Hemostatic Sealant Patch In 4.5 X 9 Cm And 4.5 X 4.5 Cm Layers Made Up Of Collagen Of Bovine Origin With Nhs-Peg Polyethylene Glycol Coating To Be Used In Laparoscopy Through Tocars Or In Open Surgery" For The Uu.Oo. Of The A.O.U.P. Paolo Giaccone Of Palermo