J35/32 ,  H01J2235/0236

    Abstract: The present invention provides a catheter having an x-ray generator unit at its tip which generates x-ray radiation having a wavelength in a range effective for treating biological tissue. In one embodiment, the x-ray generator unit includes a miniature x-ray generator and a miniature transformer that form, in combination, a monolithic device. The transformer includes a primary winding that receives an input voltage in a range of 100 V to 4 kV from a power source, via a flexible cable that runs from the proximal end of the catheter body to its distal end. The transformer further includes a secondary winding that up-converts the input voltage to generate an output voltage in a range of 10 kV to 40 kV to be applied to a cathode of the x-ray generator. The cathode emits electrons in response to the applied voltage, and an extraction electrode guides the emitted electrons to an anode, which is preferably formed of a high-Z refractory metal. The impact of the electrons with the anode effects generation of x-ray radiation, a portion of which is transmitted via an x-ray transmissive window to the outside environment. One significant advantage of the device of the invention is that by employing a lower voltage in the body of the catheter and confining a higher voltage to a short, rigid section at the distal end of the catheter, the device provides enhanced mechanical flexibility and lowers the likelihood of electrical breakdown.

    Abstract translation: 本发明提供了一种在其尖端处具有x射线发生器单元的导管，其产生具有在有效治疗生物组织的范围内的波长的x射线辐射。 在一个实施例中，x射线发生器单元包括组合形成单片器件的微型x射线发生器和微型变压器。 该变压器包括初级绕组，其通过从导管主体的近端延伸到其远端的柔性电缆从电源接收在100V至4kV的范围内的输入电压。 变压器还包括次级绕组，其对输入电压进行上变频以产生在10kV至40kV的范围内的输出电压以施加到x射线发生器的阴极。 阴极响应于施加的电压发射电子，并且提取电极将发射的电子引导到优选由高Z难熔金属形成的阳极。 具有阳极的电子的影响影响X射线辐射的产生，其一部分经由x射线透射窗口传输到外部环境。 本发明的装置的一个显着优点是通过在导管的主体中采用较低的电压并将更高的电压限制在导管远端处的短的刚性部分，该装置提供增强的机械灵活性并降低 电气故障的可能性。

    CATHETER TIP X-RAY SOURCE
    3.
    发明申请
    CATHETER TIP X-RAY SOURCE 失效
    导管提示X射线源

    公开(公告)号：US20030210765A1

    公开(公告)日：2003-11-13

    申请号：US10142288

    申请日：2002-05-09

    Applicant: Spire Corporation

    Inventor： Anton C. Greenwald ,  Ward D. Halverson

    IPC: H01J035/00

    CPC classification number: H05G1/10 ,  H01J35/025 ,  H01J35/18 ,  H01J35/32 ,  H01J2235/0236

    Abstract: The present invention provides a catheter having an x-ray generator unit at its tip which generates x-ray radiation having a wavelength in a range effective for treating biological tissue. In one embodiment, the x-ray generator unit includes a miniature x-ray generator and a miniature transformer that form, in combination, a monolithic device. The transformer includes a primary winding that receives an input voltage in a range of 100 V to 4 kV from a power source, via a flexible cable that runs from the proximal end of the catheter body to its distal end. The transformer further includes a secondary winding that up-converts the input voltage to generate an output voltage in a range of 10 kV to 40 kV to be applied to a cathode of the x-ray generator. The cathode emits electrons in response to the applied voltage, and an extraction electrode guides the emitted electrons to an anode, which is preferably formed of a high-Z refractory metal. The impact of the electrons with the anode effects generation of x-ray radiation, a portion of which is transmitted via an x-ray transmissive window to the outside environment. One significant advantage of the device of the invention is that by employing a lower voltage in the body of the catheter and confining a higher voltage to a short, rigid section at the distal end of the catheter, the device provides enhanced mechanical flexibility and lowers the likelihood of electrical breakdown.

    Abstract translation: 本发明提供了一种在其尖端处具有x射线发生器单元的导管，其产生具有在有效治疗生物组织的范围内的波长的x射线辐射。 在一个实施例中，x射线发生器单元包括组合形成单片器件的微型x射线发生器和微型变压器。 该变压器包括初级绕组，其通过从导管主体的近端延伸到其远端的柔性电缆从电源接收在100V至4kV的范围内的输入电压。 变压器还包括次级绕组，其对输入电压进行上变频以产生在10kV至40kV的范围内的输出电压以施加到x射线发生器的阴极。 阴极响应于施加的电压发射电子，并且提取电极将发射的电子引导到优选由高Z难熔金属形成的阳极。 具有阳极的电子的影响影响X射线辐射的产生，其一部分经由x射线透射窗口传输到外部环境。 本发明的装置的一个显着优点是通过在导管的主体中采用较低的电压并将更高的电压限制在导管远端处的短的刚性部分，该装置提供增强的机械灵活性并降低 电气故障的可能性。

    Rotary anode x-ray tube
    6.
    发明授权
    Rotary anode x-ray tube 失效
    旋转阳极x射线管

    公开(公告)号：US4417171A

    公开(公告)日：1983-11-22

    申请号：US311622

    申请日：1981-10-15

    Applicant: Herbert Schmitmann

    Inventor： Herbert Schmitmann

    IPC: H01J35/10 ,  H01J1/10 ,  H01J61/52

    CPC classification number: H01J35/103 ,  H01J2235/0236

    Abstract: In an exemplary embodiment, the rotary anode is mounted by magnetic bearings and is provided with an auxiliary device for conducting the anode current to the external power supply. The auxiliary device comprises at least one auxiliary cathode which rotates with the anode and an auxiliary anode which is arranged concentrically to the anode rotary axis on a stationary part. The heating of the auxiliary cathodes can proceed via generator windings which rotate with the rotary anode and associated stationary exciting windings arranged about the x-ray tube. It is also possible to provide for this purpose a rotating transformer whose primary windings externally annularly surrounds the x-ray tube and whose secondary winding is arranged on a rotating anode part.

    Abstract translation: 在示例性实施例中，旋转阳极由磁性轴承安装，并且设置有用于将阳极电流传导到外部电源的辅助装置。 辅助装置包括至少一个与阳极一起旋转的辅助阴极和在静止部分上与阳极旋转轴线同心设置的辅助阳极。 辅助阴极的加热可以通过绕旋转阳极旋转的发电机绕组和围绕x射线管布置的相关联的静止励磁绕组进行。 为此也可以提供一种旋转变压器，其初级绕组外部环绕x射线管并且其次级绕组布置在旋转的阳极部分上。

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