Abstract: The tubular organ prosthesis (1) of the invention is prepared from a prosthesis of a vessel (2) which is made up of an outer surface (3) facing tissues and an inner surface covered with an epithelium surface (4) of a wall (5) of the tubular organ. The wall (5) is isolated from the surrounding medium.

Abstract: A material for connecting members for soft tissues and inner organs which consists of a copolymer of N-vinylpyrrolidone and alkyl esters of acrylic and/or methacrylic acid containing in the alkyl group 2 to 8 carbon atoms at the following proportions of the components, molar percent:______________________________________ N-vinylpyrrolidone 40-90 alkyl esters of acrylic and/or methacrylic acid 10-60.

Abstract: A composition for sealing wound surfaces comprises .alpha.-cyanacrylic acid ester or a mixture of esters, monoalkyl esters of polyethylene glycol based on primary aliphatic alcohols of the formula; C.sub.n H.sub.2n+1 O(C.sub.2 H.sub.4 O).sub.m H, wherein n=10 to 18, m=7-10, and a water-soluble ketone, the components being present in the following proportions, in percent by weight:______________________________________ .alpha.-cyanacrylic acid ester or a mixture of 95-75 esters monoalkyl esters of polyethylene glycol 0.01-0.5 based on primary aliphatic alcohols of the formula: C.sub.n H.sub.2n+1 O(C.sub.2 H.sub.4 O).sub.m H, wherein n = 10-18, m = 7-10 water soluble ketone 4.5-24.99. ______________________________________The composition of the present invention is useful in medical practice for sealing the line of anastomosis sutures, hermetization of wound surfaces of internal organs, for stopping diffuse hemorrage in operations, for endoscopic applications in chronic ulcera, and the like.