Endolumenal prothesis and method of use in bifurcation regions of body lumens

    公开(公告)号:US07018400B2

    公开(公告)日:2006-03-28

    申请号:US10369352

    申请日:2003-02-17

    IPC分类号: A61F2/06

    摘要: An endolumenal medical device assembly is provided for use in a bifurcation region of a body lumen. An expandable prosthesis, preferably an endolumenal support device such as a stent, is included in the assembly and is adjustable from a radially collapsed condition to a radially expanded condition. The expandable prosthesis further includes a prosthesis passageway and a side port through which the prosthesis passageway communicates externally of the prosthesis. A dilator or an access device is engaged within the prosthesis passageway and also through the side port while the expandable prosthesis is in the radially collapsed condition. By coupling a guidewire to an access device engaged within the side port and positioning the guidewire therein, the expandable prosthesis may be positioned in the bifurcation region such that its distal end portion is in a first branch lumen extending from the bifurcation, its proximal end portion is in a common proximal lumen of the bifurcation region, and the side port is aligned with an entrance zone to a second branch lumen extending from the bifurcation. When the expandable prosthesis is positioned at the bifurcation region in this orientation, the access device maintains percutaneous translumenal access to the second branch lumen through the prosthesis passageway and the side port while the expandable prosthesis is adjusted from the radially collapsed condition to the radially expanded condition. In addition, a dilator when engaged within the side port is adapted to expand the bore formed by the side port from an initial inner diameter to a larger expanded inner diameter. A second, lateral expandable prosthesis can also be coupled to the first expandable prosthesis at a location adjacent to the side port such that the dilator or access device extending through the side port is engaged within a lateral prosthesis lumen, extending through the lateral expandable prosthesis.

    Voltage limiter for flyback generator of television sweep system
    2.
    发明授权
    Voltage limiter for flyback generator of television sweep system 失效
    电视扫描系统反激发生器的电压限制器

    公开(公告)号:US4277730A

    公开(公告)日:1981-07-07

    申请号:US60344

    申请日:1979-07-25

    申请人: Antonio Colombo

    发明人: Antonio Colombo

    CPC分类号: H03K4/085 H03K4/696

    摘要: A flyback generator for a television receiver, in a sweep system driving the vertical-deflection yoke of a cathode-ray tube, comprises a storage capacitor with a low-voltage side grounded through a charging transistor and a high-voltage side connected through an isolating diode to the live terminal of a d-c supply. The charging transistor conducts during scanning but is cut off during flyback by the operation of a first switching transistor while a second switching transistor connects the low-voltage side of the charged storage capacitor to the live supply terminal whereby its high-voltage side is carried to a voltage V.sub.f equaling twice the supply voltage V.sub.s, less any voltage drop across the charging transistor. This high-voltage side is connected to the yoke through an output stage of a power amplifier saturated during flyback. The coupling between the first switching transistor and the charging transistor comprises a voltage-regulating network including a Zener diode connected across the supply; when the supply voltage V.sub.s rises above a threshold V.sub.t established by the Zener diode, a branch current mirroring the Zener current reduces the conductivity of the charging transistor to generate during scanning a voltage V.sub.s =2(V.sub.s -V.sub.t) thereacross which results in a partial discharge of the storage capacitor; thus, the maximum V.sub.F of the flyback voltage V.sub.f, occurring upon switchover, is twice the threshold voltage V.sub.t.

    摘要翻译: 用于电视接收机的反激式发生器,在驱动阴极射线管的垂直偏转线圈的扫描系统中,包括通过充电晶体管接地的低压侧的存储电容器和通过隔离的高压侧连接的高压侧 二极管连接到直流电源的直流端子。 充电晶体管在扫描期间导通,但是在回扫期间通过第一开关晶体管的操作而被切断,而第二开关晶体管将充电的存储电容器的低压侧连接到电源端子,由此将高压侧传送到 电压Vf等于电源电压Vs的两倍,减少了充电晶体管两端的任何电压降。 该高压侧通过在反激期间饱和的功率放大器的输出级连接到磁轭。 第一开关晶体管和充电晶体管之间的耦合包括一个电压调节网络,包括连接在电源上的齐纳二极管; 当电源电压Vs升高到由齐纳二极管建立的阈值Vt以上时,镜像齐纳电流的分支电流降低了充电晶体管的电导率,以在扫描期间产生电压Vs = 2(Vs-Vt),导致部分 放电电容器; 因此,在切换时发生的回扫电压Vf的最大VF是阈值电压Vt的两倍。

    Circuit arrangement for suppressing CRT beam in television receiver
    3.
    发明授权
    Circuit arrangement for suppressing CRT beam in television receiver 失效
    用于抑制电视接收机中的CRT光束的电路装置

    公开(公告)号:US4260935A

    公开(公告)日:1981-04-07

    申请号:US73088

    申请日:1979-09-06

    申请人: Antonio Colombo

    发明人: Antonio Colombo

    IPC分类号: H04N3/20 H04N3/24 H01J29/52

    CPC分类号: H04N3/20

    摘要: For the periodic suppression of the beam of a cathode-ray tube in a television receiver during flyback, in response to a blanking pulse V.sub.2 normally accompanied by a flyback pulse V.sub.1 of shorter duration, a control transistor T.sub.11 is saturated to render conductive a master transistor T.sub.7 in series therewith, together with several slave transistors T.sub.6, T.sub.8 and T.sub.13 forming current mirrors with transistor T.sub.7. Slave transistor T.sub.13 lies in series with a Zener diode DZ across which the beam-suppressing signal V.sub.3 is generated; slave transistor T.sub.6 activates a comparator CMP having an input A connected to a biasing circuit PL1 including slave transistor T.sub.8. Another input B of the comparator receives from a voltage divider PL2 a biasing voltage of such magnitude that an output C of the comparator feeds back a holding signal to another control transistor T.sub.12, in parallel with transistor T.sub.11, to maintain the conduction of master transistor T.sub.7 until a flyback pulse V.sub.1 applied to biasing circuit PL1 reverses the comparator whereby the beam-suppressing signal V.sub.3 disappears with the blanking pulse V.sub.2. In the absence of flyback pulse V.sub.1, signal V.sub.3 persists for an indefinite period.

    摘要翻译: 为了在回扫期间对电视接收机中的阴极射线管的光束进行周期性抑制,响应于通常伴随较短持续时间的回扫脉冲V1的消隐脉冲V2,控制晶体管T11饱和以使主晶体管导通 T7与多个从晶体管T6,T8和T13一起形成具有晶体管T7的电流镜。 从晶体管T13与齐纳二极管DZ串联,产生光束抑制信号V3; 从晶体管T6激活具有连接到包括从晶体管T8的偏置电路PL1的输入A的比较器CMP。 比较器的另一个输入端B从分压器PL2接收这样大幅度的偏置电压,使得比较器的输出C与晶体管T11并联地将保持信号反馈到另一个控制晶体管T12,以保持主晶体管T7的导通 直到施加到偏置电路PL1的反激脉冲V1反转比较器,由此消隐脉冲V2消失光束抑制信号V3。 在没有反激脉冲V1的情况下,信号V3持续无限期。

    Endolumenal prosthesis and method of use in bifurcation regions of body lumens
    4.
    发明授权
    Endolumenal prosthesis and method of use in bifurcation regions of body lumens 失效
    腔内假体及其在体腔分叉区域的使用方法

    公开(公告)号:US06520988B1

    公开(公告)日:2003-02-18

    申请号:US08937130

    申请日:1997-09-24

    IPC分类号: A61F206

    摘要: An endolumenal medical device assembly is provided for use in a bifurcation region of a body lumen. An expandable prosthesis, such as a stent, is included in the assembly and is adjustable from a radially collapsed condition to a radially expanded condition. The expandable prosthesis includes a prosthesis passageway and a side port. A dilator or an access device is engaged within the prosthesis passageway and also through the side port while the expandable prosthesis is in the radially collapsed condition. The expandable prosthesis may be positioned in the bifurcation region such that its distal end portion is in a first branch lumen extending from the bifurcation, its proximal end portion is in a common proximal lumen of the bifurcation region, and the side port is aligned with an entrance zone to a second branch lumen extending from the bifurcation. When the expandable prosthesis is so positioned the access device maintains percutaneous translumenal access to the second branch lumen through the prosthesis passageway and the side port while the expandable prosthesis is adjusted from the radially collapsed condition to the radially expanded condition. A dilator may also to expand the bore formed by the side port from an initial inner diameter to a larger expanded inner diameter. A second, lateral expandable prosthesis can also be coupled to the first expandable prosthesis at a location adjacent to the side port and engaged by the dilator or access device extending through the side port.

    摘要翻译: 提供了一种用于体腔分叉区域的腔内医疗装置组件。 可扩张假体,例如支架,被包括在组件中,并且可以从径向塌陷状态调节到径向扩张状态。 可扩张假体包括假体通道和侧端口。 扩张器或进入装置接合在假体通道内并且还可以通过侧端口,而可扩张假体处于径向折叠状态。 可扩张假体可以位于分叉区域中,使得其远端部分处于从分叉延伸的第一分支腔中,其近端部分位于分叉区域的共同的近侧内腔中,并且侧端口与 入口区到从分叉延伸的第二分支腔。 当可扩张假体如此定位时,进入装置通过假体通道和侧端口保持对第二分支腔的经皮腔内通路,同时将可扩张假体从径向折叠状态调节到径向扩张状态。 扩张器还可以将由侧口形成的孔从初始内径扩大到较大的扩大内径。 第二横向可膨胀假体还可以在与侧端口相邻的位置处联接到第一可扩张假体,并且通过延伸穿过侧端口的扩张器或进入装置接合。

    Creasing machine
    5.
    发明授权
    Creasing machine 失效
    压痕机

    公开(公告)号:US4406648A

    公开(公告)日:1983-09-27

    申请号:US300293

    申请日:1981-09-08

    摘要: Improved creasing machine, particularly for use in industry of cardboard articles and packages, comprising a sliding creasing roller and a fixed or stationary counter-roller, wherein the creasing roller is driven by the pistons of pneumatic, hydraulic or fluid-dynamic cylinders having the same axis of translation but different stroke.

    摘要翻译: 改进的压痕机,特别是用于纸板制品和包装的工业中,包括滑动压痕辊和固定或固定的反向辊,其中压痕辊由具有相同辊的气动,液压或流体动力气缸的活塞驱动 翻译轴,但不同笔画。