Upstream data handling in a digital Data Over Cable Service Interface Specification passive optical network. Multiple lateral features are formed on a surface of the second electrode, the lateral features including multiple stepped structures. The impact on battery consumption of the communication is also estimated and a key metric is determined based on the type of delivery options that are available. The degradation of the barb will prevent further penetration of the distal end of the filter legs into the vessel wall and avoid any risk of piercing through the vessel wall.