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133 条记录 (耗时 0.042 秒)

    Heart pacemaker with separate A-V intervals for atrial synchronous and atrial-ventricular sequential pacing modes
    111.
    发明授权
    Heart pacemaker with separate A-V intervals for atrial synchronous and atrial-ventricular sequential pacing modes 失效
    心脏起搏器，具有单独的A-V间隔，用于心房同步心房和心房间期起搏模式

    公开(公告)号：US4421116A

    公开(公告)日：1983-12-20

    申请号：US356791

    申请日：1982-03-10

    申请人： H. Toby Markowitz

    发明人： H. Toby Markowitz

    IPC分类号： A61N1/368 ,  A61N1/36

    CPC分类号： A61N1/368 ,  A61N1/3682

    摘要： A dual chamber heart pacemaker has atrial and ventricular pulse generators (21, 22) and sense amplifiers (25, 26) which connect respectively to an atrial terminal (11) and a ventricular terminal (12) for connection to the heart. In an atrial synchronous mode, the pacemaker provides ventricular stimulating pulses in response to detected spontaneous atrial contractions, and spaced from them by an A-V interval determined by a timer (31). In an atrial-ventricular sequential mode, a timer (40) causes the pacemaker to deliver sequential atrial and ventricular stimulation pulses which are separated in time by an A-V interval determined by another timer (30). The atrial-ventricular intervals for atrial synchronous mode and atrial-ventricular sequential mode are independent of each other, permitting selection of different A-V intervals for the two modes of operation.

    摘要翻译： 双室心脏起搏器具有分别连接到心房终端（11）和心室终端（12）的心房和心室脉冲发生器（21,22）和感测放大器（25,26）。 在心房同步模式中，起搏器响应于检测到的自发心房收缩而提供心室刺激脉冲，并且通过由定时器（31）确定的A-V间隔与心室起搏器间隔开。 在心房 - 心室顺序模式中，定时器（40）使得起搏器输送顺序的心房和心室刺激脉冲，其在时间上被由另一定时器（30）确定的A-V间隔分开。 心房同步模式和房室顺序模式的房室间隔彼此独立，允许为两种运作模式选择不同的A-V间隔。

    Body tissue depolarization evaluation system
    112.
    发明授权
    Body tissue depolarization evaluation system 失效
    身体组织去极化评估系统

    公开(公告)号：US4411271A

    公开(公告)日：1983-10-25

    申请号：US347522

    申请日：1982-02-10

    申请人： H. Toby Markowitz

    发明人： H. Toby Markowitz

    IPC分类号： A61N1/365 ,  A61N1/37

    CPC分类号： A61N1/365 ,  A61N1/371

    摘要： An evaluation system for use in conjunction with a body implantable body stimulator, the body stimulator including a stimulation delivering and depolarization sensing lead system. An input connects a digitizer to the lead system, the digitizer digitizing depolarization signals sensed by the lead system. A computing system identifies excursions in the digitized depolarization signals and evaluates identified excursions in accordance with preselected merit criteria. An output gives an indication of at least that excursion having the highest merit that satisfies said merit criteria.

    摘要翻译： 一种与身体可植入体刺激器结合使用的评估系统，身体刺激器包括刺激输送和去极化感测引线系统。 输入端将数字转换器连接到引导系统，数字转换器将引导系统检测到的去极化信号数字化。 计算系统识别数字化去极化信号中的偏移，并根据预选的优值标准评估所识别的偏移。 输出给出至少具有满足所述优点标准的具有最高优点的偏移的指示。

    Pacemaker triggering coupling circuit
    113.
    发明授权
    Pacemaker triggering coupling circuit 失效
    起搏器触发耦合电路

    公开(公告)号：US4344437A

    公开(公告)日：1982-08-17

    申请号：US145051

    申请日：1980-04-30

    申请人： H. Toby Markowitz

    发明人： H. Toby Markowitz

    IPC分类号： A61N1/368 ,  A61N1/30

    CPC分类号： A61N1/368

    摘要： An improved atrial synchronous pacemaker and control circuit therefor having a minimum ventricular rate backup mode includes circuitry for preventing occurrence of a closely coupled ventricular pulse which might otherwise occur during the vulnerable repolarization period of the ventricles. A triggering coupling circuit includes a variable or programmable upper rate limit/minimum escape interval timer and switching means therefor for switching to a relatively low maximum rate/minimum escape interval condition while pacing in the ventricular backup mode, and for switching to a higher programmed maximum rate/minimum escape interval limit value while pacing in atrial synchronous mode.

    摘要翻译： 具有最小心室率备用模式的改进的心房同步起搏器及其控制电路包括用于防止紧密耦合的心室脉搏的出现的电路，否则可能会在心室的易失性复极期间发生。 触发耦合电路包括可变或可编​​程的上限速率限制/最小逃逸间隔定时器及其切换装置，用于在心室备用模式下切换到相对较低的最大速率/最小逃逸间隔条件，并切换到更高的编程最大值 速率/最小逃逸间隔极限值，同时起搏在心房同步模式。

    DEVICES AND METHODS FOR SIZING VALVE APERTURES AND LUMINAL ORGANS
    114.
    发明申请
    DEVICES AND METHODS FOR SIZING VALVE APERTURES AND LUMINAL ORGANS 审中-公开

    公开(公告)号：US20200281505A1

    公开(公告)日：2020-09-10

    申请号：US16800970

    申请日：2020-02-25

    申请人： H. Toby Markowitz ,  3DT Holdings, LLC

    发明人： Ghassan S. Kassab ,  H. Toby Markowitz

    IPC分类号： A61B5/107 ,  A61B5/053 ,  A61B5/00

    摘要： Devices and methods for sizing valve apertures and luminal organs. In at least one embodiment of a device for obtaining measurements within a luminal organ of the present disclosure, the device comprises an elongated body having a distal end and at least two electrodes positioned at the distal end of the elongated body or to a portion of the device distal tot the distal end of the elongated body, the device configured to obtain data sufficient to determine a dimensional measurement within the mammalian luminal organ when positioned and operated therein.

    Method and Apparatus for Regulating the Formation of Ice On A Catheter
    119.
    发明申请
    Method and Apparatus for Regulating the Formation of Ice On A Catheter 审中-公开
    用于调节导管上冰的形成的方法和装置

    公开(公告)号：US20120191080A1

    公开(公告)日：2012-07-26

    申请号：US13013030

    申请日：2011-01-25

    申请人： H. Toby Markowitz

    发明人： H. Toby Markowitz

    IPC分类号： A61B18/02

    CPC分类号： A61B18/02 ,  A61B2018/00041 ,  A61B2018/00214 ,  A61B2018/00875 ,  A61B2018/0212

    摘要： A method and apparatus is provided, including regulating the generation and formation of ice and active warming of an instrument applied to the tissue of a patient. The method may include measuring a parameter from a sensor disposed on the instrument. The forming of ice and active warming of the instrument may be via a thermal source in fluid communication with the instrument.

    摘要翻译： 提供了一种方法和装置，包括调节施加到患者组织的器械的冰的产生和形成以及主动变暖。 该方法可以包括从设置在仪器上的传感器测量参数。 冰的形成和仪器的主动升温可以通过与仪器流体连通的热源。

    System and Method for Guide Wire Detection
    120.
    发明申请
    System and Method for Guide Wire Detection 审中-公开
    导线检测系统和方法

    公开(公告)号：US20110208075A1

    公开(公告)日：2011-08-25

    申请号：US12712656

    申请日：2010-02-25

    申请人： Chad T. Giese ,  H. Toby Markowitz

    发明人： Chad T. Giese ,  H. Toby Markowitz

    IPC分类号： A61B5/0452 ,  A61B5/053

    CPC分类号： A61B5/0538 ,  A61B5/0452 ,  A61B5/6851

    摘要： A system for detecting a protrusion of a conductor within an anatomy is provided. The system can include a conductor, an insulator and a protrusion module to indicate a protrusion if the conductor protrudes from the insulator within the anatomy. The conductor can comprise a guide wire, a stylet, a pacing lead, a defibrillation lead, or other conductive instruments. The insulator can comprise a catheter, a sheath a cannula or other insulative instruments. The system can detect protrusion based on an impedance or an electrogram measurement.

    摘要翻译： 提供一种用于检测解剖结构内的导体突起的系统。 如果导体从解剖结构内的绝缘体突出，则系统可以包括导体，绝缘体和突出模块以指示突起。 导体可以包括导线，探针，起搏引线，除颤引线或其它导电器件。 绝缘体可以包括导管，护套套管或其它绝缘器械。 该系统可以基于阻抗或电描记测量来检测突起。