Abstract: An ultrasonic surgical system is disclosed comprising a surgical instrument and a wrench assembly. The surgical instrument comprises a handle assembly and a body member pivotably coupled to the handle assembly. The handle assembly comprises a first finger grip, an ultrasonic blade, and a waveguide extending proximally from the ultrasonic blade. The body member comprises a second finger grip, a clamp arm movable relative to the ultrasonic blade to capture tissue therebetween, a first body surface defined on a first side of the body member, and a second body surface defined on a second side of the body member. The wrench assembly comprises a wrench and an adapter operably coupled to the wrench. The adapter comprises a first wrench surface configured to engage the first body surface and a second wrench surface configured to engage the second body surface.

Abstract: A transponder of an active digital sonar system identifies a multifrequency underwater activating sonar signal received from a remote sonar transmitter. The transponder includes a transducer that receives acoustic waves, including the activating sonar signal, and generates an analog electrical receipt signal. The analog electrical receipt signal is converted to a digital receipt signal and cross-correlated with a digital transmission signal pattern corresponding to the activating sonar signal. A relative peak in the cross-correlation value is indicative of the activating sonar signal having been received by the transponder. In response to identifying the activating sonar signal, the transponder transmits a responding multifrequency sonar signal.