PLLA (Poly-l-lactic Acid) yog dab tsi?

PLLA yog dab tsi?

Tau ntau xyoo, lactic acid polymers tau siv dav hauv ntau hom kev kho mob, xws li: absorbable sutures, intraosseous implants thiab cov ntaub so ntswg mos, thiab lwm yam, thiab poly-L-lactic acid tau dav siv nyob rau hauv Teb chaws Europe los kho lub ntsej muag. kev laus.

Sib txawv ntawm cov khoom siv tshuaj pleev ib ce zoo xws li hyaluronic acid, allogeneic collagen thiab autologous rog, PLLA (poly-L-lactic acid) belongs rau tiam tshiab ntawm cov ntaub ntawv kho mob.

Nws yog cov khoom siv kho mob uas tib neeg tsim tau tuaj yeem decomposed thiab nqus tau, muaj biocompatibility zoo thiab degradability, thiab tuaj yeem decomposed rau hauv carbon dioxide thiab dej los ntawm nws tus kheej hauv lub cev.

PLLA tau siv dav hauv kev kho mob rau ze li ntawm 40 xyoo vim tias nws muaj kev nyab xeeb, thiab tom qab siv rau hauv kev kho mob zoo nkauj, nws tau ua tiav cov ntawv tso cai los ntawm cov koom haum tswj hwm hauv ntau lub tebchaws:

1. Nyob rau hauv 2004, PLLA tau pom zoo nyob teb chaws Europe rau kev kho mob ntawm lub ntsej muag lipoatrophy loj heev.

2. Thaum Lub Yim Hli 2004, FDA tau pom zoo PLLA rau kev txhaj tshuaj los kho tus kab mob HIV cuam tshuam txog lub ntsej muag rog atrophy.

3. Nyob rau hauv Lub Xya hli ntuj 2009, FDA pom zoo PLLA rau me me mus rau hnyav nasolabial folds, lub ntsej muag contour defects thiab lwm yam ntsej muag wrinkles nyob rau hauv cov neeg mob noj qab haus huv.

Ua rau kev laus

Lub dermis ntawm daim tawv nqaij yog tsim los ntawm collagen, elastin, thiab glycosamine tshuaj, uas.collagen tso nyiaj ntau dua 75%, thiab yog lub ntsiab tivthaiv kom cov tawv nqaij tuab thiab tawv elasticity.

Kev poob ntawm collagen yog qhov laj thawj tseem ceeb rau kev tawg ntawm lub elastic network txhawb cov tawv nqaij, shrinkage thiab vau ntawm daim tawv nqaij, thiab cov tsos ntawm qhuav, ntxhib, xoob, wrinkled thiab lwm yam kev laus tshwm sim ntawm daim tawv nqaij!

Txaus collagen tuaj yeem ua rau cov tawv nqaij plam, ua kom tawv nqaij moist, muag thiab du, thiab tiv thaiv tawv nqaij laus.

PLLA tuaj yeem ua tau raws li daim tawv nqaij xav taucollagen regeneration. Nws muaj cov txiaj ntsig tseem ceeb tshaj plaws ntawm kev loj hlob ntawm collagen, thiab tuaj yeem ua tiav kev loj hlob sai ntawm collagen nyob rau hauv daim tawv nqaij nyob rau hauv lub sij hawm luv luv, thiab tswj nws rauntau tshaj 2 xyoos.

PLLA tuaj yeem txhim kho daim tawv nqaij ntawm tus kheej kev tswj hwm, kho thiab rov tsim dua tshiab los ntawm kev txhawb nqa cov txheej txheem ntawm collagen thiab elastin, ncab qhov kev ntxhib los mos.

daws qhov teeb meem ntawm qhov tsis muaj dej noo nyob rau hauv lub dermis thiab poob ntawm collagen los ntawm cov hauv paus hniav, ua rau cov tawv nqaij plam, thiab daim tawv nqaij rov qab mus rau qhov zoo tshaj plaws lub xeev ntawm tag nrho cov noo noo, ilv thiab du.

Cov ntaub ntawv kho mob tiag tiag