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Technology

Flexible needle goes soft after injections for safety and comfort

Needles and catheters can irritate the body and may pose a risk to others if not properly disposed of, but a flexible alternative made from gallium solves both problems

By Alex Wilkins

16 November 2023

The gallium needle bends in response to human body temperature

Karen-Christian Agno et al. (2023)

A needle that softens and becomes flexible when it enters the body could reduce inflammation and damage during injections, while also reducing the risk of accidental pricks.Ìý

Needles and plastic catheters frequently cause inflammation and complications when injected, partly because they are not as flexible as the body’s soft tissue and veins. Used needles can also risk spreading disease if a medical professional is accidentally pricked with one after use.Ìý

As an alternative, at the Korea Advanced Institute of Science and…

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