2. Treatment methods: ① American nano-traceless trephine microdissection, ② American nano-traceless trephine microdissection, ③ American nano-traceless trephine microdissection.
3. Technical introduction
(1) technical principle
① Principle of American Nano-Traceless trephine microtome: American Nano-Traceless trephine microtome (PE) is a method of scar repair, which uses a trephine biopsy instrument (FUE) with a diameter equal to or slightly larger than the scar to cut the tissue to the subcutaneous fat layer and remove the scar. After resection, the defect was sutured intermittently with minimally invasive suture (purse string suture), and the suture was removed after 7 days. When trephination is used, the distance between scars needs to be 4 ~ 5 mm If they are too close together, the skin will shrink excessively when sewing. For scars that are close to each other, each scar can be excised by trephine every 4 weeks. When the scar needs to be removed with a trephine larger than 3.5mm, spindle-shaped resection or trephine elevation should be adopted to avoid the formation of broken corners due to too many defects. Because absorbable thread is easy to cause scar and inflammatory reaction, non-absorbable thread (nylon thread) should be used for suture. After suture, cgf was injected under the wound to promote healing and prevent scar formation. The new linear pink scar formed by surgery will fade with time, not as obvious as the original scar, and can be repaired by laser in the later stage.
Pocket stitch: also known as pocket stitch, just like the lace around the pouch of a cigarette bag. The method is to sew continuously around the opening, tighten the suture and knot, and at the same time turn the tissue or stump inward from the purse. Mainly used for embedding, which can reduce pollution, promote healing and keep the exposed surface smooth. It is suitable for the suture of large holes after drilling in dermatology.
② The principle of American nano-traceless trephine microscopy: it is an important part of nano-traceless trephine microscopy, and is mainly suitable for relatively flat scars. The trephine is used to cut scar tissue intermittently, and at the same time, normal skin tissue is drilled from the donor site with the same trephine (after ear removal), and finally it is filled into the original scar, which is called trephine transplantation. trephine transplantation is usually not used alone. However, after the normal skin is removed, the preventive treatment for scars will not leave scars.
Surgical steps: trepanning scar tissue-filling-crushing -CGF with postoperative (behind the ear) micro-tissue compound or applying epidermal growth factor to the wound surface.
③ American nano-traceless trephine microextraction (drilling but not taking): American nano-traceless trephine (PE) microextraction is suitable for shallow box-shaped scars and deep box-shaped scars with sharp edges and normal bases, and is often used in combination with trephine excision and skin grafting, and the trephine size should match the inner diameter of skin lesions. Carefully lift the tissue slightly above the surrounding skin. During the healing process, the raised tissue will contract, flattening the skin surface. After the operation, it can be fixed with tension and glue, or it can be directly bonded with leather stickers.
? Circular saw lifting is a combination of circular saw removal and circular saw transplantation. The trephine is used to loosen and lift the sunken scar from the base, and its height is slightly higher than the surrounding skin, which is suitable for sunken scars. During the healing process, the separated tissues can contract, making the skin surface smooth.
[2] Indications
? ① trephine minimally invasive surgery is often used to treat ice cones and small (
? ② Skin lesions with deep sunken scars or large sunken scars;
③ Box scars, pockmarked scars, concave scars, various concave scars, superficial scars, hypertrophic hypertrophic scars (keloids), etc.
(3) Technical advantages
? ① Skin color: Suitable for all skin types. Compared with traditional treatment, skin color recovery is more natural and almost indistinguishable with naked eyes.
? (2) Technology: intelligent extraction, stable performance, secondary fine-tuning after operation to make the original incision marks more natural, and there will be no obvious boundary between the treatment area and the non-treatment area;
? ③ Minimally invasive: brand-new minimally invasive, no scar, avoiding the secondary trauma of traditional surgery to local skin tissue;
? ④ Safety: short treatment time, quick healing, no hospitalization, and follow-up treatment; ?
⑤ Efficacy: It can be used repeatedly. One trephine is equivalent to 30 times of laser, which is more thorough than laser treatment, and the effective rate can reach above 80-98%.
[4] case
[Type of acne scar] The forms of acne scar can be divided into patch, papule, keloid, roll, ice cone, boxcar, bridge and tunnel.