Chii chinonzi PLLA (Poly-l-lactic Acid)?

Chii chinonzi PLA?

Kwemakore, lactic acid ma polymers ave achishandiswa zvakanyanya mumhando dzakasiyana dzeminda yekurapa, senge: inonwika sutures, intraosseous implants uye yakapfava tishu implants, nezvimwewo, uye poly-L-lactic acid yakashandiswa zvakanyanya muEurope kurapa kumeso. kuchembera.

Yakasiyana kubva kune inozivikanwa inozivikanwa cosmetic kuzadza zvinhu senge hyaluronic acid, allogeneic collagen uye autologous mafuta, PLLA (poly-L-lactic acid) ndeyechizvarwa chitsva chezvekurapa regenerative zvinhu.

Icho chinhu chekurapa chakagadzirwa nemunhu chinogona kuora uye kunyudzwa, chine biocompatibility yakanaka uye kuora, uye inogona kuparara kuita kabhoni dhaikisaidhi nemvura yoga mumuviri.

PLLA yakashandiswa zvakanyanya munharaunda yekurapa kweanoda kusvika makore makumi mana nekuda kwekuchengetedzwa kwayo, uye mushure mekushandiswa mundima yezvekurapa aesthetics, yakatevedzana yakawana marezinesi kubva kune ane chiremera anodzora masangano munyika dzakawanda:

1. Muna 2004, PLLA yakabvumirwa muEurope kurapwa kwechiso chikuru lipoatrophy.

2. Muna Nyamavhuvhu 2004, FDA yakabvumidza PLLA kuti ijekiseni kurapa kutapukira kwemafuta kumeso kwakabatana neHIV.

3. Muna Chikunguru 2009, FDA yakabvumidza PLLA kune yakapfava kusvika kune yakakomba nasolabial folds, kumeso kwakakombama uye mamwe kuunyana kumeso muvarwere vane hutano.

Zvikonzero zvekuchembera

Iyo dermis yeganda inoumbwa necollagen, elastin, uye glycosamine zvinhu, izvocollagen inodarika 75%, uye ndicho chikamu chikuru chekuchengetedza ganda gobvu uye elasticity yeganda.

Kurasikirwa kwe collagen ndicho chikonzero chikuru chekuputsika kweiyo elastic network inotsigira ganda, iyo shrinkage uye kudonha kweganda tishu, uye kutaridzika kwekuoma, hutsinye, kusununguka, kuunyana uye zvimwe zviitiko zvekuchembera paganda!

Collagen yakakwana inogona kuita kuti masero eganda awedzere, kuita kuti ganda rinyoro, ritete uye rakatsetseka, uye zvinodzivirira kudzivirira kukwegura kweganda.

PLA inogona kungozadzisa zvinodiwa negandakugadzirwa patsva kwe collagen. Iyo ine yakakosha kusimudzira mhedzisiro pakukura kwe collagen, uye inogona kuwana nekukurumidza kukura kwe collagen density muganda munguva pfupi yenguva, uye kuichengetedzaanopfuura makore maviri.

PLA inogona kunyatso kuvandudza ganda rekuzvitonga, kugadzirisa uye kuvandudza mabasa nekukurudzira kudzoreredzwa kwe collagen uye elastin, kutambanudza kugadzirwa.

Gadzirisa dambudziko rekushaikwa kwehunyoro mudermis uye kurasikirwa kwe collagen kubva pamudzi, ita kuti masero eganda awedzere, uye ganda rinodzokera kune yakakwana mamiriro ehunyoro hwakazara, hutete uye hwakatsetseka.

Chaiyo kurapwa kesi