Abstract: A device for non-invasively evaluating or monitoring an intra-abdominal pressure and/or abdominal wall deformations and/or a risk of incisional hernia of a subject at a preventive stage and/or a pre-operative stage and/or a post-operative stage, the device includes an adjustable and flexible frame, the frame comprising a central area, a left lateral area and a right lateral area; a network of main sensors suitable for measuring local deformations and/or local forces on the surface of the abdomen of the subject, the network of main sensors being assembled to the frame, wherein at least one main sensor is located in each area of the frame; connecting means adapted for connecting the network of main sensors to a treatment unit; and possibly positioning means adapted for positioning the device on the abdomen and/or adjustment means adapted for adjusting the device on the abdomen.