Method and apparatus implementing and using techniques for controlling flow in a body lumen, including use of an implantable medical device. Corresponding to rotation of the bending arm, the clamping die is rotated around the bending die in order to bend the workpiece. The sheet material has a plurality of slits enabling the sheet material to be cone shaped. The customized modules are operable to selectively access and process a number of the modules using the API library while the customized modules are processing on the portable electronic device. An antennacircuitry system is located on the upper surface of the substrate and is in contact with the urethane foam, the antennacircuitry system comprising an insulating base layer including upper and lower surfaces and an electro-conductive antenna layer on the upper surface of the base layer and an electro-conductive circuit layer on the lower surface of the base layer. Thus maintaining a minimum distance between the user and the transmitter may have a dramatic practical effect.