Kwiminyaka yakutshanje, ukusetyenzwa kwelaser kuye kwanda ukusetyenziswa kwimveliso yezixhobo zonyango, njengokuchanekaizixhobo zokusika laser, izixhobo ze-laser welding zonyango, izixhobo zokugaya i-laser, izixhobo zokumakisha i-laser, njl. Ezi zixhobo zingasetyenziselwa ukucubungula i-stents zonyango, i-stents ye-valve yentliziyo, i-endoscopic Ukugoba amacandelo kunye nazo zonke iintlobo zezixhobo zotyando.
IiFiber lasers zikwindawo ephambili kwishishini lokwenziwa kwezixhobo zonyango ngenxa yexabiso eliphantsi, amandla anokunyuka kunye nezinye izibonelelo.Izixhobo zeLaser ezifana nepicosecond kunye ne-femtosecond zineenzuzo ezinkulu malunga nomgangatho wokusika, kodwa isabelo sabo semarike besincinci ixesha elide.
Kwiminyaka yakutshanje, kunye neemfuno ezikhulayo zezixhobo zonyango ezichanekileyo zokusika umgangatho, uphando lwesixhobo esingundoqo kunye nophuhliso lwezixhobo zonyango lwe-laser luyakhawuleza, kwaye iilaser ze-ultrafast ezifana ne-femtoseconds ziya kuba yi-laser ekhethiweyo kwimiba yesicelo sokwenza izixhobo zonyango, kwaye ezi lasers. zisoloko zingena kwiinkalo ezahlukahlukeneyo zonyango.
Kwizixhobo zonyango ezenziwe kusetyenziswa ii-laser ze-femtosecond, i-neurological and cardiovascular stents zezona zixhaphakileyo.I-laser ye-femtosecond yenza ukuchaneka kwemveliso ye-burrless, i-micron-scale stent kwiimveliso zesixhobo sonyango, nto leyo ibalulekileyo ekuthinteleni ukusabela/ukwaliwa xa ifakelwe emzimbeni womntu.Uninzi lwee-stents zonyango zenziwe nge-nickel-titanium alloy, ukusetyenziswa kwexesha elidlulileyo kobuchwepheshe bemishini ukucubungula le nickel-titanium alloy akulula, i-laser ye-femtosecond ibe yindlela esebenzayo.
Ingcamango "yokungenelela ngaphandle kokufakelwa" yindlela ebalulekileyo ekuphuhlisweni okutsha kwe-coronary interventional therapy.Izinti zentliziyo ukuza kuthi ga ngoku zinokwahlulwa zibe ngamanqanaba amane: ibhaluni esulungekileyo yokuhlanjululwa, izitenti zentsimbi ezingenanto, izitenti ezikhupha iziyobisi, kunye nezinti ezinokubola.
Ngokungafaniyo ne-stents yentliziyo yangaphambili, i-biodegradable stents zi-scaffolds ezenziwe ngezinto zepolymer ezonakeleyo (ezifana ne-polylactic acid) ezinokubola kwaye zifunxwe ngumzimba womntu ngexesha elithile.Xa imithwalo yegazi ihlaziywa, i-stent iyancipha ngokuthe ngqo emanzini kunye ne-carbon dioxide emzimbeni, xa kuthelekiswa nentsimbi yendabuko - kunye ne-stent-coated-coated stents.Ubungqina obukhoyo bophando bubonisa ukuba ukusebenza kwe-biodegradable stents kuqinisekile, okunokuphelisa impembelelo ye-stents eseleyo ekubuyiseleni umsebenzi we-vascular kunye nokunciphisa iziganeko zexesha elide elibi emva kwe-PCI.
Ngeengenelo zayo ezizodwa, imathiriyeli yestent eyonakalayo iya kuthi ngokuthe ngcembe ibe yeyona ndlela iphambili kuphuhliso lwetekhnoloji ye-stent yentliziyo yamazwe ngamazwe.Xa kusetyenzwa le mathiriyeli polymer kunye nezinye izinto non-metallic, ukuba i-fiber laser processing, izinto zingafudumala kwaye zitshintshe ukwakheka kweekhemikhali, ezinokuthi zivelise ubuthi be-biological.Ukuba ufuna ukunciphisa ezi ziphumo ze-thermal kwaye uqinisekise umgangatho wesiphumo sokusebenza, ukhetho lokuqala luyisixhobo se-laser femtosecond.
Enye yeenzuzo eziphambili zokusebenzisa i-femtosecond (10 ^ -15s) pulses xa kuthelekiswa ne-nanosecond okanye i-piccosecond pulses kukuba ixesha loqhagamshelwano phakathi kwe-beam kunye ne-workpiece liyancipha kangangoko kunokwenzeka, ukunciphisa indawo echaphazelekayo yokushisa kwi-workpiece kwaye ngaloo ndlela. ukunciphisa imiphumo emibi ebangelwa ukushisa okugqithisileyo.Kwezinye izixhobo zonyango, kubandakanywa i-stents, oku kubalulekile ekuphuculeni ukuhambelana kwezinto eziphilayo.
I-laser ye-Femtosecond inokucubungula iimveliso ngokuchaneka okuphezulu.Izinti zeKoronari zonyango zidla ngobubanzi ukusuka kwi-2 ukuya kwi-5mm kunye nobude ukusuka kwi-13 ukuya kwi-33mm.Isixhobo se-laser ye-femtosecond siyacetyiswa ukuba ufuna iinkcukacha ezikumgangatho ophezulu we-stent kunye nokusikwa okunciphisa umngcipheko wokutshintsha kwe-biopolymer okanye i-oxidation yesinyithi.Ngokombono wayo yonke inkqubo yokuvelisa i-stent, enye inzuzo ye-laser ye-femtosecond kukunciphisa iimfuno zasemva kokulungiswa emva kokusika i-stent.
Ukusika i-Femtosecond laser vs iFayibha laser yokusika isiphumo
Inkqubela phambili yamva nje kwitekhnoloji ye-laser ye-femtosecond ifake amandla amakhulu ekusetyenzweni kwesixhobo sonyango esichanekileyo, ukuphelisa iziphumo ezishushu ngelixa kuncitshiswa ukusetyenzwa kwangemva.
Ixesha lokuposa: Jul-25-2023