Design optimization of 3D printed digital stethoscope for low-cost telemedicine

Goh, Rou Xuan, Loo, Kai Qian, Tan, Yi Cherng, Wong, Zi Yang, Lim, Junrao, Welch, Lindsay, Heng, Wei Wei, Ling, Ting Yang and Pu, Suan Hui (2023) Design optimization of 3D printed digital stethoscope for low-cost telemedicine. In 2023 IEEE International Conference on Sensors and Nanotechnology (SENNANO). IEEE. pp. 137-140 . (doi:10.1109/SENNANO57767.2023.10352567).

Abstract

Modern day acoustic stethoscope is a necessary equipment to aid clinical practitioners in performing diagnosis on patients. For initial assessments and long-term medical evaluations, it is beneficial for patients to be able to monitor their health status between check-ups and for doctors to be able to diagnose patients remotely. In this work, the viability of MEMS-based digital stethoscope as an alternative solution for a low-cost diagnostic equipment is proposed. The impacts of various design parameters of a 3D-printed stethoscope’s chest-piece on the sound quality has been investigated. Signal-to-noise ratio (SNR) analysis of various designs achieved up to approximately 5.24 dB without any signal processing, indicating clear and audible heart sounds. In addition, the development and implementation of a novel web-based application with digital stethoscope is also proposed in this work for potential real-time remote auscultation.

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Contributors

Author: Lindsay Welch

Author: Suan Hui Pu

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