A wireless, noninvasive hemoglobin (Hb) measurement system uses an optical sensor for anemia monitoring, hemorrhage detection, and predonation screening.

The Glasswing Hb measurement system is based on proprietary SpectOLight technology, which provides a quick, accurate, and painless measurement of the donor’s blood constituents, while greatly improving donors’ comfort, eliminating infection risk, and providing the medical staff with accurate readings and immediate results. The device is designed for use in environments such as perioperative and critical care units, emergency medicine, blood donation facilities, women’s health, primary care physician’s office, and homecare.

The portable, wireless device operates via rechargeable batteries using a ring-shaped sensor fitted on the donor’s finger and applies pressure, temporarily occluding local blood flow. Optical elements in the sensor then perform a sensitive measurement of the light transmitted through the finger. Hb measurements obtained by the system in multiple applications have shown accurate performance, compared with the gold standard invasive reference values. The system also enables on-line storage and download of data, real-time communication with electronic medical records (EMRs) in the hospital or blood donation centers, and communication with other digital data devices and printers. The Glasswing Hb measurement system is a product of OrSense (Nes Ziona, Israel).

“We are proud to introduce Glasswing, our improved revolutionary solution for noninvasive measurements of hemoglobin,” said Lior Ma'ayan, CEO of OrSense. “OrSense's noninvasive solution improves anemia screening and monitoring by eliminating pain, reducing infection risk, and enabling a simple and fast diagnosis. Our noninvasive system was found to be environmentally friendly, safe, fast and easy to use by the operating staff, and is already in use in multiple blood donation centers and blood banks in around the world, improving donor and patient safety and care.”

Hb measurements are usually performed using capillary blood obtained by finger pricking, which is sent to the lab for results.

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