Kev kho mob-Qib Stainless Hlau Rau Siab-Zoo RF Puncture Koob

https://pmc.ncbi.nlm.nih.gov/articles/PMC4333976/

Hauv kev ua haujlwm ntawm cov khoom siv hluav taws xob tsawg tsawg, kev ua haujlwm ntawm cov khoom siv ncaj qha txiav txim siab txog kev nyab xeeb ntawm cov khoom, durability, thiab kev kho kom haum xeeb. Tus Cwj PwmRF transseptal puncture koob meej xaiv cov ntaub ntawv ob lub hauv paus- kho mob- qib 304 thiab 305 stainless hlau- thiab ua kom zoo dua lawv cov yam ntxwv los ntawm cov txheej txheem muaj tswv. Zoo kawg nkaus haum rau qhov chaw kho mob complex ntawm transseptal puncture, qhov no yog qhov tseem ceeb kom zoo dua qhov txawv ntawm cov twj paj nruag zoo tib yam.

304 thiab 305 stainless hlau yog thoob ntiaj teb lees paub siab- cov ntaub ntawv kho mob hlau kawg, khav theeb biocompatibility zoo heev, tiv thaiv corrosion, thiab kev ruaj ntseg. Lawv tsis pom muaj qhov hnyav hlau leaching lossis tib neeg kev tsis lees paub. Ntev -lub sij hawm sib cuag nrog cov ntshav thiab cov ntaub so ntswg myocardial yuav tsis ua rau oxidation, xeb, lossis degradation, ua tau raws li cov qauv kev nyab xeeb rau cov khoom siv kho mob plawv. Muab piv rau cov pa roj carbon zoo tib yam lossis cov hlau tsis zoo, cov ntaub ntawv no tuaj yeem tiv taus qhov cuam tshuam ntawm RF lub zog thiab lub cev kua qaub-puag yaig, ua kom lub cev muaj zog thiab ua haujlwm ruaj khov thoob plaws hauv kev phais.

Kev coj cwj pwm hloov cov khoom siv hauv paus los ntawm kev ua haujlwm txias- ua haujlwm, kho cov koob lub cev tawv kom zoo rau qhov kub ntawm HRC 22-25. Tsis txaus hardness ua rau lub cev rab koob uas yooj yim khoov thiab deviates thaum punncturing thickened los yog fibrotic septa, ua rau qhov chaw tsis raug. Conversely, ntau hardness tsub kom brittleness, ua rau cov koob yuav tawg nyob rau hauv kev nyuaj siab, thaum ib tug overly nyuaj ntsis yuav yooj yim ua rau cov ntaub so ntswg laceration. Qhov tseeb hardness piv ntawm HRC 22-25 muab cov puncture koob ob qho tib si rigidity thiab toughness, tso cai rau meej kis ntawm RF zog thiab yoog mus rau ntau yam complex anatomical puncture yuav tsum tau.

Raws li kev txhawb nqa ntawm siab - cov ntaub ntawv zoo, cov khoom ua tiav qhov kev ruaj ntseg zoo heev. Nrog ob txoj kab uas hla ntawm 0.6 hli thiab 0.7 hli, tag nrho cov kam rau ua yog tswj nyob rau hauv ± 0.01 hli. Lub koob lub cev nta cov tuab tuab thiab meej concentricity, kom ntseeg tau tias muaj zog sib npaug thaum sib tsoo yam tsis muaj teeb meem sib txawv. Tib lub sijhawm, cov khoom siv stainless hlau zoo tshaj plaws yog sib xws nrog cov txheej txheem tom qab electropolishing thiab ultrasonic tu, ua tiav daim iav- zoo li du nto, kom tshem tawm cov khoom seem seem thiab tiv thaiv qhov kev pheej hmoo ntawm embolism tshwm sim los ntawm micro- khib nyiab tsim thaum phais.

Nyob rau hauv cov nqe lus ntawm kev kho mob adaptability, 304 thiab 305 stainless hlau cov ntaub ntawv yog sib xws nrog ntau yam RF lub zog tso zis li, muab ruaj khov hluav taws xob conductivity. Qhov no ua kom pom tseeb tso zis thiab tsis muaj kev ua haujlwm ntawm RF pulse zog, tsom rau lub zog taw tes rau qhov tseeb. Kev txhawb zog los ntawm siab - cov ntaub ntawv zoo thiab cov txheej txheem, Tus cwj pwm RF transseptal puncture koob tau dhau los ntawm kev lees paub thoob ntiaj teb kev ua haujlwm zoo dua. Kev nyab xeeb thiab kev ua haujlwm ruaj khov ntawm cov ntaub ntawv tau raug txheeb xyuas hauv kev kho mob, ua rau nws tsim nyog rau cov neeg laus thiab menyuam yaus kev phais mob plawv thoob plaws txhua pawg hnub nyoog.