Eminyakeni yamuva nje, ukucutshungulwa kwe-laser kuye kwasetshenziswa kakhulu ekukhiqizeni idivayisi yezokwelapha, njengokunembaimishini yokusika laser, imishini yokushisela nge-laser yezokwelapha, okokusebenza kwe-laser drilling, okokusebenza kokumaka nge-laser, njll. Le mishini ingasetshenziswa ukucubungula ama-stents ezokwelapha, ama-valve enhliziyo, Izingxenye Zokugoba ze-endoscopic kanye nazo zonke izinhlobo zamathuluzi okuhlinza.
Ama-fiber lasers athatha isikhundla esiphezulu embonini yokukhiqiza amathuluzi ezokwelapha ngenxa yezindleko zawo eziphansi, amandla amakhulu kanye nezinye izinzuzo.Amadivayisi e-laser afana ne-piccosecond ne-femtosecond anezinzuzo ezinhle mayelana nekhwalithi yokusika, kodwa isabelo sabo semakethe besincane uma kuqhathaniswa isikhathi eside.
Eminyakeni yamuva nje, ngezidingo ezikhulayo zemishini yezokwelapha enembayo yokusika ikhwalithi, ucwaningo lwedivayisi eyinhloko kanye nokuthuthukiswa kwemishini yezokwelapha nge-laser kuyashesha, futhi ama-laser asheshayo afana nama-femtoseconds azoba i-laser ekhethwayo ezimweni zesicelo sokukhiqiza imishini yezokwelapha, kanye nalawa ma-lasers. zingena njalo emikhakheni ehlukahlukene yokwelashwa.
Emishinini yezokwelapha ekhiqizwa kusetshenziswa ama-laser e-femtosecond, ama-stents emizwa nenhliziyo yiwo avame kakhulu.I-laser ye-femtosecond inika amandla ukucutshungulwa okunembile kwemikhiqizo ye-stent engenaburrless, yesikali esincane emikhiqizweni yensiza yezokwelapha, okubalulekile ukuvimbela ukusabela/ukwenqatshwa kwamasosha omzimba lapho kufakwa emzimbeni womuntu.Ama-stents amaningi ezokwelapha enziwe nge-nickel-titanium alloy, ukusetshenziswa okwedlule kobuchwepheshe bemishini ukucubungula le nickel-titanium alloy akulula, i-femtosecond laser isibe yindlela ephumelelayo.
Umqondo wokuthi "ukungenelela ngaphandle kokufakelwa" kuwumkhuba obalulekile ekuthuthukisweni okusha kwe-coronary interventional therapy.Ama-stents enhliziyo kuze kube manje angahlukaniswa abe izigaba ezine: ukunwetshwa kwebhaluni okumsulwa, ama-stents ensimbi angenalutho, ama-stents akhipha izidakamizwa, nama-biodegradable stents.
Ngokungafani nama-stents enhliziyo angaphambilini, ama-stents abolayo ama-scaffold enziwe ngezinto ze-polymer ezonakele (njenge-polylactic acid) ezingaboliswa futhi zimunce umzimba womuntu phakathi nenkathi ethile yesikhathi.Lapho imithambo yegazi ilungiswa kabusha, i-stent yonakala ngokuqondile emanzini kanye ne-carbon dioxide emzimbeni, uma kuqhathaniswa nensimbi evamile - kanye nama-stents ahlanganiswe nezidakamizwa.Ubufakazi bokucwaninga obukhona bubonisa ukuthi ukusebenza kahle kwe-biodegradable stents kuqinisekile, okungaqeda umthelela we-release bare stents ekubuyiseleni umsebenzi we-vascular futhi kunciphise izehlakalo ezimbi zesikhathi eside ngemuva kwe-PCI.
Ngezinzuzo zayo eziyingqayizivele, izinto ezibolayo ze-stent kancane kancane zizoba umkhuba ojwayelekile ekuthuthukisweni kobuchwepheshe bamazwe ngamazwe obunqamulela inhliziyo.Ekucutshungulweni kwalokhu kwaziswa kwe-polymer nezinye izinto ezingezona ezensimbi, uma i-fiber laser processing, impahla ingase ishiswe futhi iguqule ukwakheka kwamakhemikhali, okungase kukhiqize ubuthi bebhayoloji.Uma ufuna ukunciphisa le miphumela eshisayo futhi uqinisekise ikhwalithi yomphumela wokucubungula, ukukhetha kokuqala imishini ye-laser ye-femtosecond.
Enye yezinzuzo eziyinhloko zokusebenzisa i-femtosecond (10 ^ -15s) pulses uma kuqhathaniswa ne-nanosecond noma i-piccosecond pulses ukuthi isikhathi sokuxhumana phakathi kwe-beam nesiqeshana sokusebenza sincishiswa ngangokunokwenzeka, kunciphisa indawo ethintekile ukushisa endaweni yokusebenza futhi ngaleyo ndlela. ukunciphisa imiphumela emibi ebangelwa ukushisa ngokweqile.Kwamanye amadivaysi ezokwelapha, okuhlanganisa ama-stents, lokhu futhi kubalulekile ekuthuthukiseni i-biocompatibility yezinto zokufakelwa.
Ama-laser we-Femtosecond angacubungula imikhiqizo ngokunemba okuphezulu.Ama-coronary stents ezokwelapha ngokuvamile ahluka ngobubanzi ukusuka ku-2 kuye ku-5mm futhi ubude busuka ku-13 kuye ku-33mm.Idivayisi ye-laser ye-femtosecond iyanconywa uma ufuna imininingwane ye-stent yekhwalithi ephezulu kanye nokusikeka okunciphisa ubungozi boshintsho lwe-biopolymer noma i-oxidation yensimbi.Ngokombono wayo yonke inqubo yokukhiqiza i-stent, enye inzuzo ye-laser ye-femtosecond ukunciphisa izidingo zangemuva kokucubungula ngemuva kokusika i-stent.
I-Femtosecond laser cutting vs Fiber laser cutting effect
Intuthuko yakamuva kubuchwepheshe be-laser ye-femtosecond ifake amandla amakhulu ekucubunguleni idivayisi yezokwelapha enembayo, isusa imiphumela eshisayo ngenkathi inciphisa ukucubungula ngemva kokucubungula.
Isikhathi sokuthumela: Jul-25-2023