A seven-dimensional force-sensing
surgical instrument for
robot-assisted
laparoscopic surgery belongs to the field of medical devices. It includes a clamp, a six-dimensional force /
torque sensor, a clamping force detection unit, a
wrist mechanism, an instrument shaft and connecting mechanism, a transmission mechanism, a quick-connect mechanism, and a drive unit. The six-dimensional force /
torque sensor and clamping force detection unit are installed at the rear end of the clamp and the front end of the
wrist mechanism. Accurate sensing of six-dimensional external forces / torques and clamping forces is achieved through decoupling pulleys in the clamping force detection unit and
signal compensation from the host
computer software output. The instrument shaft and connecting mechanism are installed at the rear end of the
wrist mechanism and the front end of the transmission mechanism. The rear end of the transmission mechanism is installed at the front end of the quick-connect mechanism, and the rear end of the quick-connect mechanism is installed at the front end of the drive mechanism. This invention achieves four
degrees of freedom—roll,
pitch,
yaw, and clamp opening / closing—through wire transmission.