Patent ID: 7381225

Claim:
In a pre-shaped, self-blocking reinforcement parietal prosthesis ( 1 ) for inguinal hernioplastic operations close to the spermatic cord ( 13 ), said prosthesis ( 1 ) having an elongated form and extending along a longitudinal axis (A 1 ); the improvements of the prosthesis comprising: a first and a second superimposed layer ( 3 , 4 ) of mesh of polypropylene material ( 2 ) respectively provided with a first and a second holes ( 5 , 8 ) defining an aperture for accommodating the spermatic cord ( 13 ), with a first and second outer edges ( 6 , 9 ) and with a first and second slits ( 7 , 10 ) which connect respectively the first and the second holes ( 5 , 8 ) to the first and second outer edges ( 6 , 9 ); wherein the first and second slits ( 7 , 10 ) extend from opposite sides with respect to said longitudinal axis (A 1 ); wherein the first and the second layers ( 3 , 4 ) are of different sizes so as to be partially superimposed; and the first layer ( 3 ) is partially joined to the second layer ( 4 ) together along two rectilinear portions ( 6 c , 9 c ) of the first and second outer edges ( 6 , 9 ) and substantially transversal to said longitudinal axis (A 1 ) and along respective segments ( 11 , 12 ) of the first and second outer edges ( 6 , 9 ) and adjacent to said two rectilinear portions ( 6 c , 9 c ); each of said portions being less than half the length of either of said outer edges ( 6 , 9 ); wherein said prosthesis presents a second axis (A 2 ) transversal to the first longitudinal axis (A 1 ) and passing through said first and second holes ( 5 , 8 ), said first and second layers ( 3 , 4 ) being joined together on a same side with respect to the transversal axis (A 2 ) only.