Phin Stim: wireless cortical implant

Incheon, South Korea

Gbrain is a trailblazer in Korea's neurotechnology sector, specializing in advanced Brain-Computer Interface (BCI) medical solutions. As Korea s first domestic manufacturer of invasive electrodes, Gbrain develops flexible, non-invasive thin-film electrodes based on its proprietary parylene-C technology . These electrodes are engineered to minimize brain tissue damage while achieving exceptional conformity to the brain s curvature, enabling high-resolution brainwave acquisition. This pioneering manufacturing process was officially certified as a “New Excellent Technology (NET)” by Korea s Ministry of Trade, Industry and Energy (MOTIE) , recognizing Gbrain s innovation in neuroengineering. Gbrain s flagship product, Phin Stim , is a wireless implantable neuromodulation device that provides personalized therapeutic electrical stimulation for Parkinson s disease. Offering DBS-level efficacy without brain tissue damage , Phin Stim represents a major advancement in patient-centered neurotherapy. The device has earned global recognition, receiving the CES Innovation Award for Digital Health in both 2025 and 2026 , underscoring its technological excellence and clinical promise. Its polymer-based flexible thin-film electrode array , built on Parylene-C with 32-channel gold wire imprinting , offers superior flexibility, stability, and signal precision compared to conventional silicone-based electrodes. Through Gbrain s proprietary optimization of polymer composition, gold purity, and etching techniques , this innovation has been successfully scaled from lab development to mass production —a milestone in next-generation neural interface engineering. In addition, Phin Stim s closed-loop, real-time system enables continuous brainwave monitoring and adaptive stimulation via 2.4 GHz Bluetooth LE . Powered by a titanium-encased chipset , the device transmits high-fidelity 16-bit data at a 512 Hz sampling rate and delivers precise current pulses of up to 2 mA . Clinicians can control all functions through an intuitive tablet-based graphical user interface (GUI) , providing seamless, wireless operation for truly personalized neurotherapy.