| abstract |
Provided is a high-density medical fabric that can be suitably used as a graft for a branched stent graft, can accommodate diameter changes, has the burst strength required of a material to be implanted in a body, and has a seamless tubular shape that can narrow in diameter. This high-density medical fabric is characterized by satisfying the conditions (1), (2), (3), and (4). (1) Both warp and weft yarns are synthetic multifilament fibers having a total fiber fineness of 60 dtex or less. (2) The fabric is provided with a large-diameter part, two branch parts having summed diameters smaller than the diameter of the large-diameter part, and a tapered part interposed between the large-diameter part and the two branch parts, the large-diameter part having a 1/1 plain woven structure, the two branch parts having, for example, a 1/2 ribbed woven structure, and the tapered part having a structure in which these woven structures alternate to form a triangle shape. (3) In each of the large-diameter part and the two branch parts, the fabric has a cover factor of 1600 to 2400. (4) In each of the large-diameter part and the two branch parts, the fabric has a thickness of 110 µm or less. |