Kodi PLLA (Poly-l-lactic Acid) ndi chiyani?

PLLA ndi chiyani?

Kwa zaka zambiri, ma polima a lactic acid akhala akugwiritsidwa ntchito kwambiri m'magulu osiyanasiyana azachipatala, monga: sutures absorbable, implants intraosseous implants ndi implants zofewa, etc., ndi poly-L-lactic acid yakhala ikugwiritsidwa ntchito kwambiri ku Ulaya pochiza nkhope. kukalamba.

Zosiyana ndi zodziŵika bwino zodzikongoletsera zodzikongoletsera monga hyaluronic acid, allogeneic collagen ndi autologous mafuta, PLLA (poly-L-lactic acid) ndi ya mbadwo watsopano wa zipangizo zopangira mankhwala.

Ndi mankhwala opangidwa ndi anthu omwe amatha kuwola ndikumwedwa, amakhala ndi biocompatibility yabwino ndi kuwonongeka, ndipo amatha kuwola kukhala mpweya woipa ndi madzi okha m'thupi.

PLLA yakhala ikugwiritsidwa ntchito kwambiri pazachipatala kwa zaka pafupifupi 40 chifukwa cha chitetezo chake, ndipo itatha kugwiritsidwa ntchito pazachipatala, idalandira ziphaso motsatizana ndi mabungwe olamulira m'maiko ambiri:

1. Mu 2004, PLLA inavomerezedwa ku Ulaya kuti athetse vuto lalikulu la lipoatrophy.

2. Mu Ogasiti 2004, FDA idavomereza PLLA kuti ibayidwe jekeseni wochizira matenda obwera chifukwa cha kachilombo ka HIV.

3. Mu July 2009, FDA inavomereza PLLA kuti ikhale yochepetsetsa mpaka yowopsya ya nasolabial, zofooka za nkhope ndi makwinya ena a nkhope kwa odwala athanzi.

Zomwe zimayambitsa ukalamba

Khungu la khungu limapangidwa ndi collagen, elastin, ndi glycosamine zinthu, zomwecollagen imakhala yoposa 75%, ndipo ndicho chigawo chachikulu kuti khungu makulidwe ndi elasticity khungu.

Kutayika kwa collagen ndiye chifukwa chachikulu cha kusweka kwa maukonde otanuka omwe amathandizira khungu, kuchepa ndi kugwa kwa minofu yapakhungu, komanso mawonekedwe owuma, owuma, otayirira, makwinya ndi zochitika zina zakukalamba pakhungu!

Collagen yokwanira imatha kupangitsa kuti khungu likhale lolemera, limapangitsa khungu kukhala lonyowa, lofewa komanso losalala, komanso kuteteza khungu kukalamba.

PLLA imatha kungokwaniritsa zofuna za khungukusinthika kwa collagen. Ili ndi mphamvu yolimbikitsira kwambiri pakukula kwa collagen, ndipo imatha kukulitsa kachulukidwe ka collagen pakhungu pakanthawi kochepa, ndikuisungabe kwanthawi yayitali.kuposa zaka 2.

PLLA imatha kusintha bwino khungu, kudziletsa, kukonza ndi kukonzanso ntchito polimbikitsa kusinthika kwa collagen ndi elastin, kutambasula kapangidwe kake.

Kuthetsa vuto la kusowa kwa chinyezi mu dermis ndi kutayika kwa kolajeni kuchokera muzu, kupanga maselo a khungu kukhala ochuluka, ndipo khungu libwerere kumalo abwino kwambiri a chinyezi, chosakhwima komanso chosalala.

Mlandu weniweni wa chithandizo