Enhanced electronic nasolacrimal intubation

摘要

An apparatus facilitates location of an electrically conductive probe extending through a body passage, using a tool. The apparatus includes a circuit which is normally open and which includes a signaling mechanism and power source for powering the signaling mechanism to generate a signal that can be perceived by a practitioner when the circuit is closed. Clips or other connectors attach the circuit to conductive portions of the probe and the tool. The circuit is closed when the tool touches the probe to generate the signal and inform the practitioner that the probe end has been found.