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Medgadget @ CES 2016: Profusa Unveils Long-Term Implantable Biosensor

January 12th, 2016 Scott Jung Exclusive

ProfusaLast week at CES, South San Francisco based Profusa showed off an upcoming injectable sensor that can be used to continuously monitor oxygen levels in tissue. Measuring only 3-5 millimeters long and a tiny 500 microns in diameter, the biosensor can be injected into tissue with just a hypodermic needle. It consists of a soft hydrogel scaffold that allows it to be biologically compatible with the surrounding tissue without any foreign body response. The sensor also contains a special chemical marker that changes fluorescence depending on the amount of oxygen that reacts with it. An optical reader placed on the skin measures the fluorescence and relays the data to a smartphone. The biosensor can last as long as two years (at which point the chemical marker begins to lose its potency), and because it contains no electronics and is completely biocompatible there’s no need to remove it.

On stage at the CES Digital Health Summit, Profusa CEO Dr. Ben Hwang gave a live demonstration of how the sensor works in action. As two of his colleagues with the sensors implanted and using a blood pressure cuffs performed stretches to simulate changes in blood flow, a graph displayed the live view of the changing tissue oxygen levels at the site of the sensors.

We had the opportunity to talk to Dr. Hwang after his talk, and he shared that the first application of the sensor is the Lumee Oxygen Sensing System, which is designed to monitor oxygen levels during the wound healing process. Sufficient oxygen flow through a wound is vital to the healing process, and Lumee can detect low oxygen levels early in the healing process and even before treatment or surgery begins.

Hwang explained that wound treatment is just the beginning, and that the ability to make a tiny, completely biocompatible sensor could lead to new capabilities in remote patient monitoring, sensors for sports medicine, and solutions for diabetes management.

The Lumee system is expected to be available in Europe within the next few months and in the U.S. later this year.

Take a look at the video below showing some of the potential uses for the Profusa sensor:

More information: Profusa website

Scott Jung

Scott Jung (@scottjung) is a Silicon Valley-based medical and health technology reporter and advocate, with a focus on wearables, telemedicine, and health technology in emerging countries. He has represented Medgadget at CES and Digital Health Summit, TEDMED, Stanford Medicine X, and SXSW. Always on the lookout for innovative medical technology worldwide, Scott has been invited to visit Colombia, Poland, and many other countries around the world to share how medtech is enriching the lives of its people. Scott holds a B.S. degree in Biomedical Engineering from the University of Southern California and an M.S. degree in Medical Product Development Management from San José State University. Scott is always looking for the next big thing in medical technology and digital health. Interested in helping him transform lives? Get in touch with him at http://scottju.ng

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