Cablefree Lightweight Easy

Undiagnosed atrial fibrillation (AF) increases the risk of stroke five-fold. AF related strokes can be prevented through earlier detection and timely treatment. ¹

Better and faster methods of detecting AF are needed.

The C3⁺ offers a faster and easier way of screening your patients for arrhythmia. The C3⁺ records high quality 3 channel ECG, is lightweight, reusable and has 7 days of battery life. Cable-free and attached to the patient using standard electrodes, the C3⁺ offers a truly frictionless Holter Monitoring experience. Additionally, the C3⁺ integrates with multiple third-party analysis software solutions, both stand alone and cloud based.


Using cloud-based solutions, we offer automated, AI based reporting to support the diagnosis. The C3⁺ is compatible with a variety of local healthcare applications.


Cortrium collaborates with Cardiomatics to offer automated, AI-based reports. The algorithms are certified according to EN 60601-2-47 and ensure a sensitivity of 99.97% of detecting ventricular beats and 93.00% of detecting episodes of atrial fibrillation (based on MIT-BH database). ²

Sample ReportCardiomatics OnePager

Local Analysis

If you prefer to analyze the results locally, we fully support the integration with the Holter analysis software Cubeholter by Cardioline. Cardioline is a local healthcare system that can be purchased together with the C3⁺ device.

Cardioline Onepager

Third-Party Integration

The C3⁺ recordings can be converted to the European Data Format (EDF+). The .edf format has gained a lot of interest in the past decades and can be considered a standardized data-format for ECG recordings that is supported by a variety of healthcare systems.

Click the button below to get a list of systems that support the .edf format.

.edf compatible software

If you choose to analyze your recordings with Cardiomatics, you can still view the raw data using the .edf format, for example by using the free EDFbrowser. It is also possible to use Kubios HRV for scientific purposes.

We look forward to hearing from you!

We will be in touch within 24 hours.

    By submitting this form, you agree to the storing and processing of the submitted data by Cortrium. Read more in our Privacy Policy.

    Technical & regulatory information


    Medical PurposeAmbulatory ECG
    Recording FormatContinuous
    Recording Period7 days on a single charge
    ChargingRechargeable through micro USB
    Sample Rate256Hz
    Frequency Response0.05Hz – 40Hz
    IP RatingIP54

    Please don’t hesitate to get in touch with our technical support.


    ¹ Camm AJ et al.: E.S.C. Committee for Practice Guidelines. 2012 focused update of the ESC Guidelines for the management of atrial fibrillation: an update of the 2010 ESC Guidelines for the management of atrial fibrillation. Developed with the special contribution of the European Heart Rhythm Association. Eur Heart J 2012; 33(21): 2719–47.