Porcupine Quills Inspire Better Needles For Medical Devices

Biomimicry and bio-inspiration: Inventions based on geckos, lotus, porcupine, parasites.

More Than Sharp: The Science of Porcupine Quills

Dogs and Porcupines: Quill Removal, First-Aid, and Training

Barbs make porcupine quills into nasty needles : Nature News & Comment

How porcupine quills work : r/Damnthatsinteresting

Medical Needles That Easily Penetrate Skin Could Be Inspired By Prickly Porcupine

Porcupine-Inspired Needles

Porcupine Barbs For Better Wound Healing

The Porcupine's Quill