Research on Design of Elbow Joint Rehabilitation Aids Based on SAPAD-AHP

FAN Yiting; SONG Duanshu; MA Penghao; WANG Yirun; ZHANG Meng; CHANG Xin

doi:10.19554/j.cnki.1001-3563.2026.08.005

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (8) : 49-60. DOI: 10.19554/j.cnki.1001-3563.2026.08.005

Industrial Design

Research on Design of Elbow Joint Rehabilitation Aids Based on SAPAD-AHP

FAN Yiting¹, SONG Duanshu^1,2*, MA Penghao¹, WANG Yirun³, ZHANG Meng¹, CHANG Xin⁴

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Abstract

The rehabilitation needs for limb motor function disorders after stroke are increasingly prominent. However, the current design of elbow joint rehabilitation aids has problems such as insufficient in-depth analysis of user behaviors and unsystematic research methods. The work aims to establish a systematic analysis model based on user behavior processes to accurately identify core user needs and guide the design of solutions to enhance the user experience and therapeutic effect of elbow joint rehabilitation aids. Through non-participatory observation and questionnaire surveys, user rehabilitation behaviors were sorted out. Combined with the SAPAD framework, user behaviors were qualitatively mined and decomposed, and the general meanings behind the behaviors were mapped from four dimensions: semantics, experience, syntax, and pragmatics. The AHP method was used to quantify the weights of needs, and clustering was performed to obtain multi-level core meaning clusters, that is, core needs of users. The SAPAD-AHP model identified "human-machine interaction comfort" as the most core need indicator. The core needs were translated using the product construction based on meaning in the integrated method, and a rehabilitation aid architecture containing three functional modules of training, fixed adjustment, and interactive feedback was constructed. Combined with mobile rehabilitation programs and training games to optimize the user experience, the final solution was verified by Jack simulation and effectively met the core comfort needs of users. By innovatively applying the SAPAD-AHP integrated method model to the design of elbow joint rehabilitation aids, a quantifiable transformation path from behavior analysis to design elements is established, providing a feasible method for user need analysis and design development of medical rehabilitation products, with high practical application value.

Key words

product design / user needs / SAPAD / AHP / elbow joint rehabilitation aids

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FAN Yiting, SONG Duanshu, MA Penghao, WANG Yirun, ZHANG Meng, CHANG Xin. Research on Design of Elbow Joint Rehabilitation Aids Based on SAPAD-AHP[J]. Packaging Engineering. 2026, 47(8): 49-60 https://doi.org/10.19554/j.cnki.1001-3563.2026.08.005

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