| 摘要 |
Catheter, which according to the invention comprises a flexible double walled tube made of elastic material. The space, enclosed between the two walls is divided in chambers, which are consecutively connected along the length of the catheter. The chambers are connected in separate groups, and the number of the groups is four. Each of the groups is connected to a system, which supplies them with fluid. The fluid is able to move freely between the consecutive chambers, belonging to each of the chamber groups. Each of the chamber groups could be performed in form of a spiral. In the walls of at least two of the chamber groups (for example second and fourth), fibers of non elastic material could be placed, with their axis perpendicular to the chambers' cross sections. The chambers from groups two and four are performed with smaller radial and bigger axial dimensions than the chambers from groups one and three. As a working fluid, a biologically compatible liquid could be used. |
