Abstract: A surgical instrument, has an end effector that includes an ultrasonic blade, and a clamp arm that moves relative to the ultrasonic blade from an opened position toward an intermediate position and a closed position. The clamp arm is offset from the ultrasonic blade to define a predetermined gap in the intermediate position between the opened position and the closed position. A clamp arm actuator connects to the clamp arm and moves from an opened configuration to a closed configuration to direct the clamp arm from the opened position toward the intermediate position and the closed position. A spacer connects with the clamp arm to inhibit movement of the clamp arm from the intermediate position toward the closed position for maintaining the predetermined gap between the clamp arm and the ultrasonic blade.

Abstract: Chamfer-cutting tool kits comprise a cutter, a bushing, an upper-edge guide block, and a lower-edge guide block, and are configured to be selectively assembled into an upper-chamfer configuration for cutting an upper chamfer and into a lower-chamfer configuration for cutting a lower chamfer.

Abstract: A catheter control assembly 10 includes a support structure 12. A drive arrangement 14 is supported by the support structure 12. An elongate displacement mechanism 16 is associated with the drive arrangement 14 to be displaced at least axially under the action of the drive arrangement 14. A carrier 20, for mounting at least a part of a catheter handle 22, is mounted on the displacement mechanism 16, the carrier 20 comprising a plurality of independently displaceable receiving formations 102, 104 and 106, each receiving formation 102, 104 and 106, in use, receiving a part of the catheter handle and at least two of the receiving formations 102, 104 and 106 being axially displaceable relative to each other.

Abstract: An electrochemical sensor for sensing a gas dissolved in a liquid. The sensor includes a probe having a cylindrical body and a rounded face. A working electrode, a reference electrode and an auxiliary electrode are buried in the probe body and have distal ends reaching conformingly to the face. A pulsed polarizing voltage is impressed between the auxiliary electrode and the working electrode for polarizing the probe, and a capacitor is provided for storing the charge which flows to the working electrode during periods of polarization. The concentration of the dissolved gas is determined by measuring the voltage across the capacitor.