EOFlow’s EOPatch uses Nordic’s nRF52832 for wireless connectivity between wearable, controller and smartphone app

Korea-based medical device company EOFlow has selected Nordic Semiconductor’s nRF52832 Bluetooth 5.2/Bluetooth Low Energy (Bluetooth LE) general-purpose multiprotocol System-on-Chip (SoC) to provide the wireless connectivity for its ‘EOPatch’ insulin management system. The solution is designed to help diabetic patients improve their quality of life by allowing them to monitor and manage their diabetes therapy. 

EOPatch is a 49.5 by 39 by 14.5mm, 29.4g (excluding insulin), IPX8 waterproof (1m for 24 hours), tubeless, wearable, and disposable insulin pump integrating a Nordic nRF52832 SoC. The unit continuously delivers insulin under the skin via a soft canula, helping control blood glucose levels in diabetic patients who need basal insulin and periodic injections of bolus insulin. The reservoir holds up to 200 U (2ml) of insulin, with at least 80 U of insulin needed to activate the patch. In addition, the EOPatch insulin management system comprises a controller that connects to the iOS and Android compatible ‘EOBridge’ Cloud-based diabetes data management program via the ‘EOCloud’ server. 

Bluetooth LE connectivity

Once the EOPatch is filled with insulin, attached and activated, the patient can use either the ‘ADM’ (Advanced Diabetes Manager) smart touchscreen remote controller, or the ‘Narsha’ Android app on a Bluetooth 4.0 (and later) smartphone to control and deliver insulin from the patch. The remote controller or smartphone communicate with the EOPatch via Nordic SoC-enabled Bluetooth LE connectivity. The functionality of the controllers enables the appropriate amount of basal or bolus insulin required to be calculated based on the user’s current blood glucose level, IOB (insulin on board), carbohydrate intake, and other personally programmed settings. Using the controller and the EOBridge app/web platform, the user can create optimized insulin delivery programs and patterns, monitor past insulin deliveries, check blood glucose levels, and view other diabetes-related data.

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