Device and method for chaos based cardiac fibrillation detection
    1.
    发明授权
    Device and method for chaos based cardiac fibrillation detection 失效
    基于混沌心脏颤动检测的装置和方法

    公开(公告)号:US5439004A

    公开(公告)日:1995-08-08

    申请号:US173797

    申请日:1993-12-23

    IPC分类号: A61B5/046 G06F17/00

    CPC分类号: A61B5/046

    摘要: A system and method for detecting ventricular fibrillation based on chaos theory. A Poincare plot of the amplitude of the ECG signal is generated and used to detect the presence of fibrillation. The plot is monitored for the data points drifting off the plot axes. Upon detecting such drift, the presence of ventricular fibrillation is confirmed. The system and method may be used as a primary detection scheme or as a backup system to reconfirm fibrillation detection using conventional techniques.

    摘要翻译: 一种基于混沌理论检测心室颤动的系统和方法。 产生ECG信号幅度的庞加莱图,并用于检测原纤维的存在。 监测从绘图轴漂移的数据点的情节。 在检测到这种漂移时,证实了心室颤动的存在。 系统和方法可以用作主要检测方案或作为备用系统,以使用常规技术重新确认原纤维化检测。

    Defibrillator having redundant switchable high voltage capacitors
    2.
    发明授权
    Defibrillator having redundant switchable high voltage capacitors 失效
    除颤器具有冗余的可切换高压电容器

    公开(公告)号:US5591211A

    公开(公告)日:1997-01-07

    申请号:US353406

    申请日:1994-12-09

    申请人: Mark J. Meltzer

    发明人: Mark J. Meltzer

    IPC分类号: A61N1/39

    摘要: An implantable cardioverter defibrillator having a plurality of high voltage capacitors in the output stage which are coupled in parallel and a switching matrix for controlling the number of capacitors used to deliver the shock. For patients having lower DFTs, the number of capacitors in the output stage, as controlled by the switching matrix, can be reduced thus reducing the capacitor charging time prior to delivering a defibrillation shock. Additionally, if one of the capacitors experiences a degradation in performance, it can be switched out of the output circuit as long as the remaining capacitors can provide the necessary energy delivery for defibrillation. In another embodiment of the invention, if a particular defibrillation shock is ineffective, the back-up capacitors may be switched into the high voltage output circuit for delivery of the next shock.

    摘要翻译: 一种可并联耦合的输出级中具有多个高电压电容器的可植入式心律转复除颤器和用于控制用于传递冲击的电容器数目的开关矩阵。 对于具有较低DFT的患者,可以减少由开关矩阵控制的输出级中的电容器数量,从而减少在递送除颤电击之前的电容器充电时间。 另外,如果其中一个电容器性能下降,只要剩下的电容器可以为除颤提供必要的能量输送,就可将其切换出输出电路。 在本发明的另一个实施例中,如果特定的除颤电击无效,则备用电容器可以被切换到高电压输出电路中,用于传送下一次电击。

    Apparatus and method for forming an adhesively bonded seam between resiliently compressible fabric sheets
    3.
    发明授权
    Apparatus and method for forming an adhesively bonded seam between resiliently compressible fabric sheets 失效
    用于在弹性可压缩织物片之间形成粘合接缝的装置和方法

    公开(公告)号:US06375770B1

    公开(公告)日:2002-04-23

    申请号:US08909367

    申请日:1997-08-11

    IPC分类号: B29C6508

    摘要: An apparatus (21, 221, 231) for forming a butt seam (33, 233, 354) between opposed edges (32, 33, 231, 232) of resiliently compressible, fully cured, elastomeric, fabric sheets (28, 29, 228, 229, 351, 352), such as foamed neoprene for wet suits and dry suits. In some embodiments (21, 221) the apparatus includes fabric manipulating assembly (23, 223) which continuously compresses the sheets proximate and inwardly of the edges, preferably by a roller assembly (26, 27, 226, 227), to firmly press the opposed edges of the flexible and compressible sheets (28, 29, 228, 229) tightly together during movement and bonding along the seam (33, 233). The apparatus (21, 221, 331) preferably includes adhesive activation device in the form of an ultrasonic transducer (24, 222, 322) which contacts the neoprene pieces to activate a dry neoprene cement carried on the edges of the fabric pieces. Embodiments (221, 321) are shown which include a force applying assembly (224, 324) that hammers the foam pieces against the ultrasonic transducer horn (222), or the horn (322) against the foam pieces, to enhance sonic energy coupling and to simultaneously press the pieces together for improved adhesive bonding. A method for forming the butt seam (33, 233, 354) is described.

    摘要翻译: 一种用于在弹性可压缩,完全固化的弹性织物片(28,29,228)的相对边缘(32,33,231,232)之间形成对接接缝(33,233,354)的装置(21,221,231) ,229,351,352),例如用于湿衣服的泡沫氯丁橡胶和干衣服。 在一些实施例(21,221)中,该装置包括织物操纵组件(23,223),该织物操纵组件(23,223)优选地通过辊组件(26,27,226,227)连续压缩边缘附近和内侧的片材,以牢固地按压 柔性和可压缩片材(28,29,228,29)的相对边缘沿着接缝(33,233)移动和粘合期间紧密地在一起。 设备(21,221,331)优选地包括与超声波换能器(24,222,322)形式的粘合剂激活装置,其接触氯丁橡胶片,以激活承载在织物片边缘上的干燥氯丁橡胶。 示出了实施例(221,321),其包括将泡沫块相对于超声波换能器喇叭(222)或喇叭(322)打击泡沫块的力施加组件(224,324),以增强声能耦合和 同时将这些块压在一起以改善粘合剂粘结。 描述了形成对接缝(33,233,354)的方法。

    Correlator based electromagnetic interference responsive control system
useful in medical devices
    6.
    发明授权
    Correlator based electromagnetic interference responsive control system useful in medical devices 失效
    基于相关器的电磁干扰响应控制系统可用于医疗设备

    公开(公告)号:US5647379A

    公开(公告)日:1997-07-15

    申请号:US343294

    申请日:1994-11-22

    申请人: Mark J. Meltzer

    发明人: Mark J. Meltzer

    摘要: A system is provided to control operation of an implantable medical device based upon detected EMI (electromagnetic interference). A correlator produces a correlation function indicating the level of an EMI component of an input biomedical signal that includes a biomedical signal component and an EMI component, and that is monitored relative to a predetermined threshold to allow the device to operate in a normal manner as long as the intensity or level of the EMI component is such that it does not affect or interfere with device operation. One or more remedial measures may be selected in the event the level of the EMI component exceeds a predetermined threshold. The system is useful with any electronic device which receives an electronic information signal which may include an EMI component.

    摘要翻译: 提供一种系统,用于根据检测到的EMI(电磁干扰)来控制可植入医疗设备的操作。 相关器产生指示包括生物医学信号分量和EMI分量的输入生物医学信号的EMI分量的相关函数的相关函数,并且相对于预定阈值被监测,以允许器件以正常方式长时间运行 因为EMI组件的强度或水平使其不影响或干扰设备操作。 在EMI成分的电平超过预定阈值的情况下,可以选择一种或多种补救措施。 该系统对于接收可能包括EMI组件的电子信息信号的任何电子设备是有用的。

    Conforming implantable defibrillator
    7.
    发明授权
    Conforming implantable defibrillator 失效
    符合可植入除颤器

    公开(公告)号:US5645586A

    公开(公告)日:1997-07-08

    申请号:US272722

    申请日:1994-07-08

    申请人: Mark J. Meltzer

    发明人: Mark J. Meltzer

    IPC分类号: A61N1/39 A61F2/00

    CPC分类号: A61N1/3956

    摘要: An implantable device, such as a defibrillator, has a conforming housing that is adapted to follow to the contours of the patient's body at a device implantation site, while complying with pressures applied to the patient's body and with body flexion. In one form of the invention, the device housing is articulated at one or more hinge locations to provide a segmented housing that conforms to an implantation site through movement about the hinge axis. Another embodiment of the invention provides a flexible housing that surrounds a flex-circuit assembly.

    摘要翻译: 诸如除纤颤器的可植入装置具有适合于在装置植入部位跟随患者身体轮廓的符合壳体,同时遵守施加于患者身体的压力和身体弯曲的压力。 在本发明的一种形式中,装置壳体铰接在一个或多个铰链位置,以通过围绕铰链轴的运动来提供符合植入部位的分段壳体。 本发明的另一个实施例提供了围绕柔性电路组件的柔性壳体。