It is in regard to the medical technical instrument tool in order to insert into the human body pipe at least partly, the internal body of the variability which does the tube of depth (2) and, the husk body outside the depth which surrounds this at least fragmentarily on circumferential side (3) and this instrument (1) stiffness state, and its opposite, the device in order to move (4) it possesses this invention from variable state. According to this invention, the internal body (2), the internal body (2) the inner wall (8) the internal pipe which is formed (6) and the internal body (2) the external wall (9) constituting and the outer tube which on circumferential side has been surrounded in concentric circular condition (7) with the double tube which it possesses (5) to be formed the internal pipe (6) by form, with this instrument (1) stiffness state, and its opposite, the device in order to move (4) to expand to emission direction from variable state the outer tube (7) the annular space (10) by raising the pressure inside, with that the husk body in (3)In order for pressure to join, it is formed.< Selective figure > Figure 1本発明は人体導管内に少なくとも部分的に挿入する為の医療技術用器具に関しており、縦長の管状をした可変性の内部体(2)と、これを少なくとも断片的に円周側で取り巻く縦長の外側の包被体(3)と、本器具(1)を可変状態から硬直状態、及びその逆、に移行する為の装置(4)とを有する。本発明によれば、内部体(2)は、内部体(2)の内壁(8)を構成する内管(6)と内部体(2)の外壁(9)を構成して内管(6)を円周側で同心円状に取り囲んでいる外管(7)とを有する二重管(5)の形態に形成されており、これによって本器具(1)を可変状態から硬直状態、及びその逆、に移行する為の装置(4)は、外管(7)が環状間隙(10)内の圧力を高めることによって放射方向に膨張しそれによって包被体(3)に圧力が加わるように形成されている。【選択図】 図1
