Methods On the standpoint of the peculiar anatomic structure and the pathological changes of complex airway stenosis, we designed the inverted Y-shaped self - expandable metal stent.
方法根据气道复合狭窄的特殊解剖结构与病变特点，设计气道倒y型一体化自膨胀式金属内支架。
Conventional connector for casing string can't meet the demand of seal and connection in solid expandable tubular and presented a new thread structure for an expandable casing connector.
传统的套管接头不能满足连接与密封要求，并设计出了一种新型的膨胀连接螺纹结构。
By testing on different material and slotting structure, according to expandable properties, an appropriate tubular material and slotting structure was optimized.
材料选择和割缝结构优化是可膨胀割缝管的关键技术。
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