Skin stem cells are highly proliferative cells, which are abundant in human hair follicles. When the skin is damaged and the wound is large or difficult to heal, such as the skin injury of diabetic patients, the use of hair follicle stem cells with strong proliferative ability can help repair and heal the damaged wound. The team previously found that nano-materials have a good effect on vascular repair of skin wounds. Stem cells-nanomaterials are developed by combining stem cells' repairing ability with new nanomaterials. Band-aid? . Different from the weak function of traditional band-aid in promoting wound healing, the nanofibers in the new material are thinner than one thousandth of hair filaments and are highly similar to the extracellular matrix structure. This kind of superfine nanofiber can be obtained by electrospinning.

Generally speaking, the application scope of band-aid is not wide. Band-AIDS are suitable for small wounds, mainly cuts, when people's skin is accidentally injured. Generally speaking, the wound should meet the following conditions:

Neat: not suitable for jagged teeth.

Cleanliness addiction: it is not good to have blood and dirt, and it is not good to have secretions.

surface

Smaller: the cover is too long and there is a side leak!

For the following kinds of wounds, it is not suitable to use band-aid (keep it in mind! ):

a.？ There is a foreign body in the wound, which must be removed.

b.？ Accidental injury by nails: tetanus vaccine should be given instead of band-aid to prevent wound infection (which will be discussed later)

c.？ Scratched or bitten by cats and dogs: rabies vaccine is needed, but band-aid cannot be used to expose the wound to prevent infection.

d.？ Scalding: Scalding leads to broken skin and running water, and band-aid cannot be used to prevent infection caused by secretion loss.

But stem cell band-aid is different from ordinary band-aid. The research team of Qingdao University has developed a magic that can realize rapid regeneration and repair of wound skin? Band-aid? Technology, 4D printed stem cell carrier. For a large area of skin burn or erosion, skin grafting is not needed. Use this? Band-aid? Release stem cells? Stick it up? It can realize the rapid regeneration and repair of traumatic skin. This technology has obtained a number of patents, and is currently undergoing the second phase of clinical trials, which is expected to be transformed into the market in the near future.