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As with Dr Echt's design, power constraints mean that this approach can be used only for pacing.
ECONOMIST: Case history
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This method also has the advantage that the placement of the receiver allows the pacing of the heart to be very precisely controlled, says Dr Echt.
ECONOMIST: Case history
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They have names like Bullet Tooth Tony (Vinnie Jones) and Brick Top (Alan Ford), and they converse in the artful patois that Ritchie continues to sell as echt.
NEWYORKER: Snatch
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It is similar to Dr Echt's leadless pacemaker, but it uses electromagnetic induction, rather than ultrasound, to stimulate a small implanted receiver, which in turn stimulates the heart.
ECONOMIST: Case history