The invention relates to a knife comprising a handle of longitudinal axis and a blade rotatably mounted at a first longitudinal end of the handle, between a position deployed outside the handle and in alignment thereof, and a position folded in a space provided in the handle, the knife further comprising a cap lifter, the cap lifter being placed at a second longitudinal end of the handle, the cap lifter comprising a wire structure mounted to freely rotate about an axis orthogonal to the longitudinal axis of the handle, the wire structure defining with the handle a closed contour delimiting a cap lifting aperture intended to receive a capsule, and in that the cap lifter comprises a bearing element allowing the bearing of the cap lifter on an upper part of the capsule, said bearing element being formed by a bearing zone of the handle, and a hooking element allowing the hooking of the cap lifter under the capsule, said hooking element being formed by a rectilinear transverse portion of the wire structure.



FIG. 1