exiles

Throughout the eighties and nineties, even as he helped with the HeartMate and AbioCor, Frazier argued that engineers should shift from pulsatile pump designs to ones based on the more mechanically straightforward principle of “continuous flow”—the strategy that Bivacor later adopted. Some researchers argued that the circulatory system might benefit from the pulse; there’s evidence that blood-vessel walls expand in response to a quickening beat ...