**4. Conclusions**

From the case study and verification of its applications, the results in Table 2 indicate the design of a pillbox for patients with chronic diseases, which is part of the aesthetics study of the entire evaluation of items. Not only were some of the designs chosen, but their aesthetics were improved. Finally, some satisfactory designs were determined by the participants. The score of Case 3 after defuzzification is 0.74, which is at the satisfactory level, followed by 0.69 for Case 2, which is at the common level. Therefore, the overall evaluation result is favored by the decision-making group in Item 1. This design scheme not only provides functionality, aesthetics, and economy, but the functions of the pillbox design for patients with chronic diseases show favorable performance. That is to say, the procedure is to determine the optimal design that can be realized. In this study, a new AHP method was proposed, featuring the integration of fuzzy theory and numerical analysis. First, the AHP is used to calculate the weight of factors affecting the importance of performance parameters. The next step is to satisfy various parameters. The defuzzification procedure is implemented to obtain the results of fuzzy weights, which indicated good consistency of the numerical results. The fuzzy decision-making method can realize any engineering evaluation that is required for the overall product design of a pillbox for patients with chronic diseases. The emphasis of this method is on the overall evaluation of the design and the new performance evaluation. In other words, not only the design of the product set of chronic medicine, but also the entire evaluation method is improved. The results can serve as a basis for an overall evaluation model of the product set for chronic medicines based on the new aesthetic design.

**Funding:** This work was supported by the Ministry of Science and Technology of the Republic of China under gran<sup>t</sup> MOST-108-2221-E-468-003.

**Conflicts of Interest:** The authors declare no conflict of interest.
