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    • 2. 发明授权
    • Removing artifact in evoked compound action potential recordings in neural stimulators
    • 在神经刺激器中诱发复合动作电位记录中去除伪影
    • US07835804B2
    • 2010-11-16
    • US11734233
    • 2007-04-11
    • Gene Yevgeny FridmanRankiri Tissa Karunasiri
    • Gene Yevgeny FridmanRankiri Tissa Karunasiri
    • A61N1/05
    • A61B5/04001A61B5/04012A61B5/053A61B5/4041A61B5/7217A61N1/36036
    • The accuracy of neural response recordings in neural stimulators, e.g., cochlear implants, is often degraded by a recording artifact. An idealized electrical-equivalent model of a neural stimulator is created to study, measure and compensate for artifact evoked compound action potential (eCAP). Using this model, the artifact is shown to occur even when the electrical components that make-up the neural stimulator are ideal. The model contains parasitic capacitances between the electrode wires. The model demonstrates that these small parasitic capacitances provide a current path during stimulation which can deposit charge on the electrode-tissue interfaces of the recording electrodes. The dissipation of this residual charge and the charge stored across the stimulating electrode is seen as the recording artifact. The proposed solution for eliminating the artifact problem is realized by utilizing a capacitive electrode material, e.g., TiO2, Ta2O5, or other dielectric coatings or films, instead of Faradaic electrode material, e.g., Platinum (Pt), Pt—Ir alloy or similar alloys, on the neural stimulator electrode lead.
    • 神经刺激器(例如人工耳蜗植入物)中的神经反应记录的准确性常常被记录伪像降解。 创建神经刺激器的理想电气等效模型,以研究,测量和补偿伪影诱发复合动作电位(eCAP)。 使用该模型,即使构成神经刺激器的电气部件是理想的,该伪像也会发生。 该模型包含电极线之间的寄生电容。 该模型证明这些小的寄生电容在刺激期间提供电流路径,其可以将电荷沉积在记录电极的电极 - 组织界面上。 这种剩余电荷的耗散和刺激电极两端的电荷被看作是记录伪影。 用于消除伪影问题的所提出的解决方案是通过利用电容电极材料,例如TiO 2,Ta 2 O 5或其它电介质涂层或膜来代替法拉第电极材料,例如铂(Pt),Pt-Ir合金或类似合金 ,在神经刺激器电极引线上。
    • 6. 发明申请
    • Removing Artifact in Evoked Compound Action Potential Recordings in Neural Stimulators
    • 在神经刺激器中诱发复合动作电位记录中去除人工神经
    • US20070244410A1
    • 2007-10-18
    • US11734233
    • 2007-04-11
    • Gene Yevgeny FridmanRankiri Tissa Karunasiri
    • Gene Yevgeny FridmanRankiri Tissa Karunasiri
    • A61B5/05
    • A61B5/04001A61B5/04012A61B5/053A61B5/4041A61B5/7217A61N1/36036
    • The accuracy of neural response recordings in neural stimulators, e.g., cochlear implants, is often degraded by a recording artifact. An idealized electrical-equivalent model of a neural stimulator is created to study, measure and compensate for artifact evoked compound action potential (eCAP). Using this model, the artifact is shown to occur even when the electrical components that make-up the neural stimulator are ideal. The model contains parasitic capacitances between the electrode wires. The model demonstrates that these small parasitic capacitances provide a current path during stimulation which can deposit charge on the electrode-tissue interfaces of the recording electrodes. The dissipation of this residual charge and the charge stored across the stimulating electrode is seen as the recording artifact. The proposed solution for eliminating the artifact problem is realized by utilizing a capacitive electrode material, e.g., TiO2, Ta2O5, or other dielectric coatings or films, instead of Faradaic electrode material, e.g., Platinum (Pt), Pt—Ir alloy or similar alloys, on the neural stimulator electrode lead.
    • 神经刺激器(例如人工耳蜗植入物)中的神经反应记录的准确性常常被记录伪像降解。 创建神经刺激器的理想电气等效模型,以研究,测量和补偿伪影诱发复合动作电位(eCAP)。 使用该模型,即使构成神经刺激器的电气部件是理想的,该伪像也会发生。 该模型包含电极线之间的寄生电容。 该模型证明这些小的寄生电容在刺激期间提供电流路径,其可以将电荷沉积在记录电极的电极 - 组织界面上。 这种剩余电荷的耗散和刺激电极两端的电荷被看作是记录伪影。 用于消除伪影问题的所提出的解决方案是通过使用电容电极材料,例如TiO 2 2,Ta 2 O 5或其它 电介质涂层或膜,代替法拉第电极材料,例如铂(Pt),Pt-Ir合金或类似合金,在神经刺激电极引线上。