Ngokuhamba kweminyaka,PTFE enamathelaizinketho sezikhulile emakethe yemishini yezokwelapha, ithuthukisa izinqubo zokukhiqiza ngezindlela eziningi ezahlukene.Futhi ngezinto eziningi kanye nezinketho zokugqoka ezitholakalayo namuhla, ukukhetha i-mandrel efanele eboshwe ngezidingo zakho eziyingqayizivele zokukhiqiza kungase kubonakale kunzima kakhulu.Ngakho-ke, nazi izici ezinhlanu okufanele uzicabangele lapho ukhetha i-mandrel eboshwe ukwenza isinqumo sakho sibe lula.
1. Cabanga emuva
Okokuqala, cabanga ukuthi iyini inhloso eyinhloko yesicelo sokusetshenziswa kokugcina kanye nemishini.Kungakhathaliseki ukuthi wakha isistimu yokudlulisa ethuthukisiwe enama-lumens amaningi noma i-extruding kumandrel enama-tapered amaningi.Ukuqonda ukuthi umkhiqizo wokugcina uzosetshenziswa kanjani kuzokusiza ukuhlonza izici ezibalulekile ezidingekayo kuma-mandrels aboshwe.
2. Yenza uhlu
Bhala phansi zonke izinhlobo nokuqina kwama-polymers adingekayo ukuze kuhlangatshezwane nezidingo zokusebenza kwe-proximal ne-distal shaft, njengokumelana ne-kink kanye nokuhamba kahle.Kubalulekile futhi ukuqonda ukuthi izinga lokushisa lokusebenza lenqubo yokugeleza kabusha lithinta kanjani i-polymer ngayinye.Ngokwesibonelo, abanyeI-PTFEama-coatings angakwazi ukumelana nezinga lokushisa eliqhubekayo elingu-550°F futhi angamelana nezinga lokushisa elingu-700°F.
3. Hlola izinketho zakho
Manje njengoba usunqume izinga lokushisa ongalisebenzisa, udinga ukucabangela ukuthi iyiphi i-mandrel base material ongayisebenzisa.Nakuba kukhona okonga izindleko ezibonakalayo okufanele zenziwe lapho kucatshangelwa impahla eyodwa phezu kwenye, kufanele ucabangele izakhiwo ezibonakalayo kanye nezinzuzo ukuthi impahla mandrel ngayinye inikeza inqubo yokukhiqiza.Kungaba usizo ukubheka abahlinzeki abanganikezela ngezinhlobonhlobo zama-arbor substrates ezifana nensimbi engagqwali, i-Nitinol, ne-silver-plated copper.Ungakwazi ke avivinye mandrel impahla ngayinye ukuze uthole okungcono kakhulu isicelo sakho kanye nesabelomali.Indlela engcono kakhulu yokwenza lesi sinqumo ukuhlola izinketho zakho.
4. Thola izidingo zokuthambisa
Ukunquma izidingo ze-lubricity kuzosiza ukuqinisekisa ukuthi inqubo yokumboza ifinyelela impilo ende ye-mandrel ngesikhathi sokukhiqiza.Izintambo ezidonsayo nezintambo ezisetshenziswa ezinqubweni zokungenelela kumele zidlule ngaphandle komthungo phakathi kwe-diameter yangaphakathi ye-catheter, ngakho-ke ukugcotshwa kwekhwalithi ephezulu njengokufanaIzinto ze-PTFEkumele isetshenziswe.ezinye izinhlobo ze-PTFE fluoropolymer coatings, njenge-PTFE Natural, zinganikeza izinzuzo zokusebenza.Isibonelo, i-coefficient of friction engu-0.05 ifinyelelwa ukuze kube lula ukukhishwa kwe-catheter ngesikhathi sokushisela i-fuse kanye nemisebenzi yokuthulula.
5. Izakhiwo zokugqoka eziyisihluthulelo okufanele uzibheke
Okokugcina, kungakhathaliseki ukuthi uklama umugqa wokudonsa noma isistimu yokuthutha, hlala ubheka i-mandrel eboshwe ngekhwalithi ene-uniform, enembile, engapheki.
Njengoba ubunkimbinkimbi bukhula nosayizi womkhiqizo uncipha, okokugcotshwa okunamafutha okufana nempahla ye-PTFE kuba kubaluleke kakhulu enqubweni yokukhiqiza i-catheter.Ukuqina nakho kubalulekile ukuze kuqinisekiswe ukuphepha nokusebenza kwanoma iyiphi ingxenye efakwe empahleni yokugcina.
Isikhathi sokuthumela: Dec-14-2022