Product Description
The Gingival Light Therapy Device is a fully flexible, wearable electronic system designed for oral healthcare. It delivers targeted phototherapy to the gum tissue using a precise arrangement of high-efficiency LEDs, supporting improved gum health, reduced inflammation, and enhanced healing. The device integrates Bluetooth Low Energy (BLE) connectivity for wireless control, wireless charging for convenience, and capacitive touch input for simple operation. Its fully flexible PCB allows it to conform comfortably to the contours of the mouth, ensuring even light distribution and a comfortable fit during treatment sessions.

Technical Description — Fully Flexible PCB Design
The device’s electronics are implemented on a single continuous polyimide-based flexible PCB, eliminating rigid sections for maximum adaptability.

• Core Components: BLE module for wireless control, Qi-compatible wireless charging coil with power management, capacitive touch sensor for user interaction, and multiple LEDs selected for therapeutic wavelengths.
• Layout: All components, from communication to power management and LED arrays, are mounted directly on the flexible substrate. Component placement is optimized to ensure balanced weight, reduced stress on solder joints, and uniform light exposure across the gum line.
• Power: Integrated wireless charging receiver and Li-ion battery management enable safe and fully cordless operation.
• Design Considerations:
  • Copper traces optimized for repeated flexing without fatigue.
  • Controlled impedance routing for stable BLE communication.
  • Thermal balancing to prevent overheating and maintain safe skin-contact temperatures.
• Healthcare Functionality: LEDs emit targeted wavelengths beneficial for oral tissue, helping stimulate circulation, reduce bacterial growth, and support recovery in periodontal treatments.