Forceps construction, surgical instrument and surgical instrument comprising such forceps construction

A surgical instrument, for example a surgical instrument for minimally invasive surgery, comprising:

• an elongate frame,
• at least one jaw element mounted movably at a distal end of the elongate frame,
• a trigger device to operate the at least one jaw element and arranged at a proximal end of the elongate frame,
• an actuation rod provided between the trigger device and the at least one jaw element,
• a sensor to provide a sensor signal representative for a force exerted on the at least one jaw element, and
• an actuator to exert a feedback force on the trigger device on the basis of the sensor signal,
• wherein the elongate frame comprises a handle part and a shaft, wherein the trigger device and the actuator are mounted on the handle part and the at least one jaw element is mounted on the shaft,
• wherein the trigger device comprises a trigger arranged to be manipulated by a user, wherein the trigger is rotatably mounted on the handle part of the frame,
• wherein the actuator is a linear direct drive motor, for example a linear Lorentz motor, comprising a coil and at least one permanent magnet assembly, and
• wherein the coil is mounted on the trigger, and wherein the at least one permanent magnet assembly is mounted on the handle part.

A surgical instrument, for example a surgical instrument for minimally invasive surgery, comprising:

• an elongate frame,
• at least one jaw element mounted movably at a distal end of the elongate frame,
• a trigger device to operate the at least one jaw element and arranged at a proximal end of the elongate frame,
• an actuation rod provided between the trigger device and the at least one jaw element,
• a sensor to provide a sensor signal representative for a force exerted on the at least one jaw element, and
• an actuator to exert a feedback force on the trigger device on the basis of the sensor signal,
• wherein the elongate frame comprises a handle part and a shaft, wherein the trigger device and the actuator are mounted on the handle part and the at least one jaw element is mounted on the shaft,
• wherein the shaft is a hollow tube,
• wherein the shaft and the actuation rod are, at their proximal ends, releasably mounted on the handle part, and
• wherein the surgical instrument comprises an actuation rod locking mechanism to connect the actuation rod, at its distal end, to an actuation assembly of the at least one jaw element,
• wherein, in the assembled state, the actuation rod extends through the hollow shaft.