| 摘要 |
The invention refers to a device for fixing a tube member (1) in a cavity (2 ) of a patient. The device includes a body (3), which surrounds the tube membe r and has a casing (4) that at least partly forms an inner space (5). The body (3) is expandable by supplying a fluid to the inner space in such a way that the fluid in the inner space has a working pressure. Furthermore, the body ( 3) has, in a non-expanded state, a relatively small outer extent, which permits the introduction into said cavity (2), and in an expanded state, a relativel y large outer extend, which permits fixing in said cavity by abutment with a contact pressure against a tubular wall (7) of the cavity. In order to ensur e a tight abutment against the wall (7) of the cavity, the body (3) has such a geometrical shape that the contact pressure is substantially constant independent of variations of the working pressure within a normal working range. |
