| 摘要 |
A defibrillator connected by catheters ( 7 ) to the heart ( 6 ) has an external circuit ( 2, 12 ) connected to a passive implanted circuit ( 5 ) by transdermal induction via voils ( 3, 4 ). For atrial defibrillation, pulses of 3-4 J can be transmitted at about 7 MHz without damage, using an implanted coil ( 4 ) of 20 mm diameter.
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