Poly-L-lactic acid (PLLA) yog biodegradable polymer dav siv hauv kev kho mob zoo nkauj thiab cov ntaub so ntswg engineering. Ua tsaug rau nws cov biocompatibility, tswj kev degradation, thiab muaj peev xwm los txhawb kev tsim collagen, PLLA tau dhau los ua cov khoom tseem ceeb hauv cov khoom siv dermal thiab kho cov tawv nqaij rejuvenation. Kab lus no muaj cov ntsiab lus dav dav ntawm PLLA cov ntawv thov hauv kev kho mob zoo nkauj, nws cov txheej txheem hauv qab, qhov zoo, kev txwv, thiab kev txhim kho yav tom ntej.
PLLA yog dab tsi?
PLLA yog ib qho stereoisomer ntawm polylactic acid (PLA) - tshwj xeeb tshaj yog "L-lactic" daim ntawv - paub txog nws cov crystallinity siab dua, tshuaj stability thiab lub sij hawm degradation ntev dua piv rau lwm hom.
Hauv cov tshuaj kho kom zoo nkauj, PLLA yog siv los ua bio-stimulating muab tub lim uas nws lub tshuab tsis yog ntim puv nkaus xwb tab sis collagen induction.
PLLA Ua Haujlwm li cas hauv Kev Kho Kom Zoo Nkauj?
2.1 Mechanism of Action
Thaum PLLA microparticles raug txhaj rau hauv qhov tob dermis lossis cov ntaub so ntswg subdermal:
Thaum xub thawj, muaj qhov cuam tshuam me me vim lub tsheb raug ncua; qhov no yuav txo qis hauv thawj ob peb hnub.
Nyob rau lub asthiv tom ntej no mus rau lub hlis, PLLA cov khoom pib ua rau lub cev me me txawv teb chaws (macrophage thiab lymphocyte teb) uas txhawb nqa fibroblasts kom proliferate thiab tsim cov collagen tshiab (tshwj xeeb yog hom I).
Raws li cov polymer maj mam degrades (hydrolysis rau hauv lactic acid, ces metabolised), lub tshiab tsim collagen matrix tseem muab kev txhawb nqa, muab kev kho mob nws cov nyhuv ntev.
2.2 Cov txiaj ntsig kho mob hauv kev kho mob zoo nkauj
Daim tawv nqaij Rejuvenation & Volume Restoration: Los ntawm kev tsim cov collagen endogenous, PLLA tuaj yeem txhim kho daim tawv nqaij elasticity, smooth wrinkles, thiab ntxiv rau lub ntsej muag ntim.
Lub neej ntev: Muab piv rau ntau cov hyaluronic acid (HA) fillers, PLLA cov nyhuv feem ntau kav ntev.12-24 lub hlis(qee zaum ntev dua nyob ntawm kev tsim thiab qhov chaw txhaj tshuaj).
Biodegradability & Kev nyab xeeb: Raws li kev tshawb fawb biodegradable polymer zoo, PLLA qhov kev hloov pauv maj mam txo cov khoom siv txawv teb chaws mus ntev.
Cov ntawv thov tseem ceeb hauv kev zoo nkauj
3.1 Dermal Fillers & Skin Laxity
PLLA yog txhaj rau hauv cov cheeb tsam uas muaj qhov ntim poob (piv txwv li, lub puab tsaig, lub tuam tsev) lossis cov tawv nqaij laxity los txhawb cov collagen thiab txhawb nqa. Txoj kev kho mob tshwj xeeb yog tsim nyog rau cov neeg mob uas nrhiav kev maj mam, kev txhim kho ntuj thaum lub sij hawm es tsis yog volumisation tam sim ntawd.
3.2 Lwm Cov Kev Siv Hluav Taws Xob
Ua ke siv PLLA nrog cov xov los yog mesh implants rau daim tawv nqaij zawm los yog qis lub ntsej muag contouring.
Siv raws li scaffold lossis cog cov khoom siv hauv kev tsim kho dua tshiab (txawm tias kev zoo nkauj yog qhov tseem ceeb ntawm no). Kev tshawb fawb qhia PLLA qhov dav dav biomaterial muaj peev xwm hauv cov ntaub so ntswg engineering.
Qhov Zoo & Kev Txwv
Qhov zoo
Cov nyhuv ntev ntev li collagen tsim lub sijhawm.
Zoo biocompatibility thiab biodegradability (thaum tsim kom raug).
Muaj peev xwm rov hais dua rau cov neeg mob zoo nkauj nrhiav kev maj mam "refresh" dua li qhov muab tub lim.
Kev txwv / kev txiav txim siab
Cov txiaj ntsig tau nthuav dav zuj zus - cov neeg mob yuav tsum nkag siab tias cov txiaj ntsig tau tshwm sim ntau lub lis piam/hli.
Cov txheej txheem rhiab heev: kev txhaj tshuaj tsis sib xws lossis qhov chaw tsis raug tuaj yeem ua rau cov nodules lossis pob.
Raws li biomaterial, cov ntaub ntawv kev tshawb fawb tseem ceeb: polymer loj, crystallinity, formulation tag nrho cuam tshuam cov txiaj ntsig.
Vim tias nws txhawb nqa collagen ntau dua li qhov ntim tam sim ntawd, kev tswj hwm kev cia siab yog qhov tseem ceeb.
Singderm Injectable PLLA Filler
Yav Tom Ntej Trends & Market Outlook
Nrog rau qhov kev thov loj zuj zus rau cov tawv nqaij me me, PLLA lub luag haujlwm ua "collagen stimulator" ua rau nws nrov hauv kev kho mob zoo nkauj.
Kev nce qib hauv polymer chemistry thiab formulation yuav optimize PLLA tus nqi degradation, particle loj, thiab kev ruaj ntseg profile, txhim kho cov txiaj ntsig.
Muaj peev xwm sib txuas PLLA nrog lwm cov thev naus laus zis (xws li, kev kho laser, microneedling, bioactive scaffolds) los txhim kho kev ua tau zoo.
Rau ib lub tuam txhab zoo li koj li (tshwj xeeb hauv cov khoom siv biomaterials), tso PLLA-raws li cov khoom zoo nkauj (los yog koom tes nrog cov tuam txhab tsim khoom zoo nkauj) tuaj yeem qhib qhov kev lag luam loj hlob.