Abstract: The invention relates to a wetting mechanism 20 for wetting a tube 12 of a catheter 10. The wetting mechanism 20 includes a housing 16 positioned initially at or proximal to the tip end 13 of the catheter tube 12. The housing 16 comprises a wetting chamber 23 into which at least a portion of the catheter tube 12 is able to be introduced and be moved therethrough to wet the catheter tube 12 in use. The wetting mechanism 20 includes a wetting applicator 40 positioned within the wetting chamber 23 configured to hold fluid therein and release said fluid to wet the catheter tube 12 upon movement of the tube 12 through the wetting chamber 23.

Abstract: A surgical instrument includes an end effector, a shaft assembly, and a torque wrench integrally connected with the shaft assembly. The shaft assembly has an acoustic waveguide extending therethrough and the end effector projects distally from the shaft assembly. The acoustic waveguide has a proximal end portion configured to rotatably couple with an ultrasonic transducer assembly. The torque wrench is configured to transmit torque applied to the acoustic waveguide up to a predetermined torque. A portion of the torque wrench is configured to deflect upon receipt of torque greater than the predetermined torque. Accordingly, the portion of the torque wrench slips relative to the acoustic waveguide for limiting coupling of the acoustic waveguide to the ultrasonic transducer assembly to the predetermined torque.