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    • 7. 发明授权
    • Method and apparatus for pacing safety margin
    • 起搏安全幅度的方法和装置
    • US08565879B2
    • 2013-10-22
    • US13071680
    • 2011-03-25
    • Amy Jean BrisbenShibaji ShomeKenneth N. HayesYanting DongAaron R. McCabeScott A. MeyerKevin John Stalsberg
    • Amy Jean BrisbenShibaji ShomeKenneth N. HayesYanting DongAaron R. McCabeScott A. MeyerKevin John Stalsberg
    • A61N1/08
    • A61N1/36585A61N1/3712
    • An apparatus comprises a cardiac signal sensing circuit, a pacing therapy circuit, and a controller circuit. The controller circuit includes a safety margin calculation circuit. The controller circuit initiates delivery of pacing stimulation energy to the heart using a first energy level, changes the energy level by at least one of: a) increasing the energy from the first energy level until detecting that the pacing stimulation energy induces stable capture, or b) reducing the energy from the first energy level until detecting that the stimulation energy fails to induce capture, and continues changing the stimulation energy level until confirming stable capture or the failure of capture. The safety margin calculation circuit calculates a safety margin of pacing stimulation energy using at least one of a determined stability of a parameter associated with evoked response and a determined range of energy levels corresponding to stable capture or intermittent failure of capture.
    • 一种装置包括心脏信号感测电路,起搏治疗电路和控制器电路。 控制器电路包括安全裕度计算电路。 控制器电路使用第一能级开始向心脏传送起搏刺激能量,通过以下至少一种来改变能量水平:a)从第一能量级增加能量直到检测到起搏刺激能量引起稳定的捕获,或 b)减少来自第一能级的能量,直到检测到刺激能量不能诱导捕获,并且继续改变刺激能量水平,直到确认捕获稳定或捕获失败为止。 安全裕度计算电路使用与诱发反应相关联的参数的确定的稳定性以及与捕获的稳定捕获或间歇性故障相对应的能量水平的确定范围中的至少一个来计算起搏刺激能量的安全裕度。