Steering gear for a surgical instrument and surgical instrument equipped therewith

A steering gear for a surgical instrument, the steering gear comprising:

• at least two drives for the spatial alignment of a wobble plate, the wobble plate being rotatively coupled to a main shaft which is rotatable about a main axis and gimbal-mounted about a center located on the main axis;
• and
• at least two linear slides, which are each displaceably arranged along a guide axis parallel to the main axis and connected to the at least two drives, with each linear slide being operatively connected to the wobble plate by way of an engagement element pair having, as engagement elements, an engagement opening and a lever element comprising, at a free end of a rod portion, a head portion for movable accommodation in the engagement opening, with a pivot plane of the wobble plate being defined by the head portions of the lever elements and the center of the wobble plate, and
• with one of the engagement elements of the engagement element pair being present on a circumference of the wobble plate and the other engagement element of the engagement element pair being present on a surface portion of the respective linear slide facing the wobble plate, said surface portion being a surface portion on a longitudinal side of the linear slide parallel to the guide axis.