I-EPTFE inokwakheka nokusebenza okuyingqayizivele, i-biocompatibility enhle, futhi ifaneleka kakhulu ukulungiswa nokuhlinzwa kwezitho.Futhi ngokuthuthuka kwezokwelapha, ukuthandwa kwemisebenzi ehlukahlukene enzima, kanye nokuthuthukiswa kwamazinga okuphila abantu, isidingo semikhiqizo ye-EPTFE siyakhula.
Ngemuva kokuxuba, ukugaya, ukubumba, i-calendering, ukomisa, ukwelula, ukugcoba, kuzokhiqizwa imikhiqizo emhlophe, ethambile, enwebekayo ye-EPTFE.
I-EPTFE inokwakheka nokusebenza okuyingqayizivele, i-biocompatibility enhle, futhi ifaneleka kakhulu ukulungiswa nokuhlinzwa kwezitho.Futhi ngokuthuthuka kwezokwelapha, ukuthandwa kwemisebenzi ehlukahlukene enzima, kanye nokuthuthukiswa kwamazinga okuphila abantu, isidingo semikhiqizo ye-EPTFE siyakhula.
Ngemuva kokuxuba, ukugaya, ukubumba, i-calendering, ukomisa, ukwelula, ukugcoba, kuzokhiqizwa imikhiqizo emhlophe, ethambile, enwebekayo ye-EPTFE.
1.I-pImikhiqizo ye-olymer ye-PTFE kwezokwelapha ingahlukaniswa ngezigaba ezi-3:
1.1.Imikhiqizo engena ngqo emzimbeni womuntu (unomphela noma wesikhashana)
Imikhiqizo ye-polymer ekhona unomphela entweni ephilayo izimila (izindawo zokwenziwa zezicubu nezitho).Ukusetshenziswa kwesikhashana kuhlanganisa ama-catheter, amashubhu okudonsa amanzi, izindlebe, izihlungi, amadivaysi okungenisa umoya, njll. Asetshenziselwa ikakhulukazi ukuthutha izinto namagesi, ukuhlungwa kwemidiya, njll.
1.2.Imikhiqizo yokusetshenziswa kwangaphandle
Izakhiwo ze-PTFE polymers ezifana nepulasitiki, ukukhanya, ukuqina, ukuqina nokunwebeka, ukuzinza kumidiya egqwalayo, ukufakwa kukagesi, njll., kubaluleke kakhulu.Le mikhiqizo ihlanganisa amagilavu, ama-tourniquets, amathuluzi okulungisa izitho, ama-sheath angaphandle emishini ehlukahlukene yokuxilonga, njll.
1.3.Izingxenye ezisebenzayo zokuhlaziywa kwe-biochemical kanye nemishini ye-biochemical synthesis, amadivaysi okuhlakulela, ukuvuselela nokusabalalisa amaseli, izicubu, njll.
2. Ukusetshenziswa kwemikhiqizo ye-PTFE ekwelashweni
2.1 Ukusetshenziswa kwesiqephu se-PTFE esinwetshiwe ekulungiseni i-hernia yangaphandle yesisu yisifo esivame kakhulu sokuhlinzwa, futhi iningi elikhulu i-inguinal hernia.Ukwelashwa ngokuhlinzwa kuyikhambi elaziwayo.I-PTFE iyi-fluoride ephelele, futhi ifayibha ye-PTFE enwetshwe ngokukhethekile ingabonisa isakhiwo esinezimbobo futhi ingenziwa ibe into ethambile, egobekayo, engagabi.Inzuzo enkulu yesichibi se-PTFE esinwetshiwe ukuguquguquka kwayo okuhle.Amandla kuzo zonke izinhlangothi asesimweni esilinganiselwe.Ingasikwa futhi ihlanganiswe njengoba kudingeka.Ibonisa ukuqhubeka kwe-fiber kanye ne-microstructure eyingqayizivele ye-porous.Amaseli angangena kuwo.Inokuhambisana okuhle kwezicubu, izakhiwo eziphakeme zemishini, ubuhlungu benxeba obulula ngemva kokuhlinzwa, ukwakheka kwezibazi ezincane, nokunethezeka okuhle.Kuyimpahla efanelekile yokulungisa i-hernia engenawo ukucindezeleka.
2.2.Ukusetshenziswa komtholampilo kwe-EPTFE ku-rhinoplasty
2.2.1.Ku-rhinoplasty
Ngokukhubazeka kwekhala, ukufakelwa kwezicubu ngokuvamile kuyadingeka ukuze kulungiswe isici.I-Autologous cartilage iseyiyona nto efanelekile kakhulu yokufakelwa, kodwa kukhona ukushiyeka okufana nobunzima bokuthola izinto zokwakha, ukulimala endaweni yokunikela, kanye nokumuncwa okungalindelekile kwe-graft material.Izinto ze-allogeneic zinokusabela kokwaliwa kwamasosha omzimba futhi kunzima ukuzigcina, ngakho-ke kunzima ukusetshenziswa kabanzi emtholampilo.Ngakho-ke, abantu bahlale befuna into ekahle yokufakelwa kabusha.Ku-rhinoplasty yasekhaya, kusetshenziswa izinto zokufakelwa ezengeziwe, kufaka phakathi irabha ye-silicone ne-hydroxyapatite.
2.2.2.Impahla yokuxhunyelelwa yokwenziwa
Inzuzo ye-EPTFE njenge-graft material yokufakelwa iwukuthi inokuhambisana okuhle kwezicubu, futhi ngesikhathi esifanayo inezici zokukwazi ukubhuleka ezicutshini ezithambile futhi kube lula ukuzikhipha.I-EPTFE inezici ezikhethekile ze-physicochemical.Ama-micropores ayo angama-30μ ngokwesilinganiso, okwenza izicubu zibe endogenous, okwenza ibhuleki lokufakelwa futhi yamukelwe uhlelo lokuzivikela lomzimba.Ngenxa yokuthi izicubu aziyona i-endogenous, akunzima ukususa i-graft.
2.2.3.Ipheshi elingaqinisiwe le-EPTFE
Ngenxa yokuguquguquka kwayo okuhle kungasetshenziswa ukulungisa ukucindezelwa kwezicubu ezithambile zendawo ngemuva noma ichopho lekhala.I-patch eqinisiwe kanye nengemuva elimise okwemuva lekhala kukhona kokubili ukuguquguquka okuthile kanye nobulukhuni obuthile.Ngakho-ke, ingasetshenziswa njenge-graft enekhala elikhulayo le-dorsal.
2.2.4.Kwi-nasal tip plasty
I-nasal septal cartilage ibilokhu ibhekwa njengento efanelekile yokuxhunyelelwa kwe-autologous.I-cartilage ye-septal iqondile, i-elastic, futhi inamandla athile, kodwa okubi ukuthi inani lezicubu ezitholiwe lilinganiselwe.Kwezinto ezisetshenziswa kakhulu zokuxhunyelelwa zokwenziwa, i-hydroxyapatite ayikwazi ukusetshenziselwa ukubumba ithiphu lekhala.Irabha ye-Silicone inezinga lokuphuma eliphezulu uma kuqhathaniswa lokuma kwethiphu yekhala, ikakhulukazi ukuhlukumezeka, futhi ukumbozwa kwesikhumba okunganele kanye nezicubu ezithambile kuzokwandisa amathuba okuphuma.Ukuthungwa kwerabha ye-silicone kunzima kakhulu.Uma amandla okusekela ekugcineni kwekhala makhulu kakhulu, angabangela i-ischemia yesikhumba ekugcineni kwekhala.Ukwesekwa kwesikhathi eside kungenza isikhumba sendawo sibe mncane noma sidabuke futhi i-prosthesis iyakhishwa.Isiqephu esiqinisiwe se-EPTFE sinzima kune-nasal septal cartilage kodwa sithambile kune-silicone.Ngakho-ke, i-patch eqinisiwe ye-EPTFE ingasetshenziswa njengesisekelo se-tip yekhala kanye nekholomu encane yekhala, kodwa ukuntuleka kwayo kokunwebeka kuwukuntuleka kwayo.Uma kuqhathaniswa nerabha ye-silicone, i-EPTFE inezici zokuvumela izicubu ezingapheli, ukuze ugweme i-ischemia nokuqhekeka kwesikhumba sephuzu elisekelayo, ngakho-ke i-EPTFE iyisici esihle sokwenza ithiphu lekhala.
2.2.5.Kwi-nasal tip plasty
Ukuqoshwa kwe-prosthesis kuyisihluthulelo se-plasty yokuhlinzwa.Kuye kwabikwa ukuthi i-prosthesis idluliselwa esimweni sesambulela ngesikhathi sokubunjwa kwephuzu lekhala.Okuhlangenwe nakho kwethu ukuthi i-prosthesis iqoshwe engalweni encane emise okwe-L futhi incishiswe nge-vascular forceps, okuzonikeza ingalo emfushane ukusekelwa okwanele ukuze kuzuzwe ukusekela nokuqhuma kwechopho lekhala.
2.2.6 Imithambo yegazi yokwenziwa
Njengamanje, lo mkhiqizo usetshenziselwa ikakhulukazi i-femoral artery pseudoaneurysm vascular transplantation;i-aortic constriction segment resection (noma ukulungisa) ukufakelwa kwemithambo yegazi yokwenziwa;izinto zokuvala i-portal hypertension shunt;ukuvala ibhuloho le-vena cava ephakeme nephansi ene-atrium yangakwesokudla;uhlelo lwamathumbu Umthambo uboshwe ne-atrium efanele;I-hemodialysis, njll. Izicelo zomtholampilo ezingaphezu kwe-100 zithole imiphumela emihle.Ukusetshenziswa okude kakhulu kwesikhathi sekufinyelele eminyakeni engaphezu kwengu-9.
2.2.7 Uqhoqhoqho lokuzenzela
Isetshenziselwa iziguli ezinokukhubazeka kwe-tracheal cartilage yendawo enkulu, ukugoqeka koqhoqhoqho, nokwehluleka ukwakha ukuphefumula okuvamile kwe-lumen okubangelwa ukulimala kwempi, ukuhlukumezeka, nokuhlinzwa komdlavuza we-laryngeal.indoda ye.Ngemuva kwamacala ayi-10 okusetshenziswa komtholampilo esibhedlela sase-Changchun se-Air Force kanye nokulandelela iminyaka eyi-10, izinga lokusinda laliyi-100%.
2.2.8.Ezinye izinhlelo zokusebenza
Ngemuva kokukhishwa kwamaphaphu, izinto zokwenziwa zisetshenziselwa ukuqeda umgodi osele, futhi i-EPTFE iyinto efanelekile yokupakisha kulesi sigaba.I-EPTFE patch kanye ne-polypropylene patch kuphephile futhi kuyasebenza ekufakweni kwe-inguinal hernia kubantu asebekhulile, abanezinkinga ezimbalwa nezinga lokuphindaphinda eliphansi kunokufakwa kwendabuko.Phakathi kwazo, i-EPTFE patch ingcono kune-polypropylene patch Amaphilisi akhululekile.Ukusabela kokuvuvukala kanye nokusabela komzimba wangaphandle okubangelwa i-EPTFE kuncane, futhi akukho ukusabela okubi okubonakala endaweni yenxeba eyonakele, engasetshenziswa njengento yokuvala amanxeba.
Isikhathi sokuthumela: Jun-21-2020