Kev ua tau zoo sib txawv ntawm lub mis Biopsy koob ua los ntawm cov khoom sib txawv hauv kev rov ua haujlwm

https://www.mayoclinic.org/tests-procedures/breast-biopsy/about/pac-20384812

Cov khoom siv ntawm alub mis biopsy koobTsis tsuas yog txiav txim siab nws cov kav ntev thiab biocompatibility tab sis tseem cuam tshuam rau kev xav, raug, thiab kev nyab xeeb ntawm kev ua haujlwm rov qab. Tam sim no, cov ntaub ntawv tseem ceeb suav nrog stainless hlau, titanium alloys, thiab kho mob polymers. Kab lus no yuav sib piv qhov sib txawv ntawm qhov kev ua tau zoo ntawm peb hom ntawm cov ntaub ntawv hauv kev ua haujlwm rov qab los ntawm qhov kev xav ntawm repositioning kinetics.

Stainless hlau biopsy koob yog hom ntxov tshaj plaws siv dav hauv kev kho mob. Lawv qhov zoo muaj xws li lub zog siab, tsis tshua muaj nqi, zoo corrosion kuj, haum rau siab - kub thiab siab - siab sterilization, thiab nquag siv nyob rau hauv reusable instruments. Txawm li cas los xij, stainless hlau muaj qhov ntom ntom (kwv yees li 7.9 g / cm³), uas ua rau lub koob hnyav hnyav. Thaum lub sij hawm repositioning, koob hnyav dua coj inertia ntau dua, xav kom tus kws kho mob siv zog rub ntau dua los ua kom tiav qhov repositioning, tshwj xeeb tshaj yog thaum rov ua piv txwv, uas tuaj yeem yooj yim ua rau tes qaug zog. Tsis tas li ntawd, stainless hlau muaj cov coefficient ntawm kev sib txhuam, thiab lubrication tsis txaus tuaj yeem ua rau "jamming" phenomenon thaum lub sij hawm repositioning, cuam tshuam qhov smoothness ntawm lub lag luam.

Hauv qhov sib piv, titanium alloy biopsy koob, nrog lawv qhov ntom ntom (kwv yees li 4.5 g / cm³) thiab lub zog tshwj xeeb, tau dhau los ua qhov kev xaiv zoo tshaj plaws rau siab -kawg biopsy instruments. Titanium alloy yog kwv yees li 40% sib zog dua li cov hlau tsis muaj steel, txo qis tes thauj khoom thaum rov ua haujlwm. Cov tswv yim kho mob qhia tau hais tias thaum siv titanium alloy koob rau ntev, ntau-qhov chaw biopsies, cov kws kho mob muaj kev qaug dab teg tsawg dua. Tib lub sijhawm, cov yeeb yaj kiab oxide tuab tuaj yeem tsim rau ntawm qhov chaw ntawm titanium alloy, muab tus kheej zoo heev -lubricating zog thiab cov txheej txheem smoother repositioning. Txawm li cas los xij, titanium alloy yog kim dua thiab nyuaj rau kev tsim khoom, txwv nws txoj kev siv dav hauv cov khoom siv pov tseg.

Kev kho mob polymers (xws li polycarbonate thiab PEEK) feem ntau yog siv rau cov koob tshuaj biopsy pov tseg. Cov ntaub ntawv no yog lub teeb yuag, pob tshab, qis - nqi, thiab tsis tas yuav ua kom tsis muaj menyuam. Nyob rau hauv cov nqe lus ntawm repositioning, cov koob polymer yuav luag tsis muaj lub nra hnyav, ua rau lawv haum rau luv luv - sijhawm, ib zaug - taw tes biopsies. Txawm li cas los xij, vim muaj kev txwv ntawm cov khoom siv zog, lawv cov qauv sab hauv (xws li repositioning springs thiab locking clips) feem ntau yog tsim los kom yooj yim. Qee qhov qis- cov khoom kawg tuaj yeem ntsib cov yas deformation lossis kev xauv lub tshuab tsis ua haujlwm tom qab rov ua haujlwm dua, tiv thaiv kev tawm tsam ntxiv. Tsis tas li ntawd, cov koob tshuaj polymer tsis muaj qhov xav tau ntawm cov xim hlau thiab muab cov lus qhia me ntsis tactile thaum lub sij hawm repositioning, xav kom cov kws kho mob cia siab rau ntau qhov pom kev pom.

Los ntawm qhov kev pom qhov tseeb ntawm qhov tseeb, cov khoom siv hlau, vim lawv cov rigidity siab, pom qhov deformation tsawg heev thaum lub sij hawm repositioning, uas ua rau muaj kev tswj tau zoo heev ntawm rab koob hloov chaw. Polymer koob, txawm li cas los xij, tuaj yeem khoov me ntsis hauv qhov siab, cuam tshuam qhov tseeb ntawm qhov chaw ntawm rab koob tom qab repositioning. Qhov no yog ib qho tseem ceeb heev rau cov txheej txheem nyob ze ntawm lub txiv mis, areola, los yog qhov tob tob.

Hais txog kev tiv thaiv kab mob, stainless hlau thiab titanium alloy koob yuav tsum tau ua kom huv huv thiab ua kom tsis muaj menyuam. Lub tshuab repositioning tuaj yeem cuam tshuam cov ntaub so ntswg yooj yim, muaj peev xwm dhau los ua qhov chaw hla - kab mob yog tias kev ntxuav tsis tiav. Cov koob tshuaj polymer pov tseg zam qhov teeb meem no, tab sis lawv cov kev cuam tshuam ib puag ncig yog nce ntxiv.

Hauv cov ntsiab lus, xaiv cov khoom siv yuav tsum xav txog qhov kev npaj siv: titanium alloy koob yog qhov zoo dua rau kev qhia cov tsev kho mob thiab siab - cov neeg siv ntau zaus los txhim kho cov neeg siv kev paub; stainless hlau koob tuaj yeem txiav txim siab rau thawj lub tsev kho mob kom txo cov nqi; thiab cov koob tshuaj polymer pov tseg yog tsim rau thaum muaj xwm txheej ceev lossis tshuaj ntsuam xyuas kom ua tau zoo. Tsis hais txog ntawm cov khoom siv, kev cob qhia tus txheej txheem repositioning txheej txheem yog qhov yuav tsum tau ua ua ntej kom ntseeg tau qhov zoo ntawm biopsy. Nyob rau hauv lub neej yav tom ntej, nrog rau kev txhim kho cov khoom siv technology, cov ntaub ntawv tshiab xws li carbon fiber reinforced polymers yuav tsum ua kom muaj qhov sib npaug zoo dua ntawm kev txo qhov hnyav thiab lub zog, ntxiv kev ua kom zoo dua qhov kev ua haujlwm ntawm lub mis biopsy koob.