In 2020 Zafena ICT commissioned Jausoft to improve wireless sensor communication. Bluetooth Low Energy, BLE, is a wireless technology used by many medical sensors since 2015. We decided to extend the TinyB project, a building block used to communicate with BLE sensors, to support fast and robust low level direct access to the Low energy Bluetooth BLE adapter chip using the platform independent HCI API. The result is a new implementation to access Bluetooth called Direct-BT. By using Direct-BT Zafena ICT can provide robust Bluetooth communication with quick connection and transmission times from modern low power wireless medical sensors for its POC-Workstation product.