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Occlusion Technology Accurately Measures Hemoglobin Level

By HospiMedica International staff writers
Posted on 24 Jul 2019
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Image: The NBM-200 ring‐shaped sensor probe (Photo courtesy of OrSense).
Image: The NBM-200 ring‐shaped sensor probe (Photo courtesy of OrSense).
A novel non‐invasive blood analytes monitor measures blood hemoglobin (Hb), oxygen saturation (SpO2) level and pulse rate values.

The OrSense (Petach Tikva; Israel) NBM-200 non-invasive blood analytes monitor is composed of a reusable ring‐shaped sensor probe that fits on a thumb, and a portable desktop monitor that calculates and displays the measurement result on an easy‐to‐read LCD display. The system uses proprietary SpectOLight occlusion spectroscopy technology, which offers a painless alternative to traditional invasive blood testing. The non-invasive test is not only accurate, but also reduces infection risk, since no blood is drawn, and is also environmentally friendly, as no consumables, such as lancets and gloves, are used.

Incorporating the same occlusion technology as the NBM 200, but focusing on hospital applications, the NBM 200MP system permits both spot and continuous patient monitoring with adjustable alarm limits for oximetry and pulse rate, as well providing both visible and audible alarm signals. The NBM 200MP can be optionally operated using a dedicated tablet or SmartPhone via a software app that allows for on-screen or barcode reader assisted data entry, and local and/or remote data gathering and data files transfer to an external control system.

“The finger stick is often mentioned by donors as the most painful part of the blood donation process,” said Yoav Reisman, CEO of OrSense. “The NBM200 hemoglobin measurement is painless and represents a win/win for blood donors and blood bank organizations; it makes the blood donor experience more comfortable and provides for more efficient, lower cost operations for blood collection centers.”

Occlusion spectroscopy works by applying pressure to temporarily occlude blood flow in a finger, thus creating new blood dynamics, which generate a unique, strong optical signal, which is wholly blood specific. Analysis of the signal provides measure hemoglobin, pulse-rate,
oximetry (even under severe low perfusion levels), and other measurements. The transmission signals across the occluded finger overcomes a key technological barrier related to low signal-to-noise ratio, due to poor or compromised peripheral perfusion, interferences from motion induced noise, and other artifacts.

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