Design and Testing of a Transcutaneous RF Recharging System for a Fetal Micropacemaker

作者：Vest Adriana N^*; Zhou Li; Huang Xuechen; Norekyan Viktoria; Bar Cohen Yaniv; Chmait Ramen H; Loeb Gerald Eli

来源：IEEE Transactions on Biomedical Circuits and Systems, 2017, 11(2): 336-346.

DOI：10.1109/TBCAS.2016.2620805

• Inductive recharging
• pacemakers

We have developed a rechargeable fetal micropacemaker in order to treat severe fetal bradycardia with comorbid hydrops fetalis. The necessarily small form factor of the device, small patient population, and fetal anatomy put unique constraints on the design of the recharging system. To overcome these constraints, a custom high power field generator was built and the recharging process was controlled by utilizing pacing rate as a measure of battery state, a feature of the relaxation oscillator used to generate stimuli. The design and in vitro and in vivo verification of the recharging system is presented here, showing successful generation of recharging current in a fetal lamb model.

• 出版日期2017-4