The present invention discloses an inflatable contour-balloon useful in minimal invasive and/or open surgery. The inflatable contour-balloon positioned in the contour of a mesh and/or a patch and/or a net. The inflatable contour-balloon is adapted to spread and/or deploy the mesh and/or the patch and/or the net in the abdominal cavity and/or pre-peritoneal and/or space and/or hollow body organs and/or natural and/or artificial orifices and/or spaces and/or post operative spaces. The present invention also discloses an elongate open-bored applicator (EOBP) adapted to spread and/or deploy a mesh and/or a patch and/or a net. The EOBP is useful in minimal invasive surgery. The EOBP has a distal portion that is insertable into the abdominal cavity and/or pre-peritoneal and/or space arid/or hollow body organs and/or natural and/or artificial orifices and/or spaces and/or post operative spaces； and a proximal portion that remains outside the body. The EOBP comprises: (a) at least one inflatable contour-balloon； (b) at least one inflatable dissection balloon. The inflatable contour-balloon and the inflatable dissection balloon are adjustable and located at the distal portion； and, (c) at least one actuating means located at the proximal portion. The actuating means is in communication with the inflatable contour-balloon and the inflatable dissection balloon. The actuating means is adapted to provide the inflatable contour-balloon and the inflatable dissection balloon with independent activation and/or de-activation.
