Abstract: The invention relates to a wire device (100), in particular a wire device for insertion in a body lumen, comprising a stiffening portion with a pressure tube (2), a stiffening layer (3) and an outer tube (4). The stiffening layer is arranged concentrically about the pressure tube, and the outer tube is arranged concentrically outside of the stiffening layer. The outer tube is radially stiff and the stiffening layer is radially movable. Pressure can be built up inside the pressure tube such that the stiffening layer can be forced against the outer tube from the inside and the stiffening portion can be reversibly stiffened under pressure. The pressure in the pressure tube can in particular be reduced so that the stiffening portion becomes flexible again.

Abstract: The invention relates to a tube device (100), in particular a lock-type device for insertion in a body lumen, that can be reversibly stiffened under the effect of pressure by a concentric arrangement of an inner (1) and outer tube (4), and a stiffening layer (3), the stiffening layer exerting pressure on the outer tube and thus producing high friction.

Abstract: A tube element for a device for introduction into a body passage comprises a first tube element end and a second tube element end, wherein a longitudinal dimension is formed between the first and second tube element end. The tube element has a sheath comprising an outer wall and an inner wall. A cross-sectional element is arranged between the first and second tube element ends. The cross-sectional element contains a plurality of opening arrangements. Each opening arrangement comprises a first opening containing an insert element and a second opening, the internal pressure of which can be changed by a pressure changing means.

Abstract: A tube element for a device for introduction into a body passage comprises a first tube element end and a second tube element end, wherein a longitudinal dimension is formed between the first and second tube element end. The tube element has a sheath comprising an outer wall and an inner wall. A cross-sectional element is arranged between the first and second tube element ends. The cross-sectional element contains a plurality of opening arrangements. Each opening arrangement comprises a first opening containing an insert element and a second opening, the internal pressure of which can be changed by a pressure changing means.