公开(公告)号：EP1032441B1

公开(公告)日：2004-03-03

申请号：EP97949690.8

申请日：1997-11-26

申请人： E-Z-EM, INC.

发明人： ZIMMET, Arthur

IPC分类号： A61M5/168

CPC分类号： A61M5/16836 ,  A61M2005/1588

摘要： The technique for detecting extravasation during the injection of fluid into a patient involves the establishment of a baseline representing impedance at the zone of the injection prior to the injection starting. Extravasation is signaled when at least two characteristics appear. First is that the impedance varies from the baseline more than a predetermined amount in more than a predetermined number of discreet time slots called epochs herein. Second is that, the rate of change of the impedance, which is called the slop herein, is consistently greater than a predetermined amount.

摘要翻译： 在将流体注入患者体内期间检测外渗的技术涉及在注射开始之前建立表示注射区域阻抗的基线。 至少有两个特征出现时，外部信号会发出信号。 首先是阻抗在超过预定数量的本文称为时期的预定数量的离散时隙中从基线变化超过预定量。 其次，阻抗的变化率（在此称为斜率）一直大于预定量。

公开(公告)号：EP1032442A1

公开(公告)日：2000-09-06

申请号：EP97949704.7

申请日：1997-11-26

申请人： E-Z-EM, INC.

发明人： GOODMAN, Jack ,  ZIMMET, Arthur

IPC分类号： A61M5/168

CPC分类号： A61N1/0492 ,  A61B5/04085 ,  A61B5/05 ,  A61B2562/0215 ,  A61M5/16836 ,  A61M5/427 ,  A61N1/0408

摘要： A medical extravasation device has an electrode patch that can attach to the skin for sensing electrical information. Tissue impedance is calculated from the electrode patch signals. The patch has elongate pick-up electrodes inboard of elongate energizing electrodes. The measuring zone determined by the elongate space between the pick-up electrodes enhances sensitivity and specificity. The presence of an extravasation is determined by interpreting the tissue impedance measurement. The method for determining the extravasation includes a first step of determining a pre-injection baseline measurement of the tissue impedance. Then, the tissue impedance is monitored during the procedure itself. A predetermined amount of change in tissue impedance is determined to indicate an extravasation.

公开(公告)号：EP1032442B1

公开(公告)日：2004-03-03

申请号：EP97949704.7

申请日：1997-11-26

申请人： E-Z-EM, INC.

发明人： GOODMAN, Jack ,  ZIMMET, Arthur

IPC分类号： A61M5/168

CPC分类号： A61N1/0492 ,  A61B5/04085 ,  A61B5/05 ,  A61B2562/0215 ,  A61M5/16836 ,  A61M5/427 ,  A61N1/0408

摘要： A medical extravasation device has an electrode patch that can attach to the skin for sensing electrical information. Tissue impedance is calculated from the electrode patch signals. The patch has elongate pick-up electrodes inboard of elongate energizing electrodes. The measuring zone determined by the elongate space between the pick-up electrodes enhances sensitivity and specificity. The presence of an extravasation is determined by interpreting the tissue impedance measurement. The method for determining the extravasation includes a first step of determining a pre-injection baseline measurement of the tissue impedance. Then, the tissue impedance is monitored during the procedure itself. A predetermined amount of change in tissue impedance is determined to indicate an extravasation.

公开(公告)号：EP1032441A1

公开(公告)日：2000-09-06

申请号：EP97949690.8

申请日：1997-11-26

申请人： E-Z-EM, INC.

发明人： ZIMMET, Arthur

IPC分类号： A61M5/168

CPC分类号： A61M5/16836 ,  A61M2005/1588

摘要： The technique for detecting extravasation during the injection of fluid into a patient involves the establishment of a baseline representing impedance at the zone of the injection prior to the injection starting. Extravasation is signaled when at least two characteristics appear. First is that the impedance varies from the baseline more than a predetermined amount in more than a predetermined number of discreet time slots called epochs herein. Second is that, the rate of change of the impedance, which is called the slop herein, is consistently greater than a predetermined amount.

摘要翻译： 在将流体注入患者体内期间检测外渗的技术涉及在注射开始之前建立表示注射区域阻抗的基线。 至少有两个特征出现时，外部信号会发出信号。 首先是阻抗在超过预定数量的本文称为时期的预定数量的离散时隙中从基线变化超过预定量。 其次，阻抗的变化率（在此称为斜率）一直大于预定量。