The present invention refers to an implantable device for constant collection and dosage of glycemia, with real-time monitoring, with no need of external collection by punctioning which is constituted by a metal Compartment (01), hermetically sealed with the Cap (02), containing at least a Micro computerized mini-center (08) fed by the Battery (12) or similar, which is externally rechargeable it will also contain a Sensor (11) which is responsible to collect a portion of the circulating blood and read glycemia levels in real time, sending reading information through the transmission component (10), said Implantable Device will be connected to an inlet Catheter (04) with its collecting Edge (03) duly implanted by means of punctioning at the Subclavian Vein (VS), so to deviate a small flow of blood to pass through within said Dosage and Monitoring Device, thus allowing the Sensor (11) to verify the glycemic dosage and following its natural course by exiting the exit Catheter (06) through the outlet Edge (05), thus returning to the blood current within said Subclavian Vein (VS).