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70 条记录 (耗时 0.026 秒)

    Mitigation of MR read head distortion
    1.
    发明申请
    Mitigation of MR read head distortion 失效
    减少MR读头失真

    公开(公告)号：US20060285237A1

    公开(公告)日：2006-12-21

    申请号：US11154123

    申请日：2005-06-16

    申请人： Josephine Bayang ,  Ernest Gale ,  David Swanson

    发明人： Josephine Bayang ,  Ernest Gale ,  David Swanson

    IPC分类号： G11B5/09 ,  G11B5/03

    CPC分类号： G11B5/09 ,  G11B5/00813 ,  G11B20/10009 ,  G11B2005/0013

    摘要： Mitigation of distortion of read signals from magneto-resistive read head(s) are provided in various embodiments of the present invention. In one embodiment, the read signals provided to a read channel having an analog to digital converter and digital equalizer. Digital peak measurement apparatus is configured to sense the output of the digital equalizer, and provide average positive peak values and average negative peak values of the output. Control apparatus is configured to respond to the peak values, to iteratively determine asymmetry of the peak values and estimate the cancellation slope of the asymmetry and cancellation term relationship; from the measured asymmetry and estimated cancellation slope, to iteratively estimate the convergence cancellation term; and to feed back the convergence cancellation term to modify the digital read signals for the input of the digital equalizer to iteratively converge the asymmetry to substantially zero.

    摘要翻译： 在本发明的各种实施例中提供了从磁阻读取头读取信号的失真的缓解。 在一个实施例中，提供给具有模数转换器和数字均衡器的读通道的读信号。 数字峰值测量装置被配置为感测数字均衡器的输出，并且提供输出的平均正峰值和平均负峰值。 控制装置被配置为响应峰值，迭代地确定峰值的不对称性并且估计不对称和消除项关系的抵消斜率; 从测量的不对称和估计的抵消斜率，迭代估计收敛消除项; 并且反馈收敛消除项以修改用于数字均衡器的输入的数字读取信号，以将不对称性迭代收敛到基本为零。

    Peak detection for magnetic tape timing based servo
    2.
    发明申请
    Peak detection for magnetic tape timing based servo 失效
    基于磁带定时伺服的峰值检测

    公开(公告)号：US20070115581A1

    公开(公告)日：2007-05-24

    申请号：US11286808

    申请日：2005-11-22

    申请人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  David Swanson

    发明人： Nhan Bui ,  Ernest Gale ,  Eiji Ogura ,  David Swanson

    IPC分类号： G11B5/584

    CPC分类号： G11B5/584

    摘要： Selection of servo signals for peak detection of timing based servo tracks of magnetic tape for lateral positioning of heads relative to the magnetic tape. Servo signals from magneto-resistive servo read head(s) reading a magnetic tape are digitized by analog to digital converter(s); digital peak measurement apparatus is configured to sense the digital converter(s), and provide positive peak values and negative peak values of the digitized servo signals; and control apparatus is configured to determine the greater of the provided positive peak values or negative peak values, and select servo signals having the greater values for a servo channel. Servo apparatus is configured to respond to the selected servo signals to control the lateral positioning of the servo read head(s).

    摘要翻译： 选择伺服信号，用于峰值检测用于磁头的定时伺服磁道，用于磁头相对于磁带的横向定位。 来自读磁带的磁阻伺服读头的伺服信号由模拟数字转换器数字化; 数字峰值测量装置被配置为感测数字转换器，并且提供数字化伺服信号的正峰值和负峰值; 并且控制装置被配置为确定所提供的正峰值或负峰值中的较大值，并且选择对伺服信道具有较大值的伺服信号。 伺服装置被配置为响应所选择的伺服信号以控制伺服读取头的横向定位。

    Ablative treatment of the heart to improve patient outcomes following surgery
    3.
    发明申请
    Ablative treatment of the heart to improve patient outcomes following surgery 有权
    烧伤治疗心脏以改善手术后的患者结果

    公开(公告)号：US20070156185A1

    公开(公告)日：2007-07-05

    申请号：US11651439

    申请日：2007-01-08

    申请人： David Swanson ,  Arthur Bertolero

    发明人： David Swanson ,  Arthur Bertolero

    IPC分类号： A61N1/00

    CPC分类号： A61B18/00 ,  A61B1/12 ,  A61B5/0536 ,  A61B18/14 ,  A61B18/1402 ,  A61B18/1442 ,  A61B18/1477 ,  A61B18/148 ,  A61B18/1492 ,  A61B18/18 ,  A61B18/20 ,  A61B2017/00243 ,  A61B2017/22051 ,  A61B2017/2945 ,  A61B2018/00011 ,  A61B2018/00023 ,  A61B2018/00029 ,  A61B2018/00083 ,  A61B2018/0022 ,  A61B2018/00291 ,  A61B2018/00345 ,  A61B2018/00351 ,  A61B2018/00363 ,  A61B2018/00375 ,  A61B2018/00404 ,  A61B2018/00577 ,  A61B2018/00875 ,  A61B2018/00982 ,  A61B2018/0225 ,  A61B2018/0262 ,  A61B2018/126 ,  A61B2018/1425 ,  A61B2018/1432 ,  A61B2090/373 ,  A61B2090/378 ,  A61N1/0587

    摘要： Devices and methods provide for ablation of cardiac tissue for treating cardiac arrhythmias such as atrial fibrillation. Although the devices and methods are often be used to ablate epicardial tissue in the vicinity of at least one pulmonary vein, various embodiments may be used to ablate other cardiac tissues in other locations on a heart. Devices generally include at least one tissue contacting member for contacting epicardial tissue and securing the ablation device to the epicardial tissue, and at least one ablation member for ablating the tissue. Various embodiments include features, such as suction apertures, which enable the device to attach to the epicardial surface with sufficient strength to allow the tissue to be stabilized via the device. For example, some embodiments may be used to stabilize a beating heart to enable a beating heart ablation procedure. Many of the devices may be introduced into a patient via minimally invasive introducer devices and the like. Although devices and methods of the invention may be used to ablate epicardial tissue to treat atrial fibrillation, they may also be used in veterinary or research contexts, to treat various heart conditions other than atrial fibrillation and/or to ablate cardiac tissue other than the epicardium. A method is described for treating cardiac arrhythmia by: verifying at least one location of a patient's cardiac parasympathetic ganglia, advancing at least one treatment member through an incision on the patient into the vicinity of the cardiac parasympathetic ganglia and applying energy to ablate at least one the cardiac parasympathetic ganglia. A combined pacing and ablation probe is described for performing the method.

    摘要翻译： 装置和方法提供用于治疗心律失常的心脏组织的消融，例如心房颤动。 虽然通常使用装置和方法来消融至少一个肺静脉附近的心外膜组织，但是可以使用各种实施例来消融心脏上其他位置的其他心脏组织。 装置通常包括用于接触心外膜组织并将消融装置固定到心外膜组织的至少一个组织接触构件以及用于烧蚀组织的至少一个消融构件。 各种实施例包括诸如抽吸孔的特征，其使得装置能够以足够的强度附着到心外膜表面，以允许组织通过装置稳定。 例如，一些实施例可用于稳定跳动心脏以实现搏动心脏消融手术。 可以通过微创导引器装置等将许多装置引入患者体内。 尽管本发明的装置和方法可用于消融心外膜组织以治疗房颤，但它们也可用于兽医学或研究领域，以治疗心房颤动以外的各种心脏病和/或除心外膜外的心脏组织 。 描述了一种通过以下方式来治疗心律失常的方法：通过以下方式来验证患者的心脏副交感神经节的至少一个位置，将至少一个治疗构件通过患者的切口推进到心脏副交感神经节附近并施加能量以消融至少一个 心脏副交感神经节。 描述了组合的起搏和消融探针以执行该方法。

    Method and system for determining a rotor position in a wound field DC motor
    6.
    发明申请
    Method and system for determining a rotor position in a wound field DC motor 有权
    用于确定伤口直流电机中的转子位置的方法和系统

    公开(公告)号：US20050283324A1

    公开(公告)日：2005-12-22

    申请号：US10870252

    申请日：2004-06-17

    申请人： David Swanson

    发明人： David Swanson

    IPC分类号： G01R15/00 ,  G06F19/00 ,  H02P6/18

    CPC分类号： H02P6/185

    摘要： A method for determining a rotor position in a DC motor having a plurality of windings, including a rotor winding and a plurality of stator windings begins with producing a changing current flow in a pulsed winding to induce a response signal in other windings of the motor. The pulsed winding may be the rotor winding or selected ones of the stator windings. If the pulsed winding is the rotor winding, response signals induced in at lest two of the stator windings are analyzed compute the rotor position. If the pulsed winding is the stator winding, response signals induced from pulsing at least two stator windings are sensed in the rotor winding and analyzed compute the rotor position. A system for computing a rotor position may include comparators for comparing induced response signals in stator windings.

    摘要翻译： 一种用于确定具有多个绕组的DC电动机中的转子位置的方法，包括转子绕组和多个定子绕组，其开始于在脉冲绕组中产生变化的电流以在电机的其它绕组中引起响应信号。 脉冲绕组可以是转子绕组或选定的定子绕组。 如果脉冲绕组是转子绕组，则分析在两个定子绕组中产生的响应信号计算转子位置。 如果脉冲绕组是定子绕组，则在转子绕组中检测到从至少两个定子绕组脉冲引起的响应信号，并分析计算转子位置。 用于计算转子位置的系统可以包括用于比较定子绕组中的感应响应信号的比较器。

    Irrigation sheath
    7.
    发明申请
    Irrigation sheath 审中-公开
    灌溉护套

    公开(公告)号：US20050177151A1

    公开(公告)日：2005-08-11

    申请号：US10625194

    申请日：2003-07-23

    申请人： Thomas Coen ,  Katie Krueger ,  Dorin Panescu ,  David Swanson ,  Miriam Taimisto

    发明人： Thomas Coen ,  Katie Krueger ,  Dorin Panescu ,  David Swanson ,  Miriam Taimisto

    IPC分类号： A61B18/00 ,  A61B18/14 ,  A61B18/18

    CPC分类号： A61B18/1492 ,  A61B2018/00029 ,  A61B2018/00577 ,  A61B2218/002

    摘要： A medical system for performing a tissue ablation procedure comprises a guide sheath and an ablation catheter disposed within an internal lumen of the catheter. The guide sheath has a distal end that includes irrigation exit ports that are configured to perfuse irrigation fluid in a distal direction over the ablation electrode of the catheter when the distal end of the catheter protrudes from the guide sheath. In this manner, the ablation electrode can be advantageously cooled during the tissue ablation process, thereby maximizing the size and depth of the ablation lesion and reducing the duration of the ablation process.

    摘要翻译： 用于执行组织消融手术的医疗系统包括导管鞘和设置在导管的内腔内的消融导管。 引导护套具有远端，其包括冲洗出口，所述冲洗出口被构造成当导管的远端从引导护套突出时，沿远端方向灌注导管的消融电极。 以这种方式，可以有利地在组织消融过程期间冷却消融电极，从而最大化消融损伤的尺寸和深度并减少消融过程的持续时间。

    System and process for drying a moving sheet
    8.
    发明授权
    System and process for drying a moving sheet 失效
    用于干燥移动片材的系统和方法

    公开(公告)号：US5101578A

    公开(公告)日：1992-04-07

    申请号：US574574

    申请日：1990-08-24

    申请人： David Swanson

    发明人： David Swanson

    IPC分类号： F26B3/30

    CPC分类号： F26B3/30

    摘要： A system for drying a moving sheet includes a housing, support means connected to the housing to support heater bulbs adjacent to moving sheet and a power supply connected to the bulbs. The heater bulbs are located so that at least part of the radiation from each of the bulbs travels directly to the sheet without passing through another bulb while from a plurality of bulbs part of the radiation travels in a straight line to the sheet and before reaching the sheet the radiation passes between two other bulbs without passing through another bulb.

    摘要翻译： 用于干燥移动片材的系统包括壳体，连接到壳体的支撑装置，以支撑与移动片材相邻的加热器灯泡以及连接到灯泡的电源。 加热器灯泡被定位成使得来自每个灯泡的辐射的至少一部分直接传播到片材而不通过另一个灯泡，而从多个灯泡中，部分辐射以直线行进到片材并且在达到 片材辐射在两个其他灯泡之间通过，而不通过另一个灯泡。