Puas yog nitrinol yog super alloy?
Nitinol yog ib qho ze-equiatomic npib tsib xee thiab titanium hlau alloy nrog cov khoom tshwj xeeb, suav nrog superelasticity (tseem hu ua pseudoelasticity) thiab lub cim xeeb zoo.
Superelasticity / quasi-elasticity txhais tau hais tias Nitinol nthuav dav elasticity nyob rau hauv siab thiab tuaj yeem rov qab mus rau nws cov duab qub thaum lub siab tso tawm.
Nitinol's superelastic zog tso cai rau cov cuab yeej siv kho mob siv nws txhawm rau txhawm rau qis profile thaum muab tso rau hauv lub catheter hauv tus neeg mob lub cev. Implants ua los ntawm NiTi, xws li lub plawv li qub, nthuav mus rau qhov xav tau loj thiab cov duab ntawm qhov chaw cog qoob loo thiab nyob twj ywm hauv tus neeg mob lub cev, thaum NiTi cov cuab yeej kho mob, xws li ablation catheters, nthuav dav hauv lub cev, kho lub hom phiaj cov ntaub so ntswg, Ces compress rov retrieve.
Lub cim xeeb zoo txhais tau tias NiTi tuaj yeem nco qab nws cov duab qub thiab rov qab mus rau nws cov duab qub thaum rhuab. Piv txwv li, ib co catheter-xa implants yog tsim los nthuav nyob rau hauv lub cev kub rau lawv preformed zoo li mus tas li qhov chaw.
Ib daim ntawv thov kev cog lus rau cov duab cim xeeb ntawm nitinol yog tsim los ntawm lub plawv tsis ua hauj lwm pib Adona Medical, uas tab tom tsim lub plawv shunt ntaus ntawv uas tuaj yeem tswj cov nqi sib txawv.
"Nrog rau kev nce zuj zus mus rau kev siv cov txheej txheem cuam tshuam tsawg kawg nkaus los kho cov neeg mob, Nitinol tau dhau los ua cov khoom siv nrov ntawm kev xaiv vim nws muaj peev xwm rov qab mus rau nws cov qauv qub tom qab kev kho tshuab deformation lossis cua sov," FDA hais hauv Nitinol cov ntaub ntawv qhia. " ." Cov khoom no yog vim qhov hloov pauv hloov pauv ntawm cov theem austenite thiab martensite, uas tej zaum yuav kub hnyiab tau (zoo li lub cim xeeb) lossis kev ntxhov siab (pseudo-elasticity). Yog li ntawd, nrog stainless hlau, titanium los yog cobalt-chromium alloys Piv nrog cov tsoos hlau alloys, Nitinol tuaj yeem tiv taus ntau dua ntawm kev thim rov qab tsis muaj cov yas deformation.
Kev siv kho mob ntawm NiTi alloys suav nrog:
Cov cuab yeej siv lub plawv, xws li hloov lub plawv li qub uas tuaj yeem xa thiab muab tso rau hauv lub catheter (Medtronic's Harmony valve yog ib qho piv txwv)
Kev kho hniav, tshwj xeeb tshaj yog orthodontics nrog cov xov hlau thiab cov hlua khi siv los txuas cov hniav. "Sure Smile" braces yog ib qho piv txwv ntawm nws siv hauv orthodontics.
Endodontic kev kho mob, uas cuam tshuam nrog kev tu thiab kho cov kwj dej hauv paus thaum kho cov kwj dej
Hauv kev phais mob plab, cov khoom siv yog siv ntau yam khoom siv los txuas cov hnyuv tom qab tshem tawm cov kab mob.
Stents thiab stent retrievers, xws li Johnson & Johnson Embotrap ntaus ntawv, yog siv los tshem tawm cov ntshav txhaws hauv cov neeg mob stroke ischemic (thrombectomy)
orthopedic implants
Cov xov siv los cim thiab nrhiav cov qog mis
Cov kav dej rau ntau yam kev siv kho mob
ablation catheter taub
Mechanical actuation combats leeg nqaij atrophy (Harvard kawm)
Dissolvable ntaus ntawv (nyob rau hauv kev tshawb fawb ntawm MIT)
Synchron's catheter-insertable Stentrode lub hlwb tswj kev sib txuas cog lus
Surgical robots, xws li tus qauv rau kev phais mob qog nqaij hlav hauv menyuam yaus
Peripheral interventional pab kiag li lawm, xws li LimFlow thawj-ntawm-nws-zoo system, tiv thaiv amputation vim yog mob caj dab ischemia.
