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Title
Vorrichtung fuer Eingriffe in eine roehrenfoermige Koerperhoehle
Date Issued
2000
Author(s)
Moeller, A.
Harnisch, G.
Patent No
1994-4404608
Abstract
The invention relates to a device for interventions in a tube-shaped body cavity, in particular for ureteroendotomy. The device has a guide tube (3) containing an axially movable operating rod (4) at whose proximal end is a knife (1) with a cutting edge (8) and at whose other end an operating end to move the knife (1) in the axial direction from an idle position to an operating position. The main feature of the invention is that a knife guiding part (2) is provided, said part being connected to the guide tube (3) in a locked bearing and which is provided with an axial bore hole to receive and guide a knife holding sleeve (5) bearing the knife (1) and coupled to the operating rod (4) and an axial slot forming two guide jaws (12) for the knife (1), whereby the guiding jaws (12) of the knife guiding parts (2) has a shape largely fitting the shape of the knife (1) such that the cutting edge (8) of the knife (1) is covered completely by the guiding jaws (12) on the side when the cutting edg e (8) of the knife (1) is in its idle position, and that, furthermore, the knife guiding part (2) has a thicker part (14) clamping the body cavity perpendicular to the plane of the cutting edge (8) in the front area already freeing the cutting edge (8) of the knife (1) on its top side on transition to an operating position.
Language
de
Patenprio
DE 1994-4404608 A: 19940214