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日益广泛应用的植入式电刺激装置通常应用感应耦合射频线圈系统.由于人体体表几何形状不同,体外线圈不可避免地要发生位置失配。还未见到从几何空间和电路设计角度同时对这种失配所引起的传送效率降低进行详细分析.本文分析了原线圈的四种情况.①理想配置;两线圈的平面相互平行,两圆心在同一垂直轴线上;②侧失配;两线圈的平面保持平行,但原线圈的圆心发生侧位移.③
The increasingly widespread application of implantable electrical stimulation devices typically uses inductively coupled radiofrequency coil systems.As the body surface geometry varies, in vitro coils inevitably suffer from positional mismatch. It has not yet been observed that the transmission efficiency reduction caused by this mismatch is analyzed in detail from the perspective of geometrical space and circuit design. In this paper, four cases of the primary coil are analyzed. ① The ideal configuration; the planes of the two coils are parallel to each other, In the same vertical axis; ② mismatch; the plane of the two coils remain parallel, but the lateral displacement of the center of the original coil ③