Key study on Remote Patient Monitoring of COVID-19 patients

A medical team is discussing the remote patient monitoring of Covid-19 patients on their web interface

Empower your medical team and your patients with remote patient monitoring.

Remote Monitoring of vital signs can make
the pandemic outbreak of COVID-19 more manageable

Within the framework of a first-in-class study in Munich, cosinuss° provides the pioneering biosensor technology to monitor patients of COVID-19, who are in home isolation. The clinical study was initiated and led by Prof. Dr. Med. Georg Schmidt, head of the Biosignal Analysis Working Group, Klinikum rechts der Isar, Technical University of Munich.

With the monitoring system, cosinuss° provided a highly cost-effective, easy to handle and fast to configure extended workbench for healthcare centers. It consists of an in-ear wearable sensor (cosinuss° Two) a data-gateway (Virtual Gateway or Gateway) and a server database (cosinuss° Health Platform).

youtube video thumbnail handelsblatt im ohr sensor uniklinik muenchen

University Hospital in Munich is testing cosinuss° in-ear senosrs for fighting Covid-19.

The in-ear sensor collects key physiological vital parameters from the patient in isolation, and transmits the data with the help of the Gateway to the cosinuss° Health platform, where early warning algorithms calculate a composite score in real-time. Health professionals access all the vital patient information via a simple web application. The cosinuss° solution supports health professionals in determining the urgency of the respective health situation and the necessity of hospital admission.

Key physiological parameters that are monitored include:

  • Core Body Temperature
  • Heart Rate
  • Blood Oxygen Saturation
  • Respiration Rate

The Mission – Keep up a functioning healthcare system.

In this ongoing clinical study, the goal is to make the pandemic outbreak more manageable and to keep up a functioning healthcare system by:

  • Relieving hospital overload, increasing efficiency
  • Lowering the risk of infection for health workers and other inpatients
  • Providing timely and effective healthcare intervention for the affected people
  • Continuously telemonitoring people in home isolation
  • Providing accurate data basis for early clinical studies

Remote patient monitoring with in-ear wearables in home isolation.

The wearable device cosinuss° Two can be worn anytime and anywhere.

Remote Patient Monitoring in the Telecovid study – Solution overview

High risk patients are equipped with a wearable in-ear sensor and a Gateway. The wearable sensor is measuring vital signs data from inside the ear canal and is transmitting collected values via Bluetooth 4.0 to the Gateway. The Gateway is a stand-alone device which is capturing and storing the transferred data. From here the patient’s Gateway transmits the collected data in real-time or at a specified time to the cosinuss° Health platform.

On the cosinuss° Health platform, the collected vital data is processed in real-time, through advanced algorithms and analytics, in order to determine the early warning scores. Via the User interface of the cosinuss° Health Platform, health professionals are able to visualize and access the vital information per patient. The researchers can access the anonymised health data on the cosinuss° Health Platform with a standard interface (e.g. REST API).

Illustration of the cosinuss° remote vital signs monitoring system including all hardware and software components and their interfaces.

Visualization of the remote patient monitoring dataflow from the cosinuss° wearable sensor, to the Gateway and to the cosinuss° Health platform.

Components of the Remote Patient Monitoring System in the Telecovid study

Wearable sensor

cosinuss° wearable sensors detect, analyze and transmit information concerning physiological body signals such as vital signs, and ambient data which allow immediate biofeedback to the wearer and/or to remote operators in healthcare.

cosinuss° Two

cosinuss° Two is an in-ear wearable sensor incorporating a red/infrared photoplethysmography (PPG) sensor element, a contact temperature sensor and an accelerometer.

It thus collects the raw data:

  • Optical pulse wave (PPG signal)
  • Core body temperature
  • 3-D acceleration of the head

Based on this accurate raw data, vital signs and additional parameters are calculated:

  • Core Body Temperature
  • Heart Rate
  • Blood Oxygen Saturation
  • Interbeat (R-R) Interval
  • Perfusion Index
  • Signal Quality
  • Movements

The wearable in-ear sensor for monitoring vital signs remotely: cosinuss° Two

Gateway Solutions

There are two different data-gateway solutions: either for closed, stationary settings with a preference for minimum user-device interaction (the Gateway) or for mobile remote settings, with a high user-device interaction (the Virtual Gateway). Additionally our advanced algorithms successfully reduce the workload of network computing.

The Gateway

The Gateway is a device that is collecting and transferring the collected data to the server. It can also act as a control element by waking up the wearable sensor at predefined times, reducing the level of user interaction required. An optional SIM card integration makes it a truly stand-alone gateway solution.

The Gateway guarantees a reliable connection and requires minimum user interaction.

The Virtual Gateway

The Virtual gateway application running on a mobile phone or a tablet. It receives the data from the wearable sensor and transfers it to the cosinuss° Health platform, either in real-time or periodically. User-device interactions and a communication interface can be individually enabled.

The Virtual Gateway turns a smartphone into a mobile remote monitoring gateway.

Cloud Server

The server is an accessible database in the cloud.

The cosinuss° Health Platform

The cosinuss° Health Platform combines a cloud database and a user interface empowering health centers with accurate reliable data and remote patient management capabilities. The additional computing power of the server allows a real-time data analysis. Advanced algorithms calculate additional key physiological parameters, such as:

  • Respiration Rate
  • Heart Rate Variability

The cosinuss° Health platform is available as a ‘Software as a Service’ (SaaS).

Cross-platform and browser based data access using the cosinuss° WebInterface.

Pseudonymized vital signs data received from the patient’s home can be monitored in real-time by healthcare centers using the cosinuss° Health Platform.

Simple Setup of the Remote Patient Monitoring system

The cosinuss° solute for remote monitoring of COVID-19 patients can be set up in a few simple steps:

  1. Healthcare centers receive an URL as well as a username and password. They open the URL and enter username and password to access all monitored vital data and information. In this way, they can see the real-time measurements.
  2. Patients receive a wearable in-ear sensor and the Gateway. The wearable sensor can be easily placed in the ear.
  3. The Gateway needs to be solely plugged into a socket.

Data Privacy

All personal identifying information and medical health data on the cosinuss° Health Platform are pseudonymized. Only authorized persons have access to the data.

The data transfer is encrypted and has repeatedly passed 
ethical approval:

  • EPItect – Universitätsklinikum Bonn,
  • Deutsches Herzzentrum München KRI,
  • Universitätsklinikum Schleswig-Holstein

Clinical Validity

ONGOING STUDY: Cooperation with the Technical University of Munich and the City of Munich – Department of Health and Environment, for remote monitoring of COVID-19 patients. The Rechts der Isar Clinic of the Technical University of Munich (TUM), lead by Prof. Dr. Georg Schmidt, investigates how remote monitoring of vital parameters can reduce the number of COVID-19 severe cases, by enabling timely and effective intervention. This would not only spare the patient enormous physical and psychological stress, but also relieve our health system.

The remote monitoring system (combining cosinuss° Two and the Gateway) was tested and positively evaluated, both for home and clinical use, in a feasibility study with 30 subjects, over 60 years old (INVADE Study, 2020).

The heart rate is validated using gold standard ECG during the EPItect clinical trial, 2019.

The core body temperature is validated during heart surgery at Deutsches Herzzentrum – Klinikum rechts der Isar, 2014.


Prof. Dr. med. Georg Schmidt

Head of Biosignal Analysis Working Group at Klinikum Rechts der Isar, München

Analysis of the signal quality and comparison of two photoplethysmographic sensors: Finger clip and in-ear sensor.

Prof. Dr. med. Rainer Surges

Director of the Department of Epileptology at the Bonn University Hospital.

Clinical trial to detect epileptic seizures using the cosinuss° in-ear sensor and video-EEG-monitoring as a reference.