Transmission device for transmitting a force and a torque in a medical instrument

A transmission device for transmitting a force and a torque between a handling device and a tool of a medical instrument, said transmission device comprising:

• transmission members interconnected in a hinged manner, each transmission member having a convex coupling portion, a concave coupling portion, and a sleeve surrounding the concave coupling portion and forming a radially inwardly protruding collar,
• wherein a convex coupling portion of a first transmission member is in each case held interlockingly in a concave coupling portion of an adjacent second transmission member in such a way that a rotation of the first transmission member about its longitudinal axis causes a rotation of the second transmission member about its longitudinal axis,
• wherein a convex coupling portion of a first transmission member is in each case held interlockingly in a concave coupling portion of an adjacent second transmission member in such a way that a tensile force can be transmitted between the first transmission member and the second transmission member.