Embossed Nerve Stimulation Electrode Contacts

The electrode contacts transition from flat two-dimensional surfaces to three-dimensional embossed surfaces with patterns such as domes, pillars, or grooves. This dimensional change increases the effective surface area without significantly increasing the contact footprint, thereby reducing impedance and improving charge delivery capacity while maintaining relatively simple manufacturing processes.

By embossing three-dimensional patterns on the electrode contacts, the effective surface area is increased vertically rather than horizontally. This allows greater charge delivery capacity to be achieved within the constrained two-dimensional footprint of the cuff interior face, resolving the contradiction between contact size and available space.

The embossed patterns are pre-formed on the electrode contacts during the manufacturing process using techniques such as embossing, etching, or deposition. By performing this surface modification as a preliminary step before final assembly, the patent achieves high surface pattern precision while managing manufacturing complexity through process integration rather than adding separate complex steps.

The embossed three-dimensional patterns on the electrode contacts create increased surface area and mechanical interlocking features that enhance bonding strength to the substrate. This prevents delamination and protects against exposure to bodily fluids that would cause galvanic corrosion, while the embossing process itself remains a relatively simple manufacturing step.