A thrust assembly for a circular stapling tool, comprising: an integral polymer thrust retainer comprising a base surface of a thrust plate and a shaft of a thrust plate extending from the surface of the base of the thrust plate； and the surface of the formation of the brace seam attached to the surface of the base of the thrust plate. 2. The thrust assembly according to claim 1, wherein the shaft of the thrust plate comprises at least one centering surface. The thrust assembly according to claim 1, wherein the thrust plate comprises an opening passing through the shaft of the thrust plate and the base surface of the thrust plate. The thrust assembly according to claim 3, in which the metal shaft passes through the hole. The thrust assembly according to claim 4, where the first end of the metal shaft protrudes from the hole in the base surface of the thrust plate and abuts against the upper part of the base surface of the thrust plate, and the second end of the metal shaft protrudes from the hole in the shaft of the thrust plate. The thrust assembly according to claim 5, wherein the metal shaft is attached to the integral polymer thrust plate. The thrust assembly according to claim 1, further comprising a split washer attached to the base surface of the thrust plate. The thrust unit according to claim 1, where the shaft of the thrust plate contains an opening extending into the shaft of the thrust plate but not passing through the base surface of the thrust plate. The thrust assembly of claim 8, further comprising a metal shaft entering the shaft hole of the thrust plate. The thrust assembly according to claim 9, wherein the metal shaft is attached to the integral polymer thrust plate. A circular stapling tool containing the following components: handle；1. Упорный узел для кругового сшивающего скобами инструмента, содержащий:цельную полимерную упорную пластину, содержащую поверхность основания упорной пластины и вал упорной пластины, выходящий из поверхности основан
