Brainlab RT/RS Hardware User's Manual page 53

IMMOBILIZATION HARDWARE
How to Adjust the Torque Wrench
Before mounting the Headring to the patient's head, adjust the torque wrench to the maximum
torque applicable to the patient's head by following steps 1 to 4.
Steps
1.
2.
3.
4.
NOTE: If the torque wrench will not be used for an extended period of time, set the adjustment
ring to "0 Ncm." This relaxes the internal spring tension mechanism.
Hardware User Guide Rev. 4.9 RT / RS Stereotactic Hardware
Unlock the torque wrench, turning the black ring ① in the opposite direction to the en-
graved arrow.
Adjustment of the torque wrench: Hold grip g and turn the adjustment ring ②to the value
you want to set. (Main scale value + Adjustment ring scale value = Torque Value) (e.g. 30
Ncm, Fig. B).
Lock the torque wrench by turning the black ring ①in the direction of the arrows until it
engages. Now the torque wrench is properly adjusted. Turning the torque wrench clock-
wise prevents you from applying more than the adjusted torque value to the Fixation Pins.
Finally, mount the bit with insert h which connects your Fixation Pins to the tip of the tor-
que wrench. Be sure to insert the bit securely as far as it goes.
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