Torque wrench for connecting a replaceable instrument tip to a hand piece, system comprising a torque wrench and an instrument tip and method for connecting an instrument tip to a hand piece

Torque wrench for connecting a replaceable instrument tip to a hand piece that carries the replaceable instrument tip in operation, comprising

• a base element having a receiving region for placing the instrument tip inside the receiving region at least during connecting the instrument tip to the hand piece,
• a torque wrench mechanism for applying a certain torque when connecting the instrument tip to the hand piece and
• a housing surrounding the instrument tip, when the instrument tip is arranged in the receiving region, wherein the torque wrench has a guiding structure for aligning the instrument tip during inserting the instrument tip into the receiving region, and
• wherein the guiding structure tapers along a direction being parallel to a longitudinal direction of the receiving region, and
• wherein the torque wrench has a reference marking for determining a status of the instrument tip when connected to the receiving region the reference marking is a ring extending concentrically to an inner surface when the ring is placed concentrically onto a first front side of the base element.