公开(公告)号：US09452292B2

公开(公告)日：2016-09-27

申请号：US14261776

申请日：2014-04-25

Applicant: Medtronic, Inc.

Inventor： Wade M Demmer ,  Douglas A Peterson

IPC: A61N1/00 ,  A61N1/37 ,  A61B5/0452 ,  A61N1/375 ,  A61N1/362 ,  A61N1/365 ,  A61B17/00

CPC classification number: A61N1/3702 ,  A61B5/04525 ,  A61B2017/00203 ,  A61N1/3622 ,  A61N1/3624 ,  A61N1/365 ,  A61N1/371 ,  A61N1/3712 ,  A61N1/3756

Abstract: A method and apparatus for determining stability of a patient's intrinsic rhythm in a cardiac pacing device. Cardiac pacing pulses are delivering to a chamber of a patient's heart by the pacing device at a first pulse amplitude. The device measures a first series of intervals between successive sensed and paced events. The device then determines whether the first measured series of intervals meets a stability criterion. Responsive to the first measured series of intervals failing to meet the stability criterion, the device determines whether the first measured series of intervals includes an interval between a delivered pacing pulse and a sensed event that is less than a defined duration. Responsive to the interval between a delivered pacing pulse and a sensed event being less than the defined duration, the device delivers cardiac pacing pulses to the chamber of a patient's heart at a second pulse amplitude and measures a second series of intervals between successive sensed and paced events and determines whether the second measured series of intervals meets the stability criterion.

Abstract translation: 一种用于确定心脏起搏装置中患者内在节律的稳定性的方法和装置。 心脏起搏脉冲通过起搏装置以第一脉冲幅度递送到患者心脏的室。 该装置测量连续感测和起搏事件之间的第一系列间隔。 然后，设备确定第一测量的间隔序列是否满足稳定性标准。 响应于不能满足稳定性标准的第一测量系列的间隔，该装置确定第一测量的间隔序列是否包括传递的起搏脉冲和小于所定义持续时间的感测事件之间的间隔。 响应于所输送的起搏脉冲和感测到的事件之间的间隔小于所定义的持续时间，该装置以第二脉冲幅度将心脏起搏脉冲递送到患者心脏的腔室，并且测量连续感测和起搏之间的第二系列间隔 并确定第二个测量的间隔序列是否满足稳定性标准。

公开(公告)号：US09724518B2

公开(公告)日：2017-08-08

申请号：US14552758

申请日：2014-11-25

Applicant: Medtronic, Inc.

Inventor： Todd J Sheldon ,  Wade M Demmer ,  Karen J Kleckner ,  Douglas A Peterson ,  Paul R Solheim

IPC: A61N1/08 ,  A61N1/365 ,  A61N1/36

CPC classification number: A61N1/36542 ,  A61N1/36128 ,  A61N1/36135 ,  A61N1/36585

Abstract: An implantable medical device includes an activity sensor, a pulse generator, and a control module. The control module is configured to determine activity metrics from the activity signal and determine an activity metric value at a predetermined percentile of the activity metrics. The control module sets a lower pacing rate set point based on the activity metric value at the predetermined percentile.

公开(公告)号：US09308376B2

公开(公告)日：2016-04-12

申请号：US14248646

申请日：2014-04-09

Applicant: Medtronic, Inc.

Inventor： Wade M Demmer ,  Douglas A Peterson

IPC: A61B5/04 ,  A61N1/37 ,  A61N1/39 ,  A61N1/362 ,  A61N1/372

CPC classification number: A61N1/3712 ,  A61N1/362 ,  A61N1/371 ,  A61N1/37205 ,  A61N1/3943 ,  A61N1/3956

Abstract: A method and apparatus for identifying loss of capture in a pacing device. While pacing pulses are being delivered, the device checks for emergence of a stable asynchronous underlying intrinsic rhythm in the presence of the delivered pacing pulses. The device determines that loss of capture has occurred responsive to emergence of the underlying rhythm. In response to determining that loss of capture has occurred, pacing provided by device is modified, for example by performing a threshold test and adjusting the energy levels of delivered pacing pulses in response thereto.

Abstract translation: 一种用于识别起搏装置中的捕获损失的方法和装置。 在进行起搏脉冲的同时，器件会在出现的起搏脉冲存在的情况下检查稳定的异步潜在内在节律的出现。 该装置确定捕获的丢失是否响应于潜在节奏的出现而发生。 为了响应于确定已经发生捕获的丢失，例如通过执行阈值测试并且响应于此调整发送的起搏脉冲的能量水平来修改由设备提供的起搏。