Design and Realization of a Flexible Wearable Non-Invasive Phototherapy Device

Non-invasive phototherapy is a non-invasive, painless, non-toxic, safe and effective photomedicine method that stimulates the organism through light irradiation and produces a series of physiological and biochemical reactions, which plays a role in repairing or regulating the physiological functions of the tissues or the organism so as to achieve the purpose of treating diseases. At present, non-invasive phototherapy has shown great potential in the prevention and treatment of joint degenerative diseases such as Osteoarthritis (OA) and neurodegenerative diseases such as Alzheimer's Disease (AD). However, the existing non-invasive phototherapy instruments are large, expensive, require professional operation and other problems, and patients need to go to the hospital for long-term treatment and other problems, which greatly increase the economic and time costs of patients. Moreover, LED is not flexible and generates high heat, requiring the addition of heat dissipation components, which cannot fit well with the skin. OLED light-emitting devices can be directly prepared into a surface light source on a flexible substrate, which itself is characterized by thinness, high flexibility, precise conformability, low power consumption and low heat generation, which is more suitable for clinical applications. In this paper, a wearable non-invasive phototherapy device based on flexible OLED is designed, which is characterized by flexible and thin, low power consumption and low heat generation. In addition, a driving scheme with precisely adjustable OLED luminous brightness, power is designed to determine the required optical dosimetry for optimal therapeutic effect.