Itekhnoloji ye-extrusion ye-tubing ye-multi-lumen
Impumelelo phakathiiityhubhu yonyango ye-lumen emininziiteknoloji ye-extrusion iyeukunyuselwaukusetyenziswa kwezonyangoimibhobhokwinqanaba elitsha.
Kumzi mveliso wezixhobo zonyango, ukuhlasela okungephiirends ifuna i-sumthengisikwayeizixhobo zonyango eziqalayo.Izixhobo ezisebenza kwimithambo yegazi okanye ezinye izicubu zifuna unyangoimibhobhongokuchaneka okuphezulu, ukunyamezela okuqinileyo kunye nomsebenzi owongezelelweyos.Njengokoiityhubhu ziyilelwenzima ngakumbi, itekhnoloji extrusionto ziveliseibenzima ngakumbi.Alithandabuzeki elokubaiezininzi-lumen imibhobhoi-extrusioniteknolojiiphambili kwitekhnoloji ye-extrusion.
Zininzi-lumenI-extrusion okanye i-co-extrusion inokuchazwa njenge-extrusion ngaxeshanye yeeleya ezininzi zezinto.sukuvelisaiityhubhu zonyango ezininzi-lumen.Zininzi-lumenitekhnoloji isetyenziswa ikakhulu ekuphuculeni ukusebenza: ukudibanisa imathiriyeli edityanisiweyo kunye nemathiriyeli enezinye iimpawu ezithile zokusebenza, ezifana nokuthambisa.Ezi zakhiwo zinokuphinda ziphucule ukusebenza kunye nokunciphisa iindleko zendibano kunye nezinto eziphathekayo, okwenza izixhobo zonyango zibe neendleko eziphezulu kubathengi;ezinye iimpawu zinokubandakanya ukongezwa kweeleya zezinto ezisebenzayo, ezifana ne-hydrophilic, i-bioabsorbable okanye i-drug-eluting layers.Itekhnoloji kunye nezinto ezifumanekayo zokuvelisa iimveliso ezininzi zezixhobo zonyango ziphuculwe kakhulu kwaye zinika abaqulunqi uluhlu olubanzi lweenketho zokuphuculaed ubukhulu, imathiriyeli kunye nomsebenzi.
Imisebenzi yezonyango PTFE ityhubhu multi-lumenkwizixhobo zonyangoziquka: cphindange imibhobhoimiphezulu eneempawu ezahlukeneyo kwiindawo zangaphandle nangaphakathi;ukudibanisaizixhobo ezineempawu ezahlukeneyo zokwenza ezizodwaimibhobhoiimpawu;inika amandlaizinto ezisebenzayoukubaindawo efanelekileyo;indawoizinto ezibophelelayo ngaphakathi okanye ngaphandle ukuze uzenzele kunye nokuhlanganisana okulula kwezixhobo zonyango ezinzima.
Ukulungiswa kwebhafu ene-lumen ezininzies ifuna amagcisa ukuba adibanise iintlobo ngeentlobo zee-extruders kunye nezixhobo ezisezantsi.Ngale ndlela ihlwempuzekileyo, kunokwenzeka ukuba ii-extruders ezahlukeneyo ziya kuba kwinqwelomoya enye, okukhokelela kwiindlela ezihamba ixesha elide, ukunyuka koxinzelelo lwe-extrusion kunye nexesha lokunyuka kwezinto eziphathekayo.Ngaphantsi kwendlela yokucubungula enjalo,into efunekayoityhubhuireyishini zomaleko azihambelani neyona mveliso iphezulu ye-extruder, enokukhokelela kwiphezulu kakhulu okanye phantsiizantya zokujija, nangaphezulu ukuvelisa iityhubhuezineempawu ezimbi zoomatshini.
I-multi-lumen yanamhlanjeimibhobhoIsixhobo sokulungisa i-extrusion kunokwenzeka ukuba sidityaniswe ngokupheleleyoimvelisoumgca kunye nojongano lomsebenzi omnye obeka iliso, olawula kwaye urekhode yonke inkqubo ye-extrusion ngexesha lokwenyani.I-Extruders ye-polymer layer nganye ikhethiweyo ukubonelela ngoluhlu olufunwayo lwezantya zemveliso ezingaphazamisi iimpawu zomatshini zezinto.Zibekwe ukuze zinciphise ixesha lokuhlala, kwaye ngokwesiqhelo i-extruder enye okanye ngaphezulu inokunyuswa ngokuthe nkqo okanye kwi-engile ye-45 °.Ngokuqhelekileyo, i-extruder enye okanye ngaphezulu kwi-multi-inkqubo lumen iya kuba micro-extruders ngeubuncinaneimvelisoof 50 grams ngeyure, ukuvumelaanUmaleko ngamnye kufuneka ube ziimicrons ezimbalwa ubukhulu.Abavelisi bezi micro-extruder basebenzisa uyilo olusha lwe-extruder ukuqinisekisa ukuba iipellet zeplastiki eziqhelekileyo zihamba kakuhle ngecandelo lokutya le-extruder ngaphandle kokulahleka kozinzo.
Ulindelo lwabathengi luqhuba ukusetyenziswa okukhulu kwenkqubo yolawulo lweenkcukacha-manani kunye nokwandisa iimfuno zemveliso ezivela kwii-arhente ezilawulayo.Nangona kunjalo, umlinganiselo ochanekileyo womgca wethayiwzonkemedicaltubhingkuhlala kungumngeni omkhulu kubenzi bezixhobo zonyango.
Kusekho izinto ezimbalwa ze-thermoplastic ezinokubakhoesetyenzisiweyoukuyila iityhubhu ezininzi zelumen.Izinto ezisetyenziswa ngokuqhelekileyo zezo zisetyenziselwa ukwenza i-tubing yonyango, njenge-polyamide (PA), i-thermoplastic elastomer (TPE), i-polyurethane (PU), i-polyvinyl chloride (PVC), kunye ne-polyolefin (PE).Ezi zixhobo zinokwenziwa ngokwezifiso ukuze zibandakanye amacandelo e-eluting amachiza, imathiriyeli ye-radioactive, izigcwalisi, kunye/okanye imibala.Nangona kunjalo, umyili kufuneka athathele ingqalelo ubushushu bokusebenza, iimpawu zokuqukuqela kunye ne-viscosity yokunyibilika kwezinto.
I-Multi-lumenimibhobhoitekhnoloji ye-extrusion ifanelekile ngokukodwa kwinoveli ekhuphayo okanye esebenzayozibiza kakhuluizinto ezinemisebenzi ethile kuba ivumela uyilo olufanelekileyo lokubekwa kwezi zinto kwiiityhubhu yezonyango. A common umzekeloyi: ukubekaiziyobisi-eluting izinto kumaleko yangaphandleimibhobhookanyeukubekaizinto lubricated kakhulu phezu umaleko lwangaphakathi leimibhobho.Ngaphezu koko,iityhubhu yonyango ye-lumen emininziuyeiinzuzo iindleko ngenxa umaleko obhityileyoinokubekwakwezona ndawo zisebenzayo.
Ukusetyenziswa kwetyhubhu ye-lumen emininzi kwishishini lezonyango
Ukutshintshwa kwe-Percutaneous yevalve yentliziyo enesifo lunyango oluvelayo olunika enye indlela yotyando lwesintu kwizigulana ezisemngciphekweni omkhulu.Kule nkqubo encinci, intambo yesikhokelo idluliswa kwindawo yokungena ye-femoral kwaye ikhokelwa kumagumbi entliziyo.I-sheath yesikhokelo ifakwe phezu kocingo lwesikhokelo, kwaye inkqubo yokuhanjiswa kwevalve iyaziswa.Iiityhubhu yezonyangoefunekayo ukuhambisa ivalve kwisiza licandelo elikhethekileyo.Ukuphela kwe-distal kufuneka kuqhutywe lula ukwenzela ukuba kukhokelwe ngokuthe ngqo kwigumbi lenhliziyo.Ukuphela kweproximal kufuneka kube nzima ngakumbi, kufuneka ibe nokuxhathisa okugqwesileyo kwekink, kwaye i-diameter yangaphakathi kufuneka ithanjiswe ukuze igudiswekwayeunikezelo olungaphazanyiswa lokubuyiselad iivalve.Enye imfuneko ephambiliis ukuba udongakufaneleube mncinci kangangoko ukunyusa umda wonikezelo wendlela yokuhambisad ivalve ngaphandle kweityhubhuilahlekelwe nawuphi na umsebenzi wayo.
Abaqulunqi bajongana nemingeni emininzi ekuyileni eli candelo likhethekileyo.PTFE iilitha ezithanjiswayongokuqhelekileyo ukuhlangabezanaumgangatho woshishino weenkqubo zonikezelo,kodwa awukwazizisetyenziswe ngenxa yekunokwenzekaiziphumo zemitha ye-gamma ngexesha lokuvala inzala.Ukuqinisekisa ukuba iiityhubhu yezonyangoayinakiki okanye ikhubaze njengoko ikhokelwa nge-anatomy ukuya entliziyweni, umaleko ophothiweyo kufuneka ufakwe kwicandelo.
Uyilo lokugqibela luyindibano enemigangatho emihlanu ebandakanya i-ultra-thin-wallediityhubhu yonyango ye-lumen emininzi, i-braided layer of stainless steel and polyether block amide sheaths of different hardnesss, esongeza i-proximal jikelele kwi-distal flexibility kuluhlu lwangaphandle lwendibano.
Ukuqukumbela
Ukusetyenziswa okutsha kwe-multi-lumenimibhobhokuyilo lwezonyango luguqule indlela esisombulula ngayo inani elikhulu leengxaki zonyango.Kwixesha elizayo, njengesixhobo se-extrusions kunye nobuchule bokuyila oomatshini buba phambili ngakumbi, buhamba nophuculo kulawulo lwenkqubo kunye neenkqubo zokulinganisa,I-SuKo, enye ye-China ephezulu ye-10iinkampani zetyhubhu zonyangolindela ukufezekisa ukuchaneka okukhulu ngezinto ezincinci, ezibhityileyo kunye nezininzi eziguquguqukayo-lumen ityhubhus.Ekuhambeni kwexesha, ezininzi-lumeni-extrusionimvelisoimigca iya kuba ekhethekileyo ngakumbi kunye nobunye ubuchwepheshe be-extrusionzibandakanyiweezifana ne-multi-lumen extrusion, i-tapered extrusion, kunye ne-intermittent/interrupted extrusion.
Ixesha lokuposa: Aug-03-2022