Continuous Positive Airway Pressure (CPAP) therapy is commonly prescribed for longstanding, acute cases of Obstructive Sleep Apnea (OSA) during which patients must wear a tight-fitting breathing mask overnight for the duration of the treatment. Because this condition frequently leads to the permanent use of CPAP masks, interface selection is a crucial factor influencing the treatment quality and effectiveness. Masks/interface selection is normally performed on a trial an error basis with clinicians informing their selection based on OSA-related factors with basic fitting feedback from patients. However, it is not uncommon for patients to abandon the treatment or request additional consultations due to ill-fitting CPAP mask with the main sources of discomfort being perceived air leakage and mask/strap overtightening leading to skin damage. This work introduces a novel system (Smart-Fit), for CPAP interface selection using advanced digital technologies, such as Reverse Engineering and Computational Modeling (Finite Element Analysis) which are paired to evaluate and determine the best fitting interface for each clinical case. The model simplifies the number of 3D facial landmarks to 12 and established that a 2 mm scan resolution is enough for accurate scans. The Von Mises stress map in ANSYS serves as an indicator of potential high-pressure areas, triggering the need for a chance of mask size. Current results indicate the Smart Fit System can enable a “best fit CPAP interface” to be selected considering individual’s physical characteristics and existing CPAP interface configurations. The development of the Smart Fit System is an evolution compared to traditional CPAP interface selection approach, which optimizes the CPAP interface selection process.

持续气道正压通气 (CPAP) 治疗通常用于治疗长期急性阻塞性睡眠呼吸暂停 (OSA) 病例，在此期间患者必须在治疗期间整夜佩戴紧身呼吸面罩。由于这种情况经常导致持续使用 CPAP 面罩，因此接口选择是影响治疗质量和效果的关键因素。面罩/接口的选择通常是在试错的基础上进行的，临床医生会根据 OSA 相关因素和患者的基本适配反馈来告知他们的选择。然而，由于 CPAP 面罩不合适而导致患者放弃治疗或要求额外咨询的情况并不少见，不适的主要来源是感觉到空气泄漏和面罩/带子过紧导致皮肤损伤。这项工作引入了一种新颖的系统（Smart-Fit），使用先进的数字技术（例如逆向工程和计算建模（有限元分析））来选择 CPAP 接口，这些技术配对以评估和确定每个临床病例的最佳适配接口。该模型将 3D 面部标志的数量简化为 12 个，并确定 2 毫米的扫描分辨率足以进行精确扫描。 ANSYS 中的 Von Mises 应力图可作为潜在高压区域的指示器，从而触发对面罩尺寸的需求。目前的结果表明，Smart Fit 系统可以根据个人的身体特征和现有的 CPAP 接口配置来选择“最适合的 CPAP 接口”。与传统的 CPAP 接口选择方法相比，Smart Fit 系统的开发是一种演变，它优化了 CPAP 接口选择过程。