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  • The scheme of the external stent technique. Ringed PTFE graft, involving three to five rings, is used. The larger piece stabilizes the cartilage portion using three rows of stitches and a smaller one for the membrane portion (single row). The two graft pieces are overlapped by a few millimeters and not sewn to each other.
    Sakakibara Heart Institute
    The scheme of the external stent technique. Ringed PTFE graft, involving three to five rings, is used. The larger piece stabilizes the cartilage portion using three rows of stitches and a smaller one for the membrane portion (single row). The two graft pieces are overlapped by a few millimeters and not sewn to each other.




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