Is modh éifeachtach é thrombectomy meicniúil chun stróc géarmhíochaine ischemic a chóireáil, lena n-áirítear asú díreach, Stent Retrieval, nó meascán den dá cheann. Is féidir asú díreach a dhéanamh trí úsáid a bhaint as cataitéir de mhéideanna éagsúla ag brath ar thrastomhas an tsoithigh 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 orlach san MCA agus 0.064 orlach san ICA. D’fhéadfadh go mbeadh an gaol idir méid an chaittéaraigh agus an ráta ratha athchalaithe toisc go bhfuil fórsa súchán níos mó ag an gcaitidéar trastomhais níos mó nuair a ghlacann an catheter asúite an thrombus, rud a laghdóidh an fhéidearthacht nach bhfuil an thrombus á asú agus ag éalú.
Ós rud é nach bhfuil trastomhais soithigh fola agus cataitéir an othair an-difriúil, d'fhéadfadh sé seo a bheith deacair a bhaint amach go praiticiúil, agus tá gá le méideanna éagsúla caititéar séimhithe. Seo a leanas roghanna éagsúla a thugann scoláirí. Ríomhtar trastomhas optamach an chaititéar asúite distal de réir an chóimheas idir an trastomhas istigh {{0}}.7–0.8 agus an trastomhas seachtrach 0.8–1.0 , agus tá na torthaí a thaispeántar le haghaidh trastomhais soithigh fola éagsúla.
Go hachomair, tá an cóimheas idir trastomhas istigh an chaititéar asúite leis an trastomhas artaireach arna thomhas ag angagrafaíocht sa raon 0.7-0.8 comhghaolú is mó le hathchanáil iomlán. Is féidir leis an máinlia catheter asúite níos oiriúnaí a roghnú faoi threoir chun ráta ratha an athchanála a fheabhsú.