The Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but does not cause damage when removed. (Source: The Karp Lab/Brigham and Women’s Hospital)
Chuck, I know it seems counterintuitive, but the tiny plastic hooks are so small and flexible/soft that they're supposed to be painless. The whole point of the device is adhering to wounds while not causing pain and then being easy to take off when not engorged with fluid.
Most of the new 3D printers and 3D printing technologies in this crop are breaking some boundaries, whether it's build volume-per-dollar ratios, multimaterials printing techniques, or new materials types.
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