A mobile communication device includes a communication unit for communicating with other communication devices, a processor unit connected to the communication unit, and a sensor unit connected to the processor unit. The device comprises a flexible hollow drive shaft having a distal end insertable into the vessel and an abrasive element located on the drive shaft proximal to the distal end of the drive shaft to abrade a stenotic lesion when the drive shaft rotates. And afterwards, the component holding member is rotated in a specified direction to finally return the component holding member to the reference posture, and then the component is mounted on the object. An IC package having a bottom surface with electrical contacts interfaces with the liquid metal compound in the wells.