Comparison of Different Contact Material on ECG Signal

Available online Journal of

Journal of Scientific and Engineering Research, 2018, 5(7):193-198

ISSN: 2394-2630

Research Article


Comparison of Different Contact Material on ECG Signal

Nik Tehrani

International Technological University, San Jose, California

Abstract This test is designed to characterize and compare the signal quality of traditional wet (gel) electrode contact material vs. the dry (stainless steel) electrode contact material used in the device after post processing of collected raw data from each electrode type. Two types of contact electrode materials were used: 1) Electrode Pair A- Hydrogel Electrodes: MEDI-TRACE(R) 500 ECG ELECTRODE (K945479), and 2) Electrode Pair B- Stainless Steel Electrodes: 136 SS of final device.After frontend filtering and baseline removal, both pairs (A&B) are qualitatively similar. This is mainly due to the fact that SS tends to have more differential baseline movement caused by higher contact resistance to the skin. Results show that after signal processing (including bandpass filtering and additional baseline removal), two simultaneously captured ECG signals, the first one using HG electrodes, and the second using SS electrodes, are equivalent in terms of SNR and correlation. Although both this device (K172654) and predicate (K150869) use as dry electrodes and are equivalent, this report provides additional comparison of wet (gel) electrode with dry (stainless steel).

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Dr Jenny Jiang

MD, Medical Adviser

Dr Jenny Jiang, MD, Medical Adviser, holds an MBA degree from Stanford University and a medical doctorate degree from Sun Yat-sen University. Before starting Tiger Lifescience, she worked for Johnson & Johnson in US and China. Jenny also has rich experience in academia and successfully commercialized innovative technologies as she worked at the South China University of Technology as a lecturer and as a founder of her first startup over ten years ago. In addition, Jenny has rich entrepreneurial experience as well as multi-national managerial skills. She is very insightful in the biotech industry along with medical devices.