Kuvhiya suture ndiyo inonyanya kukosha tambo zvinhu mukuvhiya, uye zvakare ndiyo yakajairika kushandiswa kwemachira ebiomedical. Iyo tambo zvinhu zvinonyanya kuumbwa nefiber chigamba, multifilament yakarukwa kana multifilament yakamonyoroka chimiro. Parizvino, zvinhu zvakawanda zvekurapa zvepamusoro pamusika zvinotsamira pane zvinotengeswa kunze kwenyika, izvo zvinodhura zvakanyanya. Naizvozvo, zvinokasira kugadzira zvemukati zvemhando yepamusoro zvekurapa zvine kodzero dzakazvimirira dzepfuma.

Munguva pfupi yapfuura, boka rinotungamirirwa naShuhong Yu kubva kuYunivhesiti yeScience uye Technology yeChina (USTC) yakadzidza microstructure uye mechanical properties ye lotus root fiber, uye yakagadzira bhakitiriya cellulose hydrogel fiber inogona kushandiswa pakuvhiya sutures.

Bacterial cellulose (BC) hydrogels yakagadziriswa kuita hydrogel fibers (BHF) ine lotus film-like microhelical structure. Kusiyana nemahydrogel akaumbwa nemacheni epolymer, BHF ine helical chimiro ine kuoma kwe116.3 MJ/m3, iyo inodarika ka9 iyo isina kurapwa BC hydrogel fibers. Zvichakadaro, matatu-dimensional nanofiber network yebacterial cellulose hydrogels inoita kuti BHF ive nesimba repamusoro rinopfuura 90 MPa.

Yayo yakasarudzika cellulose nanofiber network uye bionic helical chimiro chechinhu kuunza yakasarudzika "inogona kutambanudza, usadzoke" michina zvivakwa, izvo zvinogona zvinobudirira buffer uye inonwisa simba, uye nekuenderana kwekushanduka kwemuviri wemunhu, kuitira kuti udzivise kukuvara kwechipiri maronda akachekwa, nekuda kwekushandiswa kwayo mumunda wepamusoro-yekupedzisira suture yekuvhiya yakaisa hwaro hwakanaka.

BHF ine yakanakisa mechaniki zvivakwa uye biocompatibility, kunyanya yakakodzera kuvhiya sutures. Kana ichienzaniswa nekutengesa sutures yekuvhiya ine yakakwira modulus uye kuoma, BHF ine modulus yakafanana neyakapfava tishu, inogona kutora simba kubva padeformation yetishu yakatenderedza ronda, uye inogona kuburitsa imwe deformation ne deformation yeronda tishu, uye zvinobudirira kudzivirira vanga kubva kutemwa kaviri ne suture. Pamusoro pezvo, iyo porous chimiro che nanofiber hydrogels zvakare inogonesa BHF kushambadza mishonga inorwisa mabhakitiriya kana anti-kuzvimba mishonga uye kuramba ichiburitsa panzvimbo yemaronda, nekudaro ichiita basa rinopesana nekuzvimba uye kukurumidza kuporesa maronda.

Zvakawanikwa zvakaburitswa mujenari Nano Tsamba pasi pezita rekuti "Bio-yakafuridzirwa loto-fiber-seHydrogel Bacterial Cellulose Fibers".

(Kwakabva: Textile News official micro blog)