Cov koob txhaj tshuaj pov tseg, tseem hu ua cov koob txhaj tshuaj pov tseg, yog cov khoom siv kho mob. Tsim los ntawm xyoo 1949 thiab 1950, cov koob txhaj tshuaj yas pov tseg tau tsim tawm hauv xyoo 1955. Lawv feem ntau yog ua los ntawm cov ntaub ntawv xws li polypropylene thiab feem ntau muab faib ua ob-daim thiab peb- daim qauv tsim.
Lawv feem ntau yog siv rau kev txhaj tshuaj subcutaneous, intramuscular, lossis txhaj tshuaj. Lawv ib leeg - siv qhov xwm txheej zoo tiv thaiv tus kab mob -. Raws li cov cuab yeej kho mob Class III, lawv cov khoom tsim tawm yuav tsum ua raws li cov qauv hauv tebchaws xws li GB 15810. Weigao thiab Kangdelai yog cov khoom lag luam loj hauv daim teb no. Tom qab siv, lawv yuav tsum tau muab pov tseg kom zoo li cov khib nyiab kho mob.
Cov koob txhaj tshuaj uas tsis muaj menyuam pov tseg tuaj yeem muab faib ua ob pawg raws li lawv cov qauv: ob- thooj thiab peb- thooj. Ib tug ob - daim syringe muaj ib lub thawv sab nrauv thiab lub plunger. Ib qho peb - daim syringe muaj ib lub thawv sab nraud, lub plunger, thiab lub piston.
