Karl Storz-gmbh & Co. Kg

Heinz Stammberger

Martin Blocher

Tobias Unger

Jochen Schmidberger

Hans-Peter Eisele

Paolo Castelnuovo

A medical instrument for dilating osseous structures, with a shaft on whose distal end a tool point is positioned and on whose proximal end a handle is positioned, such that the handle and the tool point are in active connection with one another by means of an actuating element in such a way that by actuating the handle the tool point can spread radially at least partially and where the distal end of the actuating element has a thickened configuration. To provide a dilating instrument that is sufficiently stable and allows for sensitive actuation, it is proposed with the invention that the tool point should consist of several segments that can radiate radially outward and enclose the thickened distal end of the actuating element essentially completely, when the tool point is in the closed position.

Medical instrument for dilating osseous structures

Medical instrument for dilating structures

A medical instrument for dissecting human and/or animal tissue comprises a shaft, a first tool and a second tool at a distal end of the shaft, the first tool and the second tool cooperating in the manner of a punch by means of an axial relative movement with respect to one another, and at least one of the tools comprising a cutting element which is arranged in such a way that it forms, with the other tool, a punch area that defines a plane which, with a longitudinal axis of the shaft, forms an angle in the area of the distal end of the shaft. The distally arranged tool tapers convexly in diameter toward the distal end in the longitudinal direction of the shaft, the external contour lines of the distally arranged tool intersecting, when viewed in a section through a longitudinal central plane, at an angle smaller than 160&#xb0;.

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Graz, Austria

Heinz Stammberger