Two-sides gripping knit

TWO-SIDES GRIPPING KNIT The prosthetic porous knit comprising an arrangement of yams of biocompatible material defining at least two faces for said knit, said knit being provided, on each of its faces, with barbs protruding outwards from said face, said knit being obtained by the following steps: i) providing a warp knitting machine comprising one needle-bed comprising four guide-bars, namely guide-bar B 1, guide-bar B2, guide-bar B3 and guide-bar B4, ii) knitting on said machine yarns of biocompatible material as follows: Guide-bar BI is either unthreaded or threaded with yarns of biocompatible material in which case the knitting pattern followed by guide bar BI involves at least two needles, Guide-bars B2 and B3 are threaded with yarns of biocompatible material, the knitting patterns followed by guide-bars B2 and B3 involving at least two needles and producing said arrangement of yarns defining said two faces of said knit, Guide-bar B4 is threaded with a hot-melt monofilament yarn of biocompatible material, the knitting pattern followed by guide-bar B4 making stitches generating loops protruding outwards from each of the faces of said knit, iii) heat-setting the knit obtained at ii), iv) forming barbs by melting the loops.