Which design innovation was MOST crucial in transforming the pulse oximeter from a bulky hospital-only device to the small finger clip version widely used today?

Modern medical devices are essential tools that can save lives, but their development often involves fascinating design challenges and innovations. The pulse oximeter, now ubiquitous in healthcare settings, represents a significant achievement in non-invasive monitoring technology. This poll tests your knowledge about the design evolution of this critical medical product that revolutionized patient monitoring. How much do you know about the product design journey that made this life-saving technology accessible and user-friendly?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The development of LED light sources that could emit both red and infrared light from a single component
The introduction of Bluetooth connectivity to transmit readings wirelessly
The addition of color displays to show oxygen saturation levels visually
The incorporation of rechargeable lithium-ion batteries