What characteristic defined Liotta's pneumatic model compared to modern VADs?
Answer
Required external power and control systems
Liotta's pneumatic model for the artificial heart necessitated external power and control systems because it operated via air pressure driving the pumping mechanism. This stood in stark contrast to the engineering advancements seen in modern ventricular assist devices (VADs), which are typically electric and battery-powered, allowing for greater portability and integration within the body. The requirement for external apparatus for the pneumatic system underscores how much the engineering sophistication evolved from the initial proof of concept to the more refined, self-contained circulatory support solutions available today.
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