PREFORMED CURVED PROSTHESIS THAT IS ADAPTED TO THE EXTERNAL ILIAC VESSELS

摘要

A prosthesis is provided for repairing a defect in a muscle or tissue wall. The prosthesis has a performed shape that conforms to the wall to facilitate placement and minimize shifting of the prosthesis when positioned on the wall. The prosthesis may include a body formed of a sheet of surgical mesh fabric having a flexible body surrounded by a peripheral edge that may be welded or fused so that the body is capable of resuming the preformed shape after being temporarily deformed to allow for implantation. The body is adapted to the inclination of the external iliac vessels. In one embodiment, the body includes a first portion (1) configured with a shape of a cap and a second portion (6) with a substantially spherical shape that is connected to the first portion at a lower edge (2) thereof. The first portion has a first radius of curvature and the second portion has a second radius of curvature that is less than the first radius of curvature. The second portion (6) includes an outer edge (8) that forms an angle with the lower edge (2) of the first portion that is greater than 100 DEG at the apex (4) of the prosthesis.