Design of a finger base-type pulse oximeter

Bor-Shyh Lin, Cheng Yang Huang, Chien Yue Chen, Jiun Hung Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


A pulse oximeter is a common medical instrument used for noninvasively monitoring arterial oxygen saturation (SpO2). Currently, the fingertip-type pulse oximeter is the prevalent type of pulse oximeter used. However, it is inconvenient for long-term monitoring, such as that under motion. In this study, a wearable and wireless finger base-type pulse oximeter was designed and implemented using the tissue optical simulation technique and the Monte Carlo method. The results revealed that a design involving placing the light source at 135°-165° and placing the detector at 75°-90° or 90°-105° yields the optimal conditions for measuring SpO2. Finally, the wearable and wireless finger base-type pulse oximeter was implemented and compared with the commercial fingertip-type pulse oximeter. The experimental results showed that the proposed optimal finger base-type pulse oximeter design can facilitate precise SpO2 measurement.

Original languageEnglish
Article number013108
JournalReview of Scientific Instruments
Issue number1
StatePublished - 1 Jan 2016


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