利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

43 条记录 (耗时 0.022 秒)

    MONITORING APPARATUS USING WAVELET TRANSFORMS FOR THE ANALYSIS OF HEART RHYTHMS
    31.
    发明授权
    MONITORING APPARATUS USING WAVELET TRANSFORMS FOR THE ANALYSIS OF HEART RHYTHMS 有权
    监控设备与使用小波HERZRRHYTHMUSANALYSE

    公开(公告)号：EP1178855B1

    公开(公告)日：2006-08-02

    申请号：EP00928905.9

    申请日：2000-05-08

    申请人： MEDTRONIC, INC.

    发明人： GILLBERG, Jeffrey, M. ,  KOYRAKH, Lev, A.

    IPC分类号： A61N1/362 ,  G06F17/00

    CPC分类号： A61N1/3621 ,  A61B5/04525 ,  A61B5/046 ,  A61B5/0464 ,  A61B5/7232 ,  A61B5/726

    摘要： A device for monitoring heart rhythms. The device is provided with an amplifier for receiving electrogram signals, a memory for storing digitized electrogram segments including signals indicative of depolarizations of a chamber or chamber of a patient's heart and a microprocessor and associated software for transforming analyzing the digitized signals. The digitized signals are analyzed by first transforming the signals into signal wavelet coefficients using a wavelet transform. The higher amplitude ones of the signal wavelet coefficients are identified and the higher amplitude ones of the signal wavelet coefficients are compared with a corresponding set of template wavelet coefficients derived from signals indicative of a heart depolarization of known type. The digitized signals may be transformed using a Haar wavelet transform to obtain the signal wavelet coefficients, and the transformed signals may be filtered by deleting lower amplitude ones of the signal wavelet coefficients. The transformed signals may be compared by ordering the signal and template wavelet coefficients by absolute amplitude and comparing the orders of the signal and template wavelet coefficients. Alternatively, the transformed signals may be compared by calculating distances between the signal and wavelet coefficients. In preferred embodiments the Haar transform may be a simplified transform which also emphasizes the signal contribution of the wider wavelet coefficients.

    AUTOMATED TEMPLATE GENERATION
    33.
    发明公开
    AUTOMATED TEMPLATE GENERATION 有权
    自动生产模式

    公开(公告)号：EP1339455A2

    公开(公告)日：2003-09-03

    申请号：EP01998376.6

    申请日：2001-11-27

    申请人： Medtronic, Inc.

    发明人： KOYRAKH, Lev, A. ,  GILLBERG, Jeffrey, M. ,  DAVYDOV, Eugene

    IPC分类号： A61N1/37 ,  A61N1/39

    CPC分类号： A61N1/3956 ,  A61N1/3622 ,  A61N1/3702

    摘要： A method of generating a template in an implantable medical device for implantation within a patient, and a processor readable medium for performing the method, that includes generating a template corresponding to a supraventricular rhythm of the patient, determining whether the template is valid, and monitoring the template to determine whether the template is an accurate representation of the supraventricular rhythm. The template is created from non-paced R waves that are below a predetermined heart rate, and a statistical validation of the template is performed by evaluating the template based on matches against ongoing slow heart rhythm. The quality of the template is continuously monitored, similar to the statistical validation, with the exception that one thousand beats are evaluated and once more than thirty out of the last one hundred beats do not match the template within the threshold, an attempt is made to create a new template.

    SYSTEM FOR DETECTING VENTRICULAR DEPOLARIZATIONS DURING ATRIAL PACING
    39.
    发明授权
    SYSTEM FOR DETECTING VENTRICULAR DEPOLARIZATIONS DURING ATRIAL PACING 有权
    系统心室去极化心房起搏鉴定

    公开(公告)号：EP1596933B1

    公开(公告)日：2008-08-13

    申请号：EP04708554.3

    申请日：2004-02-05

    申请人： MEDTRONIC, INC.

    发明人： SHELDON, Todd, J. ,  GILLBERG, Jeffrey, M.

    IPC分类号： A61N1/362 ,  A61B5/0468

    CPC分类号： A61N1/3622 ,  A61B5/0468

    摘要： AV synchronous, dual chamber pacing systems are disclosed having improved sensing of ectopic ventricular depolarizations or PVCs coincidentally occurring at or shortly following delivery of an A-PACE pulse. A first ventricular sense amplifier that is blanked during and following delivery of an A-PACE pulse is coupled to active and indifferent ventricular pace/sense electrodes defining a ventricular sense vector for sensing natural ventricular depolarizations and declaring a V-EVENT. A far field PVC sense amplifier coupled to a far field PVC sense electrode pair defining a PVC sense vector detects such PVCs while the ventricular sense amplifier is blanked. A PVC declared during the ventricular blanking period by the far field PVC sense amplifier is employed to deliver a VSP pulse upon time-out of a VSP delay, if the VSP function is provided and programmed ON, and/or to halt time-out of an AV delay.

    AUTOMATED TEMPLATE GENERATION ALGORITHM FOR IMPLANTABLE DEVICE
    40.
    发明公开
    AUTOMATED TEMPLATE GENERATION ALGORITHM FOR IMPLANTABLE DEVICE 有权
    原稿自动给一代植入装置

    公开(公告)号：EP1737535A1

    公开(公告)日：2007-01-03

    申请号：EP05734351.9

    申请日：2005-04-08

    申请人： MEDTRONIC, INC.

    发明人： GILLBERG, Jeffrey, M. ,  CAO, Jian

    IPC分类号： A61N1/362

    CPC分类号： A61N1/3622 ,  A61B5/02405 ,  A61B5/0456 ,  A61N1/3702

    摘要： A method and device for generating a template that includes identifying events of a plurality of sensed events having predetermined characteristics as first selected events and generating the template from the first selected events. Events of the plurality of events having the predetermined characteristics are identified as second selected events, and a determination is made as to whether the template is valid in response to the second selected events. The template is updated from the second selected events in response to the template not being valid.