While it is known that North Korean defectors (NKDs) struggle with South Korea's healthcare system, the specific challenges of their patient journey remain underexplored. To investigate this, we conducted interviews with 10 NKDs about an 8-step patient journey and identified the clinical consultation step as a critical barrier for all participants, marked by three key challenges: expressing symptoms, managing social and cultural concerns, and overcoming language differences. In response, we developed Medibridge, a mobile prototype that allows users to rehearse with an AI doctor before a real hospital visit to generate a tangible ``Helper Note'' for their actual consultation. Our evaluation with 15 NKDs showed improvements in perceived communication capability, including greater expression clarity, reduced social and cultural concerns, and enhanced linguistic confidence. Our contributions include an empirical understanding of NKDs' healthcare challenges, a novel AI-powered rehearsal system that prepares users for real-world clinical communication, and design implications for inclusive technologies for displaced populations.

翻译：尽管已知朝鲜脱北者在应对韩国医疗体系时面临困难，但其患者旅程中的具体挑战仍未得到充分探究。为此，我们对10名脱北者进行了访谈，围绕一个包含8个步骤的患者旅程展开研究，并发现临床问诊阶段是所有参与者面临的关键障碍，其突出表现为三大挑战：症状表述、社会与文化顾虑的处理以及语言差异的克服。针对这些问题，我们开发了Medibridge——一款移动端原型系统，允许用户在真实就诊前通过与AI医生进行演练，生成一份可用于实际问诊的实体“辅助笔记”。通过对15名脱北者的评估，我们发现该系统在感知沟通能力方面带来了提升，包括表达清晰度的增强、社会与文化顾虑的减少以及语言信心的提高。本研究的贡献包括：对脱北者医疗健康挑战的实证理解、一套帮助用户为真实临床沟通做准备的新型AI驱动演练系统，以及针对流离失所人群包容性技术的设计启示。