Patent ID: 11871956
Assignee: KARL STORZ SE & CO. KG
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. A medical instrument for microinvasive applications, the medical instrument comprising:
a shaft with a distal end and with a proximal end connected to or connectable to a handling device; and
medical scissors connected or connectable mechanically to the distal end of the shaft, the medical scissors comprising:
a first scissor blade with a first cutting edge between a first blade flank surface and a first blade beveled surface;
a second scissor blade with a second cutting edge between a second blade flank surface and a second blade beveled surface, the second scissor blade being movable in relation to the first scissor blade;
a guiding device for the mechanical guiding of the second scissor blade in relation to the first scissor blade such that the second cutting edge touches the first cutting edge at any time at a point of intersection, wherein:
the guiding device is rigidly connected to the shaft or is connectable to the shaft;
the first cutting edge is configured based on a first parameter which increases several times and decreases several times along the first cutting edge;
the second cutting edge is configured based on a second parameter which increases several times and decreases several times along the second cutting edge;
the first parameter is a wedge angle between the first blade flank surface and the first blade beveled surface or a first cutting edge cutting angle or a width of the first blade beveled surface;
the second parameter is a wedge angle between the second blade flank surface and the second blade beveled surface or a second cutting edge cutting angle or a width of the second blade beveled surface; and

the guiding device and the first and second cutting edges are configured such that the first and second cutting edges touch each other at any time at only one intersection point.