so would increase the overall board size, the required power, and, certainly, the overall system cost. The latest introduction makes it possible to do all these measurements, with exception of motion, with just one chip. The chip directly connects to biopotential electrodes to measure cardiac signals. It’s able to measure galvanic skin response for stress or mental state tracking. It has eight inputs to measure photocurrents and eight current sources to drive LEDs. In addition, the chip supports auxiliary inputs to measure capacitance and temperature. With a chip like the ADPD4000, you can build a wearable VSM system that’s very power efficient, small, and cost-effective.
How has this changed the way our health is monitored in the last years?
The medical market used to be doctor-centric, meaning that we used to only visit a doctor when not feeling well or for a more obvious health problem, for example, after having an accident. Technology - and especially the electronic industry - has had a big impact on the overall healthcare market while creating a more patient-centric approach. We, as the consumer (or patient), have more options on how to monitor our health conditions and where to go for our healthcare and medical services. While having access to wearable
devices, we can monitor important vital parameters on a daily basis and are able to detect changes or anomalies at a much earlier stage compared to the past when we only recognised an issue when it impacted our well-being. The advantage of monitoring our parameters and detecting anomalies at an earlier stage is that we can start the treatment of certain diseases before they progress and cause permanent damage to the body. As an example, there are many people suffering from hypertension, which is also known as high blood pressure. In some situations, this is a well-known issue; however, there are also many occasions where hypertension isn’t causing any visible symptoms. Over a longer period, this high blood pressure can result in either stroke, heart failure, arterial fibrillation, or several other risky diseases. Hypertension can be treated very easily by lifestyle changes and medication to reduce the risk of health complications. Wearable devices that are monitoring critical vital parameters can frequently save lives or prevent health events that may lead to permanent damage.
Another good example where wearable devices can improve lives is for those who suffer from diabetes. Depending on the severity, diabetics must monitor their glucose levels a few times per day and rely on taking
insulin to regulate glucose levels. Though most diabetics may become accustomed to this over time, it can be an inconvenient and burdensome disruption to daily life. There is a new trend, now moving from the blood glucose monitoring (BGM) approach toward a continuous glucose monitoring (CGM) system, which is made possible by wearable sensing technology. With this technology, glucose levels can be measured continuously throughout the day, while an insulin pump injects the required insulin in order to stay in range. As this will be a closed-loop approach, the burden is lifted from the consumer (or patient). This will have a big impact on daily life, providing freedom from the disruption that diabetics so often deal with. Technology - and especially wearable devices - is proving to have invaluable benefits, both in terms of preventative measures or for those that are already diagnosed with a well-known disease.
Analog Devices is working on many sensors and sensor solutions for the medical market that will help to improve our quality of life. When you would like to learn more, please have a look at
analog.com/healthcare.
Analog Devices
www.analog.com
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