Trombectomy mekkanika hija metodu effettiv għat-trattament ta 'puplesija iskemika akuta, inkluża aspirazzjoni diretta, Stent Retrieval, jew taħlita tat-tnejn. L-aspirazzjoni diretta tista 'titwettaq bl-użu ta' varjetà ta 'kateters ta' daqsijiet differenti skond id-dijametru tal-bastiment okkluż.
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 pulzier fl-MCA u 0.064 pulzier fl-ICA. Ir-relazzjoni bejn id-daqs tal-kateter u r-rata ta 'suċċess tar-rikanalizzazzjoni tista' tkun minħabba li l-kateter b'dijametru akbar għandu forza ta 'ġbid akbar meta l-kateter ta' aspirazzjoni jaqbad it-trombu, u b'hekk inaqqas il-possibbiltà li t-trombu ma jiġix aspirat u jaħrab.
Peress li d-dijametri tal-vini u l-kateters tad-demm tal-pazjent mhumiex differenti ħafna, dan jista 'jkun diffiċli biex jinkiseb fil-prattika, u huma meħtieġa diversi daqsijiet ta' kateters ta 'aspirazzjoni. Dawn li ġejjin huma għażliet differenti mogħtija minn studjużi. Id-dijametru ottimali tal-kateter tal-aspirazzjoni distali huwa kkalkulat skond il-proporzjon tad-dijametru ta 'ġewwa {{0}}.7–0.8 u d-dijametru ta' barra 0.8–1.0 , u r-riżultati murija huma għal dijametri differenti tal-vini tad-demm.
Fil-qosor, il-proporzjon tad-dijametru ta 'ġewwa tal-kateter ta' l-aspirazzjoni mad-dijametru arterjali mkejjel bl-anġjografija fil-medda ta '0.7-0.8 huwa l-aktar korrelatat ma' rikanalizzazzjoni kompleta. Il-kirurgu jista 'jagħżel kateter ta' aspirazzjoni aktar xieraq taħt gwida biex itejjeb ir-rata ta 'suċċess ta' rikanalizzazzjoni.