A paper back tape dispenser that includes a cylindrical outer shell with a center cavity designed to receive a standard roll of paper back tape. The vertical interconnect electrically contacts a top surface of a lower conductive structure. embedded in an electronic stethoscope with a digital readout of an estimated heart rate. The following strategy indicates that, when the received best bid is not equal to the prior bid placed by the negotiator agent module, the negotiator agent module places the bid equal to the received best bid. Additionally, the decreased length of the distal tip facilitates positioning within the blood jet and limits deflection of the guide wire out of the jet.