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41 条记录 (耗时 0.026 秒)

    RF ablation apparatus and method using unipolar and bipolar techniques
    31.
    发明授权
    RF ablation apparatus and method using unipolar and bipolar techniques 有权
    RF消融装置和使用单极和双极技术的方法

    公开(公告)号：US06488678B2

    公开(公告)日：2002-12-03

    申请号：US09758636

    申请日：2001-01-10

    申请人： Marshall L. Sherman

    发明人： Marshall L. Sherman

    IPC分类号： A01B1818

    CPC分类号： A61B18/1206 ,  A61B18/1492 ,  A61B2018/0016 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00654 ,  A61B2018/00702 ,  A61B2018/00714 ,  A61B2018/00726 ,  A61B2018/00738 ,  A61B2018/0075 ,  A61B2018/00755 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00821 ,  A61B2018/00875 ,  A61B2018/124 ,  A61B2018/126 ,  A61B2018/1273 ,  A61B2018/1467

    摘要： An apparatus for delivering energy to a biological site includes an electrode device having a plurality of electrodes, the electrode device positioned proximal the biological site. A power control system supplies power having a controllable phase angle to each of the electrodes. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrode device and the backplate. The backplate is maintained at the reference voltage level in relation to the power. The power control system controls the phase angle of the power so that the current flow between the electrodes and between the electrodes and the backplate results in the continuity and depth of lesions desired. In a preferred embodiment, the electrodes are arranged in a substantially linear array.

    摘要翻译： 用于向生物部位输送能量的装置包括具有多个电极的电极装置，所述电极装置位于生物部位附近。 功率控制系统向每个电极提供具有可控相位角的电力。 背板也位于生物部位的近侧，使得生物部位介于电极装置和背板之间。 背板相对于电源维持在参考电压电平。 功率控制系统控制功率的相位角，使得电极之间以及电极和背板之间的电流流动导致所需的病变的连续性和深度。 在优选实施例中，电极被布置成基本上线性的阵列。

    RF ablation apparatus and method using controllable duty cycle with alternate phasing
    32.
    发明授权
    RF ablation apparatus and method using controllable duty cycle with alternate phasing 失效
    RF消融装置和方法使用可调节占空比与交替定相

    公开(公告)号：US6050994A

    公开(公告)日：2000-04-18

    申请号：US73396

    申请日：1998-05-05

    申请人： Marshall L. Sherman

    发明人： Marshall L. Sherman

    IPC分类号： A61B18/12 ,  A61B18/14 ,  A61B17/39

    CPC分类号： A61B18/1492 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00726 ,  A61B2018/00738 ,  A61B2018/00791

    摘要： An apparatus for delivering energy to a biological site includes a catheter having a plurality of electrodes, the electrodes positioned proximal the biological site. A power control system supplies power signals, each having a controllable phase angle, to each of the electrodes such that the phase between electrodes alternates. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrode device and the backplate. The backplate is maintained at one voltage level in relation to the power. The power control system controls the phase angle of the power so that the current flow between the electrodes and between the electrodes and the backplate results in the continuity and depth of lesions desired. In a preferred embodiment, the electrodes are arranged in a substantially linear array. The duty cycle of each electrode is controlled and during the off period of the duty cycle, the phase angles of adjacent electrodes are alternated to achieve a more uniform ablation volume.

    摘要翻译： 用于向生物部位输送能量的装置包括具有多个电极的导管，所述电极位于生物部位的近侧。 功率控制系统向每个电极提供各自具有可控相位角的功率信号，使得电极之间的相位交替。 背板也位于生物部位的近侧，使得生物部位介于电极装置和背板之间。 背板相对于电源维持在一个电压水平。 功率控制系统控制功率的相位角，使得电极之间以及电极和背板之间的电流流动导致所需的损伤的连续性和深度。 在优选实施例中，电极被布置成基本上线性的阵列。 每个电极的占空比被控制，并且在占空比的关闭期间，相邻电极的相位角交替以实现更均匀的消融体积。

    Ultrasound energy delivery system and method
    33.
    发明授权
    Ultrasound energy delivery system and method 失效
    超声能量输送系统及方法

    公开(公告)号：US5735280A

    公开(公告)日：1998-04-07

    申请号：US708829

    申请日：1996-09-09

    申请人： Marshall L. Sherman ,  Thomas M. Castellano

    发明人： Marshall L. Sherman ,  Thomas M. Castellano

    IPC分类号： A61B18/00 ,  A61B17/00 ,  A61B17/22 ,  A61B8/00

    CPC分类号： A61B17/2202 ,  A61B2017/00084 ,  A61B2017/00092 ,  A61B2017/00243

    摘要： An energy delivery system and method controls the frequency of the power driving an ultrasonic device to achieve more efficient power delivery. During operation of the ultrasonic device to deliver power to a patient site, the system and method automatically sweeps the drive power through a frequency range, locates the series and parallel resonance frequencies, calculates the average of those frequencies and locks the power generator at that average frequency to drive the crystal. This frequency sweep procedure occurs automatically when the ultrasonic crystal is located at the patient site and the power generator operator presses the power-on switch to apply power. The method of tuning the power generator thus occurs when the crystal is at the site temperature and is transparent to the operator. The application of an external bio-layer to the crystal increases its bandwidth and its robustness. Mounting a temperature sensor or sensors at the crystal permits monitoring of the crystal temperature and allows drive level control over the power generator to control the temperature at the crystal.

    摘要翻译： 能量输送系统和方法控制驱动超声波装置的功率的频率以实现更有效的功率传递。 在超声波设备运行期间向病人现场输送电力时，系统和方法会自动扫描驱动电源频率范围，定位串联和并联谐振频率，计算出这些频率的平均值，并将发电机锁定在该平均值 频率驱动晶体。 当超声波晶体位于患者现场时，该频率扫描过程自动发生，发电机操作者按下电源开关以施加电力。 因此，当晶体处于现场温度并且对操作者是透明的时，调谐发电机的方法发生。 外部生物层在晶体上的应用增加了其带宽和其鲁棒性。 将温度传感器或传感器安装在晶体处可以监控晶体温度，并允许对发电机进行驱动电平控制，以控制晶体的温度。

    Integrated circuit hydrated sensor apparatus
    34.
    发明授权
    Integrated circuit hydrated sensor apparatus 失效
    集成电路水合传感器装置

    公开(公告)号：US5338435A

    公开(公告)日：1994-08-16

    申请号：US905255

    申请日：1992-06-26

    申请人： Ronald E. Betts ,  Douglas R. Savage ,  Richard J. Koerner ,  Matthew J. Leader ,  Kee V. Sin ,  Jeffrey A. Graves ,  Marshall L. Sherman

    发明人： Ronald E. Betts ,  Douglas R. Savage ,  Richard J. Koerner ,  Matthew J. Leader ,  Kee V. Sin ,  Jeffrey A. Graves ,  Marshall L. Sherman

    IPC分类号： G01N27/26 ,  A61B5/00 ,  A61B5/15 ,  B01L3/00 ,  G01N1/00 ,  G01N27/27 ,  G01N27/28 ,  G01N33/487 ,  G01N33/49

    CPC分类号： G01N33/4925 ,  A61B5/14539 ,  A61B5/14542 ,  A61B5/1468 ,  A61B5/1473 ,  A61B5/15003 ,  A61B5/150251 ,  A61B5/150305 ,  A61B5/150786 ,  A61B5/153 ,  A61B5/157 ,  A61B2562/08 ,  B01L3/502

    摘要： A plastic covered nonconducting substrate with an electrical circuit means is secured to the extent to withstand the presence of liquids in contact with the substrate. The covered substrate can have the substrate with one or more fluid preconditionable electrical components, a housing secured to the substrate to maintain contact of the preconditioning fluid with the electrical component like a sensor, and moisture impervious seals to cover openings in the housing for the disposition of the preconditioning fluid in the housing for contact with the electrical component on the substrate. The housing can have one or more parts and have one or more channels for containing the preconditioning fluid.The electrical component can be an improved electronic wiring board having a thermistor and at least one blood gas sensor supported, in close relation, one to the other, on one side of the board and a heater supported on the other side of the board to provide heat in response to temperature sensed by the thermistor, to at least the region where the thermistor and the blood gas sensor are positioned on the board to control the temperature of the region of the board within a narrow distribution of temperatures.

    摘要翻译： 具有电路装置的塑料覆盖的非导电基板被固定到能够承受与基板接触的液体的存在的程度。 被覆盖的基板可以具有一个或多个流体预调节电气部件的基板，固定到基板的壳体，以保持预处理流体与电气部件如传感器的接触，以及防潮密封件，以覆盖外壳中的开口用于处置 的壳体中的预处理流体与衬底上的电气部件接触。 壳体可以具有一个或多个部件并且具有用于容纳预处理流体的一个或多个通道。 电气部件可以是具有热敏电阻和至少一个血液传感器的改进的电子布线板，所述至少一个血液传感器在板的一侧彼此相对地相互支撑，并且加热器支撑在板的另一侧上以提供 至少热敏电阻和血液气体传感器位于板上的区域，以控制板的区域在较窄的温​​度分布范围内的温度。

    Ablation system and method having multiple-sensor electrodes to assist in assessment of electrode and sensor position and adjustment of energy levels
    38.
    发明授权
    Ablation system and method having multiple-sensor electrodes to assist in assessment of electrode and sensor position and adjustment of energy levels 有权
    消融系统和方法具有多个传感器电极，以帮助评估电极和传感器位置以及调节能级

    公开(公告)号：US06752804B2

    公开(公告)日：2004-06-22

    申请号：US09752782

    申请日：2000-12-28

    申请人： John A. Simpson ,  Marshall L. Sherman ,  David S. Wood ,  Jeffrey A. Hall

    发明人： John A. Simpson ,  Marshall L. Sherman ,  David S. Wood ,  Jeffrey A. Hall

    IPC分类号： A61B1804

    CPC分类号： A61B18/1492 ,  A61B2017/00101 ,  A61B2018/0016 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00797

    摘要： A catheter carries a plurality of electrodes, each with multiple thermal sensors attached and is used to position the electrodes proximal biological tissue. A processor responsive to each of the thermal sensors determines the temperature at the thermal-sensor/electrode junction. A display provides a graphic representation of the temperatures of the thermal-sensor/electrode junctions. An exemplary representation is a bar graph having the temperature of one thermal sensor at one end and the temperature of another thermal sensor at the other end. The length of the bar graph combined with the position of the bar graph relative to a temperature range region provides an indication of the position of the thermal-sensor/electrode junctions relative to the biological tissue. The processor also monitors the spread between the sensor temperatures and compares it to a threshold value. Base on the result of the comparison, the processor controls the power applied to the electrode.

    摘要翻译： 导管携带多个电极，每个具有多个热传感器，并且用于将电极定位在生物组织的近端。 响应于每个热传感器的处理器确定热传感器/电极结处的温度。 显示器提供热传感器/电极接头的温度的图示。 示例性表示是具有一端的一个热传感器的温度和另一端的另一个热传感器的温度的条形图。 条形图的长度与条形图相对于温度范围区域的位置相结合提供热传感器/电极接头相对于生物组织的位置的指示。 处理器还监控传感器温度之间的差异，并将其与阈值进行比较。 基于比较的结果，处理器控制施加到电极的电力。

    RF ablation apparatus and method having high output impedance drivers
    39.
    发明授权
    RF ablation apparatus and method having high output impedance drivers 失效
    RF消融装置和方法具有高输出阻抗驱动器

    公开(公告)号：US06171305B2

    公开(公告)日：2001-01-09

    申请号：US09073112

    申请日：1998-05-05

    申请人： Marshall L. Sherman

    发明人： Marshall L. Sherman

    IPC分类号： A61B1804

    CPC分类号： A61B18/1492 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00654 ,  A61B2018/00726 ,  A61B2018/00738 ,  A61B2018/0075 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/124 ,  A61B2018/1467

    摘要： An apparatus for delivering energy to a biological site includes a catheter having a plurality of electrodes positioned proximal the biological site. A power control system supplies power to each electrode. Where an electrode or group of electrodes is turned off, the power control system provides a high impedance to the turned off electrodes so that substantially no current flows to those electrodes from other electrodes that may remain on. This permits the electrodes turned off to cool. The power control system may permit control over the phase and duty cycle of the power applied to the electrodes and may permit individual control over the power provided to each electrode. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrodes and the backplate. Where a unipolar/bipolar approach is used with the backplate, the power control system controls the phase angle of the power applied to the electrodes so that the current flows between the electrodes and between the electrodes and the backplate.

    摘要翻译： 用于向生物部位输送能量的装置包括具有位于生物部位附近的多个电极的导管。 电源控制系统为每个电极供电。 在电极或电极组关闭的情况下，功率控制系统向关闭电极提供高阻抗，使得基本上没有电流从可能保持在其上的其它电极流到这些电极。 这允许电极关闭冷却。 功率控制系统可以允许控制施加到电极的功率的相位和占空比，并且可以允许单独控制提供给每个电极的功率。 背板也位于生物部位的近侧，使得生物部位介于电极和背板之间。 在与背板一起使用单极/双极方法的情况下，功率控制系统控制施加到电极的功率的相位角，使得电流在电极之间以及电极和背板之间流动。

    Catheter having common lead for electrode and sensor
    40.
    发明授权
    Catheter having common lead for electrode and sensor 失效
    导管具有电极和传感器的共同引线

    公开(公告)号：US6049737A

    公开(公告)日：2000-04-11

    申请号：US72800

    申请日：1998-05-05

    申请人： John A. Simpson ,  Marshall L. Sherman

    发明人： John A. Simpson ,  Marshall L. Sherman

    IPC分类号： A61N1/04 ,  A61B18/12 ,  A61B18/14 ,  A61B5/00

    CPC分类号： A61B18/1492

    摘要： An apparatus for delivering energy to a biological site includes a catheter having a plurality of electrodes arranged in a linear array, the electrodes positioned proximal the biological site. A power control system supplies power, each having a controllable duty cycle and phase angle, to each of the electrodes. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrode device and the backplate. The backplate is maintained at the reference voltage level in relation to the power. The power control system controls the phase angle of each power signal so that current flows between the electrodes and between the electrodes and the backplate results. Temperature sensors are located at the electrodes and each shares a common lead with the power circuitry. The temperature sensor signal is received by the power control system during the off-period of the duty cycle of the particular electrode.

    摘要翻译： 用于向生物部位输送能量的装置包括具有以线性阵列排列的多个电极的导管，电极位于生物部位的近侧。 功率控制系统向每个电极供电，每个功率具有可控的占空比和相位角。 背板也位于生物部位的近侧，使得生物部位介于电极装置和背板之间。 背板相对于电源维持在参考电压电平。 功率控制系统控制每个功率信号的相位角，使得电流在电极之间以及电极之间流动并产生背板结果。 温度传感器位于电极处，并且每个共享引线与电源电路。 在特定电极的占空比的关闭周期期间，功率控制系统接收温度传感器信号。