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    • 2. 发明申请
    • MEASURING HUMAN HEART MUSCLE VIABILITY USING MYOCARDIAL ELECTRICAL IMPEDANCE
    • 使用MYOCARDIAL电气阻抗测量人体心脏肌肉功能
    • WO2004105862A3
    • 2005-03-03
    • PCT/US2004017224
    • 2004-05-28
    • UNIV OHIO STATEDZWONCZYK ROGER RDEL RIO CARLOS LMCCONNELL PATRICK IHOWIE MICHAEL B
    • DZWONCZYK ROGER RDEL RIO CARLOS LMCCONNELL PATRICK IHOWIE MICHAEL B
    • A61B5/05A61B5/053A61N20060101
    • A61B5/053A61B5/413
    • A method for detecting a quantitative measure of a physiologic state of a myocardium or coronary artery by detecting the extent of change of myocardial electrical impedance from a mean baseline value to provide diagnosis of the extent of ischemia, stenosis, tissue rejection, reperfusion and the effectiveness of cardioplegia . Electrodes (16,18) are attached to the myocardium (14), baseline measurements of the mean myocardial impedance are stored, and the variance of the myocardial electrical impedance and a baseline value of mean myocardial electrical impedance are computed from the baseline measurements using custom circuitry (12) and a computer (10). After a mean myocardial electrical impedance changes from a computed baseline value by at least the measured variance, the extent of change in the myocardial physiologic state is diagnosed as a continuous, smooth, function of the extent or rate of change of a periodically measured myocardial electrical impedance from the baseline value.
    • 通过从平均基线值检测心肌电阻抗的变化程度来检测心肌或冠状动脉的生理状态的定量测量的方法,以提供缺血,狭窄,组织排斥,再灌注和有效性的程度的诊断 的心脏停跳。 电极(16,18)连接到心肌(14),存储平均心肌阻抗的基线测量,并且使用定制从基线测量计算心肌电阻抗的方差和平均心肌电阻抗的基线值 电路(12)和计算机(10)。 在平均心肌电阻抗从计算基线值至少改变测量方差之后,心肌生理状态的变化程度被诊断为周期性测量的心肌电气的变化程度或速率的连续,平滑的功能 阻抗从基线值。
    • 3. 发明申请
    • MEASURING HUMAN HEART MUSCLE VIABILITY USING MYOCARDIAL ELECTRICAL IMPEDANCE
    • 使用MYOCARDIAL电气阻抗测量人体心脏肌肉功能
    • WO2004105862A2
    • 2004-12-09
    • PCT/US2004/017224
    • 2004-05-28
    • THE OHIO STATE UNIVERSITYDZWONCZYK, Roger, R.DEL RIO, Carlos, L.MCCONNELL, Patrick, I.HOWIE, Michael, B.
    • DZWONCZYK, Roger, R.DEL RIO, Carlos, L.MCCONNELL, Patrick, I.HOWIE, Michael, B.
    • A61N
    • A61B5/053A61B5/413
    • A method for detecting a quantitative measure of a physiologic state of a human myocardium or coronary artery. Implementations of the method detect the extent of change of myocardial electrical impedance from a mean baseline value to provide diagnosis of the extent of ischemia, stenosis, tissue rejection, and reperfusion and the effectiveness of cardioplegia and ischemia preconditioning as well as the general effectiveness of coronary bypass surgery as measured by post-operative reperfusion. Electrodes are attached to the myocardium, baseline measurements of the mean myocardial electrical impedance are stored and the variance of the myocardial electrical impedance and a baseline value of mean myocardial electrical impedance are computed from the baseline measurements and stored. Mean myocardial electrical impedance values are periodically measured between each electrode pair over an interval of time and stored. After the mean myocardial electrical impedance changes from the computed baseline value by at least the measured variance, the extent of change in the myocardial physiologic state is diagnosed as a continuous, smooth, function of the extent of change, or rate of change, of the periodically measured myocardial electrical impedance from the baseline value.
    • 一种用于检测人心肌或冠状动脉的生理状态的定量测量的方法。 该方法的实施方法从平均基线值检测心肌电阻抗的变化程度,以提供缺血,狭窄,组织排斥和再灌注程度的诊断以及心脏停搏和缺血预处理的有效性以及冠状动脉的一般功效 旁路手术按术后再灌注测量。 电极连接到心肌,存储平均心肌电阻抗的基线测量,并从基线测量计算心肌电阻抗的方差和平均心肌电阻抗的基线值,并存储。 在一段时间间隔内,在每个电极对之间周期性地测量平均心肌电阻抗值并存储。 在平均心肌电阻抗从计算基线值至少改变测量方差之后,心肌生理状态的变化程度被诊断为变化程度或变化率的连续,平滑的功能 从基线值定期测量心肌电阻抗。