公开(公告)号：US08680799B2

公开(公告)日：2014-03-25

申请号：US13108725

申请日：2011-05-16

申请人： John K. Rote ,  Seil Oh ,  Brian L. Schmidt

发明人： John K. Rote ,  Seil Oh ,  Brian L. Schmidt

IPC分类号： H02P6/18

CPC分类号： H02P6/182 ,  H02P6/157

摘要： To achieve peak acoustic and power performance, the coil or applied current should be in phase or substantially aligned with the back electromotive force (back-EMF) voltage. However, there are generally phase differences between the applied current and back-EMF voltage that are induced by the impedance of the brushless DC motor (which can vary based on conditions, such as temperature and motor speed). Traditionally, compensation for these phase differences was provided manually and on an as-needed basis. Here, however, a system and method are provided that automatically perform a commutation advance by incrementally adjusting a drive signal over successive commutation cycles when the applied current and back-EMF voltage are misaligned.

摘要翻译： 为了实现峰值声功率性能，线圈或施加电流应与反电动势（反电动势）电压同相或基本对齐。 然而，由无刷直流电动机的阻抗引起的施加的电流和反电动势电压之间通常存在相位差（其可以基于诸如温度和电动机速度的条件而变化）。 传统上，这些阶段差异的补偿手工提供，并根据需要提供。 然而，这里提供了一种系统和方法，当所施加的电流和反电动势电压不对准时，通过在连续换向循环上逐渐调节驱动信号来自动执行换向提前。

公开(公告)号：US20120293098A1

公开(公告)日：2012-11-22

申请号：US13108725

申请日：2011-05-16

申请人： John K. Rote ,  Seil Oh ,  Brian L. Schmidt

发明人： John K. Rote ,  Seil Oh ,  Brian L. Schmidt

IPC分类号： H02P6/18

CPC分类号： H02P6/182 ,  H02P6/157

摘要： To achieve peak acoustic and power performance, the coil or applied current should be in phase or substantially aligned with the back electromotive force (back-EMF) voltage. However, there are generally phase differences between the applied current and back-EMF voltage that are induced by the impedance of the brushless DC motor (which can vary based on conditions, such as temperature and motor speed). Traditionally, compensation for these phase differences was provided manually and on an as-needed basis. Here, however, a system and method are provided that automatically perform a commutation advance by incrementally adjusting a drive signal over successive commutation cycles when the applied current and back-EMF voltage are misaligned.

摘要翻译： 为了实现峰值声功率性能，线圈或施加电流应与反电动势（反电动势）电压同相或基本对齐。 然而，由无刷直流电动机的阻抗引起的施加的电流和反电动势电压之间通常存在相位差（其可以基于诸如温度和电动机速度的条件而变化）。 传统上，这些阶段差异的补偿手工提供，并根据需要提供。 然而，这里提供了一种系统和方法，当所施加的电流和反电动势电压不对准时，通过在连续换向循环上逐渐调节驱动信号来自动执行换向提前。

公开(公告)号：US20120169264A1

公开(公告)日：2012-07-05

申请号：US12985090

申请日：2011-01-05

申请人： John K. Rote ,  Seil Oh

发明人： John K. Rote ,  Seil Oh

IPC分类号： H02P6/18

CPC分类号： G11B19/28 ,  H02P6/10 ,  H02P6/15 ,  H02P6/182 ,  H02P6/28

摘要： Traditionally, controllers for brushless, sensorless direct current (DC) motors (in, for example, Hard Disk Drive applications) would use one of the phases of the DC motor to measure a back electromotive force (back-EMF) voltage. This measurement would generally cause a discontinuity in the current waveform for a motor operating at a generally constant rotational speed (i.e., at “run speed”), which would result in poor acoustic performance (i.e., audible hum). Here, however, an integrated circuit (IC) is provided that uses coil current and applied voltage measurements to substantially maintain a predetermined phase difference between the phase of the applied voltage and back-EMF voltage, eliminating the need for a back-EMF voltage measurement and improving the acoustic performance.

摘要翻译： 传统上，用于无刷，无传感器直流（DC）电机（例如硬盘驱动器应用）的控制器将使用直流电动机的一个相位来测量反电动势（反电动势）电压。 这种测量通常会导致电机波形以不变的速度运行（即“运行速度”），这将导致较差的声学性能（即可听见的嗡嗡声）。 然而，这里提供了一种集成电路（IC），其使用线圈电流和施加的电压测量来基本上保持所施加的电压和反电动势电压的相位之间的预定的相位差，从而消除了对反电动势电压测量的需要 并提高声学性能。

公开(公告)号：US09050104B2

公开(公告)日：2015-06-09

申请号：US12995247

申请日：2010-02-09

申请人： Seil Oh

发明人： Seil Oh

IPC分类号： A61B18/12 ,  A61B18/14 ,  A61B17/00 ,  A61B18/00 ,  A61B19/00

CPC分类号： A61B18/1492 ,  A61B18/1206 ,  A61B34/73 ,  A61B2017/00243 ,  A61B2018/00577 ,  A61B2018/00875 ,  A61B2018/1467

摘要： The present invention provides a bipolar radiofrequency ablation catheter comprising a working catheter and a magnetic catheter. The magnetic catheter comprises a first tube; a magnet; a first electrode; and a first electrode connector, and the working catheter comprises a second tube; a metallic element; a second electrode; and a second electrode connector. According to the present invention, it is possible to create transmural lesions more completely and easily at a thick myocardial region such as left ventricle in which a transmural lesion could not be easily created by using conventional radiofrequency ablation catheters and thus it is expected to increase the treatment efficiency for tachycardia such as ventricular tachycardia and atrial fibrillation.

摘要翻译： 本发明提供一种包括工作导管和磁导管的双极性射频消融导管。 磁导管包括第一管; 磁铁 第一电极; 和第一电极连接器，并且所述工作导管包括第二管; 金属元素 第二电极; 和第二电极连接器。 根据本发明，可以在通过使用常规射频消融导管不容易产生透壁损伤的厚心肌区域（例如左心室）更完全和容易地产生透壁损伤，因此预期增加 心动过速的治疗效果，如室性心动过速和房颤。

公开(公告)号：US20110087210A1

公开(公告)日：2011-04-14

申请号：US12995247

申请日：2010-02-09

申请人： Seil Oh

发明人： Seil Oh

IPC分类号： A61B18/18

CPC分类号： A61B18/1492 ,  A61B18/1206 ,  A61B34/73 ,  A61B2017/00243 ,  A61B2018/00577 ,  A61B2018/00875 ,  A61B2018/1467

摘要： The present invention provides a bipolar radiofrequency ablation catheter comprising a working catheter and a magnetic catheter. The magnetic catheter comprises a first tube; a magnet; a first electrode; and a first electrode connector, and the working catheter comprises a second tube; a metallic element; a second electrode; and a second electrode connector. According to the present invention, it is possible to create transmural lesions more completely and easily at a thick myocardial region such as left ventricle in which a transmural lesion could not be easily created by using conventional radiofrequency ablation catheters and thus it is expected to increase the treatment efficiency for tachycardia such as ventricular tachycardia and atrial fibrillation.

摘要翻译： 本发明提供一种包括工作导管和磁导管的双极性射频消融导管。 磁导管包括第一管; 磁铁 第一电极; 和第一电极连接器，并且所述工作导管包括第二管; 金属元素 第二电极; 和第二电极连接器。 根据本发明，可以在通过使用常规射频消融导管不容易产生透壁损伤的厚心肌区域（例如左心室）更完全和容易地产生透壁损伤，因此预期增加 心动过速的治疗效果，如室性心动过速和房颤。