Imec And TNO Launch Comfortable, Disposable Health Patch With Long Battery Life To Measure Vital Signs

This week, at the Consumer Electronics Show (CES 2019), taking place in Las Vegas, imec and TNO are presenting the latest version of their health patch. Developed in the framework of the Holst Centre in Eindhoven, the new health patch offers unprecedented comfort and a long battery life, previously unseen in this type of device. It can also be manufactured at a fraction of the cost of previous generations, making it a user-friendly, disposable solution for ambulant patient monitoring.

“A crucial technology improvement in this new generation health patch is the integration of a wide range of sensing capabilities into imec’s MUSEIC V3 system-on-chip solution. As a result, the device is almost an order of magnitude cheaper, while the high degree of integration makes it much more energy-efficient. The significant cost reduction means that the patch can now be used as a disposable solution, an important benefit for medical treatment,” says Bernard Grundlehner, System Architect – Connected Health Solutions at imec the Netherlands.

The patch uses a mix of skin friendly and biocompatible materials. The base substrate is a very thin, flexible and elastic TPU material. Most of the electronic functionality is realized using printed electronics technologies and integrated dry electrodes provide a stable and high-quality electrical connection to the body. A comfortable silicone adhesive is used to provide long-term adhesion at high comfort.

“Completely watertight, the new health patch is built for maximum user comfort and can be worn for up to seven days before needing to be replaced”, explains Dr. Jeroen van den Brand, Program Director ‘Printed Electronics’, TNO.

To limit the ecological footprint of the single-use patch, imec researchers have collaborated with Maxell Ltd. to develop an environmentally friendly battery which does not contain any toxic substances. Additionally, the MUSEIC V3 also improves the overall energy-efficiency because of its low-power signal acquisition. While competing solutions generally advertise a battery life of 3-4 days, imec’s solution has a battery life of over 7 days, in many cases even longer, depending on the specific configurations

For patients, a single, disposable patch that can be worn for several days is more convenient and can reduce hospital visits as it no longer needs to be returned after use. This is particularly important for chronically ill patients as it provides an affordable, single-use device that can be easily used to monitor their vital signs and physical activity at home. Easy to apply and comfortable to wear for long periods of time, it enables patients to perform their normal daily activities with minimal impact while providing valuable information to optimize their treatment and medication. The single-use concept can also reduce time spent in the hospital as it allows patients to be sent home earlier while still remotely monitoring their vital signs.

Even more versatile than its predecessors, the new patch now also measures blood oxygen saturation (SpO2). This is an important vital sign for assessing a patient’s physical health as low blood oxygen levels can indicate hypoxemia which – if untreated – can compromise organ functions and can even lead to respiratory or cardiac arrest. It also includes an accelerometer for tracking physical activity, an ECG heart activity tracker and bioelectrical impedance monitoring.

“Traditionally, blood oxygen saturation is measured with a separate device attached to the finger. This is not very practical for daily living, so we developed a new technique that performs the measurement with a chest patch, via reflective photoplethysmography. By adding this sensing capability to our wearable solution, we are now able to measure three essential vital signs - heart rate, breathing rate and blood oxygen saturation - with a single unobtrusive and comfortable chest patch,” explains Bernard Grundlehner.

Visit imec at the #42974 imec and TNO/Holst Centre at booth #43164 of CES from January 8-11 in Las Vegas, Nevada, USA.

About imec
Imec is the world-leading research and innovation hub in nanoelectronics and digital technologies. The combination of our widely acclaimed leadership in microchip technology and profound software and ICT expertise is what makes us unique. By leveraging our world-class infrastructure and local and global ecosystem of partners across a multitude of industries, we create groundbreaking innovation in application domains such as healthcare, smart cities and mobility, logistics and manufacturing, energy and education.

As a trusted partner for companies, start-ups and universities we bring together more than 4,000 brilliant minds from over 85 nationalities. Imec is headquartered in Leuven, Belgium and has distributed R&D groups at a number of Flemish universities, in the Netherlands, Taiwan, USA, China, and offices in India and Japan. In 2017, imec's revenue (P&L) totaled 546 million euro. For more information, visit www.imec-int.com.

About TNO
The Netherlands Organization for Applied Scientific Research (TNO) is an independent research organization. We connect people and knowledge to create innovations that boost the sustainable competitive strength of industry and well-being of society. Now and in the future. This is our mission and it is what drives us, the over 3.000 professionals at TNO, in our work every day. We work in collaboration with partners and focus on transitions or changes in nine social themes that we have identified together with our stakeholders.

About Holst Centre
Holst Centre is an independent R&D centre that develops technologies for wireless autonomous sensor technologies and flexible electronics, in an open innovation setting and in dedicated research trajectories. A key feature of Holst Centre is its partnership model with industry and academia based around roadmaps and programs. It is this kind of cross-fertilization that enables Holst Centre to tune its scientific strategy to industrial needs.

Holst Centre's fundamentals are to contribute to answering global societal challenges in healthcare, lifestyle, sustainability and the Internet of Things. This is visible through the motivation of its researchers, its different collaboration models and the choice of its research topics.

Holst Centre was set up in 2005 by imec (Flanders, Belgium) and TNO (The Netherlands) and is supported by local, regional and national governments. Located on High Tech Campus Eindhoven, Holst Centre benefits from, and contributes to, the state-of-the-art on-site facilities. Holst Centre has over 200 employees from some 28 nations and a commitment from more than 50 industrial partners.