Sab nraud ntawm cov koob tshuaj biopsy feem ntau yog qhia los ntawm "G" (Gauge) scale, tus lej rov qab: tus lej me dua, qhov loj dua lub puab tsaig. Xws li los ntawm 14G (thicker) mus rau 18G thiab txawm tias 20G (thinner), kev xaiv ntawm ntau qhov sib txawv sawv cev rau kev lag luam muag muag ntawm kev tau txais cov qauv ntaub so ntswg txaus, zoo thiab txo qis rau kev ua kom zoo nkauj zoo nkauj.

Thicker-gauge koob (piv txwv li, 14G, 16G) feature lub ntsiab kom zoo dua ntawm cov qauv loj dua. Lawv qhov dav lumens tawm los ntau dua thiab cov ntaub so ntswg txaus, uas yog qhov tseem ceeb rau kev kuaj mob pathological. Cov qauv ntim loj muab ob qho txiaj ntsig tseem ceeb:

Higher diagnostic accuracy: Pathologists have more material for paraffin embedding, sectioning and staining, enabling comprehensive observation of tissue architecture and reducing diagnostic uncertainty or false‑negative results caused by insufficient sampling.

Support for downstream analysis: Beyond routine H&E staining, surplus tissue can be used for molecular tests such as immunohistochemistry (IHC) and fluorescence in‑situ hybridization (FISH) to determine breast cancer hormone receptor status (ER/PR) and HER2 status, providing evidence for personalized targeted therapy.However, a larger needle diameter creates a wider puncture tract, which may raise risks of bleeding, postoperative hematoma and greater pain.

Thinner‑gauge needles (e.g., 18G, 20G) embody the trend toward minimally invasive procedures. Their smaller puncture tracts significantly reduce tissue damage, bleeding and pain, accelerating patient recovery and delivering superior cosmetic results. Fine needles offer distinct advantages for ultrasound‑guided aspiration of cystic lesions or sampling of very superficial lesions close to the skin. Nevertheless, they retrieve limited sample material, mostly cytological specimens (Fine‑Needle Aspiration Cytology, FNAC) or tiny tissue fragments, which may be inadequate for assessing tissue structure (e.g., distinguishing in‑situ from invasive carcinoma) or conducting multiple molecular assays.

To resolve this dilemma, manufacturers innovate through optimized needle design. Piv txwv li, cov koob tuab tuab nrog qhov dav dav thiab kev ua kom zoo dua qub yog tsim los kom tau txais cov qauv zoo dua qub nyob rau hauv tib txoj kab uas hla; Tsis tas li ntawd, cov koob zoo nrog cov txheej txheem tshwj xeeb lossis cov duab geometry yog tsim los txo cov ntaub so ntswg thiab txhim kho cov qauv zoo uas tau los ntawm cov khoom siv nyias nyias. Qhov tseem ceeb tshaj, cov chaw tsim khoom txhawb nqa cov kws kho mob kom txiav txim siab tshwj xeeb los ntawm kev muab cov ntaub ntawv loj tag nrho nrog cov ncauj lus qhia ntxaws ntxaws: 16G lossis txawm tias 14G cov koob tuab tuaj yeem nyiam rau qhov xav tias mob qog nqaij hlav uas xav tau kev qhia dav dav ntawm molecular subtyping, thaum 18G yog qhov zoo rau cov koob txhaj tshuaj zoo. cosmetically sensitive areas, or patients with extreme pain sensitivity.

Los ntawm kev npaj zoo matrix ntawm qhov ntev thiab ntsuas qhov tshwj xeeb, lub mis biopsy koob manufacturers txhais cov kev kho mob anatomical thiab pathological uas yuav tsum tau ua kom pom tseeb, ua tiav cov lus qhia xaiv cov khoom. Tsis yog tsuas yog muab ib rab koob xwb, lawv xa cov pov thawj raws li "cov cuab yeej daws teeb meem". Cov kws kho mob tuaj yeem xaiv cov koob tshuaj biopsy uas tsim nyog tshaj plaws, zoo li xaiv qhov zoo tshaj plaws kev phais scalpel, raws li qhov tob tob, qhov loj me, xwm txheej thiab tus neeg mob tus mob. Qhov kev nkag siab tob tob ntawm qhov loj me thiab kev tsim kho kom zoo kom ntseeg tau tias txawm qhov twg lub hom phiaj qhov mob nyob hauv lub mis, thiab tsis hais tus qauv zoo li cas rau kev kuaj mob, cov cuab yeej siv tau zoo yog muaj los ua kom tiav lub luag haujlwm tseem ceeb ntawm kev kuaj mob nrog kev raug mob tsawg. Qhov no qhia txog lub tswv yim tseem ceeb ntawm cov cuab yeej kho mob niaj hnub tsim los ntawm kev tsim qauv mus rau qhov tseeb thiab tus kheej.