| dc.description.abstract | Medical wearable devices can retrieve, generate and share the wearer’s physiological data, enabling medical personnel to provide remote diagnosis and treatment to patients through digital connections. The most important part of medical wearable devices is the flexible printed circuit boards, which has the advantages of being lightweight, thin and small. Current mainstream manufacturing technologies are more suitable for mass manufacturing of single specification applications. However, medical wearable devices need to be customized according to the different needs of patients. Using mainstream manufacturing technologies for customized production would significantly increase costs. Additive manufacturing technology, which builds layer by layer, can create complex three-dimensional structures and design internal structures within models. Due to its high degree of design freedom, this technology can meet the customization needs of medical wearable devices.
This research is based on additive manufacturing technology to develop a flexible, skin-friendly and customizable flexible printed circuit boards process, providing a solution for the customized application needs of medical wearable devices. The study utilizes high-resolution photopolymerization technology in additive manufacturing technology to produce flexible substrates and prints the designed circuit patterns onto the substrates. Next, conductive ink is printed using direct ink writing technology, which is then cured to form conductive circuits. A method for mounting electronic components is developed based on surface mount technology. Finally, flexible encapsulation material is printed onto the surface of the product using direct ink writing technology. After the encapsulation material is cured, it forms an encapsulation layer that protects the circuit and electronic components from external environmental influences, thereby extending the product′s lifespan and enhancing its reliability.
After completing the aforementioned process, this research uses the medical wearable device for wound care as an example to design two application modules for wound care: a multispectral phototherapy module that accelerates wound healing and a bioimpedance measurement module that monitors wound healing. The modules are fabricated using the developed process, followed by functional testing under power, mechanical property testing, circuit stability testing under different bending conditions, and surface temperature stability testing during operation to verify the feasibility of the modules. | en_US |