An intravenous needle that irreversibly softens via body temperature on insertion

Intravenous (IV) injection is a common route for medical treatment worldwide as it induces rapid effects and allows continuous administration of medication by directly injecting drugs into the blood vessel. However, medical IV needles, made of hard materials such as stainless steel or plastic that do not mechanically match the soft biological tissues of the body, can cause critical problems in health care settings, starting from minor tissue damages in the injection sites to serious inflammation.