Nickel-titanium alloys: cov khoom siv hnub qub nce hauv kev kho mob

Nitinol yog cov hlau tshwj xeeb uas muaj ob lub ntsiab lus: nickel (Ni) thiab titanium (Ti). Nws lub npe "Nitinol" yog kev sib xyaw ua ke ntawm nws cov muaj pes tsawg leeg thiab nws qhov chaw ntawm kev tshawb pom, Naval Ordnance Laboratory hauv Maryland, Tebchaws Asmeskas (Ni-Ti-NOL).
Ni-Ti-NOL muaj ob yam zoo kawg li: zoo li lub cim xeeb nyhuv thiab superelasticity. Cov khoom no ua rau nws muaj txiaj ntsig zoo hauv ntau yam kev siv engineering thiab kev kho mob.
Superelasticity: Nitinol yog superelastic thiab tuaj yeem rov qab mus rau nws cov duab qub txawm tias tom qab loj deformations. Qhov no ua rau nws muaj txiaj ntsig zoo hauv kev tsim cov khoom siv kho mob thiab cov khoom cog uas yuav tsum tau tiv thaiv kev deformation thiab rov qab mus rau lawv cov qauv qub, xws li stents thiab cog qoob loo.
Cov nyhuv nco zoo: Nitinol muaj cov nyhuv nco zoo, uas txhais tau hais tias nws tuaj yeem nco thiab rov qab mus rau qhov kev txiav txim siab ua ntej ntawm qhov kub thiab txias. Qhov no tso cai rau nws hloov mus rau qhov sib txawv ntawm qhov kub thiab txias hauv lub cev thiab siv rau hauv kev tsim cov khoom siv kho mob thiab cov khoom cog uas yuav tsum tau hloov kho, xws li stents, cog thiab catheters.
Biocompatibility: Nitinol muaj biocompatibility zoo heev thiab muaj peev xwm ua tau zoo nrog tib neeg cov ntaub so ntswg yam tsis ua rau muaj kev tsis txaus siab lossis kev tsis haum tshuaj. Qhov no ua rau nws muaj kev nyab xeeb rau kev siv hauv kev tsim khoom ntawm ntau hom kev cog thiab kho mob, xws li cog, stents thiab catheters.
Corrosion tsis kam: Nitinol muaj kev tiv thaiv corrosion zoo thiab muaj peev xwm nyob ruaj khov hauv lub cev rau lub sijhawm ntev yam tsis muaj corroded los ntawm lub cev los yog cov ntaub so ntswg. Qhov no tso cai rau nws los siv rau hauv kev tsim cov khoom cog rau lub sijhawm ntev thiab cov khoom siv kho mob xws li cardiac stents, orthopedic implants, thiab lwm yam.
High Strength thiab Lightweight: Nitinol yog ob qho tib si muaj zog thiab lub teeb yuag, muab lub zog txaus thaum khaws cov khoom siv thiab cog cov khoom hnyav. Qhov no ua rau nws muaj txiaj ntsig zoo hauv kev tsim cov khoom siv kho mob thiab cog qoob loo uas yuav tsum tau muaj zog thiab lub teeb yuag.
Cov khoom no ntawm Nitinol ua rau nws siv dav hauv kev kho mob los tsim cov stents, cog, catheters thiab lwm yam khoom siv kho mob. Nws kuj yog siv rau hauv ntau yam kev siv engineering xws li aerospace, tsheb, thiab cov iav tsom iav, nrog rau cov ntawv tshwj xeeb xws li cov tswj kub thiab cov khoom ntse.
Cov hauv qab no yog cov lus piav qhia luv luv ntawm cov khoom siv no hauv kev kho mob
I. Mob plawv
Stents: Cardiac stents yog cov hlau mesh siv los nthuav thiab txhawb cov hlab ntsha. Nitinol alloys, vim lawv cov superelasticity thiab cov duab zoo nco, tso cai rau cov stent yuav tsum tau compressed mus rau ib tug me me txoj kab uas hla thaum muab tso rau thiab ces rov qab mus rau nws cov qub duab thaum tso tawm, yog li xyuas kom meej tias lub nkoj txhawb nqa qhib.

o Catheters thiab guidewires: Hauv cov txheej txheem mob plawv, catheters thiab guidewires yog siv los coj thiab tso lwm yam khoom siv xws li stents thiab balloons. Lub superelasticity thiab lub cim xeeb ntawm Nitinol alloys tso cai rau catheters thiab guidewires mus rau hauv cov hlab ntsha thiab rov qab mus rau lawv cov qauv tsim ua ntej thaum xav tau.
o Thrombus extractors: Cov khoom siv no yog siv los tshem cov ntshav txhaws los ntawm cov hlab ntsha. Lub superelasticity thiab zoo lub cim xeeb ntawm Nitinol alloy tso cai rau Thrombectomy Devices taug kev los ntawm cov hlab ntsha thiab hloov mus rau cov hlab ntsha sib txawv, yog li tshem tawm cov ntshav txhaws ntau dua.
o Lub plawv li qub: Qee lub plawv li qub yog ua los ntawm Nitinol los txhawb thiab txhim kho lub valve. Cov li qub no tuaj yeem cog tau los ntawm cov txheej txheem cuam tshuam los kho cov kab mob plawv.
o Kho Aneurysm: Nitinol kuj muaj cov ntawv thov hauv kev kho cov hlab ntsha (qhov chaw o ntawm phab ntsa hlab ntsha). Stents thiab lwm yam khoom siv cim xeeb tuaj yeem siv los txhawb thiab kho cov hlab ntsha phab ntsa.
II. Peripheral hlab ntsha
o Peripheral vascular stents: Zoo ib yam li cov hlab plawv stents, peripheral vascular stents yog siv los kho cov kab mob peripheral arterial, xws li nqaim lossis occlusion ntawm cov hlab ntsha hauv ob txhais ceg. Lub superelasticity thiab cov duab nco los ntawm Nitinol stents tso cai rau lawv hloov mus rau cov duab ntawm cov hlab ntsha thiab ua kom nws qhib.
o Aneurysm Repair: Kho ntawm peripheral aneurysms, xws li mob plab aortic aneurysms, feem ntau yuav tsum tau siv cov stents lossis lwm yam khoom siv los txhawb thiab kho cov hlab ntsha. Nitinol stents tuaj yeem muab cov kev txhawb nqa uas xav tau thiab pab tiv thaiv kev tawg ntawm cov hlab ntsha.
o Catheters thiab guidewires: Nyob rau hauv peripheral vascular interventions, catheters thiab guidewires yog siv los coj thiab tso lwm yam khoom xws li balloon dilators los yog stents. Lub superelasticity thiab zoo lub cim xeeb los ntawm Nitinol tso cai rau catheters thiab guidewires navigate los ntawm nqaim thiab tortuous hlab ntsha.
o Arterial Occlusion Treatment: Cov khoom siv xws li Nitinol stents thiab balloon dilators feem ntau yog siv los kho cov kab mob peripheral arterial occlusive los pab kho cov ntshav ntws.
o Endarterectomy: Thaum lub sij hawm peripheral vascular endarterectomy cov txheej txheem, lub superelasticity thiab zoo lub cim xeeb los ntawm Nitinol tso cai rau interventionalists kom yooj yim maneuver thiab tso cov cuab yeej kho mob kom tshem tawm cov quav hniav los yog cov ntshav txhaws ntawm cov hlab ntsha.