Catheter for aspirating, fragmenting and removing material can be removed from blood vessels

摘要

Catheter for aspirating, fragmenting and removing material can be removed from hollow bodies, in particular thrombi and emboli from blood vessels, with a working head (1) with an inner diameter of an inner circumferential surface, which is disposed in a distal end of the catheter and which is axially displaceable along a guide wire (4), independently thereof, wherein said working head has a lateral opening (1 a), wherein the catheter has a transport screw ( 3) Flexible with an outer diameter, a distal end (3a) and a proximal end, which can be rotated with a rotational speed by a rotary drive of a drive unit, spaced from the working head (1) and as with a flexible hose (2) connected to the working head (1), which surrounds the screw conveyor (3), to discharge the material and thrombi and emboli fragments despren didos, and a cutting tool where the transport screw (3) is designed as a cutting tool shear interacts with the opening (1a) of the working head (1), to grind between the peripheral edges of transport screws (3) and the edges of the openings (1a) incoming materials or aspirates and / or thrombi and sloughed embolisms, characterized in that between the distal end (3a) of the transport screw and the head work (1) is arranged a thrust bearing (5) is designed as a disc (6) which can be rotated through the screw conveyor (3) during the working cycle.