Wearable Devices in Health: Are We Ready?

Wearable Devices in Health: Are We Ready? 300 230 Anna Ullastres

Wearable Health Devices (WHDs) were born in the 1990s as an innovative technology to monitor human vital signs, and they are still an emerging technology today. As an IoT technology (Internet of Things), WHD can communicate its data to other devices, users, and websites.

The ubiquitous of smartphones in our society, sensor miniaturization, and its easy integration have increased the number of available products in the market, some of them reaching quality levels suitable for medical use.

WHDs can be used for health purposes during daily life monitor gold activity predicted chronic problems, as well as in clinical environments to detected anomalies gold a diagnosis support.

WHDs can be laptop:

  • Wrist-worn wearable's (ie smart watches)
  • smart glasses
  • Ear wearable's, also known as hearable
  • chest bands
  • e-clothes


  • Google contact lenses
  • Skin-based

or even implantable:

  • Birth control implants
  • capsules

Source: modified from Dias et al 2018

Because most of the current technologies are still not enough to cross the barrier into the health sector, most of these wearable technologies are being used for research only, and are not expected to enter the market for up to 5 years.

Multiple vital signs can be measured using WHDs, a variety of them have special importance in specific medical areas:
- stroke volume
- bread
- level of consciousness
- urine output
- sleep
- sweatshirt.

Considering health-related functions, and according to experts, blood pressure measurement technology is expected to be the biggest refinement in wristband-type devices (Cho et al 2019).

Nano-scale devices prepared to go inside the body are expected to shed light in the use of future medical approaches. One of the most pioneer examples is smart Contact Lens developed by Google to monitor blood glucose levels in diabetics. However, according to experts, further research is needed in order to end up with a technological solution able to sense analytes in biofluids such as tears.


Long-term health monitoring opens up the possibility of application for chronic diseases as well as elderly population (Guk et al 2019).

Currently, technology refinement and scientific studies are shading light on the use of WHDs in healthcare. Specifically, some fields are already starting to benefit from wearable devices for personalized medicine, real-time health monitoring, or preventing.

Source image: BD Hypno Plus.

Neurological diseases can widely vary from Alzheimer's, to multiple sclerosis, to epilepsy. Thus, WHDs can shed light into medical uses from clinical research, to pain relief, to diagnosis.

Recent research reviews in this field explore the use of different WHDs to monitor epilepsy or Dementia (Rugg-Gunn 2019; Godfrey et al 2019), and conclude that more data is needed in order to improve device's algorithm performance. In addition, both research studies claim for a standardization and regulatory efforts to integrate the use of wearable devices in clinical trials.

As an example, researchers are using Apple Watch to track epilepsy symptoms, analyzing big data to increase our understanding of the disease. Also, the system is being used to notify carers of an impending seizure.

Source: Diabetes Association Madrid

Glucose levels management is a constant concern for diabetic patients, a chronic disease that is expected to grow over the coming years. Continuous Glucose Monitoring (CGM) sensors and wearable devices will be replacing finger prick measurements in the next years.

Abbott's new Freestyle libre device is a transcutaneous sensor measuring glucose levels every 15 minutes in interstitial fluid.

Another recent example is the Do it Yourself Pancreas for DM1 patients, a wearable glucose sensor connected to a smart system and to an insulin pump, altogether working as an artificial pancreas able to respond to changes in interstitial glucose.

Medtronic also launched a hybrid closed loop system for type 1 diabetes, MiniMed 670G, an insulin pump that enables automatic delivery of basal insulin to maintain blood glucose levels 24 hours a day.

Apple and Dexcom are also collaborating on the development of a new wearable glucose monitor for smart watches (Aleppo et al 2017). Although most systems might still carry some limitations and caveats, WHDs are clearly optimizing diabetes management (Guk et al 2019).

Source: Alive Cor

This field has also long been using wearable technologies to monitor and register heart rate and rhythm (Pevnick et al 2018). Key opinion leaders point out to the use of WHDs for detecting and monitoring atrial fibrillation as a key market for heart rate monitors.

As an example, Apple is working to improve Apple Watch technology to expand their features, thus being able to measure arrhythmias. Recently, the company Alive Cor has developed KardiaMobile ECG monitor, which is currently being used to early-detect atrial fibrillation and atrial flutter recurrence, thus empowering patients. This is the first medical-grade accessory for the Apple Watch.

Also, Bristol-Myers Squibb-Pfizer Alliance and Fitbit are working together to improve the early detection of atrial fibrillation in individuals at increased risk of stroke despite wearable technology.

Source Image: Loncar-Turukalo et al 2019

United States is leading the number of relevant research papers by country followed by United Kingdom, China and Canada.

Some of the leading institutions in WHDs research are:

Research Institution Research Group Website
Brain and Movement website
Wearable Technologies Lab website
WITH Media Lab website
Neurorehabilitation Research Laboratory website
Sensor Technology Research Center website
Department of Medicine and Critical Care Program website


In Spain, some of the leading research centers in this field are:

Research Institution Research Group Website
Integrated Intelligent Sensors and Health Technologies Research Group (ISSET) website
Smart Health Research Group website
Next Generation Networks and Services Group (GRyS) website
Institute of Microelectronics of Barcelona (IMB-CNM-CSIC) website

Most companies are looking towards the healthcare market as a key opportunity to grow.
Wearable technology market is expected to grow reaching up to more than $ 100 billion revenue in 2023 (IDTechEx 2017-2029).

Healthcare is expected to be the market segment with a higher impact (higher revenue), estimated to be $ 14.6 billion in 2023.

Source: IDTechEx

Large technology companies such as Samsung, Apple, Google, Microsoft or IBM are already entering the market using healthcare applications, and they currently hold most of the patents on wearable health technology.

During the last years, patent publications on WHDs have significantly increased, mostly related to patient monitoring, telemedicine and wristwear devices.

Source: Lens.org (a) and ParolaNEWS (b)

Title applicant Patent ID Priority Date Drawing
Apparatus and method for measuring biological signal Samsung electronics Co. Ltd US20130261405 2012-04-02
Smart wearable device for health watch Sensesemi tech private limited US10194862B2 2015-12-28
Method for addressing medical conditions through a wearable health monitor with the aid of a digital computer Bardy diagnostics Inc. US9788722B2 2015-05-10
Modulation and demodulation techniques for a health monitoring system Apple Inc US10219754B1 2014-09-09
Wearable device Microsoft US20180356890A1 2017-06-09
Systems and methods for distributing continuous glucose data dexcom US2016232318A1 2015-02-10
Wearable monitoring and treatment device Zoll Medical Corp. US2015164427A1 2011-09-01

Despite technological advances, current wearable devices still need to face several barriers to enter the market:


Data currently produced is still limited for clinical use
Current WHDs are already being used for monitoring some patients and even as an aid for remote diagnosis. However, there is still very little clinical value to the data collected by current technologies. Importantly, only 5% of WHDs available in the market have been formally validated. Indeed, technologies developed for research purposes seem to be more credible than commercial devices (see Peake et al 2018).


Transcutaneous sensors are becoming more interesting than smart watches for diagnosis and management of chronic diseases, as those WHDs are potentially capable of sensitive measurement of a broader range of biological molecules.

System interoperability
There is no digital standard for interoperability between WHDs, and it is complex to merge data with existing patient clinical records. Importantly, many devices operate in a private cloud service, therefore, healthcare professionals are very limited to use WHDs data.
Patient data security
According to a European Commission consultation in 2017, data security and privacy are key concerns expressed by 73% and 62% of citizens respectively. Stringent procedures for evaluation of medical devices and conformity should improve patient safety.

Safety and security are technology conditioned and should be ensured by the system design. Currenly, are required to comply with WHDs IEC 62366-1: 2015 standards, and two recent EU Regulations 2017/745 and 2017/746. These regulations are going to have a significant impact on the medical devices sector that incorporates wearable technology.

Importantly, experts claim that data anonymization by distortion or removing features does not provide an adequate security level to prevent identity identity frauds. In addition, cyber-attacks could lead to patient health data being committed, or lost.

High cost a barrier to consumers
According to key opinion leaders, there is a concern that people with disabilities or social determinants of health will be discriminated against because of the high cost of WHDs. Most WHDs are aimed at consumers, and price is a key value driver for them. Unless prices decrease or insurance companies offer WHDs, consumers will not be able to afford these new technologies.
Patient commitment
The success of WHDs does not depend only on the technology features, but also on the design of the used engagement strategies. Only if patients are truly engaged in the correct use of WHDs, they will facilitate its use in health (see Patel et al 2015).

A recent Survey in the US shows that 11% of people would use WHDs to monitor their vital signs, 16% of them would use it only for fitness and lifestyle, and 53% would use both applications. Only 20% of people refuse to wear health statistics tracking technology.

Source: Global Data

If you are interested in technology surveillance in a different research topic, please give us your feedback here

Anna Ullastres

I graduated in Biology and studied a Master in Cell Biology, specializing in cancer and cytogenetics. Until 2017, I worked as a researcher and obtained a PhD in Genetics. After that, I enrolled a university postgrade program on Innovation and Project Management and started working as innovation project manager at the Innovation Unit of the Fundació Parc Taulí. I am currently completing the postgrade program and specializing in IP protection.

All stories by: Anna Ullastres

Leave a Reply

Your email address Will not be published.

Privacy preferences

When you visit our website, your browser may store information about specific services, usually in the form of cookies. Here you can change your privacy preferences. Please note that blocking certain types of cookies may affect your experience on our website and the services we offer.

Enable / disable Google Analytics tracking code
Enable / disable Google Fonts
Turn Google Maps on / off
Enable / disable embedded videos
This website uses cookies, mainly from third party services. You can edit your privacy preferences and / or accept the use of cookies.