Shape Memory Alloy Nail Correction for Painless At-Home Use

The patent replaces traditional mechanical correction devices with a shape memory alloy-based system that uses thermal energy to generate corrective force. The shape memory alloy wire (SMAW) is heated to transform from austenite to martensite phase, producing mechanical force to push the ingrown nail outward, thereby substituting mechanical insertion methods with a thermally-actuated mechanical system that reduces pain and professional intervention requirements

The patent utilizes phase transition temperature as a critical parameter to control the corrective action. The shape memory alloy is designed to undergo phase transformation at a specific temperature (e.g., 40-50°C), which can be achieved through external heating or body heat accumulation. By changing the temperature parameter, the alloy transforms from a soft martensite state (easy to insert) to a rigid austenite state (exerts corrective force), enabling painless and effective correction

The patent enables patients to self-administer the treatment by designing a system that can be activated at home. The shape memory alloy wire is inserted into the nail groove and can be heated using simple external heat sources (e.g., hot water, heating pad) to trigger the phase transformation and corrective force generation, eliminating the need for continuous professional intervention and empowering patients to manage their condition independently

The shape memory alloy wire acts as an intermediary between the patient and the correction function. Instead of requiring direct manual manipulation or complex mechanical devices, the alloy wire translates thermal energy into mechanical corrective force, serving as a simple yet effective mediator that bridges the gap between easy-to-apply thermal input and the desired nail correction outcome