An improved composite
prosthesis for laparoscopic repair of inguinal or femoral hernias, and also for the laparoscopic repair of large incisional ventral hernias incorporates two different
layers, namely an upper layer made of
polypropylene mesh to promote
tissue ingrowth, and a lower layer formed with an
adhesion barrier material to prevent adhesions to the intestines. Both
layers are secured together with a highly visible dark seam at the perimeter of the
prosthesis to assist the surgeon in visualizing the
peripheral edge. The lower layer is slightly larger than the
polypropylene mesh so there is an
adhesion barrier edge around the
prosthesis to conceal the edges of the
polypropylene mesh. The upper layer includes a guiding cone to facilitate placement of the prosthesis at the exact center of the hernial defect. The base of this cone is attached to the central part of the prosthesis, and the apex of the cone will be attached later to a guiding thread that is inserted to from the outside of the
abdomen using a long straight needle through the
skin and hernial sac. Furthermore the laparoscopic
hernia prosthesis lower layer is provided with a bounding rim to guide the tip of the spiral tacker to the very edges of the prosthesis in order to stretch the prosthesis in place, and also to conceal the staples or tacks.