The aim of this study is experimental testing of various kinds of meshes. They are used for correction of abdominal wall defects during operations of hernias (especially by the laparoscopic technique). The following implants were tested: Goretex, Prolen, Mersilen and Vicryl. Each of them represents one group of artificial materials (nonabsorbable, monofilaments multifilament, absorbable) which are usually used. Semiabsorbable materials were not tested because they are not usually used. The objects of testing were firstly constant quality of implants lasting in the time and secondly the reaction of tissues after implantation of those materials.