Mechanical thrombectomy yog ib txoj hauv kev zoo rau kev kho mob ntawm ischemic stroke, nrog rau kev thov ncaj qha, Stent Retrieval, lossis ob qho tib si ua ke. Kev nqus ncaj qha tuaj yeem ua tau siv ntau hom catheters ntawm ntau qhov sib txawv nyob ntawm txoj kab uas hla ntawm lub nkoj occluded.
Some scholars have divided the angiographic results into three types: "complete recanalization", "partial recanalization" (in the case of thrombus migration downstream of the branch or distal thrombus in the area supplied by the recanalized arterial segment) and "no recanalization". At the same time, the arterial diameter was measured independently before surgery, and the inner diameter of the distal end of the aspiration catheter (DAC) was collected. The inner diameter of the catheter was divided by the arterial diameter (AD) . Through testing and research, it was found that the ratio of the inner diameter of the catheter to the inner diameter of the artery was significantly different between the three recanalization categories, among which the "complete recanalization group" had the highest ratio and the "no recanalization" group had the lowest ratio. Therefore, it was confirmed that the larger diameter of the aspiration catheter relative to the arterial diameter was associated with an increase in the success of recanalization. At the same time, it was reported that larger aspiration catheters had better recanalization effects than smaller catheters, especially catheters with a diameter of >{{0}}.040 ntiv tes hauv MCA thiab 0.064 ntiv tes hauv ICA. Kev sib raug zoo ntawm catheter loj thiab recanalization zoo npaum li cas tej zaum yuav yog vim lub loj txoj kab uas hla catheter muaj ib tug ntau dua suction quab yuam thaum lub aspiration catheter captures lub thrombus, li no yuav txo tau lub thrombus tsis tau aspirated thiab khiav.
Txij li cov diameters ntawm tus neeg mob cov hlab ntsha thiab catheters tsis sib txawv heev, qhov no tej zaum yuav nyuaj rau kev ua tiav, thiab ntau qhov ntau thiab tsawg ntawm aspiration catheters yuav tsum tau. Cov hauv qab no yog cov kev xaiv sib txawv uas muab los ntawm cov kws tshawb fawb. Qhov zoo tshaj txoj kab uas hla ntawm lub distal aspiration catheter yog xam raws li qhov sib piv ntawm lub puab txoj kab uas hla {{0}}.7–0.8 thiab sab nraud txoj kab uas hla 0.8–1.0 , thiab cov txiaj ntsig tau pom yog rau cov hlab ntsha sib txawv.
Hauv cov ntsiab lus, qhov sib piv ntawm lub puab kab uas hla ntawm lub aspiration catheter rau cov hlab ntsha txoj kab uas hla ntsuas los ntawm angiography nyob rau hauv ntau ntawm 0.7-0.8 yog feem ntau correlated nrog tag recanalization. Tus kws phais neeg tuaj yeem xaiv lub catheter uas tsim nyog dua nyob rau hauv kev taw qhia txhawm rau txhim kho qhov ua tau zoo ntawm kev rov ua dua tshiab.