Posted in Biomedical Instrumentation and Electrotherapies, Projects (This page is no longer updated. See NEWS page for the latest updates)


Clinical Trials at Memorial Sloan Kettering Cancer Center are ongoing with support from NIH-NCI

Next generation devices under development


Varun Bansal


We developed a working prototype of reflective pulse oximeter that enables surgeons to obtain real time feedback on local tissue oxygen saturation (SpO₂) during operative procedures.

This handheld wireless pulse oximeter is suitable for the intra-operative measurement of tissue SpO₂ during bowel surgery. The device adapts principles and technology developed for non-invasive pulse oximetry, and introduces tissue interface, physician’s tool, and signal processing algorithms for intra-operative applications. The handheld device includes local display of SpO₂  levels (<1s refresh) at the contacted tissue, and signals the operative on degraded signal quality/fault. An onboard microcontroller digitizes and processes signals transduced through a control LED array. Signal processing and display parameters were optimized for operating room conditions. A disposable functionally transparent cover provides both device and tissue protection.  SpO₂ and pulse signals can be processed on a PC or operating room VI. The incorporations of a pressure sensor to increase accuracy and robustness is explored.