The present invention is directed to a proximal catheter assembly configured to facilitate natural or suction-assisted aspiration through a catheter lumen. The accessory device application includes an accessory device stub application and an interface definition. Moreover, appearance frequency of the input tag is counted. Inaccurate mounting of the disk or scale element can cause fluctuations in the period of the code tracks resulting from the rotation of the disk or movement of the scale element. Further, the system and method includes receiving an approval response from the approvers using the email system. A device can be connected to a wireless communications network.