MEDICAL & EQUIPMENT DEVICES u Analog Devices
In the field of optoelectronics, optical sensor solutions have been developed that can perform photoplethysmography (PPG), which leverage noninvasive optical methods to calculate the
heart rate, respiration rate, and SpO2. Miniature MEMS motion sensors likewise can measure patient activity, such as exercise sessions and sleep quality, to put vital signs in context.
In hospitals, much of the equipment used for monitoring vital signs is bulky and power hungry. By implementing this measurement capability at chip scale, semiconductor manufacturers such as Analog Devices make it possible to create products such as medical patches applied to the skin that can operate on battery power for days or weeks while transmitting measurements wirelessly to a host device such as a smartphone. Via this host, the measurements can be uploaded securely to a cloud diagnostics service that can turn a stream of raw electrical signals into medically actionable data.
TECHNOLOGY EXPERTISE MEETS APPLICATION KNOW-HOW It’s one thing to be able to describe the functional requirements of the semiconductor and computing systems that enable patients to wear a smart watch or a patch for monitoring
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their vital signs. It is quite another to implement solutions using these technologies in an actual product. At Analog Devices, we recognise that our
service to healthcare technology innovators might start with semiconductor technology, but it cannot end there. That’s why we support customers with a combination of technical experts and domain specialists in the medical market.
It is the job of the medical domain experts to understand intimately the application requirements, and key attributes, such as regulation and data privacy, that characterise the market. Customers developing complex medical products can innovate faster, with more freedom and greater confidence of a successful outcome when they are supported by experts who understand not only their technology but also their application.
In the field of vital signs monitoring, this
application expertise is backed by development platforms. The vital signs monitoring (VSM) study watch, for instance, is a multiparameter open development platform. Featuring a suite of sensors in a convenient wearable form factor, it provides a continuous set of vital signs measurements for use in the development of biomedical algorithms.
THE VSM STUDY WATCH DEVELOPMENT PLATFORM CREATED BY ANALOG DEVICES The VSM study watch implements PPG and ECG to measure heart rate and heart rate variability. Its MEMS accelerometer performs step counting and is used to improve and inform algorithms sensitive to motion artifacts. Sensors on the watch measure temperature and impedance, values used in algorithms to monitor stress and body composition. These capabilities support research carried out by medical and academic institutions to evaluate new use cases for remote patient monitoring. The rewards of moving patient monitoring out of the hospital are clear. Drawing on precise, low power, miniature components such as sensors, analog-to-digital converters, and digital signal processors, the robust VSM watch from Analog Devices and other such development platforms lay the groundwork on which innovative medical device manufacturers can build the monitoring devices of tomorrow.
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