Output Power Computation and Adaptation Strategy of an Electrosurgery Inverter for Reduced Collateral Tissue Damagehttps://www.embs.org/tbme/wp-content/uploads/sites/19/2023/05/TBME-01510-2022-Website-Image-Resized.gif710400IEEE Transactions on Biomedical Engineering (TBME)IEEE Transactions on Biomedical Engineering (TBME)//www.embs.org/tbme/wp-content/uploads/sites/19/2022/06/ieee-tbme-logo2x.png
This paper details two power-computation approaches for an electrosurgical inverter involving high-frequency and nonlinearly distorted outputs, and presents the impedance-based power-adaptation strategy that may motivate further research towards zero-collateral-damage electrosurgery.
Author(s)3: Vahid Farmehini, Walter Varhue, Armita Salahi, Alexandra R. Hyler, Jaka Čemažar, Rafael Davalos, Nathan S. Swami
On-Chip Impedance Quantification of Parasitic Voltages During AC Electrokinetic Trappinghttps://www.embs.org/tbme/wp-content/uploads/sites/19/2020/05/TBME-00582-2019-Highlight-Image.jpg170177IEEE Transactions on Biomedical Engineering (TBME)IEEE Transactions on Biomedical Engineering (TBME)//www.embs.org/tbme/wp-content/uploads/sites/19/2022/06/ieee-tbme-logo2x.png
Monitoring the effectiveness and location of cell or particle trapping under microfluidic force fields is currently achieved by cumbersome imaging methods that require extensive microscopy to be conducted by a trained operator, with limited ability to rapidly trigger downstream decisions. We present an embedded circuit for an impedance sensor that directly interfaces to a microfluidic chip for the monitoring of cell or particle trapping based on the level and frequency response of parasitic voltage drops measured during AC electrokinetic manipulation, to enable assessment of trapping efficacy of the device geometry and to rapidly inform downstream cell separation decisions.
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