| 摘要 |
The present invention relates to a device for cutting and aspirating tissue from the human or animal body, in particular for use in vitrectomy, epiretinal membrane peeling, etc., with an outer tube (1), and with an inner tube (2) which is movable to and fro and concentrically in the outer tube (1) with slight play, wherein the outer tube (1) is closed at the free end and has, near the free end, at least one lateral opening (3) with at least one inner cutting edge (5), wherein the inner tube (2) is open at the free end and there has an outer cutting edge (4), and wherein the cutting edges cooperate in a cutting action during the movement of the inner tube (2) relative to the outer tube (1), advantageously characterized by a shaping measure in or on the outer tube (1) and/or in or on the inner tube (2), whereby the inner tube (2), at least in the area of the lateral opening (3), runs in the outer tube (1) with at least slight pretensioning. |
