A system for protecting an integrated circuit from electrostatic discharge events includes a sensing circuit that detects an occurrence of an ESD event on one of a plurality of power supply rails of the IC and, in response, outputs an alert signal identifying the occurrence of the ESD event. The navigation system can route users to preferred locations based on user profile data and past experience with the present driver and other drivers. , a catheter or a surgical probe, is provided. A pin engagement portion, which engages the lock pin to prevent the dropping of the lock pin in a condition before the operating member is mounted, is formed on the operating member.