Which medical product design innovation led to a 70% increase in patient compliance for a chronic condition treatment by addressing the primary user experience barrier?

Medical product design has evolved dramatically over the decades, with certain innovations completely transforming patient care and treatment outcomes. This poll tests your knowledge about a groundbreaking medical device design that changed an entire field of medicine. Consider how design improvements in medical technology can impact not just effectiveness, but also accessibility, patient comfort, and treatment adherence.

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The auto-injector pen for insulin, which replaced traditional syringes with a simpler, less intimidating delivery system
Smart pill bottles that track medication adherence through wireless connectivity and reminder systems
Continuous glucose monitors that eliminated the need for regular finger-prick blood testing
Inhaled insulin formulations that provided needle-free diabetes management options