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    • 5. 发明申请
    • IMPLANTABLE MEDICAL DEVICE WITH AUTOMATIC SENSING THRESHOLD ADJUSTMENT IN NOISY ENVIRONMENT
    • 具有噪音环境自动感应阈值调节的可植入医疗器械
    • US20120277606A1
    • 2012-11-01
    • US13096328
    • 2011-04-28
    • Michael L. EllingsonPatrick L. ParishHyun J. Yoon
    • Michael L. EllingsonPatrick L. ParishHyun J. Yoon
    • A61B5/0402
    • A61N1/3704A61N1/3718
    • An implantable medical system includes an implantable medical lead including at least one electrode and an implantable medical device (IMD) coupled to the implantable medical lead. The IMD includes a sensing module that obtains electrical signals on the implantable medical lead. The electrical signals on the implantable medical lead include cardiac signals as well as noise-induced signals. The IMD also includes a noise detection module that obtains noise signals independently of the electrical signals on the implantable medical lead. A control module of the IMD adjusts a sensing threshold of the sensing module in response to detecting the noise signals via the noise detection module. In instances in which the amplitude of the noise-induced signal on the lead is too large, the IMD may transition to a noise operating mode specifically designed to accommodate noisy environments.
    • 可植入医疗系统包括可植入医疗引线,其包括耦合到可植入医疗引线的至少一个电极和可植入医疗装置(IMD)。 IMD包括获取可植入医疗引线上的电信号的感测模块。 可植入医疗用引线上的电信号包括心脏信号以及噪声引起的信号。 IMD还包括噪声检测模块,其独立于可植入医疗引线上的电信号获得噪声信号。 响应于通过噪声检测模块检测到噪声信号,IMD的控制模块调节感测模块的感测阈值。 在引线上的噪声感应信号的幅度太大的情况下,IMD可能转变为专门设计成适应噪声环境的噪声工作模式。
    • 7. 发明授权
    • Pacing in the presence of electromagnetic interference
    • 在存在电磁干扰的情况下起搏
    • US08433408B2
    • 2013-04-30
    • US13095076
    • 2011-04-27
    • Michael L. EllingsonHyun J. YoonPatrick L. Parish
    • Michael L. EllingsonHyun J. YoonPatrick L. Parish
    • A61N1/00
    • A61N1/3718
    • This disclosure provides a pacing technique that reduces the effect of oversensing caused by noise on pacing therapy. The IMD delivers a pacing pulse subsequent to sensing an electrical signal on the lead when the sensed electrical signal coincides with an independently detected noise signal and the sensed electrical signal occurs during a period of time of an expected intrinsic cardiac signal. The IMD may, in some instances, trigger delivery of the pacing pulse during the escape interval instead of waiting for the escape interval to expire. Pacing in accordance with the techniques of this disclosure may allow for improved therapy during an MRI procedure by decreasing the risk associated with inappropriate pacing inhibition as well as decreasing the risk associated with pacing during the vulnerable period of the cardiac cycle.
    • 本公开提供了一种起搏技术,其降低由噪声引起的过度起搏对起搏治疗的影响。 当感测到的电信号与独立检测到的噪声信号一致时,IMD在检测到引线上的电信号之后提供起搏脉冲,并且所感测到的电信号在期望的内在心脏信号的时间段期间发生。 在某些情况下,IMD可以在逃避间隔期间触发起搏脉冲的输送,而不是等待逃逸间隔期满。 根据本公开的技术的起搏可以允许在MRI过程期间通过降低与不适当的起搏抑制相关的风险以及降低在心动周期的易受伤期期间与起搏相关的风险来改善治疗。
    • 8. 发明申请
    • PACING IN THE PRESENCE OF ELECTROMAGENTIC INTERFERENCE
    • 电磁干扰存在
    • US20120277817A1
    • 2012-11-01
    • US13095076
    • 2011-04-27
    • Michael L. EllingsonHyun J. YoonPatrick L. Parish
    • Michael L. EllingsonHyun J. YoonPatrick L. Parish
    • A61N1/365
    • A61N1/3718
    • This disclosure provides a pacing technique that reduces the effect of oversensing caused by noise on pacing therapy. The IMD delivers a pacing pulse subsequent to sensing an electrical signal on the lead when the sensed electrical signal coincides with an independently detected noise signal and the sensed electrical signal occurs during a period of time of an expected intrinsic cardiac signal. The IMD may, in some instances, trigger delivery of the pacing pulse during the escape interval instead of waiting for the escape interval to expire. Pacing in accordance with the techniques of this disclosure may allow for improved therapy during an MRI procedure by decreasing the risk associated with inappropriate pacing inhibition as well as decreasing the risk associated with pacing during the vulnerable period of the cardiac cycle.
    • 本公开提供了一种起搏技术,其降低由噪声引起的过度起搏对起搏治疗的影响。 当感测到的电信号与独立检测到的噪声信号一致时,IMD在检测到引线上的电信号之后提供起搏脉冲,并且所感测到的电信号在期望的内在心脏信号的时间段期间发生。 在某些情况下,IMD可以在逃避间隔期间触发起搏脉冲的输送,而不是等待逃逸间隔期满。 根据本公开的技术的起搏可以允许在MRI过程期间通过降低与不适当的起搏抑制相关的风险以及降低在心动周期的易受伤期期间与起搏相关的风险来改善治疗。