Various present invention devices enable adherence to requirements for medical items. The insertion tube is held in the receptacle tube with the help of a splint. A1={logI)}t\u2212log {Iref)}tref\u2003\u2003Equation 1. Each contact module has a dielectric body and mating contacts extending from the dielectric body. When the ensemble ends, the user can play again, changing assigned parts. The voltage value across the capacitor is measured and compared to an expected voltage value.