Femtosecond laser imathandizira kukula kwachangu kwakupanga kolondola kwamankhwala a stent

M'zaka zaposachedwa, laser processing yakhala ikugwiritsidwa ntchito kwambiri popanga zida zamankhwala, monga kulondolazida zodulira laser, zida zamankhwala zowotcherera laser, zida zobowola laser, zida zolembera laser, ndi zina zotere. Zidazi zitha kugwiritsidwa ntchito popanga ma stents azachipatala, ma valve amtima, Endoscopic Bending Sections ndi mitundu yonse ya zida zopangira opaleshoni.

Ma fiber lasers ali ndi udindo waukulu pamakampani opanga zida zamankhwala chifukwa cha mtengo wawo wotsika, mphamvu zowonjezedwa komanso zabwino zina.Zida za laser monga picosecond ndi femtosecond zili ndi ubwino waukulu podula khalidwe, koma gawo lawo la msika lakhala laling'ono kwa nthawi yaitali.

M'zaka zaposachedwa, ndi kuchuluka kwa zofunikira za zida zachipatala zolondola kwambiri pakudula, kufufuza kwakukulu kwa chipangizo ndi chitukuko cha zida zamankhwala za laser kumafulumizitsa, ndipo ma lasers a ultrafast monga femtoseconds adzakhala laser yokondedwa pazida zopangira zida zamankhwala, ndipo ma laser awa. akuloŵa m’mbali zosiyanasiyana za chithandizo chamankhwala.

Pazida zamankhwala zopangidwa pogwiritsa ntchito ma lasers a femtosecond, ma stents a minyewa ndi amtima ndi omwe amapezeka kwambiri.Laser ya femtosecond imathandizira makina olondola azinthu zopanda burrless, ma micron-scale stent pazida zamankhwala, zomwe ndizofunikira kuti chitetezo chamthupi chitetezedwe / kukanidwa chikalowetsedwa m'thupi la munthu.Ma stents ambiri azachipatala amapangidwa ndi aloyi ya nickel-titaniyamu, kugwiritsa ntchito ukadaulo wamakina m'mbuyomu pokonza aloyi ya nickel-titaniyamu sikophweka, femtosecond laser yakhala njira yothandiza.

Lingaliro la "kulowererapo popanda kuikidwa" ndilofunika kwambiri pa chitukuko chatsopano cha chithandizo chamankhwala.Mapiritsi amtima mpaka pano atha kugawidwa m'magawo anayi: kukulitsa kwa baluni, zitsulo zopanda kanthu, zopangira mankhwala osokoneza bongo, ndi zowola.

Mosiyana ndi ma stents amtima am'mbuyomu, ma stents owonongeka ndi ma scaffolds opangidwa ndi zinthu zowonongeka za polima (monga polylactic acid) zomwe zimatha kuwola ndikumwedwa ndi thupi la munthu pakapita nthawi.Mitsempha yamagazi ikakonzedwanso, stent imawonongeka mwachindunji m'madzi ndi carbon dioxide m'thupi, poyerekeza ndi zitsulo zachikhalidwe - ndi zopaka mankhwala.Umboni womwe ulipo wa kafukufuku umasonyeza kuti mphamvu ya ma stents owonongeka ndi yotsimikizika, yomwe imatha kuthetsa mphamvu ya zotsalira zopanda kanthu pa kubwezeretsa ntchito ya mitsempha ndi kuchepetsa zochitika za nthawi yayitali pambuyo pa PCI.

Ndi ubwino wake wapadera, zipangizo zowonongeka zowonongeka pang'onopang'ono zidzakhala njira yodziwika bwino pakupanga ukadaulo wapadziko lonse wa stent wapadziko lonse lapansi.Mu processing wa zinthu polima izi ndi zinthu zina sanali zitsulo, ngati CHIKWANGWANI laser processing, zakuthupi akhoza usavutike mtima ndi kusintha zikuchokera mankhwala, amene angabweretse kwachilengedwenso kawopsedwe.Ngati mukufuna kuchepetsa zotsatirazi matenthedwe ndi kuonetsetsa khalidwe la processing zotsatira, kusankha choyamba ndi femtosecond laser zida.

Chimodzi mwazabwino zazikulu zogwiritsira ntchito femtosecond (10 ^ -15s) pulses poyerekeza ndi nanosecond kapena picosecond pulses ndikuti nthawi yolumikizana pakati pa mtengo ndi chogwirira ntchito imachepetsedwa momwe mungathere, kuchepetsa kutentha komwe kumakhudzidwa ndi chogwirira ntchito ndipo motero. kuchepetsa zotsatira zoyipa zomwe zimachitika chifukwa cha kutentha kwambiri.Pazida zina zamankhwala, kuphatikiza ma stents, izi ndizofunikiranso pakuwongolera biocompatibility ya implants.

Ma lasers a Femtosecond amatha kukonza zinthu molondola kwambiri.Medical coronary stents nthawi zambiri amakhala m'mimba mwake kuchokera 2 mpaka 5mm ndi kutalika kuchokera 13 mpaka 33mm.Chipangizo cha laser cha femtosecond chimalimbikitsidwa ngati mukufuna tsatanetsatane wa stent wapamwamba kwambiri ndi mabala omwe amachepetsa chiopsezo cha kusintha kwa biopolymer kapena okosijeni wachitsulo.Kuchokera pamalingaliro a njira yonse yopangira stent, mwayi wina wa laser femtosecond ndikuchepetsa zosowa zapambuyo pokonza pambuyo podula stent.

Femtosecond laser kudula vs Fiber laser kudula zotsatira

Kupita patsogolo kwaposachedwa kwaukadaulo wa laser wa femtosecond kwathandizira kwambiri pakukonza zida zachipatala, ndikuchotsa zotulukapo zamatenthedwe ndikuchepetsa kukonzanso pambuyo.