Abstract:
The invention pertains to an angioplasty catheter for expanding and/or opening up morbidly constricted or obstructed blood vessels, comprising at least one rotor (3) that is rotatively mounted in a cylindrical housing (4) at the distal end of the catheter, is connected to a rotational actuator (2) and is guided in the axial and/or radial direction along a preset path of motion (5), where as a result of the guided motion, the turning rotor (3) mechanically generates endogenous sound waves, especially sound waves in the ultrasound range, and induces a corresponding motion of the housing (4).
Abstract:
The catheter is arranged at the distal end with a suction opening and a dormia basket type extension. The extension is comprised of a highly elastic material, so that high pressure liquid can be injected through very narrow nozzles. The arteries or veins can be subjected to the pressure or a laser can be applied. The nozzle jet is respectively aligned on a funnel suction opening of the catheter. The branches of the dormia basket are assembled together in a ball at the tip so that the vessel wall is not traumatised. A central opening in the ball enables the catheter to be used across a thin guide wire.
Abstract:
The self expanding endoprosthesis consists of a wire mesh made of thin metal threads. It is inserted into a case- or positioning catheter, pushed through the insertion opening in the tissue and expands automatically, operated by a Guentzig balloon, to the required size when the catheter is pulled back. No additional manipulation is necessary.
Abstract:
A novel balloon catheter for dilatation of constricted blood vessels, comprises a plastic balloon which is mounted on the distal end of a two-channel carrier catheter, and is inflatable/deflatable via the catheter outer channel, while the central channel serves for passage of the guide wire.
Abstract:
The blood vessel support comprises a base element made from a spiral shaped tubular lattice. The base element has a series of occasional transverse ties fixed to it at intervals to act as stabilisers. The ties are positioned to ensure maximum longitudinal flexibility is achieved whilst lateral stability is maintained. The structure can also be provided with connections running in the longitudinal direction. The support may be implanted into the vessel in the compressed state and may expand in-situ to its functional diameter. The implant can be covered with a plastic skin and be coated with a medication.