Which medical product design innovation significantly reduced infection rates in central venous catheters by addressing a fundamental usage flaw?

Medical product design requires balancing functionality, safety, and usability while meeting strict regulatory requirements. Innovative designs can dramatically improve treatment outcomes and patient experiences. This poll tests your knowledge about a revolutionary product design innovation that transformed a common medical procedure. Consider how design thinking in medicine has evolved to address both clinical needs and human factors.

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The ChloraLock, a disinfecting cap system that ensures sterility of catheter hubs when not in use
The FloGuide, a ultrasound-guided insertion device that improves placement accuracy
The VeinSight, an infrared vein visualization system for easier catheter insertion
The PressureSeal, a mechanical valve that prevents backflow of blood during connection changes