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RuFuS non-invasive RF sensor
RuFuS

News

[Translate to English:] Czujnik RuFuS - zbliżenie prototypu
About

RuFuS is a non-invasive medical sensor that uses radio waves for rapid assessment of heart failure. The device can detect the early stages of pulmonary congestion - one of the earliest signs of worsening heart failure.

The technology analyses how an electromagnetic signal passes through the chest. Congestive fluid changes the propagation properties of the waves, so analysis of the reflected and transmitted signal allows its quantitative assessment. A measurement takes a few seconds, requires no specially trained operator and uses no ionizing radiation.

Why it matters

The problem
The problem
 

Heart failure affects over 60 million people worldwide, and exacerbations are most often triggered by fluid building up in the lungs. X-rays detect it only at a late stage and miss up to ~40% of cases, leading to long, costly hospitalizations.

 
The technology
The technology
 

The measurement takes a few seconds and uses no ionizing radiation. The prototype detected pulmonary congestion in all examined patients, with far higher sensitivity than X-ray. Two versions are in development: institutional and portable.

 
The mission
The mission
 

RuFuS aims to be an accessible, scalable tool that detects patient deterioration before symptoms appear, reducing hospitalizations and improving the quality of life of people living with heart failure.

 
RuFuS project
Achievements

Top prizes in the Young Inventor 2024 and Forge of Talents 2025 competitions, and projects under the Innovation Incubator 4.0 programme (2021, 2022).

Over 12M PLN in R&D funding from European sources: 3.25M PLN (2025) and 8.28M PLN (2026) for the development of the second-generation sensor, including the TEAM-NET FENG programme and NextGenerationEU funds.

Patent No. 245498 for the first research prototype, and patent applications P.453015 and European EP.26167020.2 covering the solution adapted to electromagnetic compatibility requirements.

First results of the medical experiment presented at the American Heart Association Scientific Sessions 2024. Media coverage has included Polsat, Rzeczpospolita, Teleexpress, TVP Wydarzenia, the Polish Press Agency (PAP), Gazeta Wyborcza, Radio Łódź, gov.pl, mp.pl Kardiologia and Forum Akademickie.

RuFuS team
Team

We are a science-driven team combining radio-frequency and biomedical engineering expertise, turning advanced research into real tools that improve care for heart failure patients.

dr inż. Maciej Ślot
dr inż. Maciej Ślot
CTO & Founder
 
inż. Kamila Samolej
inż. Kamila Samolej
Lead Engineer & Co-Founder
 
prof. n. med. Agata Bielecka-Dąbrowa
prof. n. med. Agata Bielecka-Dąbrowa
Medical Advisor & Co-Founder
 
inż. Bartosz Gorczyński
inż. Bartosz Gorczyński
phantom systems
 
Maksymilian Bartosik
Maksymilian Bartosik
electromagnetic simulations
 
Martyna Dawidowicz
Martyna Dawidowicz
prototyping
 
Maciej Cichoń
Maciej Cichoń
machine learning & data analysis
 
Wiktoria Jagiełło
Wiktoria Jagiełło
measurements & analysis
 
Patrycja Gołaś
Patrycja Gołaś
measurements & analysis
 
mgr inż. Mateusz Pieczyński
mgr inż. Mateusz Pieczyński
measurements & prototyping
 
Angelika Walczak
measurements
 
Wiktor Moch
prototyping
 

Publications and patents

Publications

Bielecka-Dąbrowa A., Zasada I., Olejniczak W., Sakowicz A., Ślot M., Association of assessment of clinical congestion in patients with heart failure compared with assessment using bioimpedance and microwave spectroscopy - first results of the medical experiment, presented at the American Heart Association Scientific Sessions 2024, New Orleans.

Wittczak A., Ślot M., Bielecka-Dąbrowa A. (2023). The Importance of Optimal Hydration in Patients with Heart Failure - Not Always Too Much Fluid. Biomedicines, 11(10), 2684. doi.org/10.3390/biomedicines11102684

Samolej K., Ślot M., Busiakiewicz A. et al. (2025). Radio-frequency sensor for non-destructive evaluation of composite materials. Scientific Reports, 15, 31825. doi.org/10.1038/s41598-025-17683-x

Ślot M., Zasada I., Olejniczak W., Sakowicz A., Bielecka-Dąbrowa A. (2026). Positioning-robust broadband microwave transmission as a minimal-complexity approach to thoracic dielectric sensing: simulation and phantom analysis. Scientific Reports, 16, 26182. doi.org/10.1038/s41598-026-60247-w

Patents

Patent No. 245498 - first prototype for scientific investigation.

US patent US 12,653,419 B2.

Patent application P.453015 - a solution developed within the grant project, adapted to electromagnetic compatibility requirements.

European patent application EP.26167020.2.

Contact

Maciej Ślot, PhD - Founder & CTO
maciej.slot@fis.uni.lodz.pl

Kamila Samolej, BEng - Co-Founder & Lead Engineer
kamila.samolej@fis.uni.lodz.pl

Faculty of Physics and Applied Informatics
University of Lodz
Pomorska 149/153, 90-236 Łódź, Poland

Funduszepleu
Projekt Multiportalu UŁ współfinansowany z funduszy Unii Europejskiej w ramach konkursu NCBR