A suturable adhesion-preventing membrane has high suture strength, good biocompatibility,
decomposition and absorption in a living body, sufficient adhesion-preventing effect,
and desirable guided tissue regeneration. The membrane is composed of at least
one non-woven fabric layer made of collagen fibers, or a laminated membranous substance
consisting of at least one non-woven fabric layer made of collagen fibers and at
least one sponge layer made of collagen, and a coating layer of gelatin or hyaluronic
acid on the surface or surfaces of the above membrane. Preferably, the membrane
comprises one to six compressed cross-linked collagen non-woven fabric layers wherein
a layer has a fibers having a fiber diameter of 0.05 mm to 1.0 mm, a bulk density
of 5.010-4 to 5 g/cm3 and a thickness of 0.1 mm to
50 mm, and a coating layer containing gelatin or hyaluronic acid and having a thickness
of 0.05 mm to 20 mm, wherein the coating layer covers one or both sides or a part
or whole of the surface of the membrane.
