Project / product name: NephroSense
Link to the project: http://
Team leader: Lubos Repka
Challenge: no. 2: Measurement of urinary continence in hospitalized patients
Problem: For now, unlike many other vital functions, urine output isn’t measured automatically. This costs hospital staff vital time and might result in mistakes and unnecessary approximations. The same goes for a manual checkup of infusion rate and fluids remaining. There's currently no widely used system for monitoring toe-to-room temperature gradient, even though it proved useful in clinical studies as a predictor of ICU mortality.
Solution: Our solution is based on weight measuring using load cells. These offer a great resolution (up to 0,1g), are cheap, and have zero additional per-patient cost. Same technology can be used for monitoring intravenous fluid intake and can therefore display valuable information. We included a temperature sensor for measuring toe-to-room temperature gradient, which has been shown to correlate well with the state of patient's circulation, especially when used in tandem with urine output monitoring.
Impact: Automated monitoring of urine output can be a huge timesaver for hospital staff as well as a more accurate way of tracking than traditional pen and paper. Paired with our extra features such as displaying IV fluid intake, dripping rate of an infusion, time remaining until an IV runs out and toe-to-room temperature gradient monitoring, we believe we can offer a comprehensive tool that could save hospital staff precious time and offer invaluable data for selecting patients at risk.
Feasibility & financials: We’ve developed a fully functioning prototype, both on the hardware and software side which is sending data to an IoT cloud as well as into the InterSystems FHIR platform. Implementation into the ICUs could be done using any open system. Our cost for the prototype was 27EUR. If we would get our product to 25 % of all ICU beds in the Czech republic, then after the first year we could get profitability of 27 % with one device cost of 150 euro including staff, development, and certification costs.
What you have built at the hackathon - text explanation + code (e.g. GitHub link): We’ve created both hardware and software solutions. Software consists of Arduino cloud from which we collect data and integrate it with our frontend and InterSoftware cloud. Hardware-wise, we’re using load cells for measuring weight, 2 temperature sensors for measuring toe-to-room temperature. For processing and sending data via wifi, we’re using the Arduino platform with D1 mini and are using li-po battery for power and battery shield for charging. https://github.com/NotLubo/nephro-sense
What you had before the hackathon, please mention open source as well: Before the hackathon we discussed multiple ideas for urine collection and decided that the simplest solution in the form of weight measurement would be the most reliable one. We thought about multiple ideas such as measuring urine color, however decided against it, since the cost/benefit ratio didn’t really add up. All of the actual work has been done during the weekend.
What comes next and what you wish to achieve: We’d like to further improve hardware, making it more durable, smaller and cheaper, find a better way of displaying data and use more tools from the InterSytems platform. Of course our final goal would be to develop and build an actual device which might be tested and later used in ICUs everywhere.