TPU-PLA is a composite material system that combines flexibility and comfort with structural shaping. It is suitable for wearable medical devices such as spinal orthotics that require "fitting the human body + stable support". Personalized customization can be achieved through 3D scanning/modeling, allowing the orthosis to maintain support while improving wearing comfort, and supporting rapid iterative optimization (pressure points, edge corners, vent hole arrays, strap positions, etc.) to reduce try-on rework and delivery cycles.