目的观察一种新型股动脉穿刺点封堵装置的体外栓塞效果。
Objective To assess the blocking effects of a new-type closure device for the puncture point of femoral artery in vitro.
该装置的全称叫做“便置式拱形折流坝”。它与前两种装置采用相同材料制作，可以围住一个被暂时封堵住的堤坝裂口，使之与河水隔开。
The Rapidly Emplaced Hydraulic Arch Barrier, made of the same material as the other two devices, can be put in place around a plugged breach to keep it sealed and dry once the plug has been removed.
为封堵地层或保护某些层段在井内套管外面所用的装置。
A device used on the outside of the casing of a well to seal off formations or to protect certain zones.
为封堵地层或保护某些层段在井内套管外面所用的装置。
A device used on the outside of the casing of a well to seal off formations or to protect certain zones.
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