Ubuchwepheshe bokukhipha amashubhu amaningi we-lumen
Impumelelo phakathiamashubhu wezokwelapha amaningi we-lumenubuchwepheshe be-extrusion bunayokukhushuliweukusetshenziswa kwezokwelaphaamashubhuezingeni elisha.
Embonini yemishini yezokwelapha, ukwanda okuncane kokuhlaselaery ishintsha ukuze ifune u-sumallerfuthiimishini yezokwelapha emisha.Amadivayisi asebenza emithanjeni yegazi noma ezinye izicubu adinga ukwelashwaamashubhungokunemba okuphezulu, ukubekezelelana okuqinile kanye nomsebenzi owengeziwes.Njengobaamashubhu aklanyweeyinkimbinkimbi kakhulu, ubuchwepheshe be-extrusionto zikhiqizebabe yinkimbinkimbi.Akungabazeki lokhoiokuningi-lume ishubhui-extrusionubuchwephesheihamba phambili kwezobuchwepheshe be-extrusion.
Okuningi-lumei-extrusion noma i-co-extrusion ingachazwa njengokukhishwa ngesikhathi esisodwa kwezingqimba eziningi zezintosukukhiqizaamashubhu ezokwelapha ane-lumen eminingi.Okuningi-lumeubuchwepheshe busetshenziswa ngokuyinhloko ukuthuthukisa ukusebenza: ukuhlanganisa izinto ezishiselayo nezinto ezinezici ezithile zokusebenza, njengokuthambisa.Lezi zakhiwo zingase futhi zithuthukise ukusebenza futhi zinciphise izindleko zokuhlanganisa kanye nempahla, zenze imishini yezokwelapha ingabizi kakhulu kumakhasimende;ezinye izici zingabandakanya ukwengezwa kwezendlalelo zezinto ezisebenzayo, njengezendlalelo ze-hydrophilic, bioabsorbable noma izidakamizwa eluting.Ubuchwepheshe nezinto zokwakha ezitholakalayo ukukhiqiza imikhiqizo ye-multilayer yemishini yezokwelapha zithuthuke kakhulu futhi zinikeza abaklami izinhlobonhlobo zezinketho ze-optimized usayizi, impahla kanye nomsebenzi.
Imisebenzi yemedical PTFE multi-lumen tubingemishinini yezokwelaphazihlanganisa: cphindaing ishubhuizindawo ezinezici ezihlukene zendawo yangaphandle nengaphakathi;ukuhlanganisaizinto ezinezici ezihlukene ukuze zenze eziyingqayiziveleishubhuizici;inika amandlaizinto ezisebenzayoukuibekwe ngokufanele;ukuthola indawoizinto eziboshiwe ngaphakathi noma ngaphandle ukuze uzihlanganisele futhi uhlanganise kalula amadivaysi ezokwelapha ayinkimbinkimbi.
Ukucutshungulwa kwe-multi-lumen tubes idinga ochwepheshe ukuthi bahlanganise ndawonye izinhlobo eziningi zama-extruder kanye nemishini esezansi nomfula.Ngale ndlela engeyinhle, kungenzeka ukuthi ama-extruder ahlukahlukene wonke azoba endizeni efanayo, okuholela emigwaqweni emide yokugeleza, ingcindezi ekhulayo ye-extrusion kanye nokwanda kwesikhathi sokucubungula impahla.Ngaphansi kwendlela yokucubungula enjalo,okudingekayoithubhuizilinganiso zesendlalelo azifani nokuphuma okuphelele kwe-extruder, okungaholela ekutheniphezulu kakhulu noma phansiisivinini sesikulufu, nokunye khiqiza amashubhuenezakhiwo ezimbi zemishini.
I-multi-lumen yesimanjeishubhuImishini yokucubungula i-extrusion kungenzeka ukuthi ihlanganiswe ngokugcweleukukhiqizaukuhambisana ne-interface yomsebenzisi oyedwa eqapha, elawula futhi erekhoda lonke uhlelo lwe-extrusion ngesikhathi sangempela.Ama-extruder wesendlalelo ngasinye se-polymer akhethiwe ukuze anikeze uhla olufiswayo lwezivinini zokuphuma ezingafaki engcupheni izici zomshini zezinto.Amiswe ukuze anciphise isikhathi sokuhlala esibalulekile, futhi ngokuvamile i-extruder eyodwa noma ngaphezulu ingafakwa iqonde noma nge-engeli engu-45°.Ngokuvamile, i-extruder eyodwa noma ngaphezulu ku-multi-uhlelo lumen kuyoba micro-extruder ngeubuncaneokukhiphayoof 50 amagremu ngehora, ukuvumelaanisendlalelo ngasinye sibe ugqinsi lwama-microns ambalwa.Abakhiqizi balawa ma-micro-extruder basebenzisa amadizayini ama-extruder amasha ukuze baqinisekise ukuthi ama-pellets epulasitiki ajwayelekile ahamba kahle esigabeni sokuphakelayo se-extruder ngaphandle kokulahlekelwa ukuzinza.
Okulindelwe ngamakhasimende kushayela ukusetshenziswa okukhulu kwalolu hlelo lokulawula inqubo yezibalo kanye nokwandisa izidingo zomkhiqizo ezivela kuma-ejensi alawulayo.Nokho, ukukala okunembile okusemgqeni wethinwkonkemedicaltubingkuseyinselelo enkulu kubakhiqizi bemishini yezokwelapha.
Kusenezinto ezimbalwa ze-thermoplastic ezingaba khonaesetshenzisiweukuklama amashubhu amaningi ane-lumen.Izinto ezisetshenziswa kakhulu yilezo ngokwesiko ezisetshenziswa ukwenza amashubhu ezokwelapha, njenge-polyamide (PA), i-thermoplastic elastomer (TPE), i-polyurethane (PU), i-polyvinyl chloride (PVC), ne-polyolefin (PE).Lezi zinto zingenziwa ngendlela oyifisayo ukuze zifake izingxenye ezikhipha izidakamizwa, izinto ezikhipha imisebe, izigcwalisi, kanye/noma imibala.Kodwa-ke, umklami kufanele acabangele izinga lokushisa lokucubungula, izici zokugeleza kanye ne-viscosity encibilikayo yezinto.
I-Multi-lumenishubhuubuchwepheshe be-extrusion bufaneleka ikakhulukazi inoveli ekhiphayo noma esebenzayokuyabizaizinto ezinemisebenzi ethile ngoba ivumela ukwakheka okufanele kokubekwa kwalezi zinto kuishubhu lezokwelapha. A cisibonelo ommonyilokhu: ukubekaizidakamizwa-eluting on the ungqimba yangaphandleishubhunomaukubekaizinto ezigcotshisiwe kakhulu ongqimbeni lwangaphakathi lweishubhu.Ngaphezu kwalokho,amashubhu wezokwelapha amaningi we-lumenunayoizindleko izinzuzo ngoba izingqimba mncanezingabekwaezindaweni ezisebenza kahle kakhulu.
Izicelo ze-multi-lumen tubing embonini yezokwelapha
Ukushintshwa kwe-Percutaneous kwe-valve yenhliziyo enesifo kuwukwelapha okuvelayo okunikeza enye indlela yezinqubo zokuhlinzwa zendabuko ezigulini ezisengozini enkulu.Kule nqubo ehlasela kancane, ucingo oluqondisayo ludluliswa endaweni yokungena ye-femoral futhi luqondiswe emakamelweni enhliziyo.Igobolondo eliqondisayo lifakwa phezu kocingo oluqondisayo, bese kwethulwa uhlelo lokulethwa kwamavalvu.Iishubhu lezokwelaphaokudingekayo ukuletha i-valve kusayithi kuyisici esikhethekile kakhulu.Ukuphela kwe-distal kumele kusetshenziswe kalula ukuze kuqondiswe ngqo ekamelweni lenhliziyo.I-proximal end idinga ukuqina kakhulu, kufanele ibe nokuphikiswa okuhle kakhulu kwe-kink, futhi ububanzi bangaphakathi budinga ukugcotshwa ukuze bushelelezifuthiukulethwa okungenazihibe kokuthatha indawod ama-valve.Enye imfuneko eyinhlokois ukuthi udongakufaneleube mncane ngangokunokwenzeka ukuze ukwandise ububanzi bendlela yokudiliva yokushintshanisad i-valve ngaphandle kwe-ithubhuilahlekelwa yinoma yimuphi umsebenzi wayo.
Abaqambi babhekane nezinselelo eziningi ekuklameni lesi sici.Amalayini agcotshiwe e-PTFEngokuvamile ukuhlangabezanaizinga lemboni lezinhlelo zokudiliva,kodwa angekezingasetshenziswa ngenxakungenzekaimiphumela yemisebe ye-gamma ngesikhathi sokuvala inzalo.Ukuqinisekisa ukuthiishubhu lezokwelaphaayikhiki noma ikhubazekile njengoba iqondiswa nge-anatomy kuya enhliziyweni, ungqimba olulukiwe kufanele lufakwe engxenyeni.
Idizayini yokugcina iyinhlangano yezendlalelo ezinhlanu ehlanganisa i-ultra-thin-walledamashubhu wezokwelapha amaningi we-lumen, ungqimba olulukiwe lwensimbi engagqwali kanye ne-polyether block amide sheaths yokuqina okuhlukahlukene, okungeza ukusondelene kakhulu nokuguquguquka kwe-distal kungqimba lwangaphandle lomhlangano.
Isiphetho
Ukusetshenziswa okusha kwe-multi-ilumeishubhuekwakhiweni kwezokwelapha kuguqule indlela esixazulula ngayo inani elikhulu lezinkinga zezokwelapha.Esikhathini esizayo, njengethuluzi le-extrusions futhi amasu okuklama umshini athuthuke kakhulu, ahlanganiswe nentuthuko yokulawula inqubo nezinhlelo zokulinganisa,I-SuKo, enye ye-China ephezulu eyi-10izinkampani zamashubhu ezokwelaphalindela ukuzuza ukunemba okukhulu ngokuningi okuncane, okuzacile kanye nokuguquguquka okuningi-lume ithubhus.Ngokuhamba kwesikhathi, multi-lumei-extrusionukukhiqizaimigqa izoba ekhethekile kakhulu kanye nobunye ubuchwepheshe be-extrusionzifakiwenjenge-multi-lumen extrusion, i-tapered extrusion, kanye ne-intermittent/interrupted extrusion.
Isikhathi sokuthumela: Aug-03-2022