Which of these medical product launches actually occurred exactly as described?

The healthcare industry constantly evolves with groundbreaking product launches that transform patient care. Some medical innovations become industry standards while others fail despite promising beginnings. This poll tests your knowledge of significant medical product launches that shaped modern healthcare practices. Can you identify which revolutionary product launch actually happened as described?

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The FDA approved Medtronic's artificial pancreas system in 2016, becoming the first closed-loop system that automatically monitors glucose and delivers insulin with minimal user intervention.
Johnson & Johnson launched the world's first injectable AI nanobots in 2019 that could target and eliminate cancer cells with 98% precision while leaving healthy cells untouched.
Pfizer released Memorex in 2018, the first FDA-approved pharmaceutical treatment clinically proven to reverse early-stage Alzheimer's disease in 65% of patients.
Mayo Clinic and Google jointly released MediScan in 2020, a smartphone app that uses the camera to diagnose skin conditions with accuracy equivalent to board-certified dermatologists.