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目的 針對(duì)人體腸道內(nèi)微型診療系統(tǒng)能量供應(yīng)問(wèn)題，研究了一種基于電磁耦合的無(wú)線能量傳輸系統(tǒng)，并對(duì)其產(chǎn)生的生物電磁效應(yīng)進(jìn)行分析。方法 圍繞在人體腹部的發(fā)射線圈產(chǎn)生的交變磁場(chǎng)，體內(nèi)微小線圈產(chǎn)生感應(yīng)電動(dòng)勢(shì)為腸內(nèi)診療系統(tǒng)提供電能。為了研究電磁場(chǎng)在人體組織產(chǎn)生的生物效應(yīng)，本文首先采用圖像分割技術(shù)對(duì)人體橫斷面圖像進(jìn)行組織識(shí)別，建立了包含56種組織的高精度三維真實(shí)人體數(shù)字化模型，然后通過(guò)數(shù)值計(jì)算的方法研究了能量傳輸系統(tǒng)的生物電磁效應(yīng)。結(jié)果 獲得電流密度、比吸收率、磁場(chǎng)強(qiáng)度在人體的分布，以及不同頻率下全身平均比吸收率。結(jié)論 生物電磁效應(yīng)的研究為無(wú)線供能技術(shù)在人體腸道診療系統(tǒng)的應(yīng)用奠定了生物安全性基礎(chǔ)。

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