| 摘要 |
The invention relates to a catheter for sucking, fragmenting and removing material extractable from hollow bodies, in particular thromboses and embolic bodies from human blood vessels. The inventive catheter comprises a working head (11) which is displaceable along a guide wire (6) independently thereof, is disposed on a distal end of the catheter and is provided with at least one lateral opening (14). Said catheter (10) also comprises a flexible feed screw (13) which is rotatable by means of the rotary drive (2) of a drive unit (1) remote from the working head (11), a flexible hose (12) which encompasses the feed screw (13), is connected to the working head (11) and is embodied in such a way that it is possible to remove thromboses and detached embolic fragments and a cutting tool (13), wherein the feed screw (13) is designed in the form of a cutting tool interacting with the opening (14) of the working head (11) for chopping the thromboses and detached embolic bodies between the peripherial edges (13a) of the feed screw (13) and the edges of the opening. |
