The main purpose of drug delivery is to increase the amount of drug delivery, improve bioavailability, increase the targeting effect, and reduce toxic side effects.
Imaging is mainly aimed at the development of novel imaging techniques, as well as the improvement and development of contrast agents.
Detection is mainly aimed at simplifying existing operations, simplifying diagnostic markers, improving sensitivity and confidence, and providing new means of detection.
Devices are mainly aimed at the development of embedded or implantable devices, miniaturization and improved integration, and the development of nanorobots. However, this part is relatively new, and no breakthroughs have been seen yet. The existing level is still mainly to do some detection work in vitro, and only a small part of it has been developed as smart hardware.
Tissue engineering is an old field of biomaterials in the past, and now both material and biological are involved, trauma repair, development of new implant materials, as well as the surface modification of the implant, are doing better. The other is the development of artificial organs, and the complete in vitro organ reconstruction that may be possible with the introduction of 3D printing, which is now a concept but conceivably already being done by a number of people.
Nanomaterials make it easy to integrate and miniaturize functions, which, to be more specific, means that stages that were uncontrollable and invisible in the past can be made as controllable as possible and visualized. The medicine is still the same, but it's just as effective as wearing underwear to become Superman, or using magic after dressing up in Cos.