Cosinuss

Cosinuss GmbH, a Munich-based medical technology company founded in 2011, specializes in mobile, real-time monitoring of vital parameters. The company originated from the doctoral thesis of Dr. Johannes Kreuzer, who, along with Greta Kreuzer, established the firm. Dr. Kreuzer's academic background is in electrical engineering with a focus on medical electronics from the Technical University of Munich, where his work centered on wearable sensors. Greta Kreuzer also studied at the Technical University of Munich, focusing on technology and management-oriented business administration, and has professional experience at companies like Yahoo! Germany, Bosch, and Schneider Elektrik. In June 2025, Cosinuss was acquired by corpuls, another Bavarian medical technology company, with the Munich site and all employees being retained.

Cosinuss has developed a proprietary, patent-pending earconnect™ technology that uses the external auditory canal to measure vital signs. This technology is embedded in lightweight, in-ear sensors that capture core body temperature, heart rate, blood oxygen saturation (SpO2), and respiration rate. The company's initial product, the cosinuss° One, was aimed at athletes and fitness enthusiasts, offering a chest-strap-free method for monitoring heart rate and body temperature. Subsequently, the firm shifted its focus towards the medical sector, achieving medical company certification in early 2020. Its current B2B business model targets digital healthcare, emergency medicine, remote patient monitoring, and occupational safety. Clients include clinics, research institutions, and special operations units.

The company's offerings constitute a complete monitoring system, from data acquisition to analysis. This includes the c-med° alpha in-ear sensor, gateway solutions for data transmission to mobile devices or smartwatches via Bluetooth or ANT+, and the cosinuss° Health software platform for data visualization and storage. The platform provides secure access for multiple users and features algorithms for advanced data analysis. These solutions are designed for use in challenging environments where traditional monitoring is difficult, such as mountain rescue, and for remote patient monitoring of conditions like high-risk COVID-19 cases. The technology can be integrated as individual components or as a complete solution into third-party systems.

Keywords: in-ear vital signs monitoring, mobile patient monitoring, medical technology, wearable sensors, remote healthcare, real-time data, earconnect technology, Dr. Johannes Kreuzer, Greta Kreuzer, corpuls, c-med alpha sensor, digital healthcare, emergency medicine, occupational safety monitoring, continuous vital signs, core body temperature, heart rate monitoring, blood oxygen saturation, SpO2 sensor, respiration rate, photoplethysmography, PPG sensor, telehealth, mHealth solutions, vital parameter tracking