An electronic medical device includes a first portion, with the first portion including a first insertion hole and an external surface. The first insertion hole is to removably receive an elongate element. The external surface of the first portion comprises a first position indicator, which is located to be visibly juxtaposed relative to a first operative element of the elongate element when the elongate element is fully inserted in the first insertion hole. In some instances, the position indicator may serve a dual function as a vent.
