Reusable Diaper With Feces Sensing Unit

The patent applies the reverse of the disposable principle by creating a reusable diaper system. Instead of using single-use disposable diapers that generate waste, the invention employs a durable reusable diaper with biodegradable absorbent materials. The reusable components (diaper structure, sensors, electronics) can be washed and reused multiple times, while only the absorbent insert needs replacement, significantly reducing environmental waste compared to conventional disposable diapers.

The patent changes the material parameters of the absorbent components by using biodegradable superabsorbent polymers with enhanced absorption capabilities. These materials are specifically selected to have higher absorption rates and greater capacity compared to conventional diaper materials, directly addressing the low absorption rate problem while maintaining the convenience of disposable-style operation through the reusable system.

The patent incorporates feces and urine sensors that provide real-time feedback to caregivers about the diaper's status. This early detection system allows for timely diaper changes, preventing prolonged contact between excretions and the baby's skin, thereby reducing the risk of skin rashes and stains while maintaining the operational simplicity of a diaper system.

The patent replaces complex mechanical sensing systems with simpler chemical or optical sensors that detect feces and urine through color changes or refractive index variations. These sensors utilize natural properties of excretions (such as color, pH, or optical characteristics) rather than requiring complex mechanical or electronic detection mechanisms, thereby achieving high measurement precision with reduced device complexity.