Kubuchwepheshe bezokwelapha obuthuthuka ngokushesha banamuhla, izinto ze-polymer ezibizwa ngokuthii-thermoplastic polyurethane (TPU)ivusa uguquko buthule. Ifilimu ye-TPU kaI-Yantai Linghua New Material Co., Ltd.isiba yinto ebalulekile ekhiqizweni kwamadivayisi ezokwelapha asezingeni eliphezulu ngenxa yokusebenza kwayo okuhle kakhulu kanye nokuhambisana kwayo nezinto eziphilayo. Ukuba khona kwayo kutholakala yonke indawo, kusukela ezikhwameni zokufaka ezivamile kuya kumadivayisi ezempilo asezingeni eliphezulu agqokwayo.
1) Isici esiyinhloko: Kungani imboni yezokwelapha ithanda i-TPU?
Ifilimu ye-TPUakuyona ifilimu yepulasitiki evamile. Ihlanganisa ukuqina kwerabha namandla epulasitiki, ihlinzeka ngokuguquguquka okungakaze kubonwe ngaphambili kokuklama idivayisi yezokwelapha.
-Ukuhambisana kahle kwezinto eziphilayo kanye nokuphepha: I-TPU yezinga lezokwelapha inamathela ngokuqinile ezindinganisweni zokuhambisana kwezinto eziphilayo njenge-ISO 10993, iqinisekisa ukuthi akukho ukuzwela noma ukusabela okungenabo ubuthi lapho ithinta izicubu zomuntu noma igazi, okunciphisa kakhulu ingozi yesiguli.
-Ukusebenza kahle kakhulu kwemishini: Ifilimu ye-TPU inamandla aphezulu okudonseka (ngokuvamile >30 MPa), ukunwebeka okuphezulu kakhulu lapho ikhefu liphumile (>500%), kanye nokumelana okuhle kakhulu nokudabuka (>30 kN/m), okwenza ithuluzi liqine kakhulu futhi likwazi ukumelana nokwelulwa okuphindaphindiwe, ukugoba, kanye nokucindezelwa ngaphandle kokulimala.
-Umswakama kanye nokuvuleka komoya: Izakhiwo zefilimu ye-TPU ezinezimbobo noma ezihlala emanzini zivumela umhwamuko wamanzi ukuthi udlule ngokukhululekile ngenkathi uvimba amanzi angcolile namagciwane. Lokhu kubalulekile ekubopheni amanxeba kanye nezingubo zokuzivikela zokuhlinzwa, ezingagcina isikhumba somile, zikhuthaze ukuphulukiswa, futhi zithuthukise induduzo yabasebenzi bezokwelapha.
-Ukuthinta okuthambile okuhle kakhulu nokusobala: Ifilimu ye-TPU inokwakheka okuthambile, enikeza ukulingana okukhululekile nokungenamthungo emzimbeni womuntu; Ukubonakala kwayo okuphezulu kwenza abasebenzi bezokwelapha bakwazi ukubona inqubo yokufaka noma ukuphulukiswa kwenxeba.
-Ukuhlanzeka: Ifilimu ye-TPU ingamelana nezindlela ezahlukahlukene zokuhlanza, okuhlanganisa i-ethylene oxide (EO), imisebe ye-gamma, kanye nemisebe ye-electron, okuqinisekisa ukuhlanzeka nokuphepha kwemikhiqizo yokugcina.
2) Isimo sokusebenza: Kusukela ekunakekelweni “okungabonakali” kuya phambili kwezobunhloli
Lezi zici zeIfilimu ye-TPUkwenze kukhanye emkhakheni wezokwelapha:
-Uhlelo lokungenisa nokulethwa kwemithi: Njengoba kuyizinto ezingaphakathi nangaphandle zezikhwama zokungenisa eziphezulu, izikhwama zokudla okunempilo, kanye nezikhwama ze-peritoneal dialysis, ukuguquguquka kwe-TPU kanye nokumelana nokuhlikihla kuqinisekisa ukuzinza kwesixazululo somuthi ngesikhathi sokuthuthwa nokusetshenziswa, futhi ukubonakala kwayo kwenza kube lula ukubonwa kwezinga loketshezi.
-Ukunakekelwa kwamanxeba kanye nokubopha: Amabhande amasha angangeni manzi futhi aphefumulayo kanye nezinhlelo zokwelapha amanxeba angenamandla (NPWT) zisebenzisa kakhulu ifilimu ye-TPU. Ingahlukanisa ngempumelelo ukungcola kwangaphandle futhi ikhiphe umswakama enxebeni, idale indawo ekahle yokuphulukiswa kwamanxeba.
-Imikhiqizo yokuvikela ngokuhlinzwa: esetshenziselwa ukukhiqiza izendlalelo eziphefumulayo nezilwa namagciwane zezingubo zokugqoka zokuhlinzwa, izingubo zokuhlukanisa, kanye nezingubo zokuzivikela, okuhlinzeka ngokuvikelwa okubalulekile ngenkathi kuxazulula izinkinga zemikhiqizo yendwangu yendabuko engalukiwe evalekile futhi engakhululekile.
-Amadivayisi ezokwelapha amasha: Ifilimu ye-TPU isibe yingxenye ebalulekile kumadivayisi angenelelayo njenge-catheter yebhaluni yezidakamizwa kanye namadivayisi okusiza inhliziyo okwenziwa ngenxa yokuhambisana kwayo kahle kwegazi kanye nokuguquguquka kwayo. Ngaphezu kwalokho, kumadivayisi ezokwelapha agqokwayo njengama-smart patches, ifilimu ye-TPU isebenza njengesisekelo esithintana ngqo nesikhumba, okuqinisekisa induduzo kanye nokuthembeka kwesikhathi eside kwedivayisi.
3) Isisekelo sekhwalithi: amapharamitha ayisihluthulelo kanye nezindinganiso zokuhlola
Ukuqinisekisa ukuthi yonke inqwaba yefilimu ye-TPU ihlangabezana nezidingo zezokwelapha eziqinile, sibhekisela ochungechungeni lwezindinganiso zomhlaba wonke ezakha itshe lesisekelo lekhwalithi yayo:
-Izakhiwo zemishini:
Amandla okuthamba kanye nokwelulwa ngesikhathi sokuphumula: I-ASTM D412 ejwayelekile esetshenziswa njalo iqinisekisa ukuthi ifilimu inamandla anele kanye nokuqina.
Amandla okudabuka: I-ASTM D624 ejwayelekile esetshenziswa kakhulu ilinganisa ikhono layo lokumelana nokusabalala kwezinyembezi.
-Ukuhambisana kwezinto eziphilayo: Kumelwe uphumelele ukuhlolwa okujwayelekile kochungechunge lwe-ISO 10993, okuyisidingo esiyimpoqo sokugunyazwa kokumaketha kwamadivayisi ezokwelapha.
-Ukusebenza kwesithiyo:
Izinga Lokudlulisa Umswakama (WVTR): Izindinganiso ezifana ne-ASTM E96 zilinganisa ukuvunyelwa komoya wamanzi, kanti amanani aphezulu abonisa ukuvunyelwa komoya okungcono.
Izakhiwo zokuvimbela uketshezi: izindinganiso ezifana ne-ASTM F1670/F1671 (ezisetshenziselwa ukuhlola ukumelana nokungena kwegazi lokwenziwa kanye negciwane).
-Izici zomzimba:
Ubulukhuni: I-ASTM D2240 (ubulukhuni base-Shore) ivame ukusetshenziswa, kanti i-TPU yezinga lezokwelapha ivame ukuba phakathi kuka-60A no-90A ukuze kulondolozwe ukuguquguquka.
Umbono Wesikhathi Esizayo: Isahluko Esisha Kwezobunhloli Nentuthuko Eqhubekayo
4) Uma sibheka phambili esikhathini esizayo, amathuba entuthukoIfilimu ye-TPUemkhakheni wezokwelapha zibanzi futhi zicacile:
-Ukuhlanganiswa okuhlakaniphile: Esikhathini esizayo, amafilimu e-TPU azohlanganiswa ngokujulile nama-microelectronics kanye nezinzwa ukuthuthukisa "amafilimu ahlakaniphile" angaqapha imingcele yomzimba efana nokushaya kwenhliziyo, ushukela wegazi, kanye nokwakheka kokujuluka ngesikhathi sangempela, okukhuthaza ukuthuthukiswa kwemithi eyenzelwe wena.
-I-TPU Ebolayo: Njengoba ulwazi olukhulayo ngokuvikelwa kwemvelo lukhula, ukuthuthukiswa kwezinto ze-TPU ezingalawulwa ukuthi zonakale noma zimuncwe umzimba womuntu emzimbeni kuzoba yisiqondiso esiyinhloko sesizukulwane esilandelayo samadivayisi afakelwayo, njenge-stents yemithambo yegazi emuncwayo kanye ne-stents yobunjiniyela bezicubu.
-Ukuguqulwa kobuso obusebenzayo: Ngokunikeza amafilimu e-TPU ngamagciwane, i-anticoagulant, noma ukukhuthaza ngenkuthalo amandla okukhula kwamaseli ngokusebenzisa ubuchwepheshe bobuso, ukusetshenziswa kwawo ezifakelweni eziphezulu kanye nokwelashwa kwamanxeba okuyinkimbinkimbi kuzokwandiswa kakhulu.
I-Yantai Linghua New Material Co., Ltd. ikholelwa ukuthi ifilimu ye-TPU ikhule isuka ekubeni 'yinto yokufaka esikhundleni' yaba 'yinto enika amandla'. Inhlanganisela yayo yokusebenza eyingqayizivele ivula izici ezintsha zokusungula amadivayisi ezokwelapha. Njengamanje sisesikhathini segolide sentuthuko yezokwelapha eqhutshwa yisayensi yezinto, futhi ngokungangabazeki i-TPU ingenye yezinkanyezi zalesi sikhathi.
Isikhathi sokuthunyelwe: Okthoba-09-2025