Dr BP van der Wal, Merit Medical Coatings na Charles Fields, Whitford Corporation, na-atụle iji mkpuchi PTFE na ngwaọrụ ahụike intravascular.
Enweela ọtụtụ mkparịta ụka gbasara mkpuchi PTFE na ahịa ngwaọrụ ahụike vaskụla.Na Nọvemba, 2015 FDA nyere nkwurịta okwu nchekwa na-ezo aka mmetụta nke mkpuchi mkpuchi na ngwaọrụ intravascular na ikiri ụkwụ nke ọtụtụ ihe ndị a kọrọ.Ruo ọtụtụ afọ, mkpuchi PTFE bụ onye mmekọ na-agbachi nkịtị, na-ebelata esemokwu kwa ụbọchị na usoro catheterization.Ha abụrụla ebe a na-emecha ngwa ahịa na akụrụngwa catheter ọkọlọtọ.
Nrụgide usoro iwu na-aga n'ihu na ụlọ ọrụ kemịkalụ na-amanye mgbe niile mgbanwe.Ndị na-agụ akwụkwọ nwere ike icheta na a na-ahazi PFOA (Perfluorooctanic acid) site na mmiri na-emepụta fluoropolymer.Mgbanwe a nwere mmetụta na arụmọrụ mkpuchi yana ngwa chọrọ.Nke a abụghị ihe ọhụrụ.A na-amanye ndị na-emepụta mkpuchi mgbe niile ka ha na-emeso mgbanwe akụrụngwa na-arụ ọrụ gụnyere ihe mgbaze, pigmenti, na resins.Nke a adịghị agwakọta nke ọma na ahịa ngwaọrụ ọgwụ.Ọ bụ ezie na ụlọ ọrụ ngwaọrụ ahụike nwere usoro iji dozie mgbanwe ihe onwunwe, ọ na-abụkarị ọrụ na-ewe oge ma na-adịkarị ọnụ iji mejuputa ya.Mgbanwe ndị a yiri ka ọ na-abawanye ka ihe achọrọ zuru ụwa ọnụ maka ngwaahịa green na dị nchebe na-aghọ onye ọkwọ ụgbọala dị njọ karị.Ngwa ngwa a na-enyocha ugbu a gụnyere Chrome 6 (hexavalent chromium) na NMP (N-methyl-2-pyrrolidone).Ihe ndị a bụ isi ihe na-emepụta ọtụtụ ihe mkpuchi fluoropolymer (PTFE) ejiri na akụrụngwa catheter.Ndị na-emepụta ngwaọrụ ahụike vaskụla ga-adị mkpa ịkwado iji nabata mgbanwe mkpuchi mkpuchi a iji hụ na usoro mkpuchi na-emezu ihe ha chọrọ iji mee ihe njedebe.
Uwe mkpuchi ahụike Merit, nke ụlọ ọrụ mkpuchi waya ya dị na Venlo, Netherlands, anọwo na-eme usoro na-arụsi ọrụ ike na-eleba anya nrụgide usoro iwu a na-etinye na ụlọ ọrụ fluoropolymer.Dr BP van der Wal, onye injinia ukwu kwuru, sị: “Ngwa nke mkpuchi (PTFE) na waya ahụike chọrọ nka dị ukwuu.Obere obere na mgbanwe nke ọtụtụ ngwaọrụ ahụike na-eme ka usoro mkpuchi ahụ bụrụ ihe ịma aka na kpamkpam dị iche iche na usoro mkpuchi maka ihe ndị dị larịị na nke siri ike dị ka cookware.Ike okpomọkụ dị ala nke ukwuu maka ihe ndị dị ka wires na-eme ka oge nhazi na ọnọdụ okpomọkụ dị iche iche dị iche iche. "
Enwere ụzọ abụọ dị iche iche maka ngwa mkpuchi: mkpuchi mkpuchi na mkpuchi mkpuchi.Na usoro mkpuchi mkpuchi, a na-etinye ihe mkpuchi ahụ na ntinye tupu mgbakọ.N'ozuzu, a na-eji usoro mkpuchi mkpuchi ahụ mee ihe maka nhazi ụda dị elu nke ihe ntinye na-enye ohere nhazi reel-to-reel.Mkpuchi mkpuchi bụ usoro na-aga n'ihu na-enye ohere maka ngwa ngwa mkpuchi dị elu na ihe mkpuchi na-agbanwe agbanwe maka ihe zuru ezu nke ihe.Maka ntuziaka, nke a pụtara na a na-etinye ihe mkpuchi ahụ na waya na usoro reel-to-reel tupu ịgbakọta.N'ihi ya, mkpuchi ahụ aghaghị iguzogide ike niile a na-eji na mgbakọ ahụ.Dịka ọmụmaatụ, mkpuchi ahụ ekwesịghị delaminate site na waya mgbe ị na-agbakọta.Nke a na-achọ ihe dị ukwuu site na mkpuchi ahụ n'ihi nnukwu agha ndị a na-etinye na waya na nrụrụ na-akpata.Parameters dị ka mkpuchi mkpuchi dị oke mkpa iji mee ka mkpuchi ahụ gbanwee ma sie ike.
Na mkpuchi mkpuchi, agwụlarị usoro mgbakọ waya catheter.Mkpuchi mkpuchi bụ usoro ogbe ma họrọ ya ma ọ bụrụ na mkpụrụ osisi anaghị ekwe ka nhazi reel-to-reel, dị ka waya nwere ọnụ ala.Mkpuchi mkpuchi na-enyekwara m mgbanwe karịa naanị uwe akụkụ nke mkpụrụ.Site na ikpuchi akụkụ nke mkpụrụ, enwere ike ịhapụ eriri akara n'elu.Ihe nkiri akọrọ na-esote agaghị eguzogide nnukwu ike ọrụ nke coiling na usoro mmepụta waya ndị ọzọ.Nke a anaghị eme ka ngwa mkpuchi ahụ dị obere.Na tupu mkpuchi usoro mkpuchi adhesion ọdịda ga-hụrụ n'oge mgbakọ usoro.Na usoro mkpuchi mkpuchi mkpuchi ọdịda nwere ike ime n'oge kọntaktị onye ọrịa ma ọ bụrụ na ejideghị ya n'oge nyocha QA.Nke a nwere ike ịbụ ọnọdụ dị ize ndụ na-etinye nnukwu ihe achọrọ n'elu usoro ngwa mkpuchi.
Maka mkpuchi fluoropolymer, ihe onwunwe na-adịghị mma na ezigbo mmachi na mkpụrụ osisi na-emegide ibe ya.Na mgbakwunye, a na-eji ọla ndị nwere ezi uche arụ ọrụ waya ahụike, dị ka igwe anaghị agba nchara 304 na Nitinol, na-eme ka usoro ikpo ọkụ na nhazi ya sie ike.Ọtụtụ mgbe, a na-eji mkpuchi multi-layer iji nweta ezigbo mmachi na mkpụrụ osisi na-eji akwa mkpuchi na mkpuchi mkpuchi fluoropolymer.N'ezie, nke a na-eme ka usoro ntinye mkpuchi ahụ dịkwuo mgbagwoju anya n'ihi na a ghaghị itinye ọtụtụ ọkwa.Enweela ọtụtụ mmepe mkpuchi ọhụrụ nke e mepụtara usoro otu uwe na-enye otu mmetụta ahụ: ezigbo mmachi na mkpụrụ na fluoropolymer ọgaranya topcoat.Usoro mkpuchi, Otú ọ dị, na-emetụta oke arụmọrụ nke usoro nhazi onwe onye a.
Oge nzipu: Jul-01-2017