Surgical instrument

A surgical instrument for the surgical gripping, pinching and/or cutting of tissue within an organic body, the surgical instrument comprising:

• an actuation device comprising two grip parts, wherein at least a first of the two grip parts is movably mounted relative to a second of the two grip parts in a translatory and/or rotatory manner in an opening and closure direction,
• a tool head comprising two tool parts, wherein at least a first of the two tool parts is movably mounted relative to a second of the two tool parts in a translatory and/or rotatory manner in an opening and closure direction,
• a shank which extends along a longitudinal axis between the actuation device and the tool head, wherein a proximal end of the shank is connected or connectable to the actuation device, and wherein a distal end of the shank is connected or connectable to the tool head, wherein the shank comprises a transmission element which is axially movable in an opening and closure direction for transmitting a manual force from the first grip part onto the first tool part, and
• an overload protection device comprising a spring element for limiting the manual force which is transmitted onto the first tool part in the closure direction, wherein the overload protection device comprises a toggle lever mechanism, via which the spring element biases the transmission element in the closure direction.