Prosthetic strap system for simplified ventral hernia repair. Its results in a porcine experimental model.

Abstract: Introduction Aiming to achieve a simplified ventral hernia repair, a proprietary shaped mesh was experimentally tested in the porcine model. The mesh is structured with a large central body and radiating straps. The friction of the straps passing through the tissues are hypothesized to be adequate to maintain the mesh in place during tissue ingrowth, avoiding classic point fixation while ensuring a wide coverage of the abdomen. Methods The mesh, having 6 radial straps, was placed using a sublay preperitoneal technique in 4 pigs. All straps were passed laterally through the abdominal wall and exteriorized from the skin. The straps were trimmed at the level of the skin, allowing the stumps to recoil into the subcutaneous space. The animal were euthanized at 1 and 4 months to determine the integration of the straps. Results Macroscopically all 24 straps were firmly incorporated within the abdominal wall. The tension free placement of the mesh by using the straps was effective. The friction of the straps passing through the tissues was adequate to keep the mesh well orientated. No dislocation of the implants was observed. The strap system also allowed a broader coverage of the abdominal wall, far beyond the wound opening. Conclusions The described arm system of the described implant seems to be effective in eliminating point fixation of the mesh. The fixation arms seemed to have ensured the mesh stayed orientated in all animals. A very wide lateral mesh placement was accomplished, assuring sufficient defect overlap when shrinkage occurs