A spring-loaded electrical contact includes a conductive terminal disposed movably in a receiving space that is confined by a U-shaped base part of a conductive mounting seat. The cutting tool includes a holder equipped with at least one insert pocket including a base surface, at least one circular shim including opposite first and second surfaces, and at least one cutting insert, which includes a circular cutting edge formed at a transition between an upper side and an edge surface of the cutting insert. A plurality of analysis points are set in each extracted coronary artery region.