SEEG Deep Electrode Coating Technology: Precise Empowerment of Silver, Gold, and Platinum

In the field of precision treatment in neurosurgery, SEEG (Stereoscopic Electroencephalogram) electrode implantation technology achieves the localization of epileptic foci through minimally invasive methods, with the core being the biocompatibility and signal transduction performance of electrode materials.Advanced Institute (Shenzhen) Technology Co., Ltd. (hereinafter referred to as "Advanced Institute Technology")Established in 2016, it is a high-tech enterprise specializing in shielding materials, insulation materials, thermal conductive materials, and precious metal coatings. It has a registered trademark of "Research Platinum" and has production bases in Shenzhen and Dongguan. The company has developed three types of flexible substrate coating solutions, silver plating, gold plating, and platinum plating, with metal coating technology as the core. Through material modification, it breaks through the performance boundaries of traditional electrodes and provides high-precision solutions for the cutting-edge field of neural probes and brain computer interfaces.

Coating structure: precise bonding of metal and polymer substrate

Advanced Institute Technology uses composite processes such as magnetron sputtering and vacuum evaporation to deposit metal coatings on flexible polymer film substrates such as PI (polyimide), PET, FEP, etc. The company has independently built a roll to roll vacuum coating production line, which can continuously deposit metal layers on the surface of flexible polymer films. The process features include uniform coating, strong adhesion, and support for large-scale supply. Suitable substrates include various polymer materials such as FEP, PI, PET, LCP, PPS, PEN, PP, etc., and can be plated with metals including gold, silver, copper, aluminum, tin, nickel, titanium, platinum, etc. The metal coating achieves stress transition from the substrate to the metal layer through gradient coating design, effectively avoiding interface delamination caused by modulus differences. For example, the PI coating series has the characteristics of high temperature resistance, high frequency and low loss, and is suitable for high-end application scenarios such as flexible electronics, aviation wires, and high-frequency circuits.

Process innovation: plasma pretreatment and pulse electroplating technology

In response to the problem of insufficient bonding strength between metal and polymer substrates, Advanced Institute Technology has developed a plasma pretreatment process, which effectively improves the bonding strength between the substrate and the metal layer by bombarding the substrate surface with plasma. In the gold plating process, the company adopts cyanide free gold plating technology, which has significant advantages in reducing environmental pollution and improving operational safety. Simultaneously introducing pulse electroplating technology, by precisely controlling the switching time and frequency of the current, the porosity in the coating is effectively reduced, and the density and uniformity of the coating are improved. In the silver plating process, Advanced Institute Technology uses nano silver wire composite technology to form a three-dimensional conductive network and enhance conductivity. The company has passed the ISO9001 quality management system certification, and its products comply with the relevant military standards of GJB 773A and RoHS environmental requirements.

Performance leap: synergistic optimization of conductivity, biocompatibility, and corrosion resistance

The three types of coated electrodes have their own advantages in key performance indicators. In terms of platinum plated electrodes, the sintering resistivity of the platinum electrode slurry developed by Advanced Institute Technology is as low as1.65μΩ·cmThe resistance is as low as20±5mΩ/□Ensure high sensitivity and fast response of the electrode. The chemical inertness of gold endows gold-plated electrodes with excellent corrosion resistance, making them suitable for long-term implantation scenarios. Silver plated electrodes have both performance and cost advantages. In terms of mechanical properties, flexible substrate coated electrodes can meet the bending and deformation requirements in complex implantation environments due to the inherent flexibility of substrates such as PI and PET. Each of the three types of coating schemes has its own focus——Gold plating ensures stability, platinum plating ensures longevity, and silver plating ensures safety.

Scene adaptation: precise coverage from epilepsy localization to neural regulation

In the field of epilepsy treatment, SEEG technology implants small electrodes into the brain to directly record electrical activity in deep brain regions, thereby identifying the true starting area of epileptic seizures. Platinum plated electrodes, with their low resistivity characteristics, are an ideal choice for high-frequency EEG monitoring and can effectively capture the transient discharge activity of epileptic foci. Gold plated electrodes exhibit excellent performance in long-term implantation scenarios due to the biocompatibility and chemical inertness of gold. Silver plated electrodes have potential advantages in deep brain stimulation (DBS) therapy by expanding their application scenarios through antibacterial properties. In addition, Advanced Institute Technology's silver/gold plated FEP and PI materials can also be applied in the field of medical devices such as cardiovascular catheters, endoscopes, and radiofrequency ablation electrodes.

Green Manufacturing: Cyanide free Process and Environmental Protection System

Advanced Institute Technology actively practices the concept of green manufacturing. The cyanide free gold plating process effectively reduces the threat of cyanide to the environment and the health of operators; Pulse electroplating technology reduces the amount of precious metals and improves material utilization by precisely controlling electroplating parameters. Our company's products comply with the EU RoHS environmental requirements. In terms of quality management, the company has obtained ISO9001 quality management system certification.

Technology anchoring: continuous exploration from material innovation to clinical value

Advanced Institute Technology has been deeply cultivating precious metal coating technology for ten years, tailoring three major solutions for neural probes: gold plating, platinum plating, and silver plating. The company's R&D team has independent research and development capabilities in the fields of flexible substrate coating, electronic paste, electromagnetic shielding materials, etc. From material innovation to medical device application, Advanced Institute Technology is using precious metal coating technology as a pivot to continuously promote the full chain innovation of SEEG electrodes from materials to clinical practice, contributing to the "Chinese solution" for precision treatment in neurosurgery.

Advanced Institute (Shenzhen) Technology Co., Ltd. - Precious Metal Coating, Born for Precision.