缺血组采用颈外动脉逆行置管，暂时夹闭颈总动脉，由导管内注入自体血凝块，建立脑缺血模型。

To set up the cerebral ischemic model, we retrogradely catheterized the external carotid artery, temporarily clipped the common carotid artery, then injected the autocoagnlated clot.

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所述在割管机的工序，先使用驱动机构带动刀片切割管颈，再用火加热被切割处，达到管颈切割的目的。

The working procedure of cutting tube: firstly using driving mechanism to drive cutter blade to cut the neck tube, then using fire to heat the cut position to achieve the purpose of cutting neck tube.

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