This study is part of a broader research project focused on integrating haptic feedback in prosthetic devices, achieved through acquiring myoelectric signals and providing sensory feedback. Previous research underscores the critical nature of the adaptation period to a prosthesis, with a significant number of users discontinuing use due to adaptation challenges. The implementation of haptic feedback systems has the potential to alleviate these difficulties and provide additional psychosocial benefits. The primary objectives of this study are to define system requirements, identify user needs, and establish product specifications, leading to the development of a robust system architecture. Exploratory usability tests were conducted to evaluate the feasibility of specific product requirements. The insights gained from these evaluations will inform future research and guide the development of improved prosthetic devices. Furthermore, this study addresses the research question: How does product design contribute to the development of haptic feedback wearable medical devices for upper-limb prostheses?