Tube device and method for selectively stiffening a tube device
AssigneeSoftRail Medical AG
InventorsAlexander VON WEYMARN, Thomas GERIG
Life of this patent
Estimating the term…
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.
Claims25
A tubing apparatus comprising a stiffening section comprising an inner tube, a stiffening layer and an outer tube, the stiffening layer being arranged concentrically outside the inner tube and the outer tube being arranged concentrically outside the stiffening layer the inner tube and the outer tube being radially rigid and the stiffening layer being radially movable, wherein a pressure can be built up between the inner tube and the stiffening layer in such a way that the stiffening layer can be pressed from the inside against the outer tube and thus stiffens the stiffening section under pressure.
A soft dilator comprising two lumens, a first lumen for a guide wire and a second lumen for a shaped wire, wherein the second lumen for the shaped wire is closed in the tip of the dilator and the first lumen for the guide wire is open.
Dependencies are inferred from the claim text.