Dr BP van der Wal, Merit Medical Coatings da Charles Fields, Whitford Corporation, sun tattauna game da amfani da suturar PTFE a cikin na'urorin kiwon lafiya na ciki.
An yi tattaunawa da yawa game da suturar PTFE a cikin kasuwar kayan aikin likitancin jijiyoyin jini.A watan Nuwamba, 2015 da FDA ta ba da wani aminci sadarwa magana game da sakamakon shafi delamination a kan intravascular na'urorin a kan diddige da dama rahoton aukuwa.Domin shekaru da yawa, PTFE coatings kasance shiru abokin tarayya, rage gogayya kowace rana a catheterization hanyoyin.Sun zama cikakke, gamawar kayayyaki akan daidaitattun kayan aikin catheter.
Matsa lamba mai ci gaba a cikin masana'antar sinadarai koyaushe yana tilasta canji.Masu karatu na iya tunawa cewa PFOA (Perfluorooctanic acid) an tsara shi daga rafin masana'antar fluoropolymer.Wannan canjin ya yi tasiri a kan aikin shafi biyu da buƙatun aikace-aikace.Wannan ba sabon abu bane.Ana tilasta wa masana'antun sutura akai-akai don magance sauye-sauyen albarkatun kayan aiki waɗanda suka haɗa da kaushi, pigments, da resins.Wannan bai haɗu da kyau da kasuwar kayan aikin likita ba.Yayin da masana'antar na'urorin likitanci suna da matakai don magance canjin kayan aiki, yana ɗaukar lokaci mai ɗaukar nauyi kuma yawanci mai tsada don aiwatarwa.Waɗannan canje-canje suna bayyana suna ƙaruwa yayin da buƙatun duniya don samfuran kore da aminci sun zama direba mai mahimmanci.Abubuwan da ake kimantawa na yanzu sun haɗa da Chrome 6 (chromium hexavalent) da NMP (N-methyl-2-pyrrolidone).Waɗannan su ne kayan aiki masu mahimmanci a cikin kera yawancin kayan kwalliyar fluoropolymer (PTFE) da aka yi amfani da su akan abubuwan catheter.Masu kera na'urorin likitanci na jijiyoyin jini za su buƙaci shirya don ɗaukar waɗannan sauye-sauyen sutura don tabbatar da tsarin suturar sun cika buƙatun amfanin ƙarshen su.
Merit Medical Coatings, wanda wurin rufe waya yake a Venlo, Netherlands, yana ɗaukar hanya mai fa'ida don magance matsalolin ƙa'ida da ake sanyawa masana'antar fluoropolymer.Dokta BP van der Wal, babban injiniya ya ce: "Aikace-aikacen sutura (PTFE) zuwa wayoyi na likita yana buƙatar ƙwarewa mai yawa.Ƙananan girman da sassauƙa na na'urorin likitanci da yawa suna sa tsarin sutura ya zama ƙalubale kuma gaba ɗaya ya bambanta da tsarin sutura don lebur da tsattsauran ra'ayi kamar kayan dafa abinci.Mahimmancin ƙarancin ƙarfin zafi don kayan aiki kamar wayoyi suna buƙatar lokutan sarrafawa da zafin jiki daban-daban. "
Akwai hanyoyi guda biyu daban-daban don aikace-aikacen sutura: Pre-shafi da bayan-shafi.A cikin tsari na riga-kafi, ana amfani da suturar da aka yi amfani da shi a kan substrate kafin taro.Gabaɗaya, ana amfani da tsari na riga-kafi don yin aiki mai girma wanda keɓaɓɓiyar ke ba da izinin sarrafa reel-to-reel.Pre-shafi ne mai ci gaba da tsari kyale ga high shafi gudu da kuma sosai m sakamako sakamako ga cikakken reel na abu.Don jagorar wayoyi, wannan yana nufin ana amfani da murfin a kan waya a cikin tsari na reel-to-reel kafin murɗawa.Saboda haka rufin dole ne ya jure duk sojojin da aka yi amfani da su a cikin tsarin taro.Misali, bai kamata rufin ya ɓata daga wayar ba yayin murɗawa.Wannan yana buƙatar mai yawa daga suturar saboda manyan sojojin da aka yi amfani da su a kan waya da sakamakon lalacewa.Sigogi irin su kauri mai kauri suna da mahimmanci don yin suturar sassauƙa da ƙarfi sosai.
A bayan-shafi, da catheter waya tafiyar matakai an riga an kammala.Bayan-shafi tsari ne na batch kuma ana zaɓar idan abin da ke ƙasa bai ba da izinin sarrafa reel-to-reel ba, kamar waya tare da tip ƙasa.Bayan-shafi kuma yana ba da ƙarin sassauci don kawai suturta wani ɓangare na substrate.Ta hanyar rufe wani yanki na substrate, ana iya barin makada masu alamar a saman.Fim ɗin busassun na gaba ba dole ba ne ya yi tsayayya da manyan injiniyoyi na coiling da sauran hanyoyin masana'antar waya.Wannan baya sanya aikace-aikacen shafi ƙasa da buƙata.Tare da pre-shafi tsari shafi adhesion gazawar za a lura a lokacin da taro tsari.Tare da tsarin bayan-rufin rufin mannewa gazawar na iya faruwa yayin saduwa da haƙuri idan ba a kama shi ba yayin binciken QA.Wannan na iya zama yanayi mai haɗari yana sanya buƙatu masu tsananin gaske akan tsarin aikace-aikacen shafa.
Don suturar fluoropolymer, kadarar da ba ta da tsayi da kuma mannewa mai kyau ga ma'auni sun saba wa juna.Bugu da ƙari, galibi ana gina wayoyi na likitanci da ƙarfe marasa ƙarfi, irin su bakin karfe 304 da Nitinol, suna ƙara rikitar da dumama da hanyoyin gyarawa.Sau da yawa ana amfani da sutura masu yawa don samun mannewa mai kyau ga ma'auni ta amfani da maɗauri mai ɗaure da gashin gashi mai wadata na fluoropolymer.Tabbas, wannan yana sa tsarin aikace-aikacen shafi ya fi rikitarwa saboda dole ne a yi amfani da yadudduka da yawa.An sami sabbin abubuwa da yawa waɗanda aka haɓaka tsarin sutura ɗaya waɗanda ke ba da sakamako iri ɗaya: mannewa mai kyau ga ma'auni da ƙoshin ƙoshin ƙoshin lafiya.Tsarin rufewa, duk da haka, yana tasiri sosai ga ingancin wannan tsarin kai-tsaye.
Lokacin aikawa: Jul-01-2017